diff --git a/.codecov.yaml b/.codecov.yaml
index cc6cbfdd31..9ce617cfa6 100644
--- a/.codecov.yaml
+++ b/.codecov.yaml
@@ -100,6 +100,10 @@ component_management:
       name: bridge-symfony-http-foundation-telemetry
       paths:
         - src/bridge/symfony/http-foundation-telemetry/**
+    - component_id: bridge-symfony-postgresql-bundle
+      name: bridge-symfony-postgresql-bundle
+      paths:
+        - src/bridge/symfony/postgresql-bundle/**
     - component_id: bridge-symfony-telemetry-bundle
       name: bridge-symfony-telemetry-bundle
       paths:
diff --git a/.github/workflows/job-tests.yml b/.github/workflows/job-tests.yml
index e117319cfc..d88e507554 100644
--- a/.github/workflows/job-tests.yml
+++ b/.github/workflows/job-tests.yml
@@ -141,6 +141,7 @@ jobs:
       - name: "Test - Bridges"
         run: "composer test:bridges"
         env:
+          PGSQL_DATABASE_URL: pgsql://postgres:postgres@127.0.0.1:${{ job.services.postgres.ports[5432] }}/postgres?serverVersion=11&charset=utf8
           AZURITE_HOST: "localhost"
           AZURITE_BLOB_PORT: "10000"
           AZURITE_ACCOUNT_NAME: "flowphpaccount01"
diff --git a/.github/workflows/monorepo-split.yml b/.github/workflows/monorepo-split.yml
index be084138e7..251bbf9e41 100644
--- a/.github/workflows/monorepo-split.yml
+++ b/.github/workflows/monorepo-split.yml
@@ -94,6 +94,8 @@ jobs:
             split_repository: 'symfony-http-foundation-bridge'
           - local_path: 'src/bridge/symfony/http-foundation-telemetry'
             split_repository: 'symfony-http-foundation-telemetry-bridge'
+          - local_path: 'src/bridge/symfony/postgresql-bundle'
+            split_repository: 'symfony-postgresql-bundle'
           - local_path: 'src/bridge/symfony/telemetry-bundle'
             split_repository: 'symfony-telemetry-bundle'
           - local_path: 'src/bridge/telemetry/otlp'
diff --git a/bin/docs.php b/bin/docs.php
index dc829dcf8f..24e103f584 100755
--- a/bin/docs.php
+++ b/bin/docs.php
@@ -60,7 +60,12 @@ public function execute(InputInterface $input, OutputInterface $output) : int
             __DIR__ . '/../src/adapter/etl-adapter-xml/src/Flow/ETL/Adapter/XML/functions.php',
             __DIR__ . '/../src/lib/filesystem/src/Flow/Filesystem/DSL/functions.php',
             __DIR__ . '/../src/lib/types/src/Flow/Types/DSL/functions.php',
-            __DIR__ . '/../src/lib/postgresql/src/Flow/PostgreSql/DSL/functions.php',
+            __DIR__ . '/../src/lib/postgresql/src/Flow/PostgreSql/DSL/schema.php',
+            __DIR__ . '/../src/lib/postgresql/src/Flow/PostgreSql/DSL/query.php',
+            __DIR__ . '/../src/lib/postgresql/src/Flow/PostgreSql/DSL/condition.php',
+            __DIR__ . '/../src/lib/postgresql/src/Flow/PostgreSql/DSL/parser.php',
+            __DIR__ . '/../src/lib/postgresql/src/Flow/PostgreSql/DSL/client.php',
+            __DIR__ . '/../src/lib/postgresql/src/Flow/PostgreSql/Migrations/DSL/functions.php',
             __DIR__ . '/../src/lib/telemetry/src/Flow/Telemetry/DSL/functions.php',
             __DIR__ . '/../src/lib/azure-sdk/src/Flow/Azure/SDK/DSL/functions.php',
             __DIR__ . '/../src/bridge/filesystem/azure/src/Flow/Filesystem/Bridge/Azure/DSL/functions.php',
diff --git a/composer.json b/composer.json
index 51a0abc550..407f416a5a 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
         "ext-xmlreader": "*",
         "ext-xmlwriter": "*",
         "ext-zlib": "*",
-        "composer-runtime-api": "^2.0",
+        "composer-runtime-api": "^2.2",
         "async-aws/s3": "^2.6",
         "brick/math": "^0.12 || ^0.13 || ^0.14",
         "coduo/php-humanizer": "^5.0",
@@ -39,15 +39,15 @@
         "psr/http-message": "^1.0 || ^2.0",
         "psr/log": "^2.0 || ^3.0",
         "psr/simple-cache": "^1.0 || ^2.0 || ^3.0",
-        "symfony/config": "^6.4 || ^7.3 || ^8.0",
-        "symfony/console": "^6.4 || ^7.3 || ^8.0",
-        "symfony/dependency-injection": "^6.4 || ^7.3 || ^8.0",
-        "symfony/event-dispatcher": "^6.4 || ^7.3 || ^8.0",
-        "symfony/http-foundation": "^6.4 || ^7.3 || ^8.0",
-        "symfony/http-kernel": "^6.4 || ^7.3 || ^8.0",
+        "symfony/config": "^6.4 || ^7.4 || ^8.0",
+        "symfony/console": "^6.4 || ^7.4 || ^8.0",
+        "symfony/dependency-injection": "^6.4 || ^7.4 || ^8.0",
+        "symfony/event-dispatcher": "^6.4 || ^7.4 || ^8.0",
+        "symfony/http-foundation": "^6.4 || ^7.4 || ^8.0",
+        "symfony/http-kernel": "^6.4 || ^7.4 || ^8.0",
         "symfony/polyfill-mbstring": "^1.33",
-        "symfony/string": "^6.4 || ^7.3 || ^8.0",
-        "symfony/uid": "^6.4 || ^7.3 || ^8.0",
+        "symfony/string": "^6.4 || ^7.4 || ^8.0",
+        "symfony/uid": "^6.4 || ^7.4 || ^8.0",
         "webmozart/glob": "^3.0 || ^4.0"
     },
     "require-dev": {
@@ -61,14 +61,14 @@
         "php-http/curl-client": "^2.2",
         "php-http/mock-client": "^1.5",
         "ramsey/uuid": "^4.5",
-        "symfony/cache": "^6.4 || ^7.3 || ^8.0",
-        "symfony/dotenv": "^6.4 || ^7.3 || ^8.0",
-        "symfony/finder": "^6.4 || ^7.3 || ^8.0",
-        "symfony/framework-bundle": "^6.4 || ^7.3 || ^8.0",
-        "symfony/http-client": "^6.4 || ^7.3 || ^8.0",
-        "symfony/messenger": "^6.4 || ^7.3 || ^8.0",
-        "symfony/process": "^7.3 || ^8.0",
-        "symfony/routing": "^6.4 || ^7.3 || ^8.0",
+        "symfony/cache": "^6.4 || ^7.4 || ^8.0",
+        "symfony/dotenv": "^6.4 || ^7.4 || ^8.0",
+        "symfony/finder": "^6.4 || ^7.4 || ^8.0",
+        "symfony/framework-bundle": "^6.4 || ^7.4 || ^8.0",
+        "symfony/http-client": "^6.4 || ^7.4 || ^8.0",
+        "symfony/messenger": "^6.4 || ^7.4 || ^8.0",
+        "symfony/process": "^7.4 || ^8.0",
+        "symfony/routing": "^6.4 || ^7.4 || ^8.0",
         "twig/twig": "^3.0"
     },
     "replace": {
@@ -109,6 +109,7 @@
         "flow-php/snappy": "self.version",
         "flow-php/symfony-http-foundation-bridge": "self.version",
         "flow-php/symfony-http-foundation-telemetry-bridge": "self.version",
+        "flow-php/symfony-postgresql-bundle": "self.version",
         "flow-php/symfony-telemetry-bundle": "self.version",
         "flow-php/telemetry": "self.version",
         "flow-php/telemetry-otlp-bridge": "self.version",
@@ -144,6 +145,7 @@
                 "src/bridge/psr18/telemetry/src/Flow",
                 "src/bridge/symfony/http-foundation-telemetry/src/Flow",
                 "src/bridge/symfony/http-foundation/src/Flow",
+                "src/bridge/symfony/postgresql-bundle/src/Flow",
                 "src/bridge/symfony/telemetry-bundle/src/Flow",
                 "src/bridge/telemetry/otlp/src/Flow",
                 "src/bridge/phpunit/telemetry/src/Flow",
@@ -204,8 +206,13 @@
             "src/lib/parquet/src/Flow/Parquet/functions.php",
             "src/lib/parquet/src/Flow/Parquet/Binary/functions.php",
             "src/lib/parquet/src/stubs.php",
-            "src/lib/postgresql/src/Flow/PostgreSql/DSL/functions.php",
+            "src/lib/postgresql/src/Flow/PostgreSql/DSL/client.php",
+            "src/lib/postgresql/src/Flow/PostgreSql/DSL/condition.php",
+            "src/lib/postgresql/src/Flow/PostgreSql/DSL/parser.php",
+            "src/lib/postgresql/src/Flow/PostgreSql/DSL/query.php",
+            "src/lib/postgresql/src/Flow/PostgreSql/DSL/schema.php",
             "src/lib/postgresql/src/stubs.php",
+            "src/lib/postgresql/src/Flow/PostgreSql/Migrations/DSL/functions.php",
             "src/lib/snappy/polyfill.php",
             "src/lib/telemetry/src/Flow/Telemetry/DSL/functions.php",
             "src/lib/types/src/Flow/Types/DSL/functions.php"
@@ -237,6 +244,7 @@
                 "src/bridge/psr18/telemetry/tests/Flow",
                 "src/bridge/symfony/http-foundation-telemetry/tests/Flow",
                 "src/bridge/symfony/http-foundation/tests/Flow",
+                "src/bridge/symfony/postgresql-bundle/tests/Flow",
                 "src/bridge/symfony/telemetry-bundle/tests/Flow",
                 "src/bridge/telemetry/otlp/tests/Flow",
                 "src/bridge/phpunit/telemetry/tests/Flow",
@@ -296,6 +304,7 @@
             "@test:lib:parquet",
             "@test:lib:parquet-viewer",
             "@test:lib:postgresql",
+            "@test:lib:postgresql-migrations",
             "@test:lib:snappy",
             "@test:lib:telemetry",
             "@test:lib:types"
@@ -311,6 +320,7 @@
             "@test:bridge:psr18-telemetry",
             "@test:bridge:symfony-http-foundation",
             "@test:bridge:symfony-http-foundation-telemetry",
+            "@test:bridge:symfony-postgresql-bundle",
             "@test:bridge:symfony-telemetry-bundle",
             "@test:bridge:telemetry-otlp"
         ],
@@ -371,6 +381,10 @@
             "tools/phpunit/vendor/bin/phpunit --testsuite=lib-postgresql-unit --log-junit ./var/phpunit/logs/lib-postgresql-unit.junit.xml --coverage-clover=./var/phpunit/coverage/clover/lib-postgresql-unit.coverage.xml",
             "tools/phpunit/vendor/bin/phpunit --testsuite=lib-postgresql-integration --log-junit ./var/phpunit/logs/lib-postgresql-integration.junit.xml --coverage-clover=./var/phpunit/coverage/clover/lib-postgresql-integration.coverage.xml"
         ],
+        "test:lib:postgresql-migrations": [
+            "tools/phpunit/vendor/bin/phpunit --testsuite=lib-postgresql-migrations-unit --log-junit ./var/phpunit/logs/lib-postgresql-migrations-unit.junit.xml --coverage-clover=./var/phpunit/coverage/clover/lib-postgresql-migrations-unit.coverage.xml",
+            "tools/phpunit/vendor/bin/phpunit --testsuite=lib-postgresql-migrations-integration --log-junit ./var/phpunit/logs/lib-postgresql-migrations-integration.junit.xml --coverage-clover=./var/phpunit/coverage/clover/lib-postgresql-migrations-integration.coverage.xml"
+        ],
         "test:bridge:filesystem-azure": [
             "tools/phpunit/vendor/bin/phpunit --testsuite=bridge-filesystem-azure-unit --log-junit ./var/phpunit/logs/bridge-filesystem-azure-unit.junit.xml --coverage-clover=./var/phpunit/coverage/clover/bridge-filesystem-azure-unit.coverage.xml",
             "tools/phpunit/vendor/bin/phpunit --testsuite=bridge-filesystem-azure-integration --log-junit ./var/phpunit/logs/bridge-filesystem-azure-integration.junit.xml --coverage-clover=./var/phpunit/coverage/clover/bridge-filesystem-azure-integration.coverage.xml"
@@ -404,6 +418,10 @@
             "tools/phpunit/vendor/bin/phpunit --testsuite=bridge-symfony-http-foundation-telemetry-unit --log-junit ./var/phpunit/logs/bridge-symfony-http-foundation-telemetry-unit.junit.xml --coverage-clover=./var/phpunit/coverage/clover/bridge-symfony-http-foundation-telemetry-unit.coverage.xml",
             "tools/phpunit/vendor/bin/phpunit --testsuite=bridge-symfony-http-foundation-telemetry-integration --log-junit ./var/phpunit/logs/bridge-symfony-http-foundation-telemetry-integration.junit.xml --coverage-clover=./var/phpunit/coverage/clover/bridge-symfony-http-foundation-telemetry-integration.coverage.xml"
         ],
+        "test:bridge:symfony-postgresql-bundle": [
+            "tools/phpunit/vendor/bin/phpunit --testsuite=bridge-symfony-postgresql-bundle-unit --log-junit ./var/phpunit/logs/bridge-symfony-postgresql-bundle-unit.junit.xml --coverage-clover=./var/phpunit/coverage/clover/bridge-symfony-postgresql-bundle-unit.coverage.xml",
+            "tools/phpunit/vendor/bin/phpunit --testsuite=bridge-symfony-postgresql-bundle-integration --log-junit ./var/phpunit/logs/bridge-symfony-postgresql-bundle-integration.junit.xml --coverage-clover=./var/phpunit/coverage/clover/bridge-symfony-postgresql-bundle-integration.coverage.xml"
+        ],
         "test:bridge:symfony-telemetry-bundle": [
             "tools/phpunit/vendor/bin/phpunit --testsuite=bridge-symfony-telemetry-bundle-unit --log-junit ./var/phpunit/logs/bridge-symfony-telemetry-bundle-unit.junit.xml --coverage-clover=./var/phpunit/coverage/clover/bridge-symfony-telemetry-bundle-unit.coverage.xml",
             "tools/phpunit/vendor/bin/phpunit --testsuite=bridge-symfony-telemetry-bundle-integration --log-junit ./var/phpunit/logs/bridge-symfony-telemetry-bundle-integration.junit.xml --coverage-clover=./var/phpunit/coverage/clover/bridge-symfony-telemetry-bundle-integration.coverage.xml"
diff --git a/composer.lock b/composer.lock
index cf5f1a39aa..8968f0aa4d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "ed336739d46dfa1e5132dbb97e65575c",
+    "content-hash": "a5802d7dd9648f8a2c0576222a39538d",
     "packages": [
         {
             "name": "async-aws/core",
@@ -536,16 +536,16 @@
         },
         {
             "name": "firebase/php-jwt",
-            "version": "v7.0.3",
+            "version": "v7.0.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/firebase/php-jwt.git",
-                "reference": "28aa0694bcfdfa5e2959c394d5a1ee7a5083629e"
+                "reference": "47ad26bab5e7c70ae8a6f08ed25ff83631121380"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/28aa0694bcfdfa5e2959c394d5a1ee7a5083629e",
-                "reference": "28aa0694bcfdfa5e2959c394d5a1ee7a5083629e",
+                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/47ad26bab5e7c70ae8a6f08ed25ff83631121380",
+                "reference": "47ad26bab5e7c70ae8a6f08ed25ff83631121380",
                 "shasum": ""
             },
             "require": {
@@ -553,6 +553,7 @@
             },
             "require-dev": {
                 "guzzlehttp/guzzle": "^7.4",
+                "phpfastcache/phpfastcache": "^9.2",
                 "phpspec/prophecy-phpunit": "^2.0",
                 "phpunit/phpunit": "^9.5",
                 "psr/cache": "^2.0||^3.0",
@@ -593,22 +594,22 @@
             ],
             "support": {
                 "issues": "https://github.com/firebase/php-jwt/issues",
-                "source": "https://github.com/firebase/php-jwt/tree/v7.0.3"
+                "source": "https://github.com/firebase/php-jwt/tree/v7.0.5"
             },
-            "time": "2026-02-25T22:16:40+00:00"
+            "time": "2026-04-01T20:38:03+00:00"
         },
         {
             "name": "google/apiclient",
-            "version": "v2.19.0",
+            "version": "v2.19.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/googleapis/google-api-php-client.git",
-                "reference": "b18fa8aed7b2b2dd4bcce74e2c7d267e16007ea9"
+                "reference": "703ba9acfaf4ba71306108207feafb6d1d137eb0"
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-                "url": "https://api.github.com/repos/googleapis/google-api-php-client/zipball/b18fa8aed7b2b2dd4bcce74e2c7d267e16007ea9",
-                "reference": "b18fa8aed7b2b2dd4bcce74e2c7d267e16007ea9",
+                "url": "https://api.github.com/repos/googleapis/google-api-php-client/zipball/703ba9acfaf4ba71306108207feafb6d1d137eb0",
+                "reference": "703ba9acfaf4ba71306108207feafb6d1d137eb0",
                 "shasum": ""
             },
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@@ -619,11 +620,11 @@
                 "guzzlehttp/psr7": "^2.6",
                 "monolog/monolog": "^2.9||^3.0",
                 "php": "^8.1",
-                "phpseclib/phpseclib": "^3.0.36"
+                "phpseclib/phpseclib": "^3.0.50"
             },
             "require-dev": {
                 "cache/filesystem-adapter": "^1.1",
-                "composer/composer": "^1.10.23",
+                "composer/composer": "^2.9",
                 "phpcompatibility/php-compatibility": "^9.2",
                 "phpspec/prophecy-phpunit": "^2.1",
                 "phpunit/phpunit": "^9.6",
@@ -636,6 +637,9 @@
             },
             "type": "library",
             "extra": {
+                "component": {
+                    "entry": "src/Client.php"
+                },
                 "branch-alias": {
                     "dev-main": "2.x-dev"
                 }
@@ -662,9 +666,9 @@
             ],
             "support": {
                 "issues": "https://github.com/googleapis/google-api-php-client/issues",
-                "source": "https://github.com/googleapis/google-api-php-client/tree/v2.19.0"
+                "source": "https://github.com/googleapis/google-api-php-client/tree/v2.19.2"
             },
-            "time": "2026-01-09T19:59:47+00:00"
+            "time": "2026-03-30T18:54:44+00:00"
         },
         {
             "name": "google/apiclient-services",
@@ -2491,16 +2495,16 @@
         },
         {
             "name": "symfony/config",
-            "version": "v7.4.7",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/config.git",
-                "reference": "6c17162555bfb58957a55bb0e43e00035b6ae3d5"
+                "reference": "2d19dde43fa2ff720b9a40763ace7226594f503b"
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-                "url": "https://api.github.com/repos/symfony/config/zipball/6c17162555bfb58957a55bb0e43e00035b6ae3d5",
-                "reference": "6c17162555bfb58957a55bb0e43e00035b6ae3d5",
+                "url": "https://api.github.com/repos/symfony/config/zipball/2d19dde43fa2ff720b9a40763ace7226594f503b",
+                "reference": "2d19dde43fa2ff720b9a40763ace7226594f503b",
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@@ -2546,7 +2550,7 @@
             "description": "Helps you find, load, combine, autofill and validate configuration values of any kind",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/config/tree/v7.4.7"
+                "source": "https://github.com/symfony/config/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -2566,20 +2570,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-03-06T10:41:14+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "symfony/console",
-            "version": "v7.4.7",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "e1e6770440fb9c9b0cf725f81d1361ad1835329d"
+                "reference": "1e92e39c51f95b88e3d66fa2d9f06d1fb45dd707"
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-                "reference": "e1e6770440fb9c9b0cf725f81d1361ad1835329d",
+                "url": "https://api.github.com/repos/symfony/console/zipball/1e92e39c51f95b88e3d66fa2d9f06d1fb45dd707",
+                "reference": "1e92e39c51f95b88e3d66fa2d9f06d1fb45dd707",
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@@ -2644,7 +2648,7 @@
                 "terminal"
             ],
             "support": {
-                "source": "https://github.com/symfony/console/tree/v7.4.7"
+                "source": "https://github.com/symfony/console/tree/v7.4.8"
             },
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                 {
@@ -2664,20 +2668,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-03-06T14:06:20+00:00"
+            "time": "2026-03-30T13:54:39+00:00"
         },
         {
             "name": "symfony/dependency-injection",
-            "version": "v7.4.7",
+            "version": "v7.4.8",
             "source": {
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                 "url": "https://github.com/symfony/dependency-injection.git",
-                "reference": "0f651e58f4917fb0e2cd261ccbfe3d71e6e0f5db"
+                "reference": "f7025fd7b687c240426562f86ada06a93b1e771d"
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-                "url": "https://api.github.com/repos/symfony/dependency-injection/zipball/0f651e58f4917fb0e2cd261ccbfe3d71e6e0f5db",
-                "reference": "0f651e58f4917fb0e2cd261ccbfe3d71e6e0f5db",
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@@ -2728,7 +2732,7 @@
             "description": "Allows you to standardize and centralize the way objects are constructed in your application",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/dependency-injection/tree/v7.4.7"
+                "source": "https://github.com/symfony/dependency-injection/tree/v7.4.8"
             },
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                 {
@@ -2748,7 +2752,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-03-03T07:48:48+00:00"
+            "time": "2026-03-31T06:50:29+00:00"
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-            "version": "v7.4.7",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/dotenv.git",
-                "reference": "7e5529a0b02395cb4614cdf507495a4cef3115c5"
+                "reference": "5df79f11350166125fe754c85b87f7e13d735314"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/dotenv/zipball/7e5529a0b02395cb4614cdf507495a4cef3115c5",
-                "reference": "7e5529a0b02395cb4614cdf507495a4cef3115c5",
+                "url": "https://api.github.com/repos/symfony/dotenv/zipball/5df79f11350166125fe754c85b87f7e13d735314",
+                "reference": "5df79f11350166125fe754c85b87f7e13d735314",
                 "shasum": ""
             },
             "require": {
@@ -6054,7 +6058,7 @@
                 "environment"
             ],
             "support": {
-                "source": "https://github.com/symfony/dotenv/tree/v7.4.7"
+                "source": "https://github.com/symfony/dotenv/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -6074,20 +6078,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-03-03T07:48:48+00:00"
+            "time": "2026-03-30T12:55:43+00:00"
         },
         {
             "name": "symfony/finder",
-            "version": "v7.4.6",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "8655bf1076b7a3a346cb11413ffdabff50c7ffcf"
+                "reference": "e0be088d22278583a82da281886e8c3592fbf149"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/finder/zipball/8655bf1076b7a3a346cb11413ffdabff50c7ffcf",
-                "reference": "8655bf1076b7a3a346cb11413ffdabff50c7ffcf",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/e0be088d22278583a82da281886e8c3592fbf149",
+                "reference": "e0be088d22278583a82da281886e8c3592fbf149",
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             "require": {
@@ -6122,7 +6126,7 @@
             "description": "Finds files and directories via an intuitive fluent interface",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/finder/tree/v7.4.6"
+                "source": "https://github.com/symfony/finder/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -6142,20 +6146,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-01-29T09:40:50+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "symfony/framework-bundle",
-            "version": "v7.4.7",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/framework-bundle.git",
-                "reference": "c94bc78c85d76af67918404a95d44940f66a7c2f"
+                "reference": "180533cfbac2144349044267db31d5d3df9957cb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/framework-bundle/zipball/c94bc78c85d76af67918404a95d44940f66a7c2f",
-                "reference": "c94bc78c85d76af67918404a95d44940f66a7c2f",
+                "url": "https://api.github.com/repos/symfony/framework-bundle/zipball/180533cfbac2144349044267db31d5d3df9957cb",
+                "reference": "180533cfbac2144349044267db31d5d3df9957cb",
                 "shasum": ""
             },
             "require": {
@@ -6280,7 +6284,7 @@
             "description": "Provides a tight integration between Symfony components and the Symfony full-stack framework",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/framework-bundle/tree/v7.4.7"
+                "source": "https://github.com/symfony/framework-bundle/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -6300,20 +6304,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-03-06T15:39:55+00:00"
+            "time": "2026-03-30T12:55:43+00:00"
         },
         {
             "name": "symfony/messenger",
-            "version": "v7.4.7",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/messenger.git",
-                "reference": "13a00f01a46ba7d47ac7f0e3d9a901d19f9432f0"
+                "reference": "ddf5ab29bc0329ece30e16f01c86abb6241e92d8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/messenger/zipball/13a00f01a46ba7d47ac7f0e3d9a901d19f9432f0",
-                "reference": "13a00f01a46ba7d47ac7f0e3d9a901d19f9432f0",
+                "url": "https://api.github.com/repos/symfony/messenger/zipball/ddf5ab29bc0329ece30e16f01c86abb6241e92d8",
+                "reference": "ddf5ab29bc0329ece30e16f01c86abb6241e92d8",
                 "shasum": ""
             },
             "require": {
@@ -6374,7 +6378,7 @@
             "description": "Helps applications send and receive messages to/from other applications or via message queues",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/messenger/tree/v7.4.7"
+                "source": "https://github.com/symfony/messenger/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -6394,20 +6398,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-03-04T13:54:41+00:00"
+            "time": "2026-03-30T12:55:43+00:00"
         },
         {
             "name": "symfony/options-resolver",
-            "version": "v7.4.0",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/options-resolver.git",
-                "reference": "b38026df55197f9e39a44f3215788edf83187b80"
+                "reference": "2888fcdc4dc2fd5f7c7397be78631e8af12e02b4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/b38026df55197f9e39a44f3215788edf83187b80",
-                "reference": "b38026df55197f9e39a44f3215788edf83187b80",
+                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/2888fcdc4dc2fd5f7c7397be78631e8af12e02b4",
+                "reference": "2888fcdc4dc2fd5f7c7397be78631e8af12e02b4",
                 "shasum": ""
             },
             "require": {
@@ -6445,7 +6449,7 @@
                 "options"
             ],
             "support": {
-                "source": "https://github.com/symfony/options-resolver/tree/v7.4.0"
+                "source": "https://github.com/symfony/options-resolver/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -6465,7 +6469,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-11-12T15:39:26+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "symfony/polyfill-php80",
@@ -6553,16 +6557,16 @@
         },
         {
             "name": "symfony/process",
-            "version": "v7.4.5",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "608476f4604102976d687c483ac63a79ba18cc97"
+                "reference": "60f19cd3badc8de688421e21e4305eba50f8089a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/608476f4604102976d687c483ac63a79ba18cc97",
-                "reference": "608476f4604102976d687c483ac63a79ba18cc97",
+                "url": "https://api.github.com/repos/symfony/process/zipball/60f19cd3badc8de688421e21e4305eba50f8089a",
+                "reference": "60f19cd3badc8de688421e21e4305eba50f8089a",
                 "shasum": ""
             },
             "require": {
@@ -6594,7 +6598,7 @@
             "description": "Executes commands in sub-processes",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/process/tree/v7.4.5"
+                "source": "https://github.com/symfony/process/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -6614,20 +6618,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-01-26T15:07:59+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "symfony/routing",
-            "version": "v7.4.6",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/routing.git",
-                "reference": "238d749c56b804b31a9bf3e26519d93b65a60938"
+                "reference": "9608de9873ec86e754fb6c0a0fa7e5f1a960eb6b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/routing/zipball/238d749c56b804b31a9bf3e26519d93b65a60938",
-                "reference": "238d749c56b804b31a9bf3e26519d93b65a60938",
+                "url": "https://api.github.com/repos/symfony/routing/zipball/9608de9873ec86e754fb6c0a0fa7e5f1a960eb6b",
+                "reference": "9608de9873ec86e754fb6c0a0fa7e5f1a960eb6b",
                 "shasum": ""
             },
             "require": {
@@ -6679,7 +6683,7 @@
                 "url"
             ],
             "support": {
-                "source": "https://github.com/symfony/routing/tree/v7.4.6"
+                "source": "https://github.com/symfony/routing/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -6699,7 +6703,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-02-25T16:50:00+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "twig/twig",
@@ -6801,5 +6805,5 @@
         "composer-runtime-api": "^2.0"
     },
     "platform-dev": {},
-    "plugin-api-version": "2.6.0"
+    "plugin-api-version": "2.9.0"
 }
diff --git a/documentation/components/bridges/symfony-postgresql-bundle.md b/documentation/components/bridges/symfony-postgresql-bundle.md
new file mode 100644
index 0000000000..fcf010bee1
--- /dev/null
+++ b/documentation/components/bridges/symfony-postgresql-bundle.md
@@ -0,0 +1,340 @@
+# Symfony PostgreSQL Bundle
+
+Symfony bundle integrating Flow PHP's PostgreSQL library with Symfony applications, providing database management,
+schema migrations, catalog-driven schema diffing, and optional telemetry for query tracing and metrics.
+
+- [Back](/documentation/introduction.md)
+- [Packagist](https://packagist.org/packages/flow-php/symfony-postgresql-bundle)
+- [Installation](/documentation/installation/packages/symfony-postgresql-bundle.md)
+- [GitHub](https://github.com/flow-php/symfony-postgresql-bundle)
+
+[TOC]
+
+## Installation
+
+For detailed installation instructions, see the [installation page](/documentation/installation/packages/symfony-postgresql-bundle.md).
+
+## Overview
+
+This bundle integrates Flow PHP's PostgreSQL library with Symfony applications. It provides:
+
+- **Multiple database connections** - Configure and manage several PostgreSQL connections independently
+- **Database management commands** - Create, drop databases and execute SQL from the console
+- **Migration framework** - Generate, execute, and track schema migrations
+- **Schema diffing** - Automatically generate migrations by comparing the database to catalog definitions
+- **Rollback support** - Generate reversible migrations with automatic rollback files
+- **Telemetry integration** - Distributed tracing, query logging, and metrics per connection
+- **Catalog provider system** - Define target schemas via PHP attributes, service references, or inline YAML
+
+## Configuration Reference
+
+### Connections
+
+At least one connection is required. Each connection has a DSN and optional telemetry and migrations blocks.
+
+```yaml
+flow_postgresql:
+  connections:
+    default:
+      dsn: '%env(DATABASE_URL)%'
+```
+
+### Telemetry
+
+Enable telemetry per connection to get distributed tracing, query logging, and metrics.
+
+```yaml
+flow_postgresql:
+  connections:
+    default:
+      dsn: '%env(DATABASE_URL)%'
+
+      telemetry:
+        service_id: "flow.telemetry"         # Required: Telemetry service ID
+        clock_service_id: null               # Optional: PSR-20 clock service (defaults to SystemClock)
+        trace_queries: true                  # Record query execution in traces
+        trace_transactions: true             # Record transaction boundaries
+        collect_metrics: true                # Collect query metrics (duration, row count)
+        log_queries: false                   # Log all queries
+        max_query_length: 1000               # Truncate queries longer than this (chars)
+        include_parameters: false            # Include query parameters in traces
+        max_parameters: 10                   # Max number of parameters to include
+        max_parameter_length: 100            # Max length of each parameter value (chars)
+```
+
+### Migrations
+
+Migrations are configured at the top level, not per connection. Use `--connection` to target a specific connection
+when running migration commands.
+
+```yaml
+flow_postgresql:
+  connections:
+    default:
+      dsn: '%env(DATABASE_URL)%'
+
+  migrations:
+    enabled: true
+    directory: "%kernel.project_dir%/migrations"  # Where migration files are stored
+    namespace: "App\\Migrations"                   # PHP namespace for generated migrations
+    table_name: "flow_migrations"                  # Database table tracking executed migrations
+    table_schema: "public"                         # Schema for the migrations table
+    migration_file_name: "migration.php"           # Name of the migration file in each version directory
+    rollback_file_name: "rollback.php"             # Name of the rollback file in each version directory
+    all_or_nothing: false                          # Wrap all migrations in a single transaction
+    generate_rollback: true                        # Generate rollback files automatically
+```
+
+### Catalog Providers
+
+Catalog providers define the target database schema. When you run `flow:migrations:diff`, the bundle compares
+the current database state to the catalog and generates migration SQL to reconcile the differences.
+
+There are three ways to define catalog providers.
+
+#### Attribute-Based Discovery
+
+Annotate a class implementing `CatalogProvider` with `#[AsCatalogProvider]` for automatic discovery:
+
+```php
+<?php
+
+namespace App\Database;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Attribute\AsCatalogProvider;
+use Flow\PostgreSql\Catalog\Catalog;
+use Flow\PostgreSql\Catalog\CatalogProvider;
+
+#[AsCatalogProvider]
+final class UsersCatalogProvider implements CatalogProvider
+{
+    public function get(): Catalog
+    {
+        return Catalog::create(
+            // Define your tables, columns, indexes...
+        );
+    }
+}
+```
+
+#### Service Reference
+
+Reference an existing service by its ID:
+
+```yaml
+flow_postgresql:
+  catalog_providers:
+    - catalog_provider_id: "app.my_catalog_provider"
+```
+
+#### Inline YAML
+
+Define the catalog directly in configuration:
+
+```yaml
+flow_postgresql:
+  catalog_providers:
+    - catalog:
+        schemas:
+          - name: "public"
+            tables:
+              - name: "users"
+                columns:
+                  - name: "id"
+                    type: { name: "int4", schema: "pg_catalog" }
+                    nullable: false
+                  - name: "email"
+                    type: { name: "varchar", schema: "pg_catalog" }
+                    nullable: false
+                  - name: "created_at"
+                    type: { name: "timestamptz", schema: "pg_catalog" }
+                    nullable: false
+```
+
+Multiple catalog providers can be combined. They are merged via `ChainCatalogProvider` into a single catalog.
+
+## Console Commands
+
+### Database Commands
+
+These commands are always available, regardless of migration configuration.
+
+| Command | Description |
+|---------|-------------|
+| `flow:database:create` | Create the configured database |
+| `flow:database:drop` | Drop the configured database (requires `--force`) |
+| `flow:sql:run` | Execute SQL directly on the database |
+
+All commands accept `--connection` (`-c`) to target a specific connection.
+
+### Migration Commands
+
+These commands are available when `migrations.enabled: true` for at least one connection.
+
+| Command | Description |
+|---------|-------------|
+| `flow:migrations:diff` | Generate a migration by comparing the database to the catalog |
+| `flow:migrations:generate` | Generate a blank migration |
+| `flow:migrations:migrate` | Execute pending migrations |
+| `flow:migrations:execute` | Execute a single migration version |
+| `flow:migrations:status` | View migration status |
+| `flow:migrations:current` | Output the current migration version |
+| `flow:migrations:latest` | Output the latest available migrations |
+| `flow:migrations:list` | List all available migrations |
+| `flow:migrations:up-to-date` | Check if all migrations have been executed |
+
+**Common options:**
+
+| Option | Description |
+|--------|-------------|
+| `--connection` (`-c`) | Target a specific connection |
+| `--dry-run` | Preview changes without applying (migrate, execute) |
+| `--all-or-nothing` | Wrap all migrations in a single transaction (migrate) |
+| `--up` / `--down` | Migration direction (execute) |
+| `--allow-empty-diff` | Don't fail when no changes detected (diff) |
+| `--from-empty-schema` | Generate as if the database were empty (diff) |
+
+## Migration Workflow
+
+### Directory Structure
+
+Migrations are organized as directories, one per version:
+
+```
+migrations/
+  20260401120000_create_users/
+    migration.php
+    rollback.php
+  20260402150000_add_orders/
+    migration.php
+    rollback.php
+```
+
+Each directory name follows the pattern `{version}` or `{version}_{name}`, where version is a numeric timestamp
+(e.g. `20260401120000`) and name is an optional description.
+
+### Generating Migrations from Schema Diff
+
+Compare the current database to your catalog providers and generate migration SQL automatically:
+
+```bash
+php bin/console flow:migrations:diff
+```
+
+This creates a new versioned directory with `migration.php` containing the SQL to bring the database in sync
+with the catalog, and `rollback.php` with the reverse operations (if `generate_rollback` is enabled).
+
+Use `--from-empty-schema` to generate a migration as if the database were empty (useful for initial setup).
+
+### Generating Blank Migrations
+
+Create an empty migration for manual SQL (data migrations, custom operations):
+
+```bash
+php bin/console flow:migrations:generate
+```
+
+### Executing Migrations
+
+Run all pending migrations:
+
+```bash
+php bin/console flow:migrations:migrate
+```
+
+Preview without applying:
+
+```bash
+php bin/console flow:migrations:migrate --dry-run
+```
+
+Execute a single version:
+
+```bash
+php bin/console flow:migrations:execute 20260401120000 --up
+```
+
+### Checking Status
+
+```bash
+php bin/console flow:migrations:status
+php bin/console flow:migrations:up-to-date
+```
+
+## Multi-Connection Support
+
+The bundle supports multiple independent PostgreSQL connections:
+
+```yaml
+flow_postgresql:
+  connections:
+    default:
+      dsn: '%env(DATABASE_URL)%'
+
+    reporting:
+      dsn: '%env(REPORTING_DATABASE_URL)%'
+
+    analytics:
+      dsn: '%env(ANALYTICS_DATABASE_URL)%'
+
+  migrations:
+    enabled: true
+    directory: "%kernel.project_dir%/migrations"
+```
+
+Each connection gets its own set of services (`flow.postgresql.{name}.*`). The first connection is automatically
+aliased to the base interfaces (`Client`, `ConnectionParameters`, `Migrator`, etc.), allowing direct type-hint
+injection without specifying a connection name.
+
+When migrations are enabled, migration services are registered for every connection. The same migration
+directory and configuration is shared across all connections.
+
+Target a specific connection with any command:
+
+```bash
+php bin/console flow:migrations:migrate --connection=reporting
+```
+
+## Complete Example
+
+```yaml
+# config/packages/flow_postgresql.yaml
+flow_postgresql:
+  connections:
+    default:
+      dsn: '%env(DATABASE_URL)%'
+
+      telemetry:
+        service_id: "flow.telemetry"
+        trace_queries: true
+        trace_transactions: true
+        collect_metrics: true
+        log_queries: false
+        max_query_length: 1000
+
+  migrations:
+    enabled: true
+    directory: "%kernel.project_dir%/migrations"
+    namespace: "App\\Migrations"
+    table_name: "flow_migrations"
+    table_schema: "public"
+    all_or_nothing: false
+    generate_rollback: true
+
+  catalog_providers:
+    - catalog:
+        schemas:
+          - name: "public"
+            tables:
+              - name: "users"
+                columns:
+                  - name: "id"
+                    type: { name: "int4", schema: "pg_catalog" }
+                    nullable: false
+                  - name: "email"
+                    type: { name: "varchar", schema: "pg_catalog" }
+                    nullable: false
+                  - name: "created_at"
+                    type: { name: "timestamptz", schema: "pg_catalog" }
+                    nullable: false
+```
diff --git a/documentation/components/libs/postgresql/client-object-mapping.md b/documentation/components/libs/postgresql/client-object-mapping.md
index 182862201e..372ffc21b2 100644
--- a/documentation/components/libs/postgresql/client-object-mapping.md
+++ b/documentation/components/libs/postgresql/client-object-mapping.md
@@ -12,7 +12,7 @@ methods. This is useful for working with DTOs, entities, or value objects.
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{pgsql_client, pgsql_connection, pgsql_mapper};
+use function Flow\PostgreSql\DSL\{constructor_mapper, pgsql_client, pgsql_connection};
 
 // Define a DTO
 readonly class User
@@ -25,15 +25,14 @@ readonly class User
     ) {}
 }
 
-// Create client with mapper
+// Create client
 $client = pgsql_client(
     pgsql_connection('host=localhost dbname=mydb'),
-    mapper: pgsql_mapper(),
 );
 
 // Fetch single object (or null)
 $user = $client->fetchInto(
-    User::class,
+    constructor_mapper(User::class),
     'SELECT id, name, email, active FROM users WHERE id = $1',
     [1]
 );
@@ -51,7 +50,7 @@ Returns the first row mapped to an object, or `null` if no rows:
 <?php
 
 $user = $client->fetchInto(
-    User::class,
+    constructor_mapper(User::class),
     'SELECT id, name, email, active FROM users WHERE email = $1',
     ['john@example.com']
 );
@@ -68,7 +67,7 @@ use Flow\PostgreSql\Client\Exception\QueryException;
 
 try {
     $user = $client->fetchOneInto(
-        User::class,
+        constructor_mapper(User::class),
         'SELECT id, name, email, active FROM users WHERE id = $1',
         [1]
     );
@@ -86,7 +85,7 @@ Returns an array of objects:
 
 /** @var User[] $users */
 $users = $client->fetchAllInto(
-    User::class,
+    constructor_mapper(User::class),
     'SELECT id, name, email, active FROM users WHERE active = $1 ORDER BY name',
     [true]
 );
@@ -98,7 +97,7 @@ foreach ($users as $user) {
 
 ## ConstructorMapper
 
-The default `pgsql_mapper()` creates a `ConstructorMapper` that:
+The `constructor_mapper(ClassName::class)` DSL function creates a `ConstructorMapper` that:
 
 1. Maps column names directly to constructor parameter names (1:1 matching)
 2. Passes values as-is to the constructor (no type coercion)
@@ -119,7 +118,7 @@ readonly class Product
 }
 
 $products = $client->fetchAllInto(
-    Product::class,
+    constructor_mapper(Product::class),
     'SELECT id, name, price, description FROM products'
 );
 ```
@@ -144,7 +143,7 @@ readonly class UserProfile
 
 // Alias snake_case columns to match parameter names
 $profile = $client->fetchInto(
-    UserProfile::class,
+    constructor_mapper(UserProfile::class),
     'SELECT id, first_name AS firstName, last_name AS lastName, created_at AS createdAt
      FROM users WHERE id = $1',
     [1]
@@ -165,7 +164,7 @@ readonly class UserMapper implements RowMapper
     /**
      * @param array<string, mixed> $row
      */
-    public function map(string $class, array $row): object
+    public function map(array $row): object
     {
         return new User(
             id: (int) $row['id'],
@@ -176,18 +175,15 @@ readonly class UserMapper implements RowMapper
     }
 }
 
-// Use custom mapper
 $client = pgsql_client(
     pgsql_connection('host=localhost dbname=mydb'),
-    mapper: new UserMapper(),
 );
 
-// Or override per-call
+// Use custom mapper
 $user = $client->fetchInto(
-    User::class,
+    new UserMapper(),
     'SELECT * FROM users WHERE id = $1',
     [1],
-    mapper: new UserMapper(),
 );
 ```
 
@@ -200,7 +196,7 @@ Map objects while streaming large result sets:
 
 $cursor = $client->cursor('SELECT * FROM large_table');
 
-foreach ($cursor->map(User::class) as $user) {
+foreach ($cursor->map(constructor_mapper(User::class)) as $user) {
     // Process one object at a time
     processUser($user);
 }
@@ -226,7 +222,7 @@ readonly class OrderWithUser
 
 readonly class OrderMapper implements RowMapper
 {
-    public function map(string $class, array $row): object
+    public function map(array $row): object
     {
         $user = new User(
             id: (int) $row['user_id'],
@@ -244,12 +240,11 @@ readonly class OrderMapper implements RowMapper
 }
 
 $order = $client->fetchInto(
-    OrderWithUser::class,
+    new OrderMapper(),
     'SELECT o.id AS order_id, o.total, u.id AS user_id, u.name AS user_name, u.email AS user_email
      FROM orders o JOIN users u ON o.user_id = u.id
      WHERE o.id = $1',
     [1],
-    mapper: new OrderMapper(),
 );
 ```
 
diff --git a/documentation/components/libs/postgresql/client-types.md b/documentation/components/libs/postgresql/client-types.md
index 3d08308060..687d210097 100644
--- a/documentation/components/libs/postgresql/client-types.md
+++ b/documentation/components/libs/postgresql/client-types.md
@@ -96,7 +96,7 @@ When automatic detection isn't sufficient, use `typed()` to specify the exact Po
 
 use function Flow\PostgreSql\DSL\{
     pgsql_client, pgsql_connection, typed,
-    pgsql_type_uuid, pgsql_type_json, pgsql_type_date, pgsql_type_int4_array
+    value_type_uuid, value_type_json, value_type_date, value_type_int4_array
 };
 
 $client = pgsql_client(pgsql_connection('host=localhost dbname=mydb'));
@@ -104,25 +104,25 @@ $client = pgsql_client(pgsql_connection('host=localhost dbname=mydb'));
 // UUID - string that should be treated as UUID
 $client->fetch(
     'SELECT * FROM users WHERE id = $1',
-    [typed('550e8400-e29b-41d4-a716-446655440000', pgsql_type_uuid())]
+    [typed('550e8400-e29b-41d4-a716-446655440000', value_type_uuid())]
 );
 
 // JSON - array to be sent as JSON
 $client->execute(
     'INSERT INTO events (payload) VALUES ($1)',
-    [typed(['event' => 'login', 'user_id' => 42], pgsql_type_json())]
+    [typed(['event' => 'login', 'user_id' => 42], value_type_json())]
 );
 
 // DATE - DateTime that should be DATE, not TIMESTAMP
 $client->fetch(
     'SELECT * FROM events WHERE date = $1',
-    [typed(new \DateTimeImmutable('2024-01-15'), pgsql_type_date())]
+    [typed(new \DateTimeImmutable('2024-01-15'), value_type_date())]
 );
 
 // Integer array
 $client->execute(
     'INSERT INTO scores (values) VALUES ($1)',
-    [typed([100, 200, 300], pgsql_type_int4_array())]
+    [typed([100, 200, 300], value_type_int4_array())]
 );
 ```
 
@@ -145,53 +145,53 @@ $client->execute(
 | DSL Function | PostgreSQL Type | Use Case |
 |--------------|-----------------|----------|
 | **String types** | | |
-| `pgsql_type_text()` | TEXT | Text strings |
-| `pgsql_type_varchar()` | VARCHAR | Variable-length strings |
-| `pgsql_type_char()` | CHAR | Fixed-length strings |
+| `value_type_text()` | TEXT | Text strings |
+| `value_type_varchar()` | VARCHAR | Variable-length strings |
+| `value_type_char()` | CHAR | Fixed-length strings |
 | **Integer types** | | |
-| `pgsql_type_int2()` / `pgsql_type_smallint()` | SMALLINT | Small integers |
-| `pgsql_type_int4()` / `pgsql_type_integer()` | INTEGER | Standard integers |
-| `pgsql_type_int8()` / `pgsql_type_bigint()` | BIGINT | Large integers |
+| `value_type_int2()` / `value_type_smallint()` | SMALLINT | Small integers |
+| `value_type_int4()` / `value_type_integer()` | INTEGER | Standard integers |
+| `value_type_int8()` / `value_type_bigint()` | BIGINT | Large integers |
 | **Floating point types** | | |
-| `pgsql_type_float4()` / `pgsql_type_real()` | REAL | Single precision floats |
-| `pgsql_type_float8()` / `pgsql_type_double()` | DOUBLE PRECISION | Double precision floats |
-| `pgsql_type_numeric()` | NUMERIC | Arbitrary precision numbers |
-| `pgsql_type_money()` | MONEY | Currency amounts |
+| `value_type_float4()` / `value_type_real()` | REAL | Single precision floats |
+| `value_type_float8()` / `value_type_double()` | DOUBLE PRECISION | Double precision floats |
+| `value_type_numeric()` | NUMERIC | Arbitrary precision numbers |
+| `value_type_money()` | MONEY | Currency amounts |
 | **Boolean type** | | |
-| `pgsql_type_bool()` / `pgsql_type_boolean()` | BOOLEAN | True/false values |
+| `value_type_bool()` / `value_type_boolean()` | BOOLEAN | True/false values |
 | **Binary types** | | |
-| `pgsql_type_bytea()` | BYTEA | Binary data |
-| `pgsql_type_bit()` | BIT | Bit strings |
-| `pgsql_type_varbit()` | VARBIT | Variable-length bit strings |
+| `value_type_bytea()` | BYTEA | Binary data |
+| `value_type_bit()` | BIT | Bit strings |
+| `value_type_varbit()` | VARBIT | Variable-length bit strings |
 | **Date/time types** | | |
-| `pgsql_type_date()` | DATE | Dates without time |
-| `pgsql_type_time()` | TIME | Time without timezone |
-| `pgsql_type_timetz()` | TIMETZ | Time with timezone |
-| `pgsql_type_timestamp()` | TIMESTAMP | Timestamp without timezone |
-| `pgsql_type_timestamptz()` | TIMESTAMPTZ | Timestamp with timezone |
-| `pgsql_type_interval()` | INTERVAL | Time intervals |
+| `value_type_date()` | DATE | Dates without time |
+| `value_type_time()` | TIME | Time without timezone |
+| `value_type_timetz()` | TIMETZ | Time with timezone |
+| `value_type_timestamp()` | TIMESTAMP | Timestamp without timezone |
+| `value_type_timestamptz()` | TIMESTAMPTZ | Timestamp with timezone |
+| `value_type_interval()` | INTERVAL | Time intervals |
 | **JSON types** | | |
-| `pgsql_type_json()` | JSON | JSON data |
-| `pgsql_type_jsonb()` | JSONB | Binary JSON data |
+| `value_type_json()` | JSON | JSON data |
+| `value_type_jsonb()` | JSONB | Binary JSON data |
 | **UUID type** | | |
-| `pgsql_type_uuid()` | UUID | Universally unique identifiers |
+| `value_type_uuid()` | UUID | Universally unique identifiers |
 | **Network types** | | |
-| `pgsql_type_inet()` | INET | IPv4/IPv6 addresses |
-| `pgsql_type_cidr()` | CIDR | Network addresses |
-| `pgsql_type_macaddr()` | MACADDR | MAC addresses |
-| `pgsql_type_macaddr8()` | MACADDR8 | MAC addresses (EUI-64) |
+| `value_type_inet()` | INET | IPv4/IPv6 addresses |
+| `value_type_cidr()` | CIDR | Network addresses |
+| `value_type_macaddr()` | MACADDR | MAC addresses |
+| `value_type_macaddr8()` | MACADDR8 | MAC addresses (EUI-64) |
 | **Other types** | | |
-| `pgsql_type_xml()` | XML | XML data |
-| `pgsql_type_oid()` | OID | Object identifiers |
+| `value_type_xml()` | XML | XML data |
+| `value_type_oid()` | OID | Object identifiers |
 | **Array types** | | |
-| `pgsql_type_text_array()` | TEXT[] | Array of strings |
-| `pgsql_type_int4_array()` | INTEGER[] | Array of integers |
-| `pgsql_type_int8_array()` | BIGINT[] | Array of big integers |
-| `pgsql_type_float8_array()` | FLOAT8[] | Array of floats |
-| `pgsql_type_bool_array()` | BOOLEAN[] | Array of booleans |
-| `pgsql_type_uuid_array()` | UUID[] | Array of UUIDs |
-| `pgsql_type_json_array()` | JSON[] | Array of JSON |
-| `pgsql_type_jsonb_array()` | JSONB[] | Array of JSONB |
+| `value_type_text_array()` | TEXT[] | Array of strings |
+| `value_type_int4_array()` | INTEGER[] | Array of integers |
+| `value_type_int8_array()` | BIGINT[] | Array of big integers |
+| `value_type_float8_array()` | FLOAT8[] | Array of floats |
+| `value_type_bool_array()` | BOOLEAN[] | Array of booleans |
+| `value_type_uuid_array()` | UUID[] | Array of UUIDs |
+| `value_type_json_array()` | JSON[] | Array of JSON |
+| `value_type_jsonb_array()` | JSONB[] | Array of JSONB |
 
 ## Built-in Value Converters
 
diff --git a/documentation/components/libs/postgresql/condition-builder.md b/documentation/components/libs/postgresql/condition-builder.md
index 6ff67f5f6a..cb9d9adfcf 100644
--- a/documentation/components/libs/postgresql/condition-builder.md
+++ b/documentation/components/libs/postgresql/condition-builder.md
@@ -23,7 +23,7 @@ $conditions = conditions()
 // Use in a query
 $query = select()->from(table('users'))->where($conditions);
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE status = 'active' AND age > 18
 ```
 
@@ -35,7 +35,7 @@ The real power of `ConditionBuilder` is building conditions based on runtime log
 <?php
 
 use function Flow\PostgreSql\DSL\{
-    conditions, select, table, col, eq, gte, like, param
+    conditions, select, table, col, eq, ge, like, param
 };
 
 function buildUserQuery(array $filters): SelectFinalStep
@@ -47,7 +47,7 @@ function buildUserQuery(array $filters): SelectFinalStep
     }
 
     if (array_key_exists('min_age', $filters)) {
-        $conditions = $conditions->and(gte(col('age'), param($filters['min_age'])));
+        $conditions = $conditions->and(ge(col('age'), param($filters['min_age'])));
     }
 
     if (array_key_exists('email_domain', $filters)) {
@@ -66,7 +66,7 @@ function buildUserQuery(array $filters): SelectFinalStep
 
 // Usage
 $query = buildUserQuery(['status' => 'active', 'min_age' => 21]);
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE status = $1 AND age >= $2
 ```
 
@@ -93,7 +93,7 @@ $conditions = conditions()
 
 $query = select()->from(table('users'))->where($conditions);
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE status = 'active' AND (role = 'admin' OR role = 'moderator') AND age > 18
 ```
 
@@ -152,15 +152,15 @@ $conditions = conditions()
 | `getCondition()` | Returns the built `Condition` or `null` if empty |
 | `isEmpty()` | Returns `true` if no conditions have been added |
 
-## Comparison with cond_and/cond_or
+## Comparison with and_/or_
 
-For static conditions known at build time, `cond_and()` and `cond_or()` are simpler:
+For static conditions known at build time, `and_()` and `or_()` are simpler:
 
 ```php
-// Static conditions - use cond_and/cond_or
+// Static conditions - use and_/or_
 $query = select()
     ->from(table('users'))
-    ->where(cond_and(
+    ->where(and_(
         eq(col('active'), literal(true)),
         gt(col('age'), literal(18))
     ));
diff --git a/documentation/components/libs/postgresql/copy-query-builder.md b/documentation/components/libs/postgresql/copy-query-builder.md
index 434ffb6437..56b5c521f4 100644
--- a/documentation/components/libs/postgresql/copy-query-builder.md
+++ b/documentation/components/libs/postgresql/copy-query-builder.md
@@ -19,7 +19,7 @@ $query = copy()
     ->from('users')
     ->file('/tmp/users.csv');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY users FROM '/tmp/users.csv'
 ```
 
@@ -35,7 +35,7 @@ $query = copy()
     ->columns('id', 'name', 'email')
     ->file('/tmp/users.csv');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY users(id, name, email) FROM '/tmp/users.csv'
 ```
 
@@ -52,7 +52,7 @@ $query = copy()
     ->stdin()
     ->format(CopyFormat::CSV);
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY users FROM STDIN WITH (format csv)
 ```
 
@@ -67,7 +67,7 @@ $query = copy()
     ->from('logs')
     ->program('gunzip -c /var/log/app.log.gz');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY logs FROM PROGRAM 'gunzip -c /var/log/app.log.gz'
 ```
 
@@ -90,7 +90,7 @@ $query = copy()
     ->escape('\\')
     ->encoding('UTF8');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY data FROM '/tmp/data.csv' WITH (format csv, delimiter ';', null 'NULL', header true, quote '''', escape '\\', encoding 'UTF8')
 ```
 
@@ -110,7 +110,7 @@ $query = copy()
     ->format(CopyFormat::CSV)
     ->forceNotNull('name', 'email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY users FROM '/tmp/users.csv' WITH (format csv, force_not_null (name, email))
 ```
 
@@ -130,7 +130,7 @@ $query = copy()
     ->format(CopyFormat::CSV)
     ->forceNull('description', 'notes');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY users FROM '/tmp/users.csv' WITH (format csv, force_null (description, notes))
 ```
 
@@ -149,7 +149,7 @@ $query = copy()
     ->file('/tmp/events.csv')
     ->onError(CopyOnError::IGNORE);
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY events FROM '/tmp/events.csv' WITH (on_error 'ignore')
 ```
 
@@ -166,7 +166,7 @@ $query = copy()
     ->to('users')
     ->file('/tmp/users.csv');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY users TO '/tmp/users.csv'
 ```
 
@@ -182,7 +182,7 @@ $query = copy()
     ->columns('id', 'name', 'email')
     ->file('/tmp/users.csv');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY users(id, name, email) TO '/tmp/users.csv'
 ```
 
@@ -199,7 +199,7 @@ $query = copy()
     ->stdout()
     ->format(CopyFormat::CSV);
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY users TO STDOUT WITH (format csv)
 ```
 
@@ -214,7 +214,7 @@ $query = copy()
     ->to('logs')
     ->program('gzip > /tmp/logs.csv.gz');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY logs TO PROGRAM 'gzip > /tmp/logs.csv.gz'
 ```
 
@@ -237,7 +237,7 @@ $query = copy()
     ->file('/tmp/active_users.csv')
     ->format(CopyFormat::CSV);
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY (SELECT id, name FROM users) TO '/tmp/active_users.csv' WITH (format csv)
 ```
 
@@ -254,7 +254,7 @@ $query = copy()
     ->file('/tmp/data.bin')
     ->format(CopyFormat::BINARY);
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY data TO '/tmp/data.bin' WITH (format binary)
 ```
 
@@ -275,7 +275,7 @@ $query = copy()
     ->format(CopyFormat::CSV)
     ->forceQuote('name', 'description');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY products TO '/tmp/products.csv' WITH (format csv, force_quote (name, description))
 
 // Quote all columns
@@ -285,7 +285,7 @@ $query = copy()
     ->format(CopyFormat::CSV)
     ->forceQuoteAll();
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY products TO '/tmp/products.csv' WITH (format csv, force_quote *)
 ```
 
@@ -300,14 +300,14 @@ $query = copy()
     ->from('analytics.events')
     ->file('/tmp/events.csv');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY analytics.events FROM '/tmp/events.csv'
 
 $query = copy()
     ->to('analytics.events')
     ->file('/tmp/events.csv');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COPY analytics.events TO '/tmp/events.csv'
 ```
 
diff --git a/documentation/components/libs/postgresql/delete-query-builder.md b/documentation/components/libs/postgresql/delete-query-builder.md
index 0bc6046b26..553a91b3ec 100644
--- a/documentation/components/libs/postgresql/delete-query-builder.md
+++ b/documentation/components/libs/postgresql/delete-query-builder.md
@@ -17,7 +17,7 @@ $query = delete()
     ->from('users')
     ->where(eq(col('id'), literal(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // DELETE FROM users WHERE id = 1
 ```
 
@@ -34,7 +34,7 @@ $query = delete()
     ->from('users')
     ->where(eq(col('id'), param(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // DELETE FROM users WHERE id = $1
 ```
 
@@ -49,7 +49,7 @@ $query = delete()
     ->from('users', 'u')
     ->where(eq(col('u.id'), literal(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // DELETE FROM users u WHERE u.id = 1
 ```
 
@@ -67,7 +67,7 @@ $query = delete()
     ->using(table('users'))
     ->where(eq(col('orders.user_id'), col('users.id')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // DELETE FROM orders USING users WHERE orders.user_id = users.id
 ```
 
@@ -77,7 +77,7 @@ echo $query->toSQL();
 <?php
 
 use function Flow\PostgreSql\DSL\{
-    delete, select, col, table, any_sub_select
+    delete, select, col, table, any_
 };
 
 use Flow\PostgreSql\QueryBuilder\Condition\ComparisonOperator;
@@ -88,9 +88,9 @@ $subquery = select()
 
 $query = delete()
     ->from('users')
-    ->where(any_sub_select(col('id'), ComparisonOperator::EQ, $subquery));
+    ->where(any_(col('id'), ComparisonOperator::EQ, $subquery));
 
-echo $query->toSQL();
+echo $query->toSql();
 // DELETE FROM users WHERE id = ANY (SELECT user_id FROM inactive_users)
 ```
 
@@ -107,7 +107,7 @@ $query = delete()
     ->where(eq(col('id'), literal(1)))
     ->returning(col('id'), col('name'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // DELETE FROM users WHERE id = 1 RETURNING id, name
 
 // Return all columns
@@ -116,7 +116,7 @@ $query = delete()
     ->where(eq(col('id'), literal(1)))
     ->returningAll();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DELETE FROM users WHERE id = 1 RETURNING *
 ```
 
@@ -126,19 +126,19 @@ echo $query->toSQL();
 <?php
 
 use function Flow\PostgreSql\DSL\{
-    delete, col, eq, lt, literal, cond_and
+    delete, col, eq, lt, literal, and_
 };
 
 $query = delete()
     ->from('sessions')
     ->where(
-        cond_and(
+        and_(
             eq(col('active'), literal(false)),
             lt(col('expires_at'), literal('2024-01-01'))
         )
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // DELETE FROM sessions WHERE active = false AND expires_at < '2024-01-01'
 ```
 
diff --git a/documentation/components/libs/postgresql/domain-query-builder.md b/documentation/components/libs/postgresql/domain-query-builder.md
index 1e10ba357a..c561173f30 100644
--- a/documentation/components/libs/postgresql/domain-query-builder.md
+++ b/documentation/components/libs/postgresql/domain-query-builder.md
@@ -21,7 +21,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->domain('email')
     ->as('text');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE DOMAIN email AS text
 ```
 
@@ -35,7 +35,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->domain('public.email')
     ->as('text');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE DOMAIN public.email AS text
 ```
 
@@ -50,7 +50,7 @@ $query = create()->domain('email')
     ->as('text')
     ->notNull();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE DOMAIN email AS text NOT NULL
 ```
 
@@ -67,7 +67,7 @@ $query = create()->domain('email')
     ->as('text')
     ->null();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE DOMAIN email AS text NULL
 ```
 
@@ -84,7 +84,7 @@ $query = create()->domain('email')
     ->as('text')
     ->default("'default@example.com'");
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE DOMAIN email AS text DEFAULT 'default@example.com'
 ```
 
@@ -101,7 +101,7 @@ $query = create()->domain('positive_int')
     ->as('int4')
     ->check('VALUE > 0');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE DOMAIN positive_int AS int4 CHECK (value > 0)
 ```
 
@@ -119,7 +119,7 @@ $query = create()->domain('positive_int')
     ->constraint('positive_check')
     ->check('VALUE > 0');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE DOMAIN positive_int AS int4 CONSTRAINT positive_check CHECK (value > 0)
 ```
 
@@ -136,7 +136,7 @@ $query = create()->domain('email')
     ->as('text')
     ->collate('en_US');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE DOMAIN email AS text COLLATE "en_US"
 ```
 
@@ -152,7 +152,7 @@ $query = create()->domain('email')
     ->notNull()
     ->check("VALUE ~ '^.+@.+$'");
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE DOMAIN email AS text NOT NULL CHECK (value ~ '^.+@.+$')
 ```
 
@@ -168,7 +168,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->domain('email')
     ->setNotNull();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER DOMAIN email SET NOT NULL
 ```
 
@@ -182,7 +182,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->domain('email')
     ->dropNotNull();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER DOMAIN email DROP NOT NULL
 ```
 
@@ -196,7 +196,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->domain('email')
     ->setDefault("'default@example.com'");
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER DOMAIN email SET DEFAULT 'default@example.com'
 ```
 
@@ -210,7 +210,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->domain('email')
     ->dropDefault();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER DOMAIN email DROP DEFAULT
 ```
 
@@ -224,7 +224,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->domain('email')
     ->addConstraint('valid_email', "VALUE ~ '^.+@.+$'");
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER DOMAIN email ADD CONSTRAINT valid_email CHECK (value ~ '^.+@.+$')
 ```
 
@@ -238,7 +238,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->domain('email')
     ->dropConstraint('valid_email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER DOMAIN email DROP CONSTRAINT valid_email
 ```
 
@@ -253,7 +253,7 @@ $query = alter()->domain('email')
     ->dropConstraint('valid_email')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER DOMAIN email DROP CONSTRAINT valid_email CASCADE
 ```
 
@@ -269,7 +269,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->domain('email')
     ->validateConstraint('valid_email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER DOMAIN email VALIDATE CONSTRAINT valid_email
 ```
 
@@ -283,7 +283,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->domain('public.email')
     ->setNotNull();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER DOMAIN public.email SET NOT NULL
 ```
 
@@ -298,7 +298,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->domain('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP DOMAIN email
 ```
 
@@ -312,7 +312,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->domain('email')
     ->ifExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP DOMAIN IF EXISTS email
 ```
 
@@ -328,7 +328,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->domain('email')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP DOMAIN email CASCADE
 ```
 
@@ -344,7 +344,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->domain('email')
     ->restrict();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP DOMAIN email
 ```
 
@@ -357,7 +357,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->domain('email', 'phone', 'url');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP DOMAIN email, phone, url
 ```
 
@@ -372,7 +372,7 @@ $query = drop()->domain('email')
     ->ifExists()
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP DOMAIN IF EXISTS email CASCADE
 ```
 
diff --git a/documentation/components/libs/postgresql/extension-query-builder.md b/documentation/components/libs/postgresql/extension-query-builder.md
index f37ef339d9..10d1e8d2a3 100644
--- a/documentation/components/libs/postgresql/extension-query-builder.md
+++ b/documentation/components/libs/postgresql/extension-query-builder.md
@@ -18,7 +18,7 @@ use function Flow\PostgreSql\DSL\create;
 
 $query = create()->extension('uuid-ossp');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE EXTENSION "uuid-ossp"
 ```
 
@@ -32,7 +32,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->extension('uuid-ossp')
     ->ifNotExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE EXTENSION IF NOT EXISTS "uuid-ossp"
 ```
 
@@ -48,7 +48,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->extension('uuid-ossp')
     ->schema('public');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE EXTENSION "uuid-ossp" SCHEMA public
 ```
 
@@ -64,7 +64,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->extension('postgis')
     ->version('3.0');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE EXTENSION postgis VERSION "3.0"
 ```
 
@@ -80,7 +80,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->extension('postgis_raster')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE EXTENSION postgis_raster CASCADE
 ```
 
@@ -97,7 +97,7 @@ $query = create()->extension('postgis')
     ->version('3.0')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE EXTENSION IF NOT EXISTS postgis SCHEMA extensions VERSION "3.0" CASCADE
 ```
 
@@ -115,7 +115,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->extension('postgis')
     ->update();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER EXTENSION postgis UPDATE
 ```
 
@@ -129,7 +129,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->extension('postgis')
     ->updateTo('3.0');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER EXTENSION postgis UPDATE TO "3.0"
 ```
 
@@ -145,7 +145,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->extension('uuid-ossp')
     ->setSchema('public');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER EXTENSION "uuid-ossp" SET SCHEMA public
 ```
 
@@ -161,7 +161,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->extension('my_extension')
     ->addFunction('my_func', ['integer', 'text']);
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER EXTENSION my_extension ADD FUNCTION my_func("integer", text)
 ```
 
@@ -175,7 +175,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->extension('my_extension')
     ->addTable('my_table');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER EXTENSION my_extension ADD TABLE my_table
 ```
 
@@ -189,13 +189,13 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->extension('my_extension')
     ->dropFunction('my_func', ['integer']);
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER EXTENSION my_extension DROP FUNCTION my_func("integer")
 
 $query = alter()->extension('my_extension')
     ->dropTable('my_table');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER EXTENSION my_extension DROP TABLE my_table
 ```
 
@@ -210,7 +210,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->extension('uuid-ossp');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP EXTENSION "uuid-ossp"
 ```
 
@@ -224,7 +224,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->extension('uuid-ossp')
     ->ifExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP EXTENSION IF EXISTS "uuid-ossp"
 ```
 
@@ -240,7 +240,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->extension('postgis')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP EXTENSION postgis CASCADE
 ```
 
@@ -256,7 +256,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->extension('uuid-ossp')
     ->restrict();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP EXTENSION "uuid-ossp"
 ```
 
@@ -269,7 +269,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->extension('postgis', 'postgis_raster', 'postgis_topology');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP EXTENSION postgis, postgis_raster, postgis_topology
 ```
 
@@ -284,7 +284,7 @@ $query = drop()->extension('postgis')
     ->ifExists()
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP EXTENSION IF EXISTS postgis CASCADE
 ```
 
diff --git a/documentation/components/libs/postgresql/function-procedure-query-builder.md b/documentation/components/libs/postgresql/function-procedure-query-builder.md
index ac5fa4e033..f837415820 100644
--- a/documentation/components/libs/postgresql/function-procedure-query-builder.md
+++ b/documentation/components/libs/postgresql/function-procedure-query-builder.md
@@ -14,15 +14,15 @@ CREATE FUNCTION, CREATE PROCEDURE, ALTER FUNCTION, ALTER PROCEDURE, DROP FUNCTIO
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, func_arg};
+use function Flow\PostgreSql\DSL\{create, func_arg, column_type_integer};
 
 $query = create()->function('add_numbers')
-    ->arguments(func_arg('integer')->named('a'), func_arg('integer')->named('b'))
+    ->arguments(func_arg(column_type_integer())->named('a'), func_arg(column_type_integer())->named('b'))
     ->returns('integer')
     ->language('sql')
     ->as('SELECT a + b');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE FUNCTION add_numbers(IN a "integer", IN b "integer") RETURNS "integer" LANGUAGE sql AS $$SELECT a + b$$
 ```
 
@@ -31,15 +31,15 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, func_arg};
+use function Flow\PostgreSql\DSL\{create, func_arg, column_type_integer};
 
 $query = create()->function('increment')
-    ->arguments(func_arg('integer')->named('val'))
+    ->arguments(func_arg(column_type_integer())->named('val'))
     ->returns('integer')
     ->language('plpgsql')
     ->as('BEGIN RETURN val + 1; END;');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE FUNCTION increment(IN val "integer") RETURNS "integer" LANGUAGE plpgsql AS $$BEGIN RETURN val + 1; END;$$
 ```
 
@@ -56,7 +56,7 @@ $query = create()->function('my_func')
     ->language('sql')
     ->as('SELECT 1');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE OR REPLACE FUNCTION my_func() RETURNS "integer" LANGUAGE sql AS $$SELECT 1$$
 ```
 
@@ -74,7 +74,7 @@ $query = create()->function('get_users')
     ->language('sql')
     ->as('SELECT id, name FROM users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE FUNCTION get_users() RETURNS TABLE (id "integer", name text) LANGUAGE sql AS $$SELECT id, name FROM users$$
 ```
 
@@ -92,7 +92,7 @@ $query = create()->function('get_user_ids')
     ->language('sql')
     ->as('SELECT id FROM users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE FUNCTION get_user_ids() RETURNS SETOF "integer" LANGUAGE sql AS $$SELECT id FROM users$$
 ```
 
@@ -110,7 +110,7 @@ $query = create()->function('log_event')
     ->language('sql')
     ->as('INSERT INTO logs (msg) VALUES (current_timestamp)');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE FUNCTION log_event() RETURNS void LANGUAGE sql AS $$INSERT INTO logs (msg) VALUES (current_timestamp)$$
 ```
 
@@ -119,11 +119,11 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, func_arg};
+use function Flow\PostgreSql\DSL\{create, func_arg, column_type_integer};
 
 // IMMUTABLE - same input always produces same output
 $query = create()->function('double')
-    ->arguments(func_arg('integer')->named('x'))
+    ->arguments(func_arg(column_type_integer())->named('x'))
     ->returns('integer')
     ->language('sql')
     ->immutable()
@@ -149,11 +149,11 @@ $query = create()->function('get_time')
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, func_arg};
+use function Flow\PostgreSql\DSL\{create, func_arg, column_type_integer};
 use Flow\PostgreSql\QueryBuilder\Schema\Function\ParallelSafety;
 
 $query = create()->function('compute')
-    ->arguments(func_arg('integer')->named('x'))
+    ->arguments(func_arg(column_type_integer())->named('x'))
     ->returns('integer')
     ->language('sql')
     ->parallel(ParallelSafety::SAFE)
@@ -170,10 +170,10 @@ $query = create()->function('compute')
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, func_arg};
+use function Flow\PostgreSql\DSL\{create, func_arg, column_type_integer};
 
 $query = create()->function('safe_add')
-    ->arguments(func_arg('integer')->named('a'), func_arg('integer')->named('b'))
+    ->arguments(func_arg(column_type_integer())->named('a'), func_arg(column_type_integer())->named('b'))
     ->returns('integer')
     ->language('sql')
     ->strict()  // Returns NULL if any input is NULL
@@ -181,7 +181,7 @@ $query = create()->function('safe_add')
 
 // Or explicitly call on NULL input
 $query = create()->function('nullable_add')
-    ->arguments(func_arg('integer')->named('a'), func_arg('integer')->named('b'))
+    ->arguments(func_arg(column_type_integer())->named('a'), func_arg(column_type_integer())->named('b'))
     ->returns('integer')
     ->language('sql')
     ->calledOnNullInput()  // Function is called even with NULL inputs
@@ -265,22 +265,22 @@ The `func_arg()` DSL function creates function arguments with various options:
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\func_arg;
+use function Flow\PostgreSql\DSL\{func_arg, column_type_integer, column_type_text};
 
 // Basic argument
-$arg = func_arg('integer');
+$arg = func_arg(column_type_integer());
 
 // Named argument
-$arg = func_arg('integer')->named('user_id');
+$arg = func_arg(column_type_integer())->named('user_id');
 
 // With default value
-$arg = func_arg('integer')->named('limit')->default('100');
+$arg = func_arg(column_type_integer())->named('limit')->default('100');
 
 // Argument modes
-$arg = func_arg('integer')->in();       // IN - input only (default)
-$arg = func_arg('integer')->out();      // OUT - output only
-$arg = func_arg('integer')->inout();    // INOUT - both input and output
-$arg = func_arg('text')->variadic();    // VARIADIC - variable number of arguments
+$arg = func_arg(column_type_integer())->in();       // IN - input only (default)
+$arg = func_arg(column_type_integer())->out();      // OUT - output only
+$arg = func_arg(column_type_integer())->inout();    // INOUT - both input and output
+$arg = func_arg(column_type_text())->variadic();    // VARIADIC - variable number of arguments
 ```
 
 ### Complete Example
@@ -288,14 +288,14 @@ $arg = func_arg('text')->variadic();    // VARIADIC - variable number of argumen
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, func_arg};
+use function Flow\PostgreSql\DSL\{create, func_arg, column_type_numeric};
 use Flow\PostgreSql\QueryBuilder\Schema\Function\ParallelSafety;
 
 $query = create()->function('calculate_discount')
     ->orReplace()
     ->arguments(
-        func_arg('numeric')->named('price'),
-        func_arg('numeric')->named('discount_percent')->default('10')
+        func_arg(column_type_numeric())->named('price'),
+        func_arg(column_type_numeric())->named('discount_percent')->default('10')
     )
     ->returns('numeric')
     ->language('sql')
@@ -312,14 +312,14 @@ $query = create()->function('calculate_discount')
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, func_arg};
+use function Flow\PostgreSql\DSL\{create, func_arg, column_type_integer};
 
 $query = create()->procedure('update_stats')
-    ->arguments(func_arg('integer')->named('user_id'))
+    ->arguments(func_arg(column_type_integer())->named('user_id'))
     ->language('plpgsql')
     ->as('BEGIN UPDATE stats SET count = count + 1 WHERE id = user_id; END;');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE PROCEDURE update_stats(IN user_id "integer") LANGUAGE plpgsql AS $$BEGIN UPDATE stats SET count = count + 1 WHERE id = user_id; END;$$
 ```
 
@@ -335,7 +335,7 @@ $query = create()->procedure('my_proc')
     ->language('sql')
     ->as('SELECT 1');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE OR REPLACE PROCEDURE my_proc() LANGUAGE sql AS $$SELECT 1$$
 ```
 
@@ -372,13 +372,13 @@ $query = create()->procedure('my_proc')
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{alter, func_arg};
+use function Flow\PostgreSql\DSL\{alter, func_arg, column_type_integer};
 
 $query = alter()->function('my_func')
-    ->arguments(func_arg('integer'))
+    ->arguments(func_arg(column_type_integer()))
     ->immutable();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER FUNCTION my_func("integer") IMMUTABLE
 ```
 
@@ -387,14 +387,14 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{alter, func_arg};
+use function Flow\PostgreSql\DSL\{alter, func_arg, column_type_integer};
 use Flow\PostgreSql\QueryBuilder\Schema\Function\ParallelSafety;
 
 $query = alter()->function('my_func')
-    ->arguments(func_arg('integer'))
+    ->arguments(func_arg(column_type_integer()))
     ->parallel(ParallelSafety::SAFE);
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER FUNCTION my_func("integer") PARALLEL safe
 ```
 
@@ -403,13 +403,13 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{alter, func_arg};
+use function Flow\PostgreSql\DSL\{alter, func_arg, column_type_text};
 
 $query = alter()->function('old_name')
-    ->arguments(func_arg('text'))
+    ->arguments(func_arg(column_type_text()))
     ->renameTo('new_name');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER FUNCTION old_name(text) RENAME TO new_name
 ```
 
@@ -418,10 +418,10 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{alter, func_arg};
+use function Flow\PostgreSql\DSL\{alter, func_arg, column_type_integer};
 
 $query = alter()->function('my_func')
-    ->arguments(func_arg('integer'))
+    ->arguments(func_arg(column_type_integer()))
     ->cost(500);
 
 $query = alter()->function('set_returning_func')
@@ -455,13 +455,13 @@ $query = alter()->function('my_func')
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{alter, func_arg};
+use function Flow\PostgreSql\DSL\{alter, func_arg, column_type_integer};
 
 $query = alter()->procedure('old_proc')
-    ->arguments(func_arg('integer'))
+    ->arguments(func_arg(column_type_integer()))
     ->renameTo('new_proc');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER PROCEDURE old_proc("integer") RENAME TO new_proc
 ```
 
@@ -475,7 +475,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->procedure('my_proc')
     ->securityDefiner();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER PROCEDURE my_proc SECURITY DEFINER
 ```
 
@@ -507,7 +507,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->function('my_func');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP FUNCTION my_func
 ```
 
@@ -516,12 +516,12 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{drop, func_arg};
+use function Flow\PostgreSql\DSL\{drop, func_arg, column_type_integer, column_type_text};
 
 $query = drop()->function('my_func')
-    ->arguments(func_arg('integer'), func_arg('text'));
+    ->arguments(func_arg(column_type_integer()), func_arg(column_type_text()));
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP FUNCTION my_func("integer", text)
 ```
 
@@ -530,13 +530,13 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{drop, func_arg};
+use function Flow\PostgreSql\DSL\{drop, func_arg, column_type_integer};
 
 $query = drop()->function('my_func')
     ->ifExists()
-    ->arguments(func_arg('integer'));
+    ->arguments(func_arg(column_type_integer()));
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP FUNCTION IF EXISTS my_func("integer")
 ```
 
@@ -545,14 +545,14 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{drop, func_arg};
+use function Flow\PostgreSql\DSL\{drop, func_arg, column_type_integer, column_type_text};
 
 $query = drop()->function('my_func')
     ->ifExists()
-    ->arguments(func_arg('integer'), func_arg('text'))
+    ->arguments(func_arg(column_type_integer()), func_arg(column_type_text()))
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP FUNCTION IF EXISTS my_func("integer", text) CASCADE
 ```
 
@@ -566,7 +566,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->function('my_func')
     ->restrict();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP FUNCTION my_func RESTRICT
 ```
 
@@ -581,7 +581,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->procedure('my_proc');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP PROCEDURE my_proc
 ```
 
@@ -590,14 +590,14 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{drop, func_arg};
+use function Flow\PostgreSql\DSL\{drop, func_arg, column_type_integer};
 
 $query = drop()->procedure('my_proc')
     ->ifExists()
-    ->arguments(func_arg('integer'))
+    ->arguments(func_arg(column_type_integer()))
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP PROCEDURE IF EXISTS my_proc("integer") CASCADE
 ```
 
@@ -612,7 +612,7 @@ use function Flow\PostgreSql\DSL\call;
 
 $query = call('update_stats');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CALL update_stats()
 ```
 
@@ -626,7 +626,7 @@ use function Flow\PostgreSql\DSL\call;
 $query = call('update_stats')
     ->with(123, 'test');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CALL update_stats(123, 'test')
 ```
 
@@ -640,7 +640,7 @@ use function Flow\PostgreSql\DSL\call;
 $query = call('process_data')
     ->with(42, 'hello', 3.14, true, null);
 
-echo $query->toSQL();
+echo $query->toSql();
 // CALL process_data(42, 'hello', 3.14, true, NULL)
 ```
 
@@ -655,7 +655,7 @@ use function Flow\PostgreSql\DSL\do_block;
 
 $query = do_block('BEGIN RAISE NOTICE $$Hello$$; END;');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DO $outer$BEGIN RAISE NOTICE $$Hello$$; END;$outer$ LANGUAGE plpgsql
 ```
 
@@ -668,7 +668,7 @@ use function Flow\PostgreSql\DSL\do_block;
 
 $query = do_block('SELECT 1')->language('sql');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DO $$SELECT 1$$ LANGUAGE sql
 ```
 
@@ -676,7 +676,7 @@ echo $query->toSQL();
 
 | Function | Description |
 |----------|-------------|
-| `func_arg(string $type)` | Create a function argument |
+| `func_arg(ColumnType $type)` | Create a function argument |
 | `create()->function(string $name)` | Create a new function |
 | `create()->procedure(string $name)` | Create a new procedure |
 | `alter()->function(string $name)` | Alter an existing function |
diff --git a/documentation/components/libs/postgresql/index-query-builder.md b/documentation/components/libs/postgresql/index-query-builder.md
index f88bd718c4..b45a25d1b6 100644
--- a/documentation/components/libs/postgresql/index-query-builder.md
+++ b/documentation/components/libs/postgresql/index-query-builder.md
@@ -20,7 +20,7 @@ $query = create()->index('idx_users_email')
     ->on('users')
     ->columns('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_email ON users (email)
 ```
 
@@ -36,7 +36,7 @@ $query = create()->index('idx_users_email')
     ->on('users')
     ->columns('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE UNIQUE INDEX idx_users_email ON users (email)
 ```
 
@@ -52,7 +52,7 @@ $query = create()->index('idx_users_email')
     ->on('users')
     ->columns('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX IF NOT EXISTS idx_users_email ON users (email)
 ```
 
@@ -70,7 +70,7 @@ $query = create()->index('idx_users_email')
     ->on('users')
     ->columns('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX CONCURRENTLY idx_users_email ON users (email)
 ```
 
@@ -88,7 +88,7 @@ $query = create()->index('idx_users_email')
     ->on('users')
     ->columns('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE UNIQUE INDEX CONCURRENTLY IF NOT EXISTS idx_users_email ON users (email)
 ```
 
@@ -103,7 +103,7 @@ $query = create()->index('idx_users_email')
     ->on('users', 'public')
     ->columns('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_email ON public.users (email)
 ```
 
@@ -164,7 +164,7 @@ $query = create()->index('idx_users_name_email')
     ->on('users')
     ->columns('name', 'email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_name_email ON users (name, email)
 ```
 
@@ -182,7 +182,7 @@ $query = create()->index('idx_users_created_at')
     ->on('users')
     ->columns(index_col('created_at')->desc());
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_created_at ON users (created_at DESC)
 
 // With NULLS ordering
@@ -190,14 +190,14 @@ $query = create()->index('idx_users_created_at')
     ->on('users')
     ->columns(index_col('created_at')->desc()->nullsFirst());
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_created_at ON users (created_at DESC NULLS FIRST)
 
 $query = create()->index('idx_users_created_at')
     ->on('users')
     ->columns(index_col('created_at')->nullsLast());
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_created_at ON users (created_at NULLS LAST)
 ```
 
@@ -214,7 +214,7 @@ $query = create()->index('idx_users_name_pattern')
     ->on('users')
     ->columns(index_col('name')->opclass('text_pattern_ops'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_name_pattern ON users (name text_pattern_ops)
 ```
 
@@ -246,7 +246,7 @@ $query = create()->index('idx_users_lower_email')
     ->on('users')
     ->columns(index_expr(new RawExpression('lower(email)')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_lower_email ON users ((lower(email)))
 ```
 
@@ -264,7 +264,7 @@ $query = create()->index('idx_users_email')
     ->columns('email')
     ->include('name', 'created_at');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_email ON users (email) INCLUDE (name, created_at)
 ```
 
@@ -282,7 +282,7 @@ $query = create()->index('idx_users_active_email')
     ->columns('email')
     ->where(eq(col('active'), literal(true)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_active_email ON users (email) WHERE active = true
 ```
 
@@ -300,7 +300,7 @@ $query = create()->index('idx_users_email')
     ->columns('email')
     ->tablespace('fast_storage');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_email ON users (email) TABLESPACE fast_storage
 ```
 
@@ -319,7 +319,7 @@ $query = create()->index('idx_users_email')
     ->columns('email')
     ->nullsNotDistinct();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE UNIQUE INDEX idx_users_email ON users (email) NULLS NOT DISTINCT
 ```
 
@@ -336,7 +336,7 @@ $query = create()->index('idx_users_email')
     ->onOnly('users')
     ->columns('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE INDEX idx_users_email ON ONLY users (email)
 ```
 
@@ -351,7 +351,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->index('idx_users_email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP INDEX idx_users_email
 ```
 
@@ -365,7 +365,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->index('idx_users_email')
     ->ifExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP INDEX IF EXISTS idx_users_email
 ```
 
@@ -381,7 +381,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->index('idx_users_email')
     ->concurrently();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP INDEX CONCURRENTLY idx_users_email
 ```
 
@@ -397,7 +397,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->index('idx_users_email')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP INDEX idx_users_email CASCADE
 ```
 
@@ -412,7 +412,7 @@ $query = drop()->index('idx_users_email')
     ->ifExists()
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP INDEX IF EXISTS idx_users_email CASCADE
 ```
 
@@ -425,7 +425,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->index('idx_users_email', 'idx_users_name', 'idx_orders_date');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP INDEX idx_users_email, idx_users_name, idx_orders_date
 ```
 
@@ -438,7 +438,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->index('public.idx_users_email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP INDEX public.idx_users_email
 ```
 
@@ -453,7 +453,7 @@ use function Flow\PostgreSql\DSL\reindex_index;
 
 $query = reindex_index('idx_users_email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // REINDEX INDEX idx_users_email
 ```
 
@@ -468,7 +468,7 @@ use function Flow\PostgreSql\DSL\reindex_table;
 
 $query = reindex_table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // REINDEX TABLE users
 ```
 
@@ -483,7 +483,7 @@ use function Flow\PostgreSql\DSL\reindex_schema;
 
 $query = reindex_schema('public');
 
-echo $query->toSQL();
+echo $query->toSql();
 // REINDEX SCHEMA public
 ```
 
@@ -498,7 +498,7 @@ use function Flow\PostgreSql\DSL\reindex_database;
 
 $query = reindex_database('mydb');
 
-echo $query->toSQL();
+echo $query->toSql();
 // REINDEX DATABASE mydb
 ```
 
@@ -514,7 +514,7 @@ use function Flow\PostgreSql\DSL\reindex_index;
 $query = reindex_index('idx_users_email')
     ->concurrently();
 
-echo $query->toSQL();
+echo $query->toSql();
 // REINDEX (CONCURRENTLY) INDEX idx_users_email
 ```
 
@@ -530,7 +530,7 @@ use function Flow\PostgreSql\DSL\reindex_table;
 $query = reindex_table('users')
     ->verbose();
 
-echo $query->toSQL();
+echo $query->toSql();
 // REINDEX (VERBOSE) TABLE users
 ```
 
@@ -546,7 +546,7 @@ use function Flow\PostgreSql\DSL\reindex_index;
 $query = reindex_index('idx_users_email')
     ->tablespace('fast_storage');
 
-echo $query->toSQL();
+echo $query->toSql();
 // REINDEX (TABLESPACE fast_storage) INDEX idx_users_email
 ```
 
@@ -559,7 +559,7 @@ use function Flow\PostgreSql\DSL\reindex_table;
 
 $query = reindex_table('public.users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // REINDEX TABLE public.users
 ```
 
@@ -575,7 +575,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->index('idx_old')
     ->renameTo('idx_new');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER INDEX idx_old RENAME TO idx_new
 ```
 
@@ -590,7 +590,7 @@ $query = alter()->index('idx_old')
     ->ifExists()
     ->renameTo('idx_new');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER INDEX IF EXISTS idx_old RENAME TO idx_new
 ```
 
@@ -604,7 +604,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->index('idx_old', 'public')
     ->renameTo('idx_new');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER INDEX public.idx_old RENAME TO idx_new
 ```
 
@@ -620,7 +620,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->index('idx_users_email')
     ->setTablespace('fast_storage');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER INDEX idx_users_email SET TABLESPACE fast_storage
 ```
 
@@ -635,7 +635,7 @@ $query = alter()->index('idx_users_email')
     ->ifExists()
     ->setTablespace('fast_storage');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER INDEX IF EXISTS idx_users_email SET TABLESPACE fast_storage
 ```
 
diff --git a/documentation/components/libs/postgresql/insert-query-builder.md b/documentation/components/libs/postgresql/insert-query-builder.md
index 9a9ddb7de7..c615f18f76 100644
--- a/documentation/components/libs/postgresql/insert-query-builder.md
+++ b/documentation/components/libs/postgresql/insert-query-builder.md
@@ -18,7 +18,7 @@ $query = insert()
     ->columns('name', 'email')
     ->values(literal('John'), literal('john@example.com'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (name, email) VALUES ('John', 'john@example.com')
 ```
 
@@ -36,10 +36,43 @@ $query = insert()
     ->columns('name', 'email')
     ->values(param(1), param(2));
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (name, email) VALUES ($1, $2)
 ```
 
+For queries with many columns, use `parameters()` to generate all positional parameters at once:
+
+```php
+<?php
+
+use function Flow\PostgreSql\DSL\{insert, parameters};
+
+$query = insert()
+    ->into('users')
+    ->columns('id', 'name', 'email', 'created_at', 'updated_at')
+    ->values(...parameters(5));
+
+echo $query->toSql();
+// INSERT INTO users (id, name, email, created_at, updated_at) VALUES ($1, $2, $3, $4, $5)
+```
+
+The `parameters()` function accepts an optional `startAt` argument for multi-row inserts:
+
+```php
+<?php
+
+use function Flow\PostgreSql\DSL\{insert, parameters};
+
+$query = insert()
+    ->into('users')
+    ->columns('name', 'email')
+    ->values(...parameters(2))
+    ->values(...parameters(2, startAt: 3));
+
+echo $query->toSql();
+// INSERT INTO users (name, email) VALUES ($1, $2), ($3, $4)
+```
+
 ## Multi-Row Insert
 
 ```php
@@ -53,7 +86,7 @@ $query = insert()
     ->values(literal('John'), literal('john@example.com'))
     ->values(literal('Jane'), literal('jane@example.com'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (name, email) VALUES ('John', 'john@example.com'), ('Jane', 'jane@example.com')
 ```
 
@@ -68,7 +101,7 @@ $query = insert()
     ->into('users')
     ->defaultValues();
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users DEFAULT VALUES
 ```
 
@@ -88,7 +121,7 @@ $query = insert()
     ->columns('name', 'email')
     ->select($selectQuery);
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (name, email) SELECT name, email FROM archived_users
 ```
 
@@ -108,7 +141,7 @@ $query = insert()
     ->values(literal('John'), literal('john@example.com'))
     ->onConflictDoNothing();
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (name, email) VALUES ('John', 'john@example.com') ON CONFLICT DO NOTHING
 ```
 
@@ -125,7 +158,7 @@ $query = insert()
     ->values(literal('John'), literal('john@example.com'))
     ->onConflictDoNothing(conflict_columns(['email']));
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (name, email) VALUES ('John', 'john@example.com') ON CONFLICT (email) DO NOTHING
 ```
 
@@ -142,7 +175,7 @@ $query = insert()
     ->values(literal('John'), literal('john@example.com'))
     ->onConflictDoNothing(conflict_constraint('users_pkey'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (name, email) VALUES ('John', 'john@example.com') ON CONFLICT ON CONSTRAINT users_pkey DO NOTHING
 ```
 
@@ -162,7 +195,7 @@ $query = insert()
         ['name' => literal('Updated John')]
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (email, name) VALUES ('john@example.com', 'John') ON CONFLICT (email) DO UPDATE SET name = 'Updated John'
 ```
 
@@ -184,7 +217,7 @@ $query = insert()
         ['name' => col('excluded.name')]
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (email, name) VALUES ($1, $2) ON CONFLICT (email) DO UPDATE SET name = excluded.name
 ```
 
@@ -207,7 +240,7 @@ $query = insert()
     )
     ->where(eq(col('users.active'), literal(true)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (email, name, active) VALUES ('john@example.com', 'John', true) ON CONFLICT (email) DO UPDATE SET name = 'Updated John' WHERE users.active = true
 ```
 
@@ -225,7 +258,7 @@ $query = insert()
     ->values(literal('John'))
     ->returning(col('id'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (name) VALUES ('John') RETURNING id
 
 // Return all columns
@@ -235,7 +268,7 @@ $query = insert()
     ->values(literal('John'))
     ->returningAll();
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO users (name) VALUES ('John') RETURNING *
 ```
 
@@ -251,7 +284,7 @@ $query = insert()
     ->columns('name')
     ->values(literal('John'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // INSERT INTO public.users (name) VALUES ('John')
 ```
 
diff --git a/documentation/components/libs/postgresql/merge-query-builder.md b/documentation/components/libs/postgresql/merge-query-builder.md
index 3d985f51b4..d32ab75876 100644
--- a/documentation/components/libs/postgresql/merge-query-builder.md
+++ b/documentation/components/libs/postgresql/merge-query-builder.md
@@ -22,7 +22,7 @@ $query = merge('target_table', 't')
         'value' => col('s.value'),
     ]);
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO target_table t USING source_table s ON t.id = s.id WHEN MATCHED THEN UPDATE SET name = s.name, value = s.value
 ```
 
@@ -39,7 +39,7 @@ $query = merge('target_table', 't')
     ->whenMatched()
     ->thenDelete();
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO target_table t USING source_table s ON t.id = s.id WHEN MATCHED THEN DELETE
 ```
 
@@ -59,7 +59,7 @@ $query = merge('customers')
         [col('nc.id'), col('nc.name'), col('nc.email')]
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO customers USING new_customers nc ON customers.id = nc.id WHEN NOT MATCHED THEN INSERT (id, name, email) VALUES (nc.id, nc.name, nc.email)
 ```
 
@@ -82,7 +82,7 @@ $query = merge('users')
         'status' => literal('active'),
     ]);
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO users USING new_users n ON users.id = n.id WHEN NOT MATCHED THEN INSERT (id, name, status) VALUES (n.id, n.name, 'active')
 ```
 
@@ -109,7 +109,7 @@ $query = merge('inventory', 'i')
         [col('u.product_id'), col('u.quantity')]
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO inventory i USING updates u ON i.product_id = u.product_id WHEN MATCHED THEN UPDATE SET quantity = u.quantity, updated_at = u.updated_at WHEN NOT MATCHED THEN INSERT (product_id, quantity) VALUES (u.product_id, u.quantity)
 ```
 
@@ -130,7 +130,7 @@ $query = merge('products', 'p')
         'price' => col('pu.price'),
     ]);
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO products p USING price_updates pu ON p.id = pu.product_id WHEN MATCHED AND pu.price > 0 THEN UPDATE SET price = pu.price
 ```
 
@@ -147,7 +147,7 @@ $query = merge('products')
     ->whenMatched()
     ->thenDoNothing();
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO products USING updates u ON products.id = u.id WHEN MATCHED THEN DO NOTHING
 ```
 
@@ -173,7 +173,7 @@ $query = merge('users')
         'email' => col('src.email'),
     ]);
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO users USING (SELECT id, name, email FROM staged_data) src ON users.id = src.id WHEN MATCHED THEN UPDATE SET name = src.name, email = src.email
 ```
 
@@ -219,7 +219,7 @@ $query = merge('accounts')
         'balance' => param(1),
     ]);
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO accounts USING transactions t ON accounts.id = t.account_id WHEN MATCHED THEN UPDATE SET balance = $1
 ```
 
@@ -238,7 +238,7 @@ $query = merge('target', 't')
     ->whenNotMatchedBySource()
     ->thenDelete();
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO target t USING source s ON t.id = s.id WHEN NOT MATCHED BY SOURCE THEN DELETE
 ```
 
@@ -255,7 +255,7 @@ $query = merge('myschema.users', 'u')
     ->whenMatched()
     ->thenDoNothing();
 
-echo $query->toSQL();
+echo $query->toSql();
 // MERGE INTO myschema.users u USING public.updates s ON u.id = s.id WHEN MATCHED THEN DO NOTHING
 ```
 
diff --git a/documentation/components/libs/postgresql/schema-query-builder.md b/documentation/components/libs/postgresql/schema-query-builder.md
index 252c520d63..9ab4e1cb8e 100644
--- a/documentation/components/libs/postgresql/schema-query-builder.md
+++ b/documentation/components/libs/postgresql/schema-query-builder.md
@@ -18,21 +18,21 @@ use function Flow\PostgreSql\DSL\create;
 // Simple schema creation
 $query = create()->schema('my_schema');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SCHEMA my_schema
 
 // With IF NOT EXISTS
 $query = create()->schema('my_schema')
     ->ifNotExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SCHEMA IF NOT EXISTS my_schema
 
 // With authorization
 $query = create()->schema('my_schema')
     ->authorization('admin_user');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SCHEMA my_schema AUTHORIZATION admin_user
 
 // Combined options
@@ -40,7 +40,7 @@ $query = create()->schema('my_schema')
     ->ifNotExists()
     ->authorization('admin_user');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SCHEMA IF NOT EXISTS my_schema AUTHORIZATION admin_user
 ```
 
@@ -65,7 +65,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->schema('old_schema')
     ->renameTo('new_schema');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SCHEMA old_schema RENAME TO new_schema
 ```
 
@@ -79,7 +79,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->schema('my_schema')
     ->ownerTo('new_owner');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SCHEMA my_schema OWNER TO new_owner
 ```
 
@@ -95,21 +95,21 @@ use function Flow\PostgreSql\DSL\drop;
 // Simple drop
 $query = drop()->schema('my_schema');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SCHEMA my_schema
 
 // With IF EXISTS
 $query = drop()->schema('my_schema')
     ->ifExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SCHEMA IF EXISTS my_schema
 
 // With CASCADE
 $query = drop()->schema('my_schema')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SCHEMA my_schema CASCADE
 
 // Combined options
@@ -117,14 +117,14 @@ $query = drop()->schema('my_schema')
     ->ifExists()
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SCHEMA IF EXISTS my_schema CASCADE
 
 // Drop multiple schemas
 $query = drop()->schema('schema1', 'schema2', 'schema3')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SCHEMA schema1, schema2, schema3 CASCADE
 ```
 
diff --git a/documentation/components/libs/postgresql/select-query-builder.md b/documentation/components/libs/postgresql/select-query-builder.md
index 097674fdf5..b7d903cfe7 100644
--- a/documentation/components/libs/postgresql/select-query-builder.md
+++ b/documentation/components/libs/postgresql/select-query-builder.md
@@ -17,14 +17,14 @@ use function Flow\PostgreSql\DSL\{select, col, star, table};
 $query = select(col('id'), col('name'))
     ->from(table('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT id, name FROM users
 
 // Select all columns
 $query = select(star())
     ->from(table('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users
 ```
 
@@ -35,9 +35,9 @@ echo $query->toSQL();
 
 use function Flow\PostgreSql\DSL\{
     select, star, table, col,
-    eq, gt, lt, gte, lte, neq, between, is_in, like, is_null,
+    eq, gt, lt, ge, le, ne, between, in_, like, is_null,
     literal, literal,
-    cond_and, cond_or, cond_not
+    and_, or_, not_
 };
 
 // Simple condition
@@ -45,37 +45,37 @@ $query = select(star())
     ->from(table('users'))
     ->where(eq(col('active'), literal(true)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE active = true
 
 // Multiple conditions with AND
 $query = select(star())
     ->from(table('products'))
     ->where(
-        cond_and(
+        and_(
             gt(col('price'), literal(10)),
             lt(col('price'), literal(100)),
             eq(col('in_stock'), literal(true))
         )
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE price > 10 AND price < 100 AND in_stock = true
 
 // Complex conditions with AND/OR
 $query = select(star())
     ->from(table('users'))
     ->where(
-        cond_and(
+        and_(
             eq(col('status'), literal('active')),
-            cond_or(
-                gte(col('age'), literal(18)),
+            or_(
+                ge(col('age'), literal(18)),
                 eq(col('guardian_approved'), literal(true))
             )
         )
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE status = 'active' AND (age >= 18 OR guardian_approved = true)
 
 // BETWEEN condition
@@ -83,19 +83,19 @@ $query = select(star())
     ->from(table('products'))
     ->where(between(col('price'), literal(10), literal(100)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE price BETWEEN 10 AND 100
 
 // IN condition
 $query = select(star())
     ->from(table('users'))
-    ->where(is_in(col('status'), [
+    ->where(in_(col('status'), [
         literal('active'),
         literal('pending'),
         literal('verified')
     ]));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE status IN ('active', 'pending', 'verified')
 
 // LIKE condition
@@ -103,7 +103,7 @@ $query = select(star())
     ->from(table('users'))
     ->where(like(col('email'), literal('%@example.com')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE email LIKE '%@example.com'
 ```
 
@@ -126,7 +126,7 @@ $query = select(col('u.name'), col('o.total'))
         eq(col('u.id'), col('o.user_id'))
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT u.name, o.total FROM users u JOIN orders o ON u.id = o.user_id
 
 // LEFT JOIN
@@ -137,7 +137,7 @@ $query = select(col('u.name'), col('o.total'))
         eq(col('u.id'), col('o.user_id'))
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT u.name, o.total FROM users u LEFT JOIN orders o ON u.id = o.user_id
 
 // RIGHT JOIN
@@ -148,7 +148,7 @@ $query = select(star())
         eq(col('o.user_id'), col('u.id'))
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM orders o RIGHT JOIN users u ON o.user_id = u.id
 
 // FULL JOIN
@@ -159,7 +159,7 @@ $query = select(star())
         eq(col('a.key'), col('b.key'))
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM table_a a FULL JOIN table_b b ON a.key = b.key
 
 // CROSS JOIN
@@ -167,7 +167,7 @@ $query = select(star())
     ->from(table('colors'))
     ->crossJoin(table('sizes'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM colors CROSS JOIN sizes
 ```
 
@@ -187,7 +187,7 @@ $query = select(star())
     ->from(table('users'))
     ->orderBy(asc(col('name')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users ORDER BY name ASC
 
 // Multiple columns
@@ -198,7 +198,7 @@ $query = select(star())
         desc(col('first_name'))
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users ORDER BY last_name ASC, first_name DESC
 
 // NULLS FIRST / NULLS LAST
@@ -209,7 +209,7 @@ $query = select(star())
         order_by(col('name'), SortDirection::DESC, NullsPosition::LAST)
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products ORDER BY price ASC NULLS FIRST, name DESC NULLS LAST
 ```
 
@@ -226,7 +226,7 @@ $query = select(star())
     ->limit(10)
     ->offset(20);
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users ORDER BY id ASC LIMIT 10 OFFSET 20
 ```
 
@@ -253,7 +253,7 @@ $query = with(
     ->select(star())
     ->from(table('active_users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // WITH active_users AS (SELECT id, name FROM users WHERE active = true) SELECT * FROM active_users
 
 // Multiple CTEs
@@ -264,7 +264,7 @@ $query = with(
     ->select(star())
     ->from(table('users_cte'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // WITH users_cte AS (SELECT id, name FROM users), orders_cte AS (SELECT id, user_id FROM orders) SELECT * FROM users_cte
 
 // Recursive CTE
@@ -273,7 +273,7 @@ $query = with(cte('tree', $recursiveQuery))
     ->select(star())
     ->from(table('tree'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // WITH RECURSIVE tree AS (...) SELECT * FROM tree
 
 // Materialized CTE
@@ -290,7 +290,7 @@ $query = with(
     ->select(star())
     ->from(table('active_users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // WITH active_users AS MATERIALIZED (SELECT id, name FROM users WHERE active = true) SELECT * FROM active_users
 ```
 
@@ -314,7 +314,7 @@ $query = select(col('u.name'), col('o.total'))
         eq(col('u.id'), col('o.user_id'))
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT u.name, o.total FROM users u LEFT JOIN (SELECT user_id, sum(amount) AS total FROM orders GROUP BY user_id) o ON u.id = o.user_id
 ```
 
@@ -324,7 +324,7 @@ echo $query->toSQL();
 <?php
 
 use function Flow\PostgreSql\DSL\{
-    select, star, table, col, derived, lateral, desc, eq, raw_cond
+    select, star, table, col, derived, lateral, desc, eq, is_true, literal
 };
 
 $lateralQuery = select(star())
@@ -338,10 +338,10 @@ $query = select()
     ->from(table('users')->as('u'))
     ->leftJoin(
         lateral(derived($lateralQuery, 'recent')),
-        raw_cond('true')
+        is_true(literal(true))
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT u.name, recent.id FROM users u LEFT JOIN LATERAL (SELECT * FROM orders WHERE orders.user_id = u.id ORDER BY created_at DESC LIMIT 3) recent ON true
 ```
 
@@ -353,7 +353,7 @@ The query builder provides native support for PostgreSQL JSONB operators:
 <?php
 
 use function Flow\PostgreSql\DSL\{
-    select, star, table, col, literal, raw_expr,
+    select, star, table, col, literal, array_expr,
     json_contains, json_contained_by, json_get, json_get_text,
     json_path, json_path_text, json_exists, json_exists_any, json_exists_all
 };
@@ -363,7 +363,7 @@ $query = select(star())
     ->from(table('products'))
     ->where(json_contains(col('metadata'), literal('{"category": "electronics"}')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE metadata @> '{"category": "electronics"}'
 
 // JSONB is contained by (<@)
@@ -371,35 +371,35 @@ $query = select(star())
     ->from(table('products'))
     ->where(json_contained_by(col('metadata'), literal('{"category": "electronics", "price": 100}')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE metadata <@ '{"category": "electronics", "price": 100}'
 
 // JSON field access (->) - returns JSON
 $query = select(json_get(col('metadata'), literal('category'))->as('category'))
     ->from(table('products'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT metadata -> 'category' AS category FROM products
 
 // JSON field access (->>) - returns text
 $query = select(json_get_text(col('metadata'), literal('name'))->as('product_name'))
     ->from(table('products'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT metadata ->> 'name' AS product_name FROM products
 
 // JSON path access (#>) - returns JSON
 $query = select(json_path(col('metadata'), literal('{category,name}'))->as('nested'))
     ->from(table('products'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT metadata #> '{category,name}' AS nested FROM products
 
 // JSON path access (#>>) - returns text
 $query = select(json_path_text(col('metadata'), literal('{category,name}'))->as('nested_text'))
     ->from(table('products'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT metadata #>> '{category,name}' AS nested_text FROM products
 
 // Key exists (?)
@@ -407,23 +407,23 @@ $query = select(star())
     ->from(table('products'))
     ->where(json_exists(col('metadata'), literal('category')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE metadata ? 'category'
 
 // Any key exists (?|)
 $query = select(star())
     ->from(table('products'))
-    ->where(json_exists_any(col('metadata'), raw_expr("array['category', 'name']")));
+    ->where(json_exists_any(col('metadata'), array_expr([literal('category'), literal('name')])));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE metadata ?| array['category', 'name']
 
 // All keys exist (?&)
 $query = select(star())
     ->from(table('products'))
-    ->where(json_exists_all(col('metadata'), raw_expr("array['category', 'name']")));
+    ->where(json_exists_all(col('metadata'), array_expr([literal('category'), literal('name')])));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE metadata ?& array['category', 'name']
 ```
 
@@ -435,32 +435,32 @@ PostgreSQL array operators are also supported:
 <?php
 
 use function Flow\PostgreSql\DSL\{
-    select, star, table, col, raw_expr,
+    select, star, table, col, literal, array_expr,
     array_contains, array_contained_by, array_overlap
 };
 
 // Array contains (@>)
 $query = select(star())
     ->from(table('products'))
-    ->where(array_contains(col('tags'), raw_expr("ARRAY['sale']")));
+    ->where(array_contains(col('tags'), array_expr([literal('sale')])));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE tags @> ARRAY['sale']
 
 // Array is contained by (<@)
 $query = select(star())
     ->from(table('products'))
-    ->where(array_contained_by(col('tags'), raw_expr("ARRAY['sale', 'featured', 'new']")));
+    ->where(array_contained_by(col('tags'), array_expr([literal('sale'), literal('featured'), literal('new')])));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE tags <@ ARRAY['sale', 'featured', 'new']
 
 // Array overlap (&&)
 $query = select(star())
     ->from(table('products'))
-    ->where(array_overlap(col('tags'), raw_expr("ARRAY['sale', 'featured']")));
+    ->where(array_overlap(col('tags'), array_expr([literal('sale'), literal('featured')])));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM products WHERE tags && ARRAY['sale', 'featured']
 ```
 
@@ -481,7 +481,7 @@ $query = select(star())
     ->from(table('users'))
     ->where(regex_match(col('email'), literal('.*@gmail\\.com')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE email ~ '.*@gmail\.com'
 
 // Case-insensitive regex match (~*)
@@ -489,7 +489,7 @@ $query = select(star())
     ->from(table('users'))
     ->where(regex_imatch(col('email'), literal('.*@gmail\\.com')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE email ~* '.*@gmail\.com'
 
 // Does not match (!~)
@@ -497,7 +497,7 @@ $query = select(star())
     ->from(table('users'))
     ->where(not_regex_match(col('email'), literal('.*@spam\\.com')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE email !~ '.*@spam\.com'
 
 // Does not match case-insensitive (!~*)
@@ -505,10 +505,80 @@ $query = select(star())
     ->from(table('users'))
     ->where(not_regex_imatch(col('email'), literal('.*@spam\\.com')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE email !~* '.*@spam\.com'
 ```
 
+## SIMILAR TO
+
+SQL-standard pattern matching (like LIKE but supports full regex character classes):
+
+```php
+<?php
+
+use function Flow\PostgreSql\DSL\{select, star, table, col, literal, similar_to};
+
+$query = select(star())
+    ->from(table('users'))
+    ->where(similar_to(col('email'), literal('%@(gmail|yahoo)\\.com')));
+
+echo $query->toSql();
+// SELECT * FROM users WHERE email SIMILAR TO '%@(gmail|yahoo)\.com'
+```
+
+## NOT LIKE
+
+```php
+<?php
+
+use function Flow\PostgreSql\DSL\{select, star, table, col, literal, not_like};
+
+$query = select(star())
+    ->from(table('users'))
+    ->where(not_like(col('name'), literal('pg_%')));
+
+echo $query->toSql();
+// SELECT * FROM users WHERE name NOT LIKE 'pg_%'
+```
+
+## IS DISTINCT FROM
+
+NULL-safe comparison (treats NULL as a known value):
+
+```php
+<?php
+
+use function Flow\PostgreSql\DSL\{select, star, table, col, literal, distinct_from};
+
+$query = select(star())
+    ->from(table('users'))
+    ->where(distinct_from(col('email'), literal('test@example.com')));
+
+echo $query->toSql();
+// SELECT * FROM users WHERE email IS DISTINCT FROM 'test@example.com'
+```
+
+## ALL Condition
+
+Compare against all values from a subquery or array:
+
+```php
+<?php
+
+use function Flow\PostgreSql\DSL\{
+    select, star, table, col,
+    all_
+};
+use Flow\PostgreSql\QueryBuilder\Condition\ComparisonOperator;
+
+$query = select(star())
+    ->from(table('products'))
+    ->where(all_(col('price'), ComparisonOperator::GT, col('thresholds')));
+
+echo $query->toSql();
+// SELECT * FROM products WHERE price > ALL(thresholds)
+```
+
 ## Full-Text Search
 
 PostgreSQL full-text search operator:
@@ -517,14 +587,14 @@ PostgreSQL full-text search operator:
 <?php
 
 use function Flow\PostgreSql\DSL\{
-    select, star, table, col, raw_expr, text_search_match
+    select, star, table, col, literal, func, text_search_match
 };
 
 $query = select(star())
     ->from(table('documents'))
-    ->where(text_search_match(col('content'), raw_expr("to_tsquery('english', 'hello & world')")));
+    ->where(text_search_match(col('content'), func('to_tsquery', [literal('english'), literal('hello & world')])));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM documents WHERE content @@ to_tsquery('english', 'hello & world')
 ```
 
@@ -550,7 +620,7 @@ $query = select(
     ->from(table('orders'))
     ->groupBy(col('category'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT category, count(*), sum(amount), avg(price), min(created_at), max(updated_at) FROM orders GROUP BY category
 
 // GROUP BY with HAVING
@@ -559,14 +629,14 @@ $query = select(col('category'), agg_count()->as('cnt'))
     ->groupBy(col('category'))
     ->having(gt(agg_count(), literal(5)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT category, count(*) AS cnt FROM products GROUP BY category HAVING count(*) > 5
 
 // COUNT DISTINCT
 $query = select(agg_count(col('user_id'), true)->as('unique_users'))
     ->from(table('orders'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT count(DISTINCT user_id) AS unique_users FROM orders
 ```
 
@@ -586,25 +656,25 @@ $query2 = select(col('name'))
 // UNION
 $query = $query1->union($query2);
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT name FROM users UNION SELECT name FROM admins
 
 // UNION ALL
 $query = $query1->unionAll($query2);
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT name FROM users UNION ALL SELECT name FROM admins
 
 // INTERSECT
 $query = $query1->intersect($query2);
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT name FROM users INTERSECT SELECT name FROM admins
 
 // EXCEPT
 $query = $query1->except($query2);
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT name FROM users EXCEPT SELECT name FROM admins
 ```
 
@@ -629,7 +699,7 @@ $query = select(
     )
     ->from(table('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT name, (SELECT count(*) FROM orders WHERE orders.user_id = users.id) AS order_count FROM users
 
 // EXISTS subquery
@@ -641,7 +711,7 @@ $query = select(star())
     ->from(table('users'))
     ->where(exists($subquery));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE EXISTS (SELECT 1 FROM orders WHERE orders.user_id = users.id)
 ```
 
@@ -658,7 +728,7 @@ $query = select(star())
     ->from(table('users'))
     ->where(eq(col('id'), param(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM users WHERE id = $1
 ```
 
@@ -674,7 +744,7 @@ $query = select(star())
     ->where(eq(col('id'), literal(1)))
     ->forUpdate();
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM accounts WHERE id = 1 FOR UPDATE
 
 $query = select(star())
@@ -682,7 +752,7 @@ $query = select(star())
     ->where(eq(col('id'), literal(1)))
     ->forShare();
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT * FROM accounts WHERE id = 1 FOR SHARE
 ```
 
@@ -699,7 +769,7 @@ $query = select(
     )
     ->from(table('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT first_name AS fname, last_name AS lname FROM users
 ```
 
@@ -715,7 +785,7 @@ $query = select()
     ->selectDistinct(col('city'))
     ->from(table('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT DISTINCT city FROM users
 
 // DISTINCT ON
@@ -728,7 +798,7 @@ $query = select()
     ->from(table('employees'))
     ->orderBy(asc(col('department')), desc(col('salary')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // SELECT DISTINCT ON (department) name, salary FROM employees ORDER BY department ASC, salary DESC
 ```
 
diff --git a/documentation/components/libs/postgresql/sequence-query-builder.md b/documentation/components/libs/postgresql/sequence-query-builder.md
index b8ab96e563..394a483bd2 100644
--- a/documentation/components/libs/postgresql/sequence-query-builder.md
+++ b/documentation/components/libs/postgresql/sequence-query-builder.md
@@ -18,7 +18,7 @@ use function Flow\PostgreSql\DSL\create;
 
 $query = create()->sequence('user_id_seq');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq
 ```
 
@@ -31,7 +31,7 @@ use function Flow\PostgreSql\DSL\create;
 
 $query = create()->sequence('user_id_seq', 'public');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE public.user_id_seq
 ```
 
@@ -44,7 +44,7 @@ use function Flow\PostgreSql\DSL\create;
 
 $query = create()->sequence('user_id_seq')->ifNotExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE IF NOT EXISTS user_id_seq
 ```
 
@@ -59,7 +59,7 @@ use function Flow\PostgreSql\DSL\create;
 
 $query = create()->sequence('temp_seq')->temporary();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TEMPORARY SEQUENCE temp_seq
 ```
 
@@ -74,7 +74,7 @@ use function Flow\PostgreSql\DSL\create;
 
 $query = create()->sequence('fast_seq')->unlogged();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE UNLOGGED SEQUENCE fast_seq
 ```
 
@@ -90,7 +90,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->sequence('user_id_seq')
     ->startWith(100);
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq START 100
 ```
 
@@ -106,7 +106,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->sequence('user_id_seq')
     ->incrementBy(10);
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq INCREMENT 10
 ```
 
@@ -123,14 +123,14 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->sequence('user_id_seq')
     ->minValue(1);
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq MINVALUE 1
 
 // Remove minimum bound
 $query = create()->sequence('user_id_seq')
     ->noMinValue();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq NO MINVALUE
 ```
 
@@ -147,14 +147,14 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->sequence('user_id_seq')
     ->maxValue(9999999);
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq MAXVALUE 9999999
 
 // Remove maximum bound
 $query = create()->sequence('user_id_seq')
     ->noMaxValue();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq NO MAXVALUE
 ```
 
@@ -170,7 +170,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->sequence('user_id_seq')
     ->cache(20);
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq CACHE 20
 ```
 
@@ -187,14 +187,14 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->sequence('user_id_seq')
     ->cycle();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq CYCLE
 
 // Disable cycling (explicit)
 $query = create()->sequence('user_id_seq')
     ->noCycle();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq NO CYCLE
 ```
 
@@ -210,7 +210,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->sequence('user_id_seq')
     ->asType('bigint');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq AS bigint
 ```
 
@@ -227,21 +227,21 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->sequence('user_id_seq')
     ->ownedBy('users', 'id');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq OWNED BY users.id
 
 // With schema-qualified table
 $query = create()->sequence('user_id_seq')
     ->ownedBy('public.users', 'id');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq OWNED BY public.users.id
 
 // Remove ownership
 $query = create()->sequence('user_id_seq')
     ->ownedByNone();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq OWNED BY "none"
 ```
 
@@ -261,7 +261,7 @@ $query = create()->sequence('user_id_seq')
     ->cache(1)
     ->noCycle();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE SEQUENCE user_id_seq AS bigint START 1 INCREMENT 1 MINVALUE 1 MAXVALUE 1000000 CACHE 1 NO CYCLE
 ```
 
@@ -280,14 +280,14 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->sequence('user_id_seq')
     ->restart();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE user_id_seq RESTART
 
 // Restart at specific value
 $query = alter()->sequence('user_id_seq')
     ->restartWith(1000);
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE user_id_seq RESTART 1000
 ```
 
@@ -304,7 +304,7 @@ $query = alter()->sequence('user_id_seq')
     ->ifExists()
     ->incrementBy(10);
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE IF EXISTS user_id_seq INCREMENT 10
 ```
 
@@ -318,7 +318,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->sequence('user_id_seq', 'public')
     ->incrementBy(10);
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE public.user_id_seq INCREMENT 10
 ```
 
@@ -337,7 +337,7 @@ $query = alter()->sequence('user_id_seq')
     ->maxValue(1000000)
     ->cache(5);
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE user_id_seq INCREMENT 10 MINVALUE 1 MAXVALUE 1000000 CACHE 5
 ```
 
@@ -353,7 +353,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->sequence('old_seq')
     ->renameTo('new_seq');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE old_seq RENAME TO new_seq
 ```
 
@@ -369,7 +369,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->sequence('user_id_seq')
     ->setSchema('new_schema');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE user_id_seq SET SCHEMA new_schema
 ```
 
@@ -385,7 +385,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->sequence('user_id_seq')
     ->ownerTo('new_owner');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE user_id_seq OWNER TO new_owner
 ```
 
@@ -402,14 +402,14 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->sequence('user_id_seq')
     ->setLogged();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE user_id_seq SET LOGGED
 
 // Make the sequence unlogged
 $query = alter()->sequence('user_id_seq')
     ->setUnlogged();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER SEQUENCE user_id_seq SET UNLOGGED
 ```
 
@@ -424,7 +424,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->sequence('user_id_seq');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SEQUENCE user_id_seq
 ```
 
@@ -437,7 +437,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->sequence('public.user_id_seq');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SEQUENCE public.user_id_seq
 ```
 
@@ -450,7 +450,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->sequence('user_id_seq')->ifExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SEQUENCE IF EXISTS user_id_seq
 ```
 
@@ -463,7 +463,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->sequence('user_id_seq', 'order_id_seq', 'product_id_seq');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SEQUENCE user_id_seq, order_id_seq, product_id_seq
 ```
 
@@ -479,7 +479,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->sequence('user_id_seq')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SEQUENCE user_id_seq CASCADE
 ```
 
@@ -495,7 +495,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->sequence('user_id_seq')
     ->restrict();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SEQUENCE user_id_seq
 ```
 
@@ -510,7 +510,7 @@ $query = drop()->sequence('user_id_seq')
     ->ifExists()
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP SEQUENCE IF EXISTS user_id_seq CASCADE
 ```
 
diff --git a/documentation/components/libs/postgresql/table-query-builder.md b/documentation/components/libs/postgresql/table-query-builder.md
index 2773cfc469..f4c18bbe6f 100644
--- a/documentation/components/libs/postgresql/table-query-builder.md
+++ b/documentation/components/libs/postgresql/table-query-builder.md
@@ -13,13 +13,13 @@ The Table Query Builder provides a fluent, type-safe interface for constructing
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_serial, sql_type_varchar};
+use function Flow\PostgreSql\DSL\{create, column, column_type_serial, column_type_varchar};
 
 $query = create()->table('users')
-    ->column(column('id', sql_type_serial())->primaryKey())
-    ->column(column('name', sql_type_varchar(100))->notNull());
+    ->column(column('id', column_type_serial())->primaryKey())
+    ->column(column('name', column_type_varchar(100))->notNull());
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE users (id serial PRIMARY KEY, name varchar(100) NOT NULL)
 ```
 
@@ -28,12 +28,12 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_serial};
+use function Flow\PostgreSql\DSL\{create, column, column_type_serial};
 
 $query = create()->table('users', 'public')
-    ->column(column('id', sql_type_serial())->primaryKey());
+    ->column(column('id', column_type_serial())->primaryKey());
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE public.users (id serial PRIMARY KEY)
 ```
 
@@ -42,13 +42,13 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_serial};
+use function Flow\PostgreSql\DSL\{create, column, column_type_serial};
 
 $query = create()->table('users')
     ->ifNotExists()
-    ->column(column('id', sql_type_serial())->primaryKey());
+    ->column(column('id', column_type_serial())->primaryKey());
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE IF NOT EXISTS users (id serial PRIMARY KEY)
 ```
 
@@ -59,15 +59,15 @@ Columns support various constraints and options:
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_integer, sql_type_varchar, sql_type_boolean, sql_type_timestamp};
+use function Flow\PostgreSql\DSL\{create, column, column_type_integer, column_type_varchar, column_type_boolean, column_type_timestamp};
 
 $query = create()->table('users')
-    ->column(column('id', sql_type_integer())->identity('ALWAYS'))
-    ->column(column('email', sql_type_varchar(255))->notNull()->unique())
-    ->column(column('active', sql_type_boolean())->default(true))
-    ->column(column('created_at', sql_type_timestamp())->defaultRaw('CURRENT_TIMESTAMP'));
+    ->column(column('id', column_type_integer())->identity('ALWAYS'))
+    ->column(column('email', column_type_varchar(255))->notNull()->unique())
+    ->column(column('active', column_type_boolean())->default(true))
+    ->column(column('created_at', column_type_timestamp())->defaultRaw('CURRENT_TIMESTAMP'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE users (
 //   id int GENERATED ALWAYS AS IDENTITY,
 //   email varchar(255) NOT NULL UNIQUE,
@@ -81,13 +81,13 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_serial, sql_type_integer};
+use function Flow\PostgreSql\DSL\{create, column, column_type_serial, column_type_integer};
 
 $query = create()->table('orders')
-    ->column(column('id', sql_type_serial())->primaryKey())
-    ->column(column('user_id', sql_type_integer())->notNull()->references('users', 'id'));
+    ->column(column('id', column_type_serial())->primaryKey())
+    ->column(column('user_id', column_type_integer())->notNull()->references('users', 'id'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE orders (id serial PRIMARY KEY, user_id int NOT NULL REFERENCES users(id))
 ```
 
@@ -96,14 +96,14 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_varchar, sql_type_text};
+use function Flow\PostgreSql\DSL\{create, column, column_type_varchar, column_type_text};
 
 $query = create()->table('users')
-    ->column(column('first_name', sql_type_varchar(50)))
-    ->column(column('last_name', sql_type_varchar(50)))
-    ->column(column('full_name', sql_type_text())->generatedAs("first_name || ' ' || last_name"));
+    ->column(column('first_name', column_type_varchar(50)))
+    ->column(column('last_name', column_type_varchar(50)))
+    ->column(column('full_name', column_type_text())->generatedAs("first_name || ' ' || last_name"));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE users (first_name varchar(50), last_name varchar(50), full_name pg_catalog.text GENERATED ALWAYS AS (first_name || ' ' || last_name) STORED)
 ```
 
@@ -114,14 +114,14 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_integer, primary_key};
+use function Flow\PostgreSql\DSL\{create, column, column_type_integer, primary_key};
 
 $query = create()->table('order_items')
-    ->column(column('order_id', sql_type_integer())->notNull())
-    ->column(column('product_id', sql_type_integer())->notNull())
+    ->column(column('order_id', column_type_integer())->notNull())
+    ->column(column('product_id', column_type_integer())->notNull())
     ->constraint(primary_key('order_id', 'product_id'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE order_items (order_id int NOT NULL, product_id int NOT NULL, PRIMARY KEY (order_id, product_id))
 ```
 
@@ -130,14 +130,14 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_serial, sql_type_varchar, unique_constraint};
+use function Flow\PostgreSql\DSL\{create, column, column_type_serial, column_type_varchar, unique_constraint};
 
 $query = create()->table('users')
-    ->column(column('id', sql_type_serial())->primaryKey())
-    ->column(column('email', sql_type_varchar(255))->notNull())
+    ->column(column('id', column_type_serial())->primaryKey())
+    ->column(column('email', column_type_varchar(255))->notNull())
     ->constraint(unique_constraint('email'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE users (id serial PRIMARY KEY, email varchar(255) NOT NULL, UNIQUE (email))
 ```
 
@@ -146,14 +146,14 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_serial, sql_type_integer, check_constraint};
+use function Flow\PostgreSql\DSL\{create, column, column_type_serial, column_type_integer, check_constraint};
 
 $query = create()->table('products')
-    ->column(column('id', sql_type_serial())->primaryKey())
-    ->column(column('price', sql_type_integer()))
+    ->column(column('id', column_type_serial())->primaryKey())
+    ->column(column('price', column_type_integer()))
     ->constraint(check_constraint('price > 0')->name('positive_price'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE products (id serial PRIMARY KEY, price int, CONSTRAINT positive_price CHECK (price > 0))
 ```
 
@@ -162,18 +162,18 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_serial, sql_type_integer, foreign_key, ref_action_cascade, ref_action_restrict};
+use function Flow\PostgreSql\DSL\{create, column, column_type_serial, column_type_integer, foreign_key, ref_action_cascade, ref_action_restrict};
 
 $query = create()->table('orders')
-    ->column(column('id', sql_type_serial())->primaryKey())
-    ->column(column('user_id', sql_type_integer())->notNull())
+    ->column(column('id', column_type_serial())->primaryKey())
+    ->column(column('user_id', column_type_integer())->notNull())
     ->constraint(
         foreign_key(['user_id'], 'users', ['id'])
             ->onDelete(ref_action_cascade())
             ->onUpdate(ref_action_restrict())
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE orders (id serial PRIMARY KEY, user_id int NOT NULL, FOREIGN KEY (user_id) REFERENCES ONLY users (id) ON UPDATE RESTRICT ON DELETE CASCADE)
 ```
 
@@ -182,13 +182,13 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_integer};
+use function Flow\PostgreSql\DSL\{create, column, column_type_integer};
 
 $query = create()->table('temp_results')
     ->temporary()
-    ->column(column('id', sql_type_integer()));
+    ->column(column('id', column_type_integer()));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TEMPORARY TABLE temp_results (id int) ON COMMIT DROP
 ```
 
@@ -197,13 +197,13 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_integer};
+use function Flow\PostgreSql\DSL\{create, column, column_type_integer};
 
 $query = create()->table('cache_data')
     ->unlogged()
-    ->column(column('id', sql_type_integer()));
+    ->column(column('id', column_type_integer()));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE UNLOGGED TABLE cache_data (id int)
 ```
 
@@ -212,13 +212,13 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_varchar};
+use function Flow\PostgreSql\DSL\{create, column, column_type_varchar};
 
 $query = create()->table('employees')
-    ->column(column('department', sql_type_varchar(100)))
+    ->column(column('department', column_type_varchar(100)))
     ->inherits('persons');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE employees (department varchar(100)) INHERITS (persons)
 ```
 
@@ -227,25 +227,25 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{create, column, sql_type_integer, sql_type_timestamp};
+use function Flow\PostgreSql\DSL\{create, column, column_type_integer, column_type_timestamp};
 
 // Range partitioning
 $query = create()->table('logs')
-    ->column(column('id', sql_type_integer()))
-    ->column(column('created_at', sql_type_timestamp()))
+    ->column(column('id', column_type_integer()))
+    ->column(column('created_at', column_type_timestamp()))
     ->partitionByRange('created_at');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE logs (id int, created_at timestamp) PARTITION BY RANGE (created_at)
 
 // List partitioning
 $query = create()->table('sales')
-    ->column(column('region', sql_type_varchar(50)))
+    ->column(column('region', column_type_varchar(50)))
     ->partitionByList('region');
 
 // Hash partitioning
 $query = create()->table('data')
-    ->column(column('id', sql_type_integer()))
+    ->column(column('id', column_type_integer()))
     ->partitionByHash('id');
 ```
 
@@ -264,7 +264,7 @@ $selectQuery = select()
 
 $query = create()->tableAs('users_backup', $selectQuery);
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE users_backup AS SELECT id, name FROM users
 ```
 
@@ -282,7 +282,7 @@ $selectQuery = select()
 $query = create()->tableAs('users_backup', $selectQuery)
     ->ifNotExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE IF NOT EXISTS users_backup AS SELECT id, name FROM users
 ```
 
@@ -300,7 +300,7 @@ $selectQuery = select()
 $query = create()->tableAs('users_backup', $selectQuery)
     ->columnNames('user_id', 'user_name');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE users_backup(user_id, user_name) AS SELECT id, name FROM users
 ```
 
@@ -318,7 +318,7 @@ $selectQuery = select()
 $query = create()->tableAs('users_backup', $selectQuery)
     ->withNoData();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TABLE users_backup AS SELECT id, name FROM users WITH NO DATA
 ```
 
@@ -329,12 +329,12 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{alter, column, sql_type_varchar};
+use function Flow\PostgreSql\DSL\{alter, column, column_type_varchar};
 
 $query = alter()->table('users')
-    ->addColumn(column('email', sql_type_varchar(255))->notNull());
+    ->addColumn(column('email', column_type_varchar(255))->notNull());
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users ADD COLUMN email varchar(255) NOT NULL
 ```
 
@@ -348,14 +348,14 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->table('users')
     ->dropColumn('temp_column');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users DROP temp_column
 
 // With CASCADE
 $query = alter()->table('users')
     ->dropColumn('temp_column', cascade: true);
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users DROP temp_column CASCADE
 ```
 
@@ -364,12 +364,12 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{alter, sql_type_text};
+use function Flow\PostgreSql\DSL\{alter, column_type_text};
 
 $query = alter()->table('users')
-    ->alterColumnType('name', sql_type_text());
+    ->alterColumnType('name', column_type_text());
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users ALTER COLUMN name TYPE pg_catalog.text
 ```
 
@@ -384,14 +384,14 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->table('users')
     ->alterColumnSetNotNull('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users ALTER COLUMN email SET NOT NULL
 
 // Drop NOT NULL
 $query = alter()->table('users')
     ->alterColumnDropNotNull('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users ALTER COLUMN email DROP NOT NULL
 ```
 
@@ -406,14 +406,14 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->table('users')
     ->alterColumnSetDefault('status', "'active'");
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users ALTER COLUMN status SET DEFAULT 'active'
 
 // Drop default
 $query = alter()->table('users')
     ->alterColumnDropDefault('status');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users ALTER COLUMN status DROP DEFAULT
 ```
 
@@ -427,7 +427,7 @@ use function Flow\PostgreSql\DSL\{alter, unique_constraint};
 $query = alter()->table('users')
     ->addConstraint(unique_constraint('email')->name('users_email_unique'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users ADD CONSTRAINT users_email_unique UNIQUE (email)
 ```
 
@@ -441,7 +441,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->table('users')
     ->dropConstraint('users_email_unique');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users DROP CONSTRAINT users_email_unique
 ```
 
@@ -450,14 +450,14 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{alter, column, sql_type_varchar};
+use function Flow\PostgreSql\DSL\{alter, column, column_type_varchar};
 
 $query = alter()->table('users')
-    ->addColumn(column('phone', sql_type_varchar(20)))
+    ->addColumn(column('phone', column_type_varchar(20)))
     ->dropColumn('fax')
     ->alterColumnSetNotNull('email');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users ADD COLUMN phone varchar(20), DROP fax, ALTER COLUMN email SET NOT NULL
 ```
 
@@ -466,13 +466,13 @@ echo $query->toSQL();
 ```php
 <?php
 
-use function Flow\PostgreSql\DSL\{alter, column, sql_type_varchar};
+use function Flow\PostgreSql\DSL\{alter, column, column_type_varchar};
 
 $query = alter()->table('users')
     ->ifExists()
-    ->addColumn(column('email', sql_type_varchar(255)));
+    ->addColumn(column('email', column_type_varchar(255)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE IF EXISTS users ADD COLUMN email varchar(255)
 ```
 
@@ -486,7 +486,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->table('users')
     ->renameColumn('old_name', 'new_name');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users RENAME COLUMN old_name TO new_name
 ```
 
@@ -500,7 +500,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->table('users')
     ->renameConstraint('old_constraint', 'new_constraint');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users RENAME CONSTRAINT old_constraint TO new_constraint
 ```
 
@@ -514,7 +514,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->table('users')
     ->renameTo('users_archive');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users RENAME TO users_archive
 ```
 
@@ -528,7 +528,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->table('users')
     ->setSchema('archive');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TABLE users SET SCHEMA archive
 ```
 
@@ -543,7 +543,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TABLE users
 ```
 
@@ -557,7 +557,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->table('users')
     ->ifExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TABLE IF EXISTS users
 ```
 
@@ -571,7 +571,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->table('users')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TABLE users CASCADE
 ```
 
@@ -584,7 +584,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->table('users', 'orders', 'products');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TABLE users, orders, products
 ```
 
@@ -599,7 +599,7 @@ use function Flow\PostgreSql\DSL\truncate_table;
 
 $query = truncate_table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // TRUNCATE users
 ```
 
@@ -612,7 +612,7 @@ use function Flow\PostgreSql\DSL\truncate_table;
 
 $query = truncate_table('users', 'orders', 'products');
 
-echo $query->toSQL();
+echo $query->toSql();
 // TRUNCATE users, orders, products
 ```
 
@@ -626,7 +626,7 @@ use function Flow\PostgreSql\DSL\truncate_table;
 $query = truncate_table('users')
     ->restartIdentity();
 
-echo $query->toSQL();
+echo $query->toSql();
 // TRUNCATE users RESTART IDENTITY
 ```
 
@@ -640,7 +640,7 @@ use function Flow\PostgreSql\DSL\truncate_table;
 $query = truncate_table('users')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // TRUNCATE users CASCADE
 ```
 
@@ -652,47 +652,47 @@ The following SQL type functions are available:
 
 | Function | PostgreSQL Type |
 |----------|-----------------|
-| `sql_type_integer()` | int |
-| `sql_type_bigint()` | bigint |
-| `sql_type_smallint()` | smallint |
-| `sql_type_serial()` | serial |
-| `sql_type_bigserial()` | bigserial |
-| `sql_type_numeric($precision, $scale)` | numeric(p,s) |
-| `sql_type_decimal($precision, $scale)` | decimal(p,s) |
-| `sql_type_real()` | real |
-| `sql_type_double()` | double precision |
+| `column_type_integer()` | int |
+| `column_type_bigint()` | bigint |
+| `column_type_smallint()` | smallint |
+| `column_type_serial()` | serial |
+| `column_type_bigserial()` | bigserial |
+| `column_type_numeric($precision, $scale)` | numeric(p,s) |
+| `column_type_decimal($precision, $scale)` | decimal(p,s) |
+| `column_type_real()` | real |
+| `column_type_double()` | double precision |
 
 ### String Types
 
 | Function | PostgreSQL Type |
 |----------|-----------------|
-| `sql_type_text()` | text |
-| `sql_type_varchar($length)` | varchar(n) |
-| `sql_type_char($length)` | char(n) |
+| `column_type_text()` | text |
+| `column_type_varchar($length)` | varchar(n) |
+| `column_type_char($length)` | char(n) |
 
 ### Date/Time Types
 
 | Function | PostgreSQL Type |
 |----------|-----------------|
-| `sql_type_date()` | date |
-| `sql_type_time($precision)` | time |
-| `sql_type_timestamp($precision)` | timestamp |
-| `sql_type_timestamptz($precision)` | timestamptz |
-| `sql_type_interval()` | interval |
+| `column_type_date()` | date |
+| `column_type_time($precision)` | time |
+| `column_type_timestamp($precision)` | timestamp |
+| `column_type_timestamptz($precision)` | timestamptz |
+| `column_type_interval()` | interval |
 
 ### Other Types
 
 | Function | PostgreSQL Type |
 |----------|-----------------|
-| `sql_type_boolean()` | boolean |
-| `sql_type_uuid()` | uuid |
-| `sql_type_json()` | json |
-| `sql_type_jsonb()` | jsonb |
-| `sql_type_bytea()` | bytea |
-| `sql_type_inet()` | inet |
-| `sql_type_cidr()` | cidr |
-| `sql_type_macaddr()` | macaddr |
-| `sql_type_array($elementType)` | type[] |
+| `column_type_boolean()` | boolean |
+| `column_type_uuid()` | uuid |
+| `column_type_json()` | json |
+| `column_type_jsonb()` | jsonb |
+| `column_type_bytea()` | bytea |
+| `column_type_inet()` | inet |
+| `column_type_cidr()` | cidr |
+| `column_type_macaddr()` | macaddr |
+| `column_type_array($elementType)` | type[] |
 
 ## Referential Actions
 
diff --git a/documentation/components/libs/postgresql/transaction-query-builder.md b/documentation/components/libs/postgresql/transaction-query-builder.md
index 61102841af..b4bf6b6b86 100644
--- a/documentation/components/libs/postgresql/transaction-query-builder.md
+++ b/documentation/components/libs/postgresql/transaction-query-builder.md
@@ -17,7 +17,7 @@ use function Flow\PostgreSql\DSL\begin;
 
 $query = begin();
 
-echo $query->toSQL();
+echo $query->toSql();
 // BEGIN
 ```
 
@@ -32,7 +32,7 @@ use Flow\PostgreSql\QueryBuilder\Transaction\IsolationLevel;
 $query = begin()
     ->isolationLevel(IsolationLevel::SERIALIZABLE);
 
-echo $query->toSQL();
+echo $query->toSql();
 // BEGIN ISOLATION LEVEL SERIALIZABLE
 ```
 
@@ -47,14 +47,14 @@ use function Flow\PostgreSql\DSL\begin;
 $query = begin()
     ->readOnly();
 
-echo $query->toSQL();
+echo $query->toSql();
 // BEGIN READ ONLY
 
 // Read-write transaction (explicit)
 $query = begin()
     ->readWrite();
 
-echo $query->toSQL();
+echo $query->toSql();
 // BEGIN READ WRITE
 ```
 
@@ -73,7 +73,7 @@ $query = begin()
     ->readOnly()
     ->deferrable();
 
-echo $query->toSQL();
+echo $query->toSql();
 // BEGIN ISOLATION LEVEL SERIALIZABLE, READ ONLY, DEFERRABLE
 ```
 
@@ -88,7 +88,7 @@ use function Flow\PostgreSql\DSL\commit;
 
 $query = commit();
 
-echo $query->toSQL();
+echo $query->toSql();
 // COMMIT
 ```
 
@@ -104,7 +104,7 @@ use function Flow\PostgreSql\DSL\commit;
 $query = commit()
     ->andChain();
 
-echo $query->toSQL();
+echo $query->toSql();
 // COMMIT AND CHAIN
 ```
 
@@ -119,7 +119,7 @@ use function Flow\PostgreSql\DSL\rollback;
 
 $query = rollback();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ROLLBACK
 ```
 
@@ -135,7 +135,7 @@ use function Flow\PostgreSql\DSL\rollback;
 $query = rollback()
     ->toSavepoint('my_savepoint');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ROLLBACK TO SAVEPOINT my_savepoint
 ```
 
@@ -149,7 +149,7 @@ use function Flow\PostgreSql\DSL\rollback;
 $query = rollback()
     ->andChain();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ROLLBACK AND CHAIN
 ```
 
@@ -164,7 +164,7 @@ use function Flow\PostgreSql\DSL\savepoint;
 
 $query = savepoint('my_savepoint');
 
-echo $query->toSQL();
+echo $query->toSql();
 // SAVEPOINT my_savepoint
 ```
 
@@ -177,7 +177,7 @@ use function Flow\PostgreSql\DSL\release_savepoint;
 
 $query = release_savepoint('my_savepoint');
 
-echo $query->toSQL();
+echo $query->toSql();
 // RELEASE my_savepoint
 ```
 
@@ -194,7 +194,7 @@ use Flow\PostgreSql\QueryBuilder\Transaction\IsolationLevel;
 $query = set_transaction()
     ->isolationLevel(IsolationLevel::SERIALIZABLE);
 
-echo $query->toSQL();
+echo $query->toSql();
 // SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
 ```
 
@@ -208,7 +208,7 @@ use function Flow\PostgreSql\DSL\set_transaction;
 $query = set_transaction()
     ->readOnly();
 
-echo $query->toSQL();
+echo $query->toSql();
 // SET TRANSACTION READ ONLY
 ```
 
@@ -225,7 +225,7 @@ $query = set_transaction()
     ->readOnly()
     ->deferrable();
 
-echo $query->toSQL();
+echo $query->toSql();
 // SET TRANSACTION ISOLATION LEVEL SERIALIZABLE, READ ONLY, DEFERRABLE
 ```
 
@@ -242,7 +242,7 @@ use Flow\PostgreSql\QueryBuilder\Transaction\IsolationLevel;
 $query = set_session_transaction()
     ->isolationLevel(IsolationLevel::SERIALIZABLE);
 
-echo $query->toSQL();
+echo $query->toSql();
 // SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL SERIALIZABLE
 ```
 
@@ -257,7 +257,7 @@ use function Flow\PostgreSql\DSL\transaction_snapshot;
 
 $query = transaction_snapshot('00000003-0000001A-1');
 
-echo $query->toSQL();
+echo $query->toSql();
 // SET TRANSACTION SNAPSHOT '00000003-0000001A-1'
 ```
 
@@ -274,7 +274,7 @@ use function Flow\PostgreSql\DSL\prepare_transaction;
 
 $query = prepare_transaction('my_transaction');
 
-echo $query->toSQL();
+echo $query->toSql();
 // PREPARE TRANSACTION 'my_transaction'
 ```
 
@@ -287,7 +287,7 @@ use function Flow\PostgreSql\DSL\commit_prepared;
 
 $query = commit_prepared('my_transaction');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COMMIT PREPARED 'my_transaction'
 ```
 
@@ -300,7 +300,7 @@ use function Flow\PostgreSql\DSL\rollback_prepared;
 
 $query = rollback_prepared('my_transaction');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ROLLBACK PREPARED 'my_transaction'
 ```
 
diff --git a/documentation/components/libs/postgresql/trigger-rule-query-builder.md b/documentation/components/libs/postgresql/trigger-rule-query-builder.md
index b78b850df2..ff047e15b5 100644
--- a/documentation/components/libs/postgresql/trigger-rule-query-builder.md
+++ b/documentation/components/libs/postgresql/trigger-rule-query-builder.md
@@ -6,10 +6,10 @@ This document describes the PostgreSQL Trigger and Rule Query Builder components
 
 ### CREATE TRIGGER
 
-Create triggers using the `create_trigger()` DSL function:
+Create triggers using the `create()->trigger()` builder method:
 
 ```php
-use function Flow\PostgreSql\DSL\create;
+use function Flow\PostgreSql\DSL\{create, col, eq, literal};
 use Flow\PostgreSql\QueryBuilder\Schema\Trigger\TriggerEvent;
 
 // Basic AFTER INSERT trigger
@@ -48,7 +48,7 @@ $builder = create()->trigger('protect_admin')
     ->before(TriggerEvent::DELETE)
     ->on('users')
     ->forEachRow()
-    ->when(raw_cond('OLD.role = \'admin\''))
+    ->when(eq(col('role', 'OLD'), literal('admin')))
     ->execute('raise_error');
 // CREATE TRIGGER protect_admin BEFORE DELETE ON users FOR EACH ROW WHEN (old.role = 'admin') EXECUTE FUNCTION raise_error()
 
@@ -183,7 +183,7 @@ $builder = alter()->table('users')->disableTriggerUser();
 
 ### CREATE RULE
 
-Create rules using the `create_rule()` DSL function:
+Create rules using the `create()->rule()` builder method:
 
 ```php
 use function Flow\PostgreSql\DSL\create;
diff --git a/documentation/components/libs/postgresql/type-query-builder.md b/documentation/components/libs/postgresql/type-query-builder.md
index e1f02cf429..9e48edf528 100644
--- a/documentation/components/libs/postgresql/type-query-builder.md
+++ b/documentation/components/libs/postgresql/type-query-builder.md
@@ -23,7 +23,7 @@ $query = create()->compositeType('address')
         type_attr('zip', 'text')
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE address AS (street text, city text, zip text)
 ```
 
@@ -39,7 +39,7 @@ $query = create()->compositeType('public.address')
         type_attr('street', 'text')
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE public.address AS (street text)
 ```
 
@@ -55,7 +55,7 @@ $query = create()->compositeType('person')
         type_attr('name', 'text')->collate('en_US')
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE person AS (name text COLLATE "en_US")
 ```
 
@@ -71,7 +71,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->enumType('status')
     ->labels('pending', 'active', 'closed');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE status AS ENUM ('pending', 'active', 'closed')
 ```
 
@@ -85,7 +85,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->enumType('public.status')
     ->labels('pending', 'active');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE public.status AS ENUM ('pending', 'active')
 ```
 
@@ -101,7 +101,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->rangeType('floatrange')
     ->subtype('float8');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE floatrange AS RANGE (subtype = float8)
 ```
 
@@ -115,7 +115,7 @@ use function Flow\PostgreSql\DSL\create;
 $query = create()->rangeType('public.floatrange')
     ->subtype('float8');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE public.floatrange AS RANGE (subtype = float8)
 ```
 
@@ -130,7 +130,7 @@ $query = create()->rangeType('floatrange')
     ->subtype('float8')
     ->subtypeOpclass('float8_ops');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE floatrange AS RANGE (subtype = float8, subtype_opclass = 'float8_ops')
 ```
 
@@ -145,7 +145,7 @@ $query = create()->rangeType('textrange')
     ->subtype('text')
     ->collation('en_US');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE textrange AS RANGE (subtype = text, "collation" = 'en_US')
 ```
 
@@ -160,7 +160,7 @@ $query = create()->rangeType('daterange')
     ->subtype('date')
     ->canonical('daterange_canonical');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE daterange AS RANGE (subtype = date, canonical = 'daterange_canonical')
 ```
 
@@ -175,7 +175,7 @@ $query = create()->rangeType('floatrange')
     ->subtype('float8')
     ->subtypeDiff('float8mi');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TYPE floatrange AS RANGE (subtype = float8, subtype_diff = 'float8mi')
 ```
 
@@ -191,7 +191,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->enumType('status')
     ->addValue('archived');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TYPE status ADD VALUE 'archived'
 ```
 
@@ -206,7 +206,7 @@ $query = alter()->enumType('status')
     ->addValue('archived')
     ->ifNotExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TYPE status ADD VALUE IF NOT EXISTS 'archived'
 ```
 
@@ -220,7 +220,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->enumType('status')
     ->addValueBefore('pending', 'active');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TYPE status ADD VALUE 'pending' BEFORE 'active'
 ```
 
@@ -234,7 +234,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->enumType('status')
     ->addValueAfter('archived', 'closed');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TYPE status ADD VALUE 'archived' AFTER 'closed'
 ```
 
@@ -248,7 +248,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->enumType('status')
     ->renameValue('old_name', 'new_name');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER TYPE status RENAME VALUE 'old_name' TO 'new_name'
 ```
 
@@ -263,7 +263,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->type('address');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TYPE address
 ```
 
@@ -277,7 +277,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->type('address')
     ->ifExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TYPE IF EXISTS address
 ```
 
@@ -293,7 +293,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->type('address')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TYPE address CASCADE
 ```
 
@@ -309,7 +309,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->type('address')
     ->restrict();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TYPE address
 ```
 
@@ -322,7 +322,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->type('address', 'status', 'floatrange');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TYPE address, status, floatrange
 ```
 
@@ -337,7 +337,7 @@ $query = drop()->type('address')
     ->ifExists()
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP TYPE IF EXISTS address CASCADE
 ```
 
diff --git a/documentation/components/libs/postgresql/update-query-builder.md b/documentation/components/libs/postgresql/update-query-builder.md
index d3ca6055c6..7a75f7ad4b 100644
--- a/documentation/components/libs/postgresql/update-query-builder.md
+++ b/documentation/components/libs/postgresql/update-query-builder.md
@@ -18,7 +18,7 @@ $query = update()
     ->set('name', literal('John'))
     ->where(eq(col('id'), literal(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE users SET name = 'John' WHERE id = 1
 ```
 
@@ -36,7 +36,7 @@ $query = update()
     ->set('name', param(1))
     ->where(eq(col('id'), param(2)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE users SET name = $1 WHERE id = $2
 ```
 
@@ -54,7 +54,7 @@ $query = update()
     ->set('email', literal('john@example.com'))
     ->where(eq(col('id'), literal(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE users SET name = 'John', email = 'john@example.com' WHERE id = 1
 
 // Or use setAll() for multiple columns at once
@@ -66,7 +66,7 @@ $query = update()
     ])
     ->where(eq(col('id'), literal(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE users SET name = 'John', email = 'john@example.com' WHERE id = 1
 ```
 
@@ -82,7 +82,7 @@ $query = update()
     ->set('name', literal('John'))
     ->where(eq(col('u.id'), literal(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE users u SET name = 'John' WHERE u.id = 1
 ```
 
@@ -101,7 +101,7 @@ $query = update()
     ->from(table('users'))
     ->where(eq(col('orders.user_id'), col('users.id')));
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE orders SET status = 'completed' FROM users WHERE orders.user_id = users.id
 ```
 
@@ -124,7 +124,7 @@ $query = update()
     ->set('price', sub_select($subquery))
     ->where(eq(col('id'), literal(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE products SET price = (SELECT avg_price FROM price_stats WHERE category = products.category) WHERE id = 1
 ```
 
@@ -140,7 +140,7 @@ $query = update()
     ->set('price', col('original_price'))
     ->where(eq(col('id'), literal(1)));
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE products SET price = original_price WHERE id = 1
 ```
 
@@ -158,7 +158,7 @@ $query = update()
     ->where(eq(col('id'), literal(1)))
     ->returning(col('id'), col('name'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE users SET name = 'John' WHERE id = 1 RETURNING id, name
 
 // Return all columns
@@ -168,7 +168,7 @@ $query = update()
     ->where(eq(col('id'), literal(1)))
     ->returningAll();
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE users SET name = 'John' WHERE id = 1 RETURNING *
 ```
 
@@ -179,20 +179,20 @@ echo $query->toSQL();
 
 use function Flow\PostgreSql\DSL\{
     update, literal, literal,
-    col, eq, gt, cond_and
+    col, eq, gt, and_
 };
 
 $query = update()
     ->update('users')
     ->set('status', literal('premium'))
     ->where(
-        cond_and(
+        and_(
             eq(col('active'), literal(true)),
             gt(col('orders_count'), literal(100))
         )
     );
 
-echo $query->toSQL();
+echo $query->toSql();
 // UPDATE users SET status = 'premium' WHERE active = true AND orders_count > 100
 ```
 
diff --git a/documentation/components/libs/postgresql/utility-query-builder.md b/documentation/components/libs/postgresql/utility-query-builder.md
index a4fd6e021e..0663fdc58b 100644
--- a/documentation/components/libs/postgresql/utility-query-builder.md
+++ b/documentation/components/libs/postgresql/utility-query-builder.md
@@ -19,7 +19,7 @@ use function Flow\PostgreSql\DSL\vacuum;
 
 $query = vacuum();
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM
 ```
 
@@ -32,7 +32,7 @@ use function Flow\PostgreSql\DSL\vacuum;
 
 $query = vacuum()->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM users
 ```
 
@@ -45,7 +45,7 @@ use function Flow\PostgreSql\DSL\vacuum;
 
 $query = vacuum()->tables('users', 'orders', 'products');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM users, orders, products
 ```
 
@@ -58,7 +58,7 @@ use function Flow\PostgreSql\DSL\vacuum;
 
 $query = vacuum()->table('public.users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM public.users
 ```
 
@@ -71,7 +71,7 @@ use function Flow\PostgreSql\DSL\vacuum;
 
 $query = vacuum()->table('users', 'email', 'name');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM users (email, name)
 ```
 
@@ -86,7 +86,7 @@ use function Flow\PostgreSql\DSL\vacuum;
 
 $query = vacuum()->full()->tables('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (FULL) users
 ```
 
@@ -101,7 +101,7 @@ use function Flow\PostgreSql\DSL\vacuum;
 
 $query = vacuum()->analyze()->tables('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (ANALYZE) users
 ```
 
@@ -120,7 +120,7 @@ $query = vacuum()
     ->verbose()
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (FULL, FREEZE, VERBOSE, ANALYZE) users
 
 // Skip locked tables
@@ -128,7 +128,7 @@ $query = vacuum()
     ->skipLocked()
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (SKIP_LOCKED) users
 
 // Parallel vacuum
@@ -136,7 +136,7 @@ $query = vacuum()
     ->parallel(4)
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (PARALLEL 4) users
 
 // Index cleanup options
@@ -144,7 +144,7 @@ $query = vacuum()
     ->indexCleanup(IndexCleanup::OFF)
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (INDEX_CLEANUP off) users
 
 // Process options
@@ -153,7 +153,7 @@ $query = vacuum()
     ->processToast(false)
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (PROCESS_MAIN true, PROCESS_TOAST false) users
 
 // Truncate option
@@ -161,7 +161,7 @@ $query = vacuum()
     ->truncate(true)
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (TRUNCATE true) users
 
 // Freeze option
@@ -169,7 +169,7 @@ $query = vacuum()
     ->freeze()
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (FREEZE) users
 
 // Disable page skipping
@@ -177,7 +177,7 @@ $query = vacuum()
     ->disablePageSkipping()
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // VACUUM (DISABLE_PAGE_SKIPPING) users
 ```
 
@@ -194,7 +194,7 @@ use function Flow\PostgreSql\DSL\analyze;
 
 $query = analyze();
 
-echo $query->toSQL();
+echo $query->toSql();
 // ANALYZE
 ```
 
@@ -207,7 +207,7 @@ use function Flow\PostgreSql\DSL\analyze;
 
 $query = analyze()->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ANALYZE users
 ```
 
@@ -220,7 +220,7 @@ use function Flow\PostgreSql\DSL\analyze;
 
 $query = analyze()->table('users', 'email', 'name');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ANALYZE users (email, name)
 ```
 
@@ -233,7 +233,7 @@ use function Flow\PostgreSql\DSL\analyze;
 
 $query = analyze()->tables('users', 'orders', 'products');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ANALYZE users, orders, products
 ```
 
@@ -249,7 +249,7 @@ $query = analyze()
     ->verbose()
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ANALYZE (VERBOSE) users
 
 // Skip locked tables
@@ -257,7 +257,7 @@ $query = analyze()
     ->skipLocked()
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ANALYZE (SKIP_LOCKED) users
 ```
 
@@ -274,7 +274,7 @@ use function Flow\PostgreSql\DSL\{explain, select};
 
 $query = explain(select()->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // EXPLAIN SELECT * FROM users
 ```
 
@@ -289,7 +289,7 @@ use function Flow\PostgreSql\DSL\{explain, select};
 
 $query = explain(select()->from('users'))->analyze();
 
-echo $query->toSQL();
+echo $query->toSql();
 // EXPLAIN (ANALYZE) SELECT * FROM users
 ```
 
@@ -303,7 +303,7 @@ use function Flow\PostgreSql\DSL\{explain, select};
 $query = explain(select()->from('users'))
     ->verbose();
 
-echo $query->toSQL();
+echo $query->toSql();
 // EXPLAIN (VERBOSE) SELECT * FROM users
 ```
 
@@ -319,21 +319,21 @@ use Flow\PostgreSql\QueryBuilder\Utility\ExplainFormat;
 $query = explain(select()->from('users'))
     ->format(ExplainFormat::JSON);
 
-echo $query->toSQL();
+echo $query->toSql();
 // EXPLAIN (FORMAT json) SELECT * FROM users
 
 // XML format
 $query = explain(select()->from('users'))
     ->format(ExplainFormat::XML);
 
-echo $query->toSQL();
+echo $query->toSql();
 // EXPLAIN (FORMAT xml) SELECT * FROM users
 
 // YAML format
 $query = explain(select()->from('users'))
     ->format(ExplainFormat::YAML);
 
-echo $query->toSQL();
+echo $query->toSql();
 // EXPLAIN (FORMAT yaml) SELECT * FROM users
 ```
 
@@ -353,7 +353,7 @@ $query = explain(select()->from('users'))
     ->costs(true)
     ->format(ExplainFormat::JSON);
 
-echo $query->toSQL();
+echo $query->toSql();
 // EXPLAIN (ANALYZE, VERBOSE, BUFFERS true, TIMING true, COSTS true, FORMAT json) SELECT * FROM users
 ```
 
@@ -368,14 +368,14 @@ use function Flow\PostgreSql\DSL\{explain, select};
 $query = explain(select()->from('users'))
     ->costs(true);
 
-echo $query->toSQL();
+echo $query->toSql();
 // EXPLAIN (COSTS true) SELECT * FROM users
 
 // Without costs
 $query = explain(select()->from('users'))
     ->costs(false);
 
-echo $query->toSQL();
+echo $query->toSql();
 // EXPLAIN (COSTS false) SELECT * FROM users
 ```
 
@@ -392,7 +392,7 @@ use function Flow\PostgreSql\DSL\lock_table;
 
 $query = lock_table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users
 ```
 
@@ -406,40 +406,40 @@ use Flow\PostgreSql\QueryBuilder\Utility\LockMode;
 
 // Using mode shortcuts
 $query = lock_table('users')->accessShare();
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN ACCESS SHARE MODE
 
 $query = lock_table('users')->rowShare();
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN ROW SHARE MODE
 
 $query = lock_table('users')->rowExclusive();
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN ROW EXCLUSIVE MODE
 
 $query = lock_table('users')->shareUpdateExclusive();
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN SHARE UPDATE EXCLUSIVE MODE
 
 $query = lock_table('users')->share();
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN SHARE MODE
 
 $query = lock_table('users')->shareRowExclusive();
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN SHARE ROW EXCLUSIVE MODE
 
 $query = lock_table('users')->exclusive();
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN EXCLUSIVE MODE
 
 $query = lock_table('users')->accessExclusive();
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN ACCESS EXCLUSIVE MODE
 
 // Using enum
 $query = lock_table('users')->inMode(LockMode::EXCLUSIVE);
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN EXCLUSIVE MODE
 ```
 
@@ -453,7 +453,7 @@ use function Flow\PostgreSql\DSL\lock_table;
 $query = lock_table('users', 'orders')
     ->exclusive();
 
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users, orders IN EXCLUSIVE MODE
 ```
 
@@ -468,7 +468,7 @@ $query = lock_table('users')
     ->exclusive()
     ->nowait();
 
-echo $query->toSQL();
+echo $query->toSql();
 // LOCK TABLE users IN EXCLUSIVE MODE NOWAIT
 ```
 
@@ -500,7 +500,7 @@ use Flow\PostgreSql\QueryBuilder\Utility\CommentTarget;
 $query = comment(CommentTarget::TABLE, 'users')
     ->is('User accounts table');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COMMENT ON TABLE users IS 'User accounts table'
 ```
 
@@ -515,7 +515,7 @@ use Flow\PostgreSql\QueryBuilder\Utility\CommentTarget;
 $query = comment(CommentTarget::COLUMN, 'users.email')
     ->is('User email address');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COMMENT ON COLUMN users.email IS 'User email address'
 ```
 
@@ -530,7 +530,7 @@ use Flow\PostgreSql\QueryBuilder\Utility\CommentTarget;
 $query = comment(CommentTarget::INDEX, 'idx_users_email')
     ->is('Email lookup index');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COMMENT ON INDEX idx_users_email IS 'Email lookup index'
 ```
 
@@ -545,7 +545,7 @@ use Flow\PostgreSql\QueryBuilder\Utility\CommentTarget;
 $query = comment(CommentTarget::SCHEMA, 'public')
     ->is('Default schema');
 
-echo $query->toSQL();
+echo $query->toSql();
 // COMMENT ON SCHEMA public IS 'Default schema'
 ```
 
@@ -560,7 +560,7 @@ use Flow\PostgreSql\QueryBuilder\Utility\CommentTarget;
 $query = comment(CommentTarget::TABLE, 'users')
     ->isNull();
 
-echo $query->toSQL();
+echo $query->toSql();
 // COMMENT ON TABLE users IS NULL
 ```
 
@@ -598,7 +598,7 @@ use function Flow\PostgreSql\DSL\cluster;
 
 $query = cluster();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CLUSTER
 ```
 
@@ -611,7 +611,7 @@ use function Flow\PostgreSql\DSL\cluster;
 
 $query = cluster()->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CLUSTER users
 ```
 
@@ -625,7 +625,7 @@ use function Flow\PostgreSql\DSL\cluster;
 $query = cluster()->table('users')
     ->using('idx_users_pkey');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CLUSTER users USING idx_users_pkey
 ```
 
@@ -638,7 +638,7 @@ use function Flow\PostgreSql\DSL\cluster;
 
 $query = cluster()->table('public.users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CLUSTER public.users
 ```
 
@@ -653,7 +653,7 @@ $query = cluster()
     ->verbose()
     ->table('users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CLUSTER (VERBOSE) users
 ```
 
@@ -671,7 +671,7 @@ use Flow\PostgreSql\QueryBuilder\Utility\DiscardType;
 
 $query = discard(DiscardType::ALL);
 
-echo $query->toSQL();
+echo $query->toSql();
 // DISCARD ALL
 ```
 
@@ -685,7 +685,7 @@ use Flow\PostgreSql\QueryBuilder\Utility\DiscardType;
 
 $query = discard(DiscardType::PLANS);
 
-echo $query->toSQL();
+echo $query->toSql();
 // DISCARD PLANS
 ```
 
@@ -699,7 +699,7 @@ use Flow\PostgreSql\QueryBuilder\Utility\DiscardType;
 
 $query = discard(DiscardType::SEQUENCES);
 
-echo $query->toSQL();
+echo $query->toSql();
 // DISCARD SEQUENCES
 ```
 
@@ -713,7 +713,7 @@ use Flow\PostgreSql\QueryBuilder\Utility\DiscardType;
 
 $query = discard(DiscardType::TEMP);
 
-echo $query->toSQL();
+echo $query->toSql();
 // DISCARD TEMP
 ```
 
diff --git a/documentation/components/libs/postgresql/view-query-builder.md b/documentation/components/libs/postgresql/view-query-builder.md
index 91b96d0624..1037db712a 100644
--- a/documentation/components/libs/postgresql/view-query-builder.md
+++ b/documentation/components/libs/postgresql/view-query-builder.md
@@ -19,7 +19,7 @@ use function Flow\PostgreSql\DSL\{create, select};
 $query = create()->view('active_users')
     ->as(select()->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE VIEW active_users AS SELECT * FROM users
 ```
 
@@ -36,14 +36,14 @@ use function Flow\PostgreSql\DSL\{create, select};
 $query = create()->view('public.active_users')
     ->as(select()->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE VIEW public.active_users AS SELECT * FROM users
 
 // Using separate schema parameter
 $query = create()->view('active_users', 'public')
     ->as(select()->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE VIEW public.active_users AS SELECT * FROM users
 ```
 
@@ -60,7 +60,7 @@ $query = create()->view('active_users')
     ->orReplace()
     ->as(select()->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE OR REPLACE VIEW active_users AS SELECT * FROM users
 ```
 
@@ -77,7 +77,7 @@ $query = create()->view('temp_users')
     ->temporary()
     ->as(select()->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE TEMPORARY VIEW temp_users AS SELECT * FROM users
 ```
 
@@ -95,7 +95,7 @@ $query = create()->view('subordinates')
     ->columns('id', 'name', 'manager_id')
     ->as(select('id', 'name', 'manager_id')->from('employees'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE RECURSIVE VIEW subordinates (id, name, manager_id) AS SELECT id, name, manager_id FROM employees
 ```
 
@@ -112,7 +112,7 @@ $query = create()->view('user_info')
     ->columns('user_id', 'user_name', 'email_address')
     ->as(select('id', 'name', 'email')->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE VIEW user_info (user_id, user_name, email_address) AS SELECT id, name, email FROM users
 ```
 
@@ -130,7 +130,7 @@ $query = create()->view('active_users')
     ->as(select()->from('users')->where(eq(col('active'), literal(true))))
     ->withCheckOption();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE VIEW active_users AS SELECT * FROM users WHERE active = true WITH CHECK OPTION
 
 // WITH CASCADED CHECK OPTION
@@ -138,7 +138,7 @@ $query = create()->view('active_users')
     ->as(select()->from('users'))
     ->withCascadedCheckOption();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE VIEW active_users AS SELECT * FROM users WITH CASCADED CHECK OPTION
 
 // WITH LOCAL CHECK OPTION
@@ -146,7 +146,7 @@ $query = create()->view('active_users')
     ->as(select()->from('users'))
     ->withLocalCheckOption();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE VIEW active_users AS SELECT * FROM users WITH LOCAL CHECK OPTION
 ```
 
@@ -162,7 +162,7 @@ use function Flow\PostgreSql\DSL\{create, select};
 $query = create()->materializedView('user_stats')
     ->as(select()->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE MATERIALIZED VIEW user_stats AS SELECT * FROM users
 ```
 
@@ -177,7 +177,7 @@ $query = create()->materializedView('user_stats')
     ->ifNotExists()
     ->as(select()->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE MATERIALIZED VIEW IF NOT EXISTS user_stats AS SELECT * FROM users
 ```
 
@@ -192,7 +192,7 @@ $query = create()->materializedView('user_stats')
     ->columns('user_id', 'order_count')
     ->as(select('id', 'count(*)')->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE MATERIALIZED VIEW user_stats (user_id, order_count) AS SELECT id, count(*) FROM users
 ```
 
@@ -209,7 +209,7 @@ $query = create()->materializedView('user_stats')
     ->using('heap')
     ->as(select()->from('users'));
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE MATERIALIZED VIEW user_stats USING heap AS SELECT * FROM users
 ```
 
@@ -226,7 +226,7 @@ $query = create()->materializedView('user_stats')
     ->as(select()->from('users'))
     ->tablespace('fast_storage');
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE MATERIALIZED VIEW user_stats TABLESPACE fast_storage AS SELECT * FROM users
 ```
 
@@ -244,7 +244,7 @@ $query = create()->materializedView('user_stats')
     ->as(select()->from('users'))
     ->withData();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE MATERIALIZED VIEW user_stats AS SELECT * FROM users WITH DATA
 
 // Create empty, populate later with REFRESH
@@ -252,7 +252,7 @@ $query = create()->materializedView('user_stats')
     ->as(select()->from('users'))
     ->withNoData();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE MATERIALIZED VIEW user_stats AS SELECT * FROM users WITH NO DATA
 ```
 
@@ -271,7 +271,7 @@ $query = create()->materializedView('analytics.user_stats')
     ->tablespace('analytics_ts')
     ->withNoData();
 
-echo $query->toSQL();
+echo $query->toSql();
 // CREATE MATERIALIZED VIEW IF NOT EXISTS analytics.user_stats (user_id, order_count, total_spent)
 //   USING heap TABLESPACE analytics_ts AS SELECT id, count(*), sum(total) FROM users WITH NO DATA
 ```
@@ -290,7 +290,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->view('old_view')
     ->renameTo('new_view');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER VIEW old_view RENAME TO new_view
 ```
 
@@ -307,7 +307,7 @@ $query = alter()->view('old_view')
     ->ifExists()
     ->renameTo('new_view');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER VIEW IF EXISTS old_view RENAME TO new_view
 ```
 
@@ -323,7 +323,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->view('my_view')
     ->setSchema('archive');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER VIEW my_view SET SCHEMA archive
 ```
 
@@ -339,7 +339,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->view('my_view')
     ->ownerTo('new_owner');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER VIEW my_view OWNER TO new_owner
 ```
 
@@ -355,7 +355,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->materializedView('old_matview')
     ->renameTo('new_matview');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER MATERIALIZED VIEW old_matview RENAME TO new_matview
 ```
 
@@ -370,7 +370,7 @@ $query = alter()->materializedView('old_matview')
     ->ifExists()
     ->renameTo('new_matview');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER MATERIALIZED VIEW IF EXISTS old_matview RENAME TO new_matview
 ```
 
@@ -384,7 +384,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->materializedView('my_matview')
     ->setSchema('archive');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER MATERIALIZED VIEW my_matview SET SCHEMA archive
 ```
 
@@ -398,7 +398,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->materializedView('my_matview')
     ->ownerTo('new_owner');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER MATERIALIZED VIEW my_matview OWNER TO new_owner
 ```
 
@@ -414,7 +414,7 @@ use function Flow\PostgreSql\DSL\alter;
 $query = alter()->materializedView('my_matview')
     ->setTablespace('fast_storage');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER MATERIALIZED VIEW my_matview SET TABLESPACE fast_storage
 
 // With IF EXISTS
@@ -422,7 +422,7 @@ $query = alter()->materializedView('my_matview')
     ->ifExists()
     ->setTablespace('fast_storage');
 
-echo $query->toSQL();
+echo $query->toSql();
 // ALTER MATERIALIZED VIEW IF EXISTS my_matview SET TABLESPACE fast_storage
 ```
 
@@ -437,7 +437,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->view('active_users');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP VIEW active_users
 ```
 
@@ -450,7 +450,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->view('view1', 'view2', 'view3');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP VIEW view1, view2, view3
 ```
 
@@ -464,7 +464,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->view('active_users')
     ->ifExists();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP VIEW IF EXISTS active_users
 ```
 
@@ -480,7 +480,7 @@ use function Flow\PostgreSql\DSL\drop;
 $query = drop()->view('active_users')
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP VIEW active_users CASCADE
 ```
 
@@ -495,7 +495,7 @@ $query = drop()->view('active_users')
     ->ifExists()
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP VIEW IF EXISTS active_users CASCADE
 ```
 
@@ -510,7 +510,7 @@ use function Flow\PostgreSql\DSL\drop;
 
 $query = drop()->materializedView('user_stats');
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP MATERIALIZED VIEW user_stats
 ```
 
@@ -525,7 +525,7 @@ $query = drop()->materializedView('user_stats')
     ->ifExists()
     ->cascade();
 
-echo $query->toSQL();
+echo $query->toSql();
 // DROP MATERIALIZED VIEW IF EXISTS user_stats CASCADE
 ```
 
@@ -542,7 +542,7 @@ use function Flow\PostgreSql\DSL\refresh_materialized_view;
 
 $query = refresh_materialized_view('user_stats');
 
-echo $query->toSQL();
+echo $query->toSql();
 // REFRESH MATERIALIZED VIEW user_stats
 ```
 
@@ -555,7 +555,7 @@ use function Flow\PostgreSql\DSL\refresh_materialized_view;
 
 $query = refresh_materialized_view('analytics.user_stats');
 
-echo $query->toSQL();
+echo $query->toSql();
 // REFRESH MATERIALIZED VIEW analytics.user_stats
 ```
 
@@ -571,7 +571,7 @@ use function Flow\PostgreSql\DSL\refresh_materialized_view;
 $query = refresh_materialized_view('user_stats')
     ->concurrently();
 
-echo $query->toSQL();
+echo $query->toSql();
 // REFRESH MATERIALIZED VIEW CONCURRENTLY user_stats
 ```
 
@@ -586,14 +586,14 @@ use function Flow\PostgreSql\DSL\refresh_materialized_view;
 $query = refresh_materialized_view('user_stats')
     ->withData();
 
-echo $query->toSQL();
+echo $query->toSql();
 // REFRESH MATERIALIZED VIEW user_stats WITH DATA
 
 // Empty the view
 $query = refresh_materialized_view('user_stats')
     ->withNoData();
 
-echo $query->toSQL();
+echo $query->toSql();
 // REFRESH MATERIALIZED VIEW user_stats WITH NO DATA
 ```
 
@@ -608,7 +608,7 @@ $query = refresh_materialized_view('user_stats')
     ->concurrently()
     ->withData();
 
-echo $query->toSQL();
+echo $query->toSql();
 // REFRESH MATERIALIZED VIEW CONCURRENTLY user_stats WITH DATA
 ```
 
diff --git a/documentation/installation/packages/symfony-postgresql-bundle.md b/documentation/installation/packages/symfony-postgresql-bundle.md
new file mode 100644
index 0000000000..ed9f7c274e
--- /dev/null
+++ b/documentation/installation/packages/symfony-postgresql-bundle.md
@@ -0,0 +1,39 @@
+---
+seo_title: "Installing Symfony PostgreSQL Bundle"
+seo_description: >
+  How to install flow-php/symfony-postgresql-bundle in your PHP project using Composer.
+---
+
+# Symfony PostgreSQL Bundle
+
+- [Back](/documentation/installation.md)
+- [Documentation](/documentation/components/bridges/symfony-postgresql-bundle.md)
+- [Packagist](https://packagist.org/packages/flow-php/symfony-postgresql-bundle)
+
+[TOC]
+
+## Composer
+
+```bash
+composer require flow-php/symfony-postgresql-bundle:~--FLOW_PHP_VERSION--
+```
+
+## Core Dependencies
+
+- [flow-php/postgresql](/documentation/installation/packages/postgresql.md)
+- [flow-php/filesystem](/documentation/installation/packages/filesystem.md)
+- [symfony/config](https://packagist.org/packages/symfony/config)
+- [symfony/console](https://packagist.org/packages/symfony/console)
+- [symfony/dependency-injection](https://packagist.org/packages/symfony/dependency-injection)
+- [symfony/http-kernel](https://packagist.org/packages/symfony/http-kernel)
+- [twig/twig](https://packagist.org/packages/twig/twig)
+
+## Recommended Extensions
+
+- `ext-pgsql` — required for database connections and query execution
+- [`ext-pg_query`](/documentation/components/extensions/pg-query-ext.md) — required for schema diffing (`migrations:diff`), SQL parsing and AST manipulation
+- `ext-protobuf` — significantly faster protobuf deserialization for `ext-pg_query` AST parsing (without it, the slower userland `google/protobuf` package is used)
+
+## Suggested Dependencies
+
+- [flow-php/symfony-telemetry-bundle](/documentation/installation/packages/symfony-telemetry-bundle.md) — for telemetry integration (distributed tracing, metrics, logging)
diff --git a/documentation/installation/packages/symfony-telemetry-bundle.md b/documentation/installation/packages/symfony-telemetry-bundle.md
index 01fdb52de2..1d473bca48 100644
--- a/documentation/installation/packages/symfony-telemetry-bundle.md
+++ b/documentation/installation/packages/symfony-telemetry-bundle.md
@@ -20,6 +20,8 @@ composer require flow-php/symfony-telemetry-bundle:~--FLOW_PHP_VERSION--
 
 ## Core Dependencies
 
+- [flow-php/telemetry](/documentation/installation/packages/telemetry.md)
+- [flow-php/symfony-http-foundation-telemetry-bridge](/documentation/installation/packages/symfony-http-foundation-telemetry-bridge.md)
 - [symfony/config](https://packagist.org/packages/symfony/config)
 - [symfony/console](https://packagist.org/packages/symfony/console)
 - [symfony/dependency-injection](https://packagist.org/packages/symfony/dependency-injection)
@@ -27,19 +29,12 @@ composer require flow-php/symfony-telemetry-bundle:~--FLOW_PHP_VERSION--
 
 ## Suggested Dependencies
 
-```bash
-# For Doctrine DBAL tracing
-composer require doctrine/dbal
-
-# For PSR-18 HTTP client tracing
-composer require flow-php/psr18-telemetry-bridge:~--FLOW_PHP_VERSION--
+- [flow-php/symfony-postgresql-bundle](/documentation/installation/packages/symfony-postgresql-bundle.md) — for PostgreSQL database management and migrations with telemetry support
+- [flow-php/psr18-telemetry-bridge](/documentation/installation/packages/psr18-telemetry-bridge.md) — for PSR-18 HTTP client tracing
+- [flow-php/telemetry-otlp-bridge](/documentation/installation/packages/telemetry-otlp-bridge.md) — for OTLP exporter support
+- [symfony/messenger](https://packagist.org/packages/symfony/messenger) — for Messenger tracing middleware
+- [twig/twig](https://packagist.org/packages/twig/twig) — for Twig template tracing
 
-# For OTLP exporter support
-composer require flow-php/telemetry-otlp-bridge:~--FLOW_PHP_VERSION--
+## Optional Dependencies
 
-# For Messenger tracing middleware
-composer require symfony/messenger
-
-# For Twig template tracing
-composer require twig/twig
-```
+- [doctrine/dbal](https://packagist.org/packages/doctrine/dbal) — for Doctrine DBAL tracing
diff --git a/documentation/upgrading.md b/documentation/upgrading.md
index f2b395b3c7..6312d01a12 100644
--- a/documentation/upgrading.md
+++ b/documentation/upgrading.md
@@ -7,6 +7,252 @@ Please follow the instructions for your specific version to ensure a smooth upgr
 
 ---
 
+## Upgrading from 0.35.x to 0.36.x
+
+### 1) PostgreSQL Library: `RawCondition` and `RawExpression` removed
+
+The `raw_cond()` and `raw_expr()` escape hatches have been removed. All query builder operations are now covered by
+type-safe DSL functions.
+
+| Removed                               | Replacement                                                               |
+|---------------------------------------|---------------------------------------------------------------------------|
+| `raw_cond('NOT col')`                 | `not_(is_true(col('col')))`                                               |
+| `raw_cond('a = ANY(b)')`              | `any_(col('a'), ComparisonOperator::EQ, col('b'))`                        |
+| `raw_cond("x IN ('a', 'b')")`         | `in_(col('x'), [literal('a'), literal('b')])`                             |
+| `raw_cond("x NOT LIKE 'pg_%'")`       | `not_like(col('x'), literal('pg_%'))`                                     |
+| `raw_expr('NOT col')`                 | `not_(col('col'))`                                                        |
+| `raw_expr('a \|\| b')`                | `concat(col('a'), col('b'))` or `binary_expr(col('a'), '\|\|', col('b'))` |
+| `raw_expr('CASE x WHEN ...')`         | `case_when([when(...)], operand: col('x'))`                               |
+| `raw_expr('array_agg(DISTINCT ...)')` | `agg('array_agg', [...], distinct: true)->withOrderBy(...)`               |
+| `RawCondition` class                  | Use specific condition classes                                            |
+| `RawExpression` class                 | Use specific expression classes                                           |
+
+### 2) PostgreSQL Library: `Condition` now extends `Expression`
+
+Conditions are now expressions — they can be used in SELECT lists, CASE WHEN, ORDER BY, etc.
+
+```php
+// Conditions can now be aliased and used as expressions:
+select(eq(col('a'), col('b'))->as('is_equal'));
+
+// NOT works in both WHERE and SELECT:
+not_(col('is_deleted'))->as('is_active');
+
+// CASE WHEN accepts conditions directly:
+case_when([when(eq(col('x'), literal(0)), literal('zero'))]);
+```
+
+### 3) PostgreSQL Library: DSL condition function renames
+
+Function names have been unified following standard SQL builder conventions (jOOQ, Diesel, SQLAlchemy).
+
+| Removed              | Replacement               | Reason                                                    |
+|----------------------|---------------------------|-----------------------------------------------------------|
+| `neq()`              | `ne()`                    | Standard short form                                       |
+| `lte()`              | `le()`                    | Standard short form                                       |
+| `gte()`              | `ge()`                    | Standard short form                                       |
+| `is_in()`            | `in_()`                   | Drop `is_` prefix, trailing underscore for PHP keyword    |
+| `is_distinct_from()` | `distinct_from()`         | Drop `is_` prefix                                         |
+| `cond_and()`         | `and_()`                  | Drop `cond_` prefix, trailing underscore for PHP keyword  |
+| `cond_or()`          | `or_()`                   | Drop `cond_` prefix, trailing underscore for PHP keyword  |
+| `cond_not()`         | `not_()`                  | Drop `cond_` prefix, trailing underscore for PHP keyword  |
+| `any_sub_select()`   | `any_()`                  | Unified — accepts both `Expression` and `SelectFinalStep` |
+| `all_sub_select()`   | `all_()`                  | Unified — accepts both `Expression` and `SelectFinalStep` |
+| `cond_true()`        | `is_true(literal(true))`  | Use `is_true()` with literal                              |
+| `cond_false()`       | `is_true(literal(false))` | Use `is_true()` with literal                              |
+| `bool_cond()`        | `is_true()`               | Wraps expression as boolean condition                     |
+| `any_array()`        | `any_()`                  | Merged into unified `any_()`                              |
+| `all_array()`        | `all_()`                  | Merged into unified `all_()`                              |
+
+New functions added:
+
+| Function                           | Purpose                                        |
+|------------------------------------|------------------------------------------------|
+| `is_true(Expression)`              | Wrap expression as boolean condition for WHERE |
+| `not_like(Expression, Expression)` | NOT LIKE condition                             |
+| `concat(Expression, ...)`          | String concatenation with `\|\|` operator      |
+
+Before:
+
+```php
+use function Flow\PostgreSql\DSL\{cond_and, cond_not, cond_true, neq, lte, gte, is_in, any_sub_select};
+
+select(col('name'))
+    ->where(cond_and(
+        neq(col('status'), literal('deleted')),
+        lte(col('age'), literal(65)),
+        gte(col('age'), literal(18)),
+        is_in(col('role'), [literal('admin'), literal('user')]),
+    ));
+```
+
+After:
+
+```php
+use function Flow\PostgreSql\DSL\{and_, ne, le, ge, in_};
+
+select(col('name'))
+    ->where(and_(
+        ne(col('status'), literal('deleted')),
+        le(col('age'), literal(65)),
+        ge(col('age'), literal(18)),
+        in_(col('role'), [literal('admin'), literal('user')]),
+    ));
+```
+
+### 4) PostgreSQL Library: Schema builder methods accept `Expression`/`Condition` instead of strings
+
+Methods that previously accepted raw SQL strings now require typed `Expression` or `Condition` objects.
+
+| Method                                       | Before (string)                           | After (typed)                                           |
+|----------------------------------------------|-------------------------------------------|---------------------------------------------------------|
+| `ColumnDefinition::check()`                  | `->check('age > 0')`                      | `->check(gt(col('age'), literal(0)))`                   |
+| `ColumnDefinition::defaultRaw()`             | `->defaultRaw('CURRENT_TIMESTAMP')`       | `->defaultRaw(current_timestamp())`                     |
+| `ColumnDefinition::generatedAs()`            | `->generatedAs("a \|\| b")`               | `->generatedAs(concat(col('a'), col('b')))`             |
+| `CheckConstraint::create()`                  | `::create('age > 0')`                     | `::create(gt(col('age'), literal(0)))`                  |
+| `ExcludeConstraint::element()`               | `->element('col', '=')`                   | `->element(col('col'), '=')`                            |
+| `ExcludeConstraint::where()`                 | `->where('active = true')`                | `->where(eq(col('active'), literal(true)))`             |
+| `CreateDomainBuilder::check()`               | `->check('VALUE > 0')`                    | `->check(gt(col('VALUE'), literal(0)))`                 |
+| `CreateDomainBuilder::default()`             | `->default("'text'")`                     | `->default(literal('text'))`                            |
+| `AlterDomainBuilder::addConstraint()`        | `->addConstraint('name', 'VALUE > 0')`    | `->addConstraint('name', gt(col('VALUE'), literal(0)))` |
+| `AlterDomainBuilder::setDefault()`           | `->setDefault('100')`                     | `->setDefault(literal(100))`                            |
+| `AlterTableBuilder::alterColumnSetDefault()` | `->alterColumnSetDefault('col', "'val'")` | `->alterColumnSetDefault('col', literal('val'))`        |
+| `CreateRuleBuilder::where()`                 | `->where("OLD.role = 'admin'")`           | `->where(eq(col('role', 'OLD'), literal('admin')))`     |
+
+### 5) PostgreSQL Library: DSL functions split into separate files
+
+The monolithic `functions.php` has been split into 5 focused files (same namespace, no import changes needed):
+
+| File            | Purpose                                                                                    |
+|-----------------|--------------------------------------------------------------------------------------------|
+| `query.php`     | Query building, expressions, tables, ordering, CTE, window, locking, transactions, cursors |
+| `condition.php` | Comparisons, predicates, logic, JSON/array/regex operators                                 |
+| `schema.php`    | DDL, constraints, indexes, maintenance, privileges, types, schema definitions              |
+| `client.php`    | Connections, telemetry, mappers                                                            |
+| `parser.php`    | SQL parsing, formatting, analysis                                                          |
+
+---
+
+## Upgrading from 0.34.x to 0.35.x
+
+### 1) PostgreSQL Library: `DataType` renamed to `ColumnType`
+
+The `DataType` class used for schema/DDL definitions has been renamed to `ColumnType` to better communicate its purpose.
+All related DSL functions have been renamed from `data_type_*` to `column_type_*`.
+
+| Removed                                        | Replacement                                      |
+|------------------------------------------------|--------------------------------------------------|
+| `Flow\PostgreSql\QueryBuilder\Schema\DataType` | `Flow\PostgreSql\QueryBuilder\Schema\ColumnType` |
+| `Flow\PostgreSql\Parser\DataTypeParser`        | `Flow\PostgreSql\Parser\ColumnTypeParser`        |
+| `data_type_integer()`                          | `column_type_integer()`                          |
+| `data_type_smallint()`                         | `column_type_smallint()`                         |
+| `data_type_bigint()`                           | `column_type_bigint()`                           |
+| `data_type_boolean()`                          | `column_type_boolean()`                          |
+| `data_type_text()`                             | `column_type_text()`                             |
+| `data_type_varchar()`                          | `column_type_varchar()`                          |
+| `data_type_char()`                             | `column_type_char()`                             |
+| `data_type_numeric()`                          | `column_type_numeric()`                          |
+| `data_type_decimal()`                          | `column_type_decimal()`                          |
+| `data_type_real()`                             | `column_type_real()`                             |
+| `data_type_double_precision()`                 | `column_type_double_precision()`                 |
+| `data_type_date()`                             | `column_type_date()`                             |
+| `data_type_time()`                             | `column_type_time()`                             |
+| `data_type_timestamp()`                        | `column_type_timestamp()`                        |
+| `data_type_timestamptz()`                      | `column_type_timestamptz()`                      |
+| `data_type_interval()`                         | `column_type_interval()`                         |
+| `data_type_uuid()`                             | `column_type_uuid()`                             |
+| `data_type_json()`                             | `column_type_json()`                             |
+| `data_type_jsonb()`                            | `column_type_jsonb()`                            |
+| `data_type_bytea()`                            | `column_type_bytea()`                            |
+| `data_type_inet()`                             | `column_type_inet()`                             |
+| `data_type_cidr()`                             | `column_type_cidr()`                             |
+| `data_type_macaddr()`                          | `column_type_macaddr()`                          |
+| `data_type_serial()`                           | `column_type_serial()`                           |
+| `data_type_smallserial()`                      | `column_type_smallserial()`                      |
+| `data_type_bigserial()`                        | `column_type_bigserial()`                        |
+| `data_type_array()`                            | `column_type_array()`                            |
+| `data_type_custom()`                           | `column_type_custom()`                           |
+| `data_type_from_string()`                      | `column_type_from_string()`                      |
+
+Before:
+
+```php
+use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use function Flow\PostgreSql\DSL\data_type_integer;
+use function Flow\PostgreSql\DSL\data_type_varchar;
+
+column('age', data_type_integer());
+column('name', data_type_varchar(255));
+cast(ref('id'), DataType::bigint());
+```
+
+After:
+
+```php
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use function Flow\PostgreSql\DSL\column_type_integer;
+use function Flow\PostgreSql\DSL\column_type_varchar;
+
+column('age', column_type_integer());
+column('name', column_type_varchar(255));
+cast(ref('id'), ColumnType::bigint());
+```
+
+### 2) PostgreSQL Library: `PostgreSqlType` renamed to `ValueType`
+
+The `PostgreSqlType` enum used for value binding/casting has been renamed to `ValueType` to better communicate its
+purpose.
+All related DSL functions have been renamed from `pgsql_type_*` to `value_type_*`.
+
+| Removed                                       | Replacement                              |
+|-----------------------------------------------|------------------------------------------|
+| `Flow\PostgreSql\Client\Types\PostgreSqlType` | `Flow\PostgreSql\Client\Types\ValueType` |
+| `pgsql_type_text()`                           | `value_type_text()`                      |
+| `pgsql_type_varchar()`                        | `value_type_varchar()`                   |
+| `pgsql_type_integer()`                        | `value_type_integer()`                   |
+| `pgsql_type_bigint()`                         | `value_type_bigint()`                    |
+| `pgsql_type_smallint()`                       | `value_type_smallint()`                  |
+| `pgsql_type_boolean()`                        | `value_type_boolean()`                   |
+| `pgsql_type_float4()`                         | `value_type_float4()`                    |
+| `pgsql_type_float8()`                         | `value_type_float8()`                    |
+| `pgsql_type_numeric()`                        | `value_type_numeric()`                   |
+| `pgsql_type_date()`                           | `value_type_date()`                      |
+| `pgsql_type_timestamp()`                      | `value_type_timestamp()`                 |
+| `pgsql_type_timestamptz()`                    | `value_type_timestamptz()`               |
+| `pgsql_type_json()`                           | `value_type_json()`                      |
+| `pgsql_type_jsonb()`                          | `value_type_jsonb()`                     |
+| `pgsql_type_uuid()`                           | `value_type_uuid()`                      |
+| `pgsql_type_bytea()`                          | `value_type_bytea()`                     |
+| `pgsql_type_inet()`                           | `value_type_inet()`                      |
+| `pgsql_type_cidr()`                           | `value_type_cidr()`                      |
+| All other `pgsql_type_*()` functions          | Corresponding `value_type_*()` functions |
+
+Before:
+
+```php
+use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\pgsql_type_uuid;
+use function Flow\PostgreSql\DSL\pgsql_type_text_array;
+
+typed('550e8400-e29b-41d4-a716-446655440000', pgsql_type_uuid());
+typed(['tag1', 'tag2'], pgsql_type_text_array());
+typed(42, PostgreSqlType::INT4);
+```
+
+After:
+
+```php
+use Flow\PostgreSql\Client\Types\ValueType;
+use function Flow\PostgreSql\DSL\value_type_uuid;
+use function Flow\PostgreSql\DSL\value_type_text_array;
+
+typed('550e8400-e29b-41d4-a716-446655440000', value_type_uuid());
+typed(['tag1', 'tag2'], value_type_text_array());
+typed(42, ValueType::INT4);
+```
+
+---
+
 ## Upgrading from 0.31.x to 0.32.x
 
 ### 1) Removal of Meilisearch Adapter
diff --git a/manifest.json b/manifest.json
index 9e28a6b9fe..8044641e7e 100644
--- a/manifest.json
+++ b/manifest.json
@@ -181,6 +181,11 @@
       "path": "src/bridge/symfony/http-foundation-telemetry",
       "type": "bridge"
     },
+    {
+      "name": "flow-php/symfony-postgresql-bundle",
+      "path": "src/bridge/symfony/postgresql-bundle",
+      "type": "bridge"
+    },
     {
       "name": "flow-php/symfony-telemetry-bundle",
       "path": "src/bridge/symfony/telemetry-bundle",
diff --git a/phpdoc/bridge.symfony.postgresql-migrations.xml b/phpdoc/bridge.symfony.postgresql-migrations.xml
new file mode 100644
index 0000000000..b87c891e8d
--- /dev/null
+++ b/phpdoc/bridge.symfony.postgresql-migrations.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<phpdocumentor
+        configVersion="3"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xmlns="https://www.phpdoc.org"
+>
+    <title>Flow PHP</title>
+    <paths>
+        <output>./../web/landing/build/documentation/api/bridge/symfony/postgresql-migrations</output>
+        <cache>./../var/phpdocumentor/cache/bridge/symfony/postgresql-migrations</cache>
+    </paths>
+    <version number="1.x">
+        <api format="php">
+            <source dsn="./../">
+                <path>src/bridge/symfony/postgresql-bundle/src</path>
+            </source>
+            <output>postgresql-migrations</output>
+            <default-package-name>Symfony PostgreSQL Migrations Bundle</default-package-name>
+            <visibility>public</visibility>
+            <include-source>false</include-source>
+        </api>
+    </version>
+    <setting name="template.color" value="orange"/>
+</phpdocumentor>
diff --git a/phpdoc/lib.postgresql-migrations.xml b/phpdoc/lib.postgresql-migrations.xml
new file mode 100644
index 0000000000..94f7d1a7b2
--- /dev/null
+++ b/phpdoc/lib.postgresql-migrations.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<phpdocumentor
+        configVersion="3"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xmlns="https://www.phpdoc.org"
+>
+    <title>Flow PHP</title>
+    <paths>
+        <output>./../web/landing/build/documentation/api/lib/postgresql-migrations</output>
+        <cache>./../var/phpdocumentor/cache/lib/postgresql-migrations</cache>
+    </paths>
+    <version number="1.x">
+        <api format="php">
+            <source dsn="./../">
+                <path>src/lib/postgresql/src/Flow/PostgreSql/Migrations</path>
+            </source>
+            <output>postgresql-migrations</output>
+            <default-package-name>PostgreSQL Migrations</default-package-name>
+            <visibility>public</visibility>
+            <include-source>false</include-source>
+        </api>
+    </version>
+    <setting name="template.color" value="orange"/>
+</phpdocumentor>
diff --git a/phpstan.neon b/phpstan.neon
index 2c21601abf..40e51ea7a0 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -31,6 +31,7 @@ parameters:
         - src/bridge/psr18/telemetry/src
         - src/bridge/symfony/http-foundation/src
         - src/bridge/symfony/http-foundation-telemetry/src
+        - src/bridge/symfony/postgresql-bundle/src
         - src/bridge/symfony/telemetry-bundle/src
         - src/bridge/telemetry/otlp/src
         - src/lib/array-dot/src
@@ -71,6 +72,7 @@ parameters:
         - src/bridge/psr18/telemetry/tests
         - src/bridge/symfony/http-foundation/tests
         - src/bridge/symfony/http-foundation-telemetry/tests
+        - src/bridge/symfony/postgresql-bundle/tests
         - src/bridge/symfony/telemetry-bundle/tests
         - src/bridge/telemetry/otlp/tests
         - src/lib/telemetry/tests
@@ -89,6 +91,8 @@ parameters:
         - src/lib/parquet/src/Flow/Parquet/BinaryReader/*
         - src/lib/parquet/src/Flow/Parquet/Dremel/ColumnData/DefinitionConverter.php
         - src/lib/postgresql/src/Flow/PostgreSql/Protobuf/*
+        - src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/config/*
+        - src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/*
         - src/bridge/symfony/telemetry-bundle/src/Flow/Bridge/Symfony/TelemetryBundle/Resources/config/instrumentation/*
         - src/bridge/symfony/telemetry-bundle/tests/Flow/Bridge/Symfony/TelemetryBundle/Tests/Unit/DependencyInjection/ConfigurationTest.php
         - src/bridge/symfony/telemetry-bundle/src/Flow/Bridge/Symfony/TelemetryBundle/Instrumentation/Messenger/TracingMiddleware.php
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 7d5e2869f6..987ba12eb1 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -95,6 +95,12 @@
         <testsuite name="lib-postgresql-integration">
             <directory>src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration</directory>
         </testsuite>
+        <testsuite name="lib-postgresql-migrations-unit">
+            <directory>src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit</directory>
+        </testsuite>
+        <testsuite name="lib-postgresql-migrations-integration">
+            <directory>src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration</directory>
+        </testsuite>
         <testsuite name="bridge-filesystem-azure-unit">
             <directory>src/bridge/filesystem/azure/tests/Flow/Filesystem/Bridge/Azure/Tests/Unit</directory>
         </testsuite>
@@ -143,6 +149,12 @@
         <testsuite name="bridge-symfony-http-foundation-telemetry-integration">
             <directory>src/bridge/symfony/http-foundation-telemetry/tests/Flow/Bridge/Symfony/HttpFoundationTelemetry/Tests/Integration</directory>
         </testsuite>
+        <testsuite name="bridge-symfony-postgresql-bundle-unit">
+            <directory>src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit</directory>
+        </testsuite>
+        <testsuite name="bridge-symfony-postgresql-bundle-integration">
+            <directory>src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration</directory>
+        </testsuite>
         <testsuite name="bridge-symfony-telemetry-bundle-unit">
             <directory>src/bridge/symfony/telemetry-bundle/tests/Flow/Bridge/Symfony/TelemetryBundle/Tests/Unit</directory>
         </testsuite>
diff --git a/shell.nix b/shell.nix
index 269812e782..21b6967d63 100644
--- a/shell.nix
+++ b/shell.nix
@@ -17,7 +17,8 @@ assert (!(with-c && with-pg-query-ext)) || builtins.throw "Cannot use --arg with
 
 let
     nixpkgs = fetchTarball {
-        url = "https://github.com/NixOS/nixpkgs/archive/refs/heads/nixos-25.11.tar.gz";
+        url = "https://github.com/NixOS/nixpkgs/archive/03158cb739fc4a09babe7949900bfc221871d642.tar.gz";
+        sha256 = "0vl4iwqcpbczhzb3xbckjb86brcsxkcz4wcbqzidia2fyhm9llmx";
     };
 
     pkgs = import nixpkgs {
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/EntryTypesMap.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/EntryTypesMap.php
index 75ac52fb28..85bbb1e2a5 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/EntryTypesMap.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/EntryTypesMap.php
@@ -8,7 +8,7 @@
 use Flow\ETL\Row\Entry;
 use Flow\ETL\Row\Entry\{BooleanEntry, DateEntry, DateTimeEntry, EnumEntry, FloatEntry, HTMLElementEntry, HTMLEntry, IntegerEntry, JsonEntry, ListEntry, MapEntry, StringEntry, StructureEntry, TimeEntry, UuidEntry, XMLElementEntry, XMLEntry};
 use Flow\PostgreSql\Client\TypedValue;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 
 /**
  * Maps ETL Entry types to PostgreSQL types.
@@ -23,8 +23,8 @@
  *
  * // Override specific types
  * $map = new EntryTypesMap([
- *     IntegerEntry::class => PostgreSqlType::INT2,
- *     ListEntry::class => PostgreSqlType::TEXT_ARRAY,
+ *     IntegerEntry::class => ValueType::INT2,
+ *     ListEntry::class => ValueType::TEXT_ARRAY,
  * ]);
  * ```
  */
@@ -33,35 +33,35 @@
     /**
      * Default mapping of Entry classes to PostgreSQL types.
      *
-     * @var array<class-string<Entry<mixed>>, PostgreSqlType>
+     * @var array<class-string<Entry<mixed>>, ValueType>
      */
     public const array DEFAULT_TYPES = [
-        StringEntry::class => PostgreSqlType::TEXT,
-        IntegerEntry::class => PostgreSqlType::INT8,
-        FloatEntry::class => PostgreSqlType::FLOAT8,
-        BooleanEntry::class => PostgreSqlType::BOOL,
-        DateEntry::class => PostgreSqlType::DATE,
-        DateTimeEntry::class => PostgreSqlType::TIMESTAMPTZ,
-        TimeEntry::class => PostgreSqlType::TIME,
-        UuidEntry::class => PostgreSqlType::UUID,
-        JsonEntry::class => PostgreSqlType::JSONB,
-        XMLEntry::class => PostgreSqlType::XML,
-        XMLElementEntry::class => PostgreSqlType::XML,
-        HTMLEntry::class => PostgreSqlType::TEXT,
-        HTMLElementEntry::class => PostgreSqlType::TEXT,
-        EnumEntry::class => PostgreSqlType::TEXT,
-        ListEntry::class => PostgreSqlType::JSONB,
-        MapEntry::class => PostgreSqlType::JSONB,
-        StructureEntry::class => PostgreSqlType::JSONB,
+        StringEntry::class => ValueType::TEXT,
+        IntegerEntry::class => ValueType::INT8,
+        FloatEntry::class => ValueType::FLOAT8,
+        BooleanEntry::class => ValueType::BOOL,
+        DateEntry::class => ValueType::DATE,
+        DateTimeEntry::class => ValueType::TIMESTAMPTZ,
+        TimeEntry::class => ValueType::TIME,
+        UuidEntry::class => ValueType::UUID,
+        JsonEntry::class => ValueType::JSONB,
+        XMLEntry::class => ValueType::XML,
+        XMLElementEntry::class => ValueType::XML,
+        HTMLEntry::class => ValueType::TEXT,
+        HTMLElementEntry::class => ValueType::TEXT,
+        EnumEntry::class => ValueType::TEXT,
+        ListEntry::class => ValueType::JSONB,
+        MapEntry::class => ValueType::JSONB,
+        StructureEntry::class => ValueType::JSONB,
     ];
 
     /**
-     * @var array<class-string<Entry<mixed>>, PostgreSqlType>
+     * @var array<class-string<Entry<mixed>>, ValueType>
      */
     private array $typeMap;
 
     /**
-     * @param array<class-string<Entry<mixed>>, PostgreSqlType> $overrides Entry class to PostgreSqlType mappings that override defaults
+     * @param array<class-string<Entry<mixed>>, ValueType> $overrides Entry class to ValueType mappings that override defaults
      */
     public function __construct(array $overrides = [])
     {
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlCursorExtractor.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlCursorExtractor.php
index bf23502103..943782a346 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlCursorExtractor.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlCursorExtractor.php
@@ -10,7 +10,7 @@
 use Flow\ETL\Extractor\Signal;
 use Flow\ETL\{Extractor, FlowContext, Schema};
 use Flow\PostgreSql\Client\Client;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 /**
  * PostgreSQL extractor using server-side cursors for memory-efficient extraction.
@@ -36,7 +36,7 @@ final class PostgreSqlCursorExtractor implements Extractor
      */
     public function __construct(
         private readonly Client $client,
-        private readonly string|SqlQuery $query,
+        private readonly string|Sql $query,
         private readonly array $parameters = [],
     ) {
     }
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlKeySetExtractor.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlKeySetExtractor.php
index a3198d7bf6..304e536018 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlKeySetExtractor.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlKeySetExtractor.php
@@ -11,7 +11,7 @@
 use Flow\ETL\Extractor\Signal;
 use Flow\ETL\{Extractor, FlowContext, Schema};
 use Flow\PostgreSql\Client\Client;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 final class PostgreSqlKeySetExtractor implements Extractor
 {
@@ -26,7 +26,7 @@ final class PostgreSqlKeySetExtractor implements Extractor
      */
     public function __construct(
         private readonly Client $client,
-        private readonly string|SqlQuery $query,
+        private readonly string|Sql $query,
         private readonly KeySet $keySet,
         private readonly array $parameters = [],
     ) {
@@ -35,7 +35,7 @@ public function __construct(
     public function extract(FlowContext $context) : \Generator
     {
         $uri = 'postgresql://keyset';
-        $sql = $this->query instanceof SqlQuery ? $this->query->toSql() : $this->query;
+        $sql = $this->query instanceof Sql ? $this->query->toSql() : $this->query;
 
         $totalFetched = 0;
         $cursorValues = null;
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlLimitOffsetExtractor.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlLimitOffsetExtractor.php
index 6a75dc5613..22422853b8 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlLimitOffsetExtractor.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/PostgreSqlLimitOffsetExtractor.php
@@ -10,7 +10,7 @@
 use Flow\ETL\Extractor\Signal;
 use Flow\ETL\{Extractor, FlowContext, Schema};
 use Flow\PostgreSql\Client\Client;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 final class PostgreSqlLimitOffsetExtractor implements Extractor
 {
@@ -25,7 +25,7 @@ final class PostgreSqlLimitOffsetExtractor implements Extractor
      */
     public function __construct(
         private readonly Client $client,
-        private readonly string|SqlQuery $query,
+        private readonly string|Sql $query,
         private readonly array $parameters = [],
     ) {
     }
@@ -33,7 +33,7 @@ public function __construct(
     public function extract(FlowContext $context) : \Generator
     {
         $uri = 'postgresql://limit-offset';
-        $sql = $this->query instanceof SqlQuery ? $this->query->toSql() : $this->query;
+        $sql = $this->query instanceof Sql ? $this->query->toSql() : $this->query;
 
         if (!sql_query_order_by(sql_parse($sql))->hasOrderBy()) {
             throw new InvalidArgumentException(
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/DeleteQueryBuilder.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/DeleteQueryBuilder.php
index 805762450e..7050c42770 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/DeleteQueryBuilder.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/DeleteQueryBuilder.php
@@ -4,12 +4,12 @@
 
 namespace Flow\ETL\Adapter\PostgreSql\QueryBuilder;
 
-use function Flow\PostgreSql\DSL\{col, cond_and, delete, eq, param};
+use function Flow\PostgreSql\DSL\{and_, col, delete, eq, param};
 use Flow\ETL\Adapter\PostgreSql\{EntryTypesMap, LoaderOptions\DeleteOptions};
 use Flow\ETL\Adapter\PostgreSql\Exception\RuntimeException;
 use Flow\ETL\{Row, Row\Entry};
 use Flow\PostgreSql\Client\TypedValue;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 final readonly class DeleteQueryBuilder
 {
@@ -20,7 +20,7 @@ public function __construct(
     }
 
     /**
-     * @return array{SqlQuery, list<null|TypedValue>}
+     * @return array{Sql, list<null|TypedValue>}
      */
     public function build(Row $row, DeleteOptions $options) : array
     {
@@ -48,7 +48,7 @@ public function build(Row $row, DeleteOptions $options) : array
             $params[] = $this->mapEntryToParameter($entry);
         }
 
-        $query = delete()->from($this->table)->where(cond_and(...$conditions));
+        $query = delete()->from($this->table)->where(and_(...$conditions));
 
         return [$query, $params];
     }
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/InsertQueryBuilder.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/InsertQueryBuilder.php
index 3cfe6880b7..4fbeb908a0 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/InsertQueryBuilder.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/InsertQueryBuilder.php
@@ -9,7 +9,7 @@
 use Flow\ETL\{Row\Entry, Rows};
 use Flow\PostgreSql\Client\TypedValue;
 use Flow\PostgreSql\QueryBuilder\Insert\BulkInsert;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 final readonly class InsertQueryBuilder
 {
@@ -20,7 +20,7 @@ public function __construct(
     }
 
     /**
-     * @return array{SqlQuery, list<null|TypedValue>}
+     * @return array{Sql, list<null|TypedValue>}
      */
     public function build(Rows $rows, ?InsertOptions $options = null) : array
     {
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/UpdateQueryBuilder.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/UpdateQueryBuilder.php
index c7a47d7c68..496a1dec29 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/UpdateQueryBuilder.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/QueryBuilder/UpdateQueryBuilder.php
@@ -4,12 +4,12 @@
 
 namespace Flow\ETL\Adapter\PostgreSql\QueryBuilder;
 
-use function Flow\PostgreSql\DSL\{col, cond_and, eq, param, update};
+use function Flow\PostgreSql\DSL\{and_, col, eq, param, update};
 use Flow\ETL\Adapter\PostgreSql\{EntryTypesMap, LoaderOptions\UpdateOptions};
 use Flow\ETL\Adapter\PostgreSql\Exception\RuntimeException;
 use Flow\ETL\{Row, Row\Entry};
 use Flow\PostgreSql\Client\TypedValue;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 final readonly class UpdateQueryBuilder
 {
@@ -20,7 +20,7 @@ public function __construct(
     }
 
     /**
-     * @return array{null|SqlQuery, list<null|TypedValue>}
+     * @return array{null|Sql, list<null|TypedValue>}
      */
     public function build(Row $row, UpdateOptions $options) : array
     {
@@ -66,7 +66,7 @@ public function build(Row $row, UpdateOptions $options) : array
         $query = update()
             ->update($this->table)
             ->setAll($assignments)
-            ->where(cond_and(...$conditions));
+            ->where(and_(...$conditions));
 
         return [$query, $params];
     }
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/EnumConverter.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/EnumConverter.php
index 711a448e3f..6f72e8ef8a 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/EnumConverter.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/EnumConverter.php
@@ -4,7 +4,7 @@
 
 namespace Flow\ETL\Adapter\PostgreSql\ValueConverter;
 
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final readonly class EnumConverter implements ValueConverter
 {
@@ -15,7 +15,7 @@ public function __construct(
 
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::TEXT];
+        return [ValueType::TEXT];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/HTMLConverter.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/HTMLConverter.php
index 48ce7996d2..3eb49050b5 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/HTMLConverter.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/HTMLConverter.php
@@ -6,7 +6,7 @@
 
 use Dom\{HTMLDocument, HTMLElement};
 use Flow\PostgreSql\Client\Types\Converter\StringConverter;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final readonly class HTMLConverter implements ValueConverter
 {
@@ -17,7 +17,7 @@ public function __construct(
 
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::TEXT];
+        return [ValueType::TEXT];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/XMLConverter.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/XMLConverter.php
index 13fb2e43a6..4b9d7fd9ec 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/XMLConverter.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/ValueConverter/XMLConverter.php
@@ -5,7 +5,7 @@
 namespace Flow\ETL\Adapter\PostgreSql\ValueConverter;
 
 use Flow\PostgreSql\Client\Types\Converter\StringConverter;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final readonly class XMLConverter implements ValueConverter
 {
@@ -16,7 +16,7 @@ public function __construct(
 
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::XML];
+        return [ValueType::XML];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/functions.php b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/functions.php
index 4fc87d86db..fe0de12370 100644
--- a/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/functions.php
+++ b/src/adapter/etl-adapter-postgresql/src/Flow/ETL/Adapter/PostgreSql/functions.php
@@ -8,7 +8,7 @@
 use Flow\ETL\Adapter\PostgreSql\Pagination\{Key, KeySet, Order};
 use Flow\ETL\{Attribute\DocumentationDSL, Attribute\Module, Attribute\Type as DSLType};
 use Flow\PostgreSql\Client\Client;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 /**
  * Create a PostgreSQL cursor extractor using server-side cursors for memory-efficient extraction.
@@ -19,13 +19,13 @@
  * Note: Requires a transaction context (auto-started if not in one).
  *
  * @param Client $client PostgreSQL client
- * @param SqlQuery|string $query SQL query to execute (wrapped in DECLARE CURSOR)
+ * @param Sql|string $query SQL query to execute (wrapped in DECLARE CURSOR)
  * @param array<int, mixed> $parameters Positional parameters for the query
  */
 #[DocumentationDSL(module: Module::POSTGRESQL, type: DSLType::EXTRACTOR)]
 function from_pgsql_cursor(
     Client $client,
-    string|SqlQuery $query,
+    string|Sql $query,
     array $parameters = [],
 ) : PostgreSqlCursorExtractor {
     return new PostgreSqlCursorExtractor($client, $query, $parameters);
@@ -38,13 +38,13 @@ function from_pgsql_cursor(
  * (from_pgsql_key_set) which is more efficient.
  *
  * @param Client $client PostgreSQL client
- * @param SqlQuery|string $query SQL query to execute (must have ORDER BY clause)
+ * @param Sql|string $query SQL query to execute (must have ORDER BY clause)
  * @param array<int, mixed> $parameters Positional parameters for the query
  */
 #[DocumentationDSL(module: Module::POSTGRESQL, type: DSLType::EXTRACTOR)]
 function from_pgsql_limit_offset(
     Client $client,
-    string|SqlQuery $query,
+    string|Sql $query,
     array $parameters = [],
 ) : PostgreSqlLimitOffsetExtractor {
     return new PostgreSqlLimitOffsetExtractor($client, $query, $parameters);
@@ -57,14 +57,14 @@ function from_pgsql_limit_offset(
  * instead of skipping rows.
  *
  * @param Client $client PostgreSQL client
- * @param SqlQuery|string $query SQL query to execute (must have ORDER BY matching keyset columns)
+ * @param Sql|string $query SQL query to execute (must have ORDER BY matching keyset columns)
  * @param KeySet $keySet Columns to use for keyset pagination
  * @param array<int, mixed> $parameters Positional parameters for the query
  */
 #[DocumentationDSL(module: Module::POSTGRESQL, type: DSLType::EXTRACTOR)]
 function from_pgsql_key_set(
     Client $client,
-    string|SqlQuery $query,
+    string|Sql $query,
     KeySet $keySet,
     array $parameters = [],
 ) : PostgreSqlKeySetExtractor {
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlCursorExtractorIntegrationTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlCursorExtractorIntegrationTest.php
index 314aeb795f..b6cd5cd66b 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlCursorExtractorIntegrationTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlCursorExtractorIntegrationTest.php
@@ -6,7 +6,7 @@
 
 use function Flow\ETL\Adapter\PostgreSql\from_pgsql_cursor;
 use function Flow\ETL\DSL\df;
-use function Flow\PostgreSql\DSL\{asc, col, column, create, data_type_integer, data_type_text, delete, drop, insert, literal, select, star, table};
+use function Flow\PostgreSql\DSL\{asc, col, column, column_type_integer, column_type_text, create, delete, drop, insert, literal, select, star, table};
 use Flow\ETL\Adapter\PostgreSql\Tests\IntegrationTestCase;
 
 final class PostgreSqlCursorExtractorIntegrationTest extends IntegrationTestCase
@@ -23,8 +23,8 @@ protected function setUp() : void
 
         $this->client->execute(
             create()->table($this->tableName)
-                ->column(column('id', data_type_integer())->primaryKey())
-                ->column(column('name', data_type_text()))
+                ->column(column('id', column_type_integer())->primaryKey())
+                ->column(column('name', column_type_text()))
         );
 
         $this->insertTestData(25);
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlKeySetExtractorIntegrationTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlKeySetExtractorIntegrationTest.php
index f4e5da33a2..6527f85d20 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlKeySetExtractorIntegrationTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlKeySetExtractorIntegrationTest.php
@@ -6,7 +6,7 @@
 
 use function Flow\ETL\Adapter\PostgreSql\{from_pgsql_key_set, pgsql_pagination_key_asc, pgsql_pagination_key_desc, pgsql_pagination_key_set};
 use function Flow\ETL\DSL\df;
-use function Flow\PostgreSql\DSL\{col, column, create, data_type_integer, data_type_text, delete, drop, insert, literal, select, star, table};
+use function Flow\PostgreSql\DSL\{col, column, column_type_integer, column_type_text, create, delete, drop, insert, literal, select, star, table};
 use Flow\ETL\Adapter\PostgreSql\Tests\IntegrationTestCase;
 
 final class PostgreSqlKeySetExtractorIntegrationTest extends IntegrationTestCase
@@ -23,8 +23,8 @@ protected function setUp() : void
 
         $this->client->execute(
             create()->table($this->tableName)
-                ->column(column('id', data_type_integer())->primaryKey())
-                ->column(column('name', data_type_text()))
+                ->column(column('id', column_type_integer())->primaryKey())
+                ->column(column('name', column_type_text()))
         );
 
         $this->insertTestData(25);
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLimitOffsetExtractorIntegrationTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLimitOffsetExtractorIntegrationTest.php
index 937cbe0be6..d0cccf85f9 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLimitOffsetExtractorIntegrationTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLimitOffsetExtractorIntegrationTest.php
@@ -6,7 +6,7 @@
 
 use function Flow\ETL\Adapter\PostgreSql\from_pgsql_limit_offset;
 use function Flow\ETL\DSL\df;
-use function Flow\PostgreSql\DSL\{asc, col, column, create, data_type_integer, data_type_text, delete, drop, insert, literal, select, star, table};
+use function Flow\PostgreSql\DSL\{asc, col, column, column_type_integer, column_type_text, create, delete, drop, insert, literal, select, star, table};
 use Flow\ETL\Adapter\PostgreSql\Tests\IntegrationTestCase;
 
 final class PostgreSqlLimitOffsetExtractorIntegrationTest extends IntegrationTestCase
@@ -23,8 +23,8 @@ protected function setUp() : void
 
         $this->client->execute(
             create()->table($this->tableName)
-                ->column(column('id', data_type_integer())->primaryKey())
-                ->column(column('name', data_type_text()))
+                ->column(column('id', column_type_integer())->primaryKey())
+                ->column(column('name', column_type_text()))
         );
 
         $this->insertTestData(25);
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLoaderAllTypesIntegrationTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLoaderAllTypesIntegrationTest.php
index 9a02361b0a..c44649024c 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLoaderAllTypesIntegrationTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLoaderAllTypesIntegrationTest.php
@@ -6,7 +6,7 @@
 
 use function Flow\ETL\Adapter\PostgreSql\{from_pgsql_limit_offset, to_pgsql_table};
 use function Flow\ETL\DSL\{bool_entry, date_entry, datetime_entry, df, enum_entry, float_entry, from_rows, int_entry, json_entry, list_entry, map_entry, row, rows, str_entry, structure_entry, time_entry, uuid_entry, xml_element_entry, xml_entry};
-use function Flow\PostgreSql\DSL\{asc, col, column, create, data_type_bigint, data_type_boolean, data_type_custom, data_type_date, data_type_double_precision, data_type_jsonb, data_type_serial, data_type_text, data_type_time, data_type_timestamptz, data_type_uuid, drop, select, star, table};
+use function Flow\PostgreSql\DSL\{asc, col, column, column_type_bigint, column_type_boolean, column_type_custom, column_type_date, column_type_double_precision, column_type_jsonb, column_type_serial, column_type_text, column_type_time, column_type_timestamptz, column_type_uuid, create, drop, select, star, table};
 use function Flow\Types\DSL\{type_integer, type_list, type_map, type_string, type_structure};
 use Flow\ETL\Adapter\PostgreSql\Tests\Fixtures\Enum\BackedStringEnum;
 use Flow\ETL\Adapter\PostgreSql\Tests\IntegrationTestCase;
@@ -25,24 +25,24 @@ protected function setUp() : void
 
         $this->client->execute(
             create()->table($this->tableName)
-                ->column(column('id', data_type_serial())->primaryKey())
-                ->column(column('col_string', data_type_text()))
-                ->column(column('col_integer', data_type_bigint()))
-                ->column(column('col_float', data_type_double_precision()))
-                ->column(column('col_boolean', data_type_boolean()))
-                ->column(column('col_date', data_type_date()))
-                ->column(column('col_datetime', data_type_timestamptz()))
-                ->column(column('col_time', data_type_time()))
-                ->column(column('col_uuid', data_type_uuid()))
-                ->column(column('col_json', data_type_jsonb()))
-                ->column(column('col_xml', data_type_custom('xml')))
-                ->column(column('col_xml_element', data_type_custom('xml')))
-                ->column(column('col_html', data_type_text()))
-                ->column(column('col_html_element', data_type_text()))
-                ->column(column('col_enum', data_type_text()))
-                ->column(column('col_list', data_type_jsonb()))
-                ->column(column('col_map', data_type_jsonb()))
-                ->column(column('col_structure', data_type_jsonb()))
+                ->column(column('id', column_type_serial())->primaryKey())
+                ->column(column('col_string', column_type_text()))
+                ->column(column('col_integer', column_type_bigint()))
+                ->column(column('col_float', column_type_double_precision()))
+                ->column(column('col_boolean', column_type_boolean()))
+                ->column(column('col_date', column_type_date()))
+                ->column(column('col_datetime', column_type_timestamptz()))
+                ->column(column('col_time', column_type_time()))
+                ->column(column('col_uuid', column_type_uuid()))
+                ->column(column('col_json', column_type_jsonb()))
+                ->column(column('col_xml', column_type_custom('xml')))
+                ->column(column('col_xml_element', column_type_custom('xml')))
+                ->column(column('col_html', column_type_text()))
+                ->column(column('col_html_element', column_type_text()))
+                ->column(column('col_enum', column_type_text()))
+                ->column(column('col_list', column_type_jsonb()))
+                ->column(column('col_map', column_type_jsonb()))
+                ->column(column('col_structure', column_type_jsonb()))
         );
     }
 
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLoaderIntegrationTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLoaderIntegrationTest.php
index 32db60d7f8..b05593a106 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLoaderIntegrationTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Integration/PostgreSqlLoaderIntegrationTest.php
@@ -6,7 +6,7 @@
 
 use function Flow\ETL\Adapter\PostgreSql\{from_pgsql_limit_offset, pgsql_delete_options, pgsql_insert_options, pgsql_update_options, to_pgsql_table};
 use function Flow\ETL\DSL\{df, from_array};
-use function Flow\PostgreSql\DSL\{asc, col, column, create, data_type_integer, data_type_text, drop, select, star, table};
+use function Flow\PostgreSql\DSL\{asc, col, column, column_type_integer, column_type_text, create, drop, select, star, table};
 use Flow\ETL\Adapter\PostgreSql\Operation;
 use Flow\ETL\Adapter\PostgreSql\Tests\IntegrationTestCase;
 
@@ -24,9 +24,9 @@ protected function setUp() : void
 
         $this->client->execute(
             create()->table($this->tableName)
-                ->column(column('id', data_type_integer())->primaryKey())
-                ->column(column('name', data_type_text()))
-                ->column(column('email', data_type_text())->unique())
+                ->column(column('id', column_type_integer())->primaryKey())
+                ->column(column('name', column_type_text()))
+                ->column(column('email', column_type_text())->unique())
         );
     }
 
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/IntegrationTestCase.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/IntegrationTestCase.php
index 0691a4722e..c3f620f6d5 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/IntegrationTestCase.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/IntegrationTestCase.php
@@ -4,7 +4,7 @@
 
 namespace Flow\ETL\Adapter\PostgreSql\Tests;
 
-use function Flow\PostgreSql\DSL\{pgsql_client, pgsql_connection_dsn, pgsql_mapper};
+use function Flow\PostgreSql\DSL\{pgsql_client, pgsql_connection_dsn};
 use Flow\ETL\Tests\FlowTestCase;
 use Flow\PostgreSql\Client\Client;
 
@@ -28,10 +28,7 @@ protected function setUp() : void
             static::markTestSkipped('PGSQL_DATABASE_URL environment variable is not set');
         }
 
-        $this->client = pgsql_client(
-            pgsql_connection_dsn($dsn),
-            mapper: pgsql_mapper(),
-        );
+        $this->client = pgsql_client(pgsql_connection_dsn($dsn));
     }
 
     protected function tearDown() : void
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/EntryTypesMapTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/EntryTypesMapTest.php
index 5981c84043..ebb81ebf89 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/EntryTypesMapTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/EntryTypesMapTest.php
@@ -9,7 +9,7 @@
 use Flow\ETL\Adapter\PostgreSql\EntryTypesMap;
 use Flow\ETL\Row\Entry\IntegerEntry;
 use Flow\PostgreSql\Client\TypedValue;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\TestCase;
 
 final class EntryTypesMapTest extends TestCase
@@ -17,13 +17,13 @@ final class EntryTypesMapTest extends TestCase
     public function test_allows_override_for_integer_entry_to_int2() : void
     {
         $map = new EntryTypesMap([
-            IntegerEntry::class => PostgreSqlType::INT2,
+            IntegerEntry::class => ValueType::INT2,
         ]);
 
         $result = $map->mapEntry(int_entry('small_count', 42));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::INT2, $result->targetType);
+        self::assertSame(ValueType::INT2, $result->targetType);
         self::assertSame(42, $result->value);
     }
 
@@ -33,7 +33,7 @@ public function test_maps_boolean_entry_to_bool_type() : void
         $result = $map->mapEntry(bool_entry('active', true));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::BOOL, $result->targetType);
+        self::assertSame(ValueType::BOOL, $result->targetType);
         self::assertTrue($result->value);
     }
 
@@ -44,7 +44,7 @@ public function test_maps_datetime_entry_to_timestamptz_type() : void
         $result = $map->mapEntry(datetime_entry('created_at', $date));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::TIMESTAMPTZ, $result->targetType);
+        self::assertSame(ValueType::TIMESTAMPTZ, $result->targetType);
         self::assertEquals($date, $result->value);
     }
 
@@ -54,7 +54,7 @@ public function test_maps_float_entry_to_float8_type() : void
         $result = $map->mapEntry(float_entry('price', 99.99));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::FLOAT8, $result->targetType);
+        self::assertSame(ValueType::FLOAT8, $result->targetType);
         self::assertSame(99.99, $result->value);
     }
 
@@ -64,7 +64,7 @@ public function test_maps_integer_entry_to_int8_type() : void
         $result = $map->mapEntry(int_entry('count', 42));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::INT8, $result->targetType);
+        self::assertSame(ValueType::INT8, $result->targetType);
         self::assertSame(42, $result->value);
     }
 
@@ -74,7 +74,7 @@ public function test_maps_json_entry_to_jsonb_type() : void
         $result = $map->mapEntry(json_entry('data', ['key' => 'value']));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::JSONB, $result->targetType);
+        self::assertSame(ValueType::JSONB, $result->targetType);
     }
 
     public function test_maps_list_entry_to_jsonb_type() : void
@@ -83,7 +83,7 @@ public function test_maps_list_entry_to_jsonb_type() : void
         $result = $map->mapEntry(list_entry('tags', [1, 2, 3], type_list(type_integer())));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::JSONB, $result->targetType);
+        self::assertSame(ValueType::JSONB, $result->targetType);
         self::assertSame([1, 2, 3], $result->value);
     }
 
@@ -93,7 +93,7 @@ public function test_maps_map_entry_to_jsonb_type() : void
         $result = $map->mapEntry(map_entry('metadata', ['key' => 'value'], type_map(type_string(), type_string())));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::JSONB, $result->targetType);
+        self::assertSame(ValueType::JSONB, $result->targetType);
         self::assertSame(['key' => 'value'], $result->value);
     }
 
@@ -111,7 +111,7 @@ public function test_maps_string_entry_to_text_type() : void
         $result = $map->mapEntry(str_entry('name', 'Alice'));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::TEXT, $result->targetType);
+        self::assertSame(ValueType::TEXT, $result->targetType);
         self::assertSame('Alice', $result->value);
     }
 
@@ -124,7 +124,7 @@ public function test_maps_structure_entry_to_jsonb_type() : void
         ])));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::JSONB, $result->targetType);
+        self::assertSame(ValueType::JSONB, $result->targetType);
     }
 
     public function test_maps_uuid_entry_to_uuid_type() : void
@@ -133,6 +133,6 @@ public function test_maps_uuid_entry_to_uuid_type() : void
         $result = $map->mapEntry(uuid_entry('id', '550e8400-e29b-41d4-a716-446655440000'));
 
         self::assertInstanceOf(TypedValue::class, $result);
-        self::assertSame(PostgreSqlType::UUID, $result->targetType);
+        self::assertSame(ValueType::UUID, $result->targetType);
     }
 }
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/DeleteQueryBuilderTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/DeleteQueryBuilderTest.php
index 5792aacd0d..a090199f9c 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/DeleteQueryBuilderTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/DeleteQueryBuilderTest.php
@@ -8,7 +8,7 @@
 use Flow\ETL\Adapter\PostgreSql\{EntryTypesMap, LoaderOptions\DeleteOptions, QueryBuilder\DeleteQueryBuilder};
 use Flow\ETL\Adapter\PostgreSql\Exception\RuntimeException;
 use Flow\PostgreSql\Client\TypedValue;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\TestCase;
 
 final class DeleteQueryBuilderTest extends TestCase
@@ -25,7 +25,7 @@ public function test_build_returns_typed_values() : void
         self::assertCount(1, $params);
         self::assertInstanceOf(TypedValue::class, $params[0]);
         self::assertSame(1, $params[0]->value);
-        self::assertSame(PostgreSqlType::INT8, $params[0]->targetType);
+        self::assertSame(ValueType::INT8, $params[0]->targetType);
     }
 
     public function test_build_simple_delete() : void
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/InsertQueryBuilderTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/InsertQueryBuilderTest.php
index 84b2fedc39..e95b079a8b 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/InsertQueryBuilderTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/InsertQueryBuilderTest.php
@@ -7,7 +7,7 @@
 use function Flow\ETL\DSL\{int_entry, row, rows, str_entry};
 use Flow\ETL\Adapter\PostgreSql\{EntryTypesMap, LoaderOptions\InsertOptions, QueryBuilder\InsertQueryBuilder};
 use Flow\PostgreSql\Client\TypedValue;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\TestCase;
 
 final class InsertQueryBuilderTest extends TestCase
@@ -24,9 +24,9 @@ public function test_build_returns_typed_values() : void
         self::assertInstanceOf(TypedValue::class, $params[0]);
         self::assertInstanceOf(TypedValue::class, $params[1]);
         self::assertSame(1, $params[0]->value);
-        self::assertSame(PostgreSqlType::INT8, $params[0]->targetType);
+        self::assertSame(ValueType::INT8, $params[0]->targetType);
         self::assertSame('Alice', $params[1]->value);
-        self::assertSame(PostgreSqlType::TEXT, $params[1]->targetType);
+        self::assertSame(ValueType::TEXT, $params[1]->targetType);
     }
 
     public function test_build_simple_insert() : void
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/UpdateQueryBuilderTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/UpdateQueryBuilderTest.php
index c119490a9f..2942fc1e13 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/UpdateQueryBuilderTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/QueryBuilder/UpdateQueryBuilderTest.php
@@ -8,7 +8,7 @@
 use Flow\ETL\Adapter\PostgreSql\{EntryTypesMap, LoaderOptions\UpdateOptions, QueryBuilder\UpdateQueryBuilder};
 use Flow\ETL\Adapter\PostgreSql\Exception\RuntimeException;
 use Flow\PostgreSql\Client\TypedValue;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\TestCase;
 
 final class UpdateQueryBuilderTest extends TestCase
@@ -38,10 +38,10 @@ public function test_build_returns_typed_values() : void
         self::assertCount(2, $params);
         self::assertInstanceOf(TypedValue::class, $params[0]);
         self::assertSame('Alice', $params[0]->value);
-        self::assertSame(PostgreSqlType::TEXT, $params[0]->targetType);
+        self::assertSame(ValueType::TEXT, $params[0]->targetType);
         self::assertInstanceOf(TypedValue::class, $params[1]);
         self::assertSame(1, $params[1]->value);
-        self::assertSame(PostgreSqlType::INT8, $params[1]->targetType);
+        self::assertSame(ValueType::INT8, $params[1]->targetType);
     }
 
     public function test_build_simple_update() : void
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/EnumConverterTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/EnumConverterTest.php
index 27653d493f..016662f479 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/EnumConverterTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/EnumConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\ETL\Adapter\PostgreSql\Tests\Fixtures\Enum\{BackedIntEnum, BackedStringEnum, UnitEnum};
 use Flow\ETL\Adapter\PostgreSql\ValueConverter\EnumConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\TestCase;
 
 final class EnumConverterTest extends TestCase
@@ -45,7 +45,7 @@ public function test_supported_types_returns_text() : void
     {
         $converter = new EnumConverter();
 
-        self::assertSame([PostgreSqlType::TEXT], $converter->supportedTypes());
+        self::assertSame([ValueType::TEXT], $converter->supportedTypes());
     }
 
     public function test_unit_enum_returns_name() : void
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/HTMLConverterTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/HTMLConverterTest.php
index 21bd48aee9..f6d0c65bcd 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/HTMLConverterTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/HTMLConverterTest.php
@@ -6,7 +6,7 @@
 
 use Dom\{HTMLDocument, HTMLElement};
 use Flow\ETL\Adapter\PostgreSql\ValueConverter\HTMLConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\TestCase;
 
 final class HTMLConverterTest extends TestCase
@@ -63,6 +63,6 @@ public function test_supported_types_returns_text() : void
     {
         $converter = new HTMLConverter();
 
-        self::assertSame([PostgreSqlType::TEXT], $converter->supportedTypes());
+        self::assertSame([ValueType::TEXT], $converter->supportedTypes());
     }
 }
diff --git a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/XMLConverterTest.php b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/XMLConverterTest.php
index 91e7e9560a..bca8ab3548 100644
--- a/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/XMLConverterTest.php
+++ b/src/adapter/etl-adapter-postgresql/tests/Flow/ETL/Adapter/PostgreSql/Tests/Unit/ValueConverter/XMLConverterTest.php
@@ -5,7 +5,7 @@
 namespace Flow\ETL\Adapter\PostgreSql\Tests\Unit\ValueConverter;
 
 use Flow\ETL\Adapter\PostgreSql\ValueConverter\XMLConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\TestCase;
 
 final class XMLConverterTest extends TestCase
@@ -57,6 +57,6 @@ public function test_supported_types_returns_xml() : void
     {
         $converter = new XMLConverter();
 
-        self::assertSame([PostgreSqlType::XML], $converter->supportedTypes());
+        self::assertSame([ValueType::XML], $converter->supportedTypes());
     }
 }
diff --git a/src/bridge/symfony/http-foundation-telemetry/composer.json b/src/bridge/symfony/http-foundation-telemetry/composer.json
index 39cdfd555d..2fe84e18b8 100644
--- a/src/bridge/symfony/http-foundation-telemetry/composer.json
+++ b/src/bridge/symfony/http-foundation-telemetry/composer.json
@@ -14,7 +14,7 @@
     "require": {
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
         "flow-php/telemetry": "self.version",
-        "symfony/http-foundation": "^6.4 || ^7.3 || ^8.0"
+        "symfony/http-foundation": "^6.4 || ^7.4 || ^8.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/bridge/symfony/http-foundation/composer.json b/src/bridge/symfony/http-foundation/composer.json
index e77fe053a0..6518f3c6cf 100644
--- a/src/bridge/symfony/http-foundation/composer.json
+++ b/src/bridge/symfony/http-foundation/composer.json
@@ -12,7 +12,7 @@
     ],
     "require": {
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
-        "symfony/http-foundation": "^6.4 || ^7.3 || ^8.0",
+        "symfony/http-foundation": "^6.4 || ^7.4 || ^8.0",
         "flow-php/etl": "self.version"
     },
     "require-dev": {
diff --git a/src/bridge/symfony/postgresql-bundle/.github/workflows/readonly.yaml b/src/bridge/symfony/postgresql-bundle/.github/workflows/readonly.yaml
new file mode 100644
index 0000000000..24255888e1
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/.github/workflows/readonly.yaml
@@ -0,0 +1,17 @@
+name: Readonly
+
+on:
+  pull_request_target:
+    types: [opened]
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: superbrothers/close-pull-request@v3
+        with:
+          comment: |
+            Hi, thank you for your contribution.
+            Unfortunately, this repository is read-only. It's a split from our main monorepo repository.
+            In order to proceed with this PR please open it against https://github.com/flow-php/flow repository.
+            Thank you.
diff --git a/src/bridge/symfony/postgresql-bundle/CONTRIBUTING.md b/src/bridge/symfony/postgresql-bundle/CONTRIBUTING.md
new file mode 100644
index 0000000000..f035b534af
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/CONTRIBUTING.md
@@ -0,0 +1,6 @@
+## Contributing
+
+This repo is **READ ONLY**, in order to contribute to Flow PHP project, please
+open PR against [flow](https://github.com/flow-php/flow) monorepo.
+
+Changes merged to monorepo are automatically propagated into sub repositories.
diff --git a/src/bridge/symfony/postgresql-bundle/LICENSE b/src/bridge/symfony/postgresql-bundle/LICENSE
new file mode 100644
index 0000000000..bc3cc4d085
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2020-present Flow PHP
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/src/bridge/symfony/postgresql-bundle/README.md b/src/bridge/symfony/postgresql-bundle/README.md
new file mode 100644
index 0000000000..348df61869
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/README.md
@@ -0,0 +1,11 @@
+# Symfony PostgreSQL Bundle
+
+Symfony bundle integrating Flow PHP PostgreSQL library with connection management and database migrations.
+
+> [!IMPORTANT]  
+> This repository is a subtree split from our monorepo. If you'd like to contribute, please visit our main monorepo [flow-php/flow](https://github.com/flow-php/flow).
+
+- 📜 [Documentation](https://flow-php.com/documentation/components/bridges/symfony-postgresql-bundle/)
+- ➡️ [Installation](https://flow-php.com/documentation/installation/packages/symfony-postgresql-bundle/)
+- 🛠️ [Contributing](https://flow-php.com/documentation/contributing/)
+- 🚧 [Upgrading](https://flow-php.com/documentation/upgrading/)
diff --git a/src/bridge/symfony/postgresql-bundle/composer.json b/src/bridge/symfony/postgresql-bundle/composer.json
new file mode 100644
index 0000000000..c71168a856
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/composer.json
@@ -0,0 +1,44 @@
+{
+    "name": "flow-php/symfony-postgresql-bundle",
+    "type": "symfony-bundle",
+    "description": "Flow PHP - Symfony PostgreSQL Bundle",
+    "keywords": [
+        "flow-php",
+        "symfony",
+        "postgresql",
+        "bundle"
+    ],
+    "homepage": "https://github.com/flow-php/flow",
+    "license": "MIT",
+    "require": {
+        "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
+        "flow-php/filesystem": "self.version",
+        "flow-php/postgresql": "self.version",
+        "symfony/config": "^6.4 || ^7.4 || ^8.0",
+        "symfony/console": "^6.4 || ^7.4 || ^8.0",
+        "symfony/dependency-injection": "^6.4 || ^7.4 || ^8.0",
+        "symfony/http-kernel": "^6.4 || ^7.4 || ^8.0",
+        "twig/twig": "^3.0"
+    },
+    "require-dev": {
+        "symfony/framework-bundle": "^6.4 || ^7.4 || ^8.0"
+    },
+    "config": {
+        "optimize-autoloader": true,
+        "sort-packages": true
+    },
+    "autoload": {
+        "psr-4": {
+            "Flow\\": [
+                "src/Flow"
+            ]
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Flow\\": "tests/Flow"
+        }
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Attribute/AsCatalogProvider.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Attribute/AsCatalogProvider.php
new file mode 100644
index 0000000000..7c903e21a8
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Attribute/AsCatalogProvider.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Attribute;
+
+#[\Attribute(\Attribute::TARGET_CLASS)]
+final readonly class AsCatalogProvider
+{
+    public function __construct()
+    {
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/CatalogProvider/ArrayCatalogProvider.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/CatalogProvider/ArrayCatalogProvider.php
new file mode 100644
index 0000000000..458fff47a0
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/CatalogProvider/ArrayCatalogProvider.php
@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\CatalogProvider;
+
+use Flow\PostgreSql\Schema\{Catalog, CatalogProvider};
+
+/**
+ * @phpstan-import-type CatalogShape from Catalog
+ */
+final readonly class ArrayCatalogProvider implements CatalogProvider
+{
+    /**
+     * @param CatalogShape $data
+     */
+    public function __construct(
+        private array $data,
+    ) {
+    }
+
+    public function get() : Catalog
+    {
+        return Catalog::fromArray($this->data);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/CreateDatabaseCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/CreateDatabaseCommand.php
new file mode 100644
index 0000000000..67abb9a49c
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/CreateDatabaseCommand.php
@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\PostgreSql\DSL\{agg_count, col, create, eq, param, select};
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+use Flow\PostgreSql\Client\ConnectionParameters;
+use Flow\PostgreSql\Client\Infrastructure\PgSql\PgSqlClient;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:database:create', description: 'Create the configured database')]
+final class CreateDatabaseCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null)
+            ->addOption('if-not-exists', null, InputOption::VALUE_NONE, 'Don\'t error if database already exists');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $params = type_instance_of(ConnectionParameters::class)->assert($this->container->get("flow.postgresql.{$connection}.connection_parameters"));
+
+        $maintenanceClient = PgSqlClient::connect($params->withDatabase('postgres'));
+
+        $exists = $maintenanceClient->fetchScalarInt(
+            select(agg_count())->from('pg_database')->where(eq(col('datname'), param(1))),
+            [$params->database()]
+        ) > 0;
+
+        if ($exists) {
+            $maintenanceClient->close();
+
+            if ($input->getOption('if-not-exists')) {
+                $output->writeln(\sprintf('<info>Database "%s" already exists.</info>', $params->database()));
+
+                return Command::SUCCESS;
+            }
+
+            $output->writeln(\sprintf('<error>Database "%s" already exists.</error>', $params->database()));
+
+            return Command::FAILURE;
+        }
+
+        $maintenanceClient->execute(create()->database($params->database()));
+        $maintenanceClient->close();
+
+        $output->writeln(\sprintf('<info>Database "%s" created successfully.</info>', $params->database()));
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/CurrentCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/CurrentCommand.php
new file mode 100644
index 0000000000..e961515043
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/CurrentCommand.php
@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+
+use Flow\PostgreSql\Migrations\Store\MigrationStore;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:migrations:current', description: 'Output the current migration version')]
+final class CurrentCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null);
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $store = type_instance_of(MigrationStore::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.store"));
+
+        $store->initialize();
+        $executed = $store->executedMigrations();
+        $latest = $executed->latest();
+
+        $io->title('Current Migration');
+
+        if ($latest === null) {
+            $io->note('No migrations have been executed yet.');
+
+            return Command::SUCCESS;
+        }
+
+        $io->definitionList(
+            ['Version' => "<fg=cyan>{$latest->version}</>"],
+            ['Executed at' => '<fg=gray>' . $latest->executedAt->format('Y-m-d H:i:s') . '</>'],
+            ['Execution time' => $latest->executionTimeMs !== null ? $latest->executionTimeMs . 'ms' : '<fg=gray>-</>'],
+            ['Total executed' => (string) \count($executed)],
+        );
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/DiffCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/DiffCommand.php
new file mode 100644
index 0000000000..57eeef9d78
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/DiffCommand.php
@@ -0,0 +1,75 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+
+use Flow\PostgreSql\Migrations\Configuration as MigrationsConfiguration;
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Generator\DiffMigrationGenerator;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputArgument, InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:migrations:diff', description: 'Generate a migration by comparing the current database to the catalog')]
+final class DiffCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null)
+            ->addArgument('name', InputArgument::OPTIONAL, 'The name of the migration (e.g. \'add_categories\')')
+            ->addOption('allow-empty-diff', null, InputOption::VALUE_NONE, 'Do not throw when no changes are detected')
+            ->addOption('from-empty-schema', null, InputOption::VALUE_NONE, 'Generate as if the database were empty');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $diffGenerator = type_instance_of(DiffMigrationGenerator::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.diff_generator"));
+        $configuration = type_instance_of(MigrationsConfiguration::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.configuration"));
+        /** @var ?string $name */
+        $name = $input->getArgument('name');
+        $allowEmpty = (bool) $input->getOption('allow-empty-diff');
+        $fromEmpty = (bool) $input->getOption('from-empty-schema');
+
+        try {
+            $version = $diffGenerator->generate($name, $allowEmpty, $fromEmpty);
+        } catch (MigrationException $e) {
+            $io->warning($e->getMessage());
+
+            return Command::FAILURE;
+        }
+
+        $directory = $configuration->migrationsDirectory . '/' . $version . ($name !== null ? '_' . $name : '');
+        $realDirectory = \realpath($directory) ?: $directory;
+        $migrationPath = $realDirectory . '/' . $configuration->migrationFileName;
+        $rollbackPath = $realDirectory . '/' . $configuration->rollbackFileName;
+
+        $io->success(\sprintf('Generated migration: %s', $version));
+
+        $rows = [['<fg=cyan>Migration</>', $migrationPath]];
+
+        if (\file_exists($rollbackPath)) {
+            $rows[] = ['<fg=cyan>Rollback</>', $rollbackPath];
+        }
+
+        $io->table(['File', 'Path'], $rows);
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/DropDatabaseCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/DropDatabaseCommand.php
new file mode 100644
index 0000000000..5522fe0394
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/DropDatabaseCommand.php
@@ -0,0 +1,83 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\PostgreSql\DSL\{agg_count, and_, col, drop, eq, func, ne, param, select};
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+use Flow\PostgreSql\Client\ConnectionParameters;
+use Flow\PostgreSql\Client\Infrastructure\PgSql\PgSqlClient;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:database:drop', description: 'Drop the configured database')]
+final class DropDatabaseCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null)
+            ->addOption('if-exists', null, InputOption::VALUE_NONE, 'Don\'t error if database doesn\'t exist')
+            ->addOption('force', null, InputOption::VALUE_NONE, 'Required to actually execute the drop');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+
+        if (!$input->getOption('force')) {
+            $output->writeln('<error>This operation cannot be undone. Use --force to proceed.</error>');
+
+            return Command::FAILURE;
+        }
+
+        $params = type_instance_of(ConnectionParameters::class)->assert($this->container->get("flow.postgresql.{$connection}.connection_parameters"));
+
+        $maintenanceClient = PgSqlClient::connect($params->withDatabase('postgres'));
+
+        $exists = $maintenanceClient->fetchScalarInt(
+            select(agg_count())->from('pg_database')->where(eq(col('datname'), param(1))),
+            [$params->database()]
+        ) > 0;
+
+        if (!$exists) {
+            $maintenanceClient->close();
+
+            if ($input->getOption('if-exists')) {
+                $output->writeln(\sprintf('<info>Database "%s" does not exist.</info>', $params->database()));
+
+                return Command::SUCCESS;
+            }
+
+            $output->writeln(\sprintf('<error>Database "%s" does not exist.</error>', $params->database()));
+
+            return Command::FAILURE;
+        }
+
+        $maintenanceClient->execute(
+            select(func('pg_terminate_backend', [col('pid')]))
+                ->from('pg_stat_activity')
+                ->where(and_(eq(col('datname'), param(1)), ne(col('pid'), func('pg_backend_pid')))),
+            [$params->database()]
+        );
+        $maintenanceClient->execute(drop()->database($params->database()));
+        $maintenanceClient->close();
+
+        $output->writeln(\sprintf('<info>Database "%s" dropped successfully.</info>', $params->database()));
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/ExecuteCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/ExecuteCommand.php
new file mode 100644
index 0000000000..84da038434
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/ExecuteCommand.php
@@ -0,0 +1,82 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+
+use Flow\PostgreSql\Migrations\{Direction, Migrator, Version};
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputArgument, InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:migrations:execute', description: 'Execute a single migration')]
+final class ExecuteCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addArgument('version', InputArgument::REQUIRED, 'The migration version to execute')
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null)
+            ->addOption('dry-run', null, InputOption::VALUE_NONE, 'Execute migration as a dry run')
+            ->addOption('up', null, InputOption::VALUE_NONE, 'Execute the migration up (default)')
+            ->addOption('down', null, InputOption::VALUE_NONE, 'Execute the migration down');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $migrator = type_instance_of(Migrator::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.migrator"));
+        $versionString = type_string()->assert($input->getArgument('version'));
+        $version = Version::fromString($versionString);
+        $dryRun = (bool) $input->getOption('dry-run');
+        $direction = $input->getOption('down') ? Direction::DOWN : Direction::UP;
+        $directionLabel = $direction === Direction::UP ? '<fg=green>UP</>' : '<fg=yellow>DOWN</>';
+
+        $io->title('Execute Migration' . ($dryRun ? ' (dry run)' : ''));
+
+        $io->definitionList(
+            ['Version' => "<fg=cyan>{$version}</>"],
+            ['Direction' => $direction === Direction::UP ? '<fg=green>UP</>' : '<fg=yellow>DOWN</>'],
+        );
+
+        if ($input->isInteractive() && !$io->confirm(\sprintf('Execute migration %s %s?', $direction === Direction::UP ? 'UP' : 'DOWN', $version), false)) {
+            $io->warning('Execution cancelled.');
+
+            return Command::SUCCESS;
+        }
+
+        $result = $migrator->executeVersion($version, $direction, $dryRun);
+
+        if ($result->error !== null) {
+            $io->error(\sprintf('%s %s failed: %s', $direction === Direction::UP ? 'UP' : 'DOWN', $version, $result->error->getMessage()));
+
+            return Command::FAILURE;
+        }
+
+        $io->table(['Direction', 'Version', 'Result', 'Time'], [
+            [$directionLabel, (string) $version, '<fg=green>OK</>', $result->executionTimeMs . 'ms'],
+        ]);
+
+        if ($dryRun) {
+            $io->note('Dry run completed. No changes were applied.');
+        } else {
+            $io->success(\sprintf('Migration %s executed successfully in %dms.', $version, $result->executionTimeMs));
+        }
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/GenerateCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/GenerateCommand.php
new file mode 100644
index 0000000000..6380e70f5f
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/GenerateCommand.php
@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+
+use Flow\PostgreSql\Migrations\Configuration as MigrationsConfiguration;
+use Flow\PostgreSql\Migrations\Generator\MigrationGenerator;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputArgument, InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:migrations:generate', description: 'Generate a blank migration class')]
+final class GenerateCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null)
+            ->addArgument('name', InputArgument::OPTIONAL, 'The name of the migration (e.g. \'add_email_index\')');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $generator = type_instance_of(MigrationGenerator::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.generator"));
+        $configuration = type_instance_of(MigrationsConfiguration::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.configuration"));
+        /** @var ?string $name */
+        $name = $input->getArgument('name');
+
+        $version = $generator->generateDataMigration($name);
+
+        $directory = $configuration->migrationsDirectory . '/' . $version . ($name !== null ? '_' . $name : '');
+        $realDirectory = \realpath($directory) ?: $directory;
+
+        $io->success(\sprintf('Generated migration: %s', $version));
+
+        $io->table(['File', 'Path'], [
+            ['<fg=cyan>Migration</>', $realDirectory . '/' . $configuration->migrationFileName],
+            ['<fg=cyan>Rollback</>', $realDirectory . '/' . $configuration->rollbackFileName],
+        ]);
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/LatestCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/LatestCommand.php
new file mode 100644
index 0000000000..820eb56f83
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/LatestCommand.php
@@ -0,0 +1,80 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+
+use Flow\PostgreSql\Migrations\{MigrationState, Migrator};
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:migrations:latest', description: 'Output the latest available migration version')]
+final class LatestCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null);
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $migrator = type_instance_of(Migrator::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.migrator"));
+
+        $statuses = $migrator->status();
+
+        if (\count($statuses) === 0) {
+            $io->note('No migrations available.');
+
+            return Command::SUCCESS;
+        }
+
+        $io->title('Latest Migrations');
+
+        $all = \iterator_to_array($statuses);
+        $latest = \array_slice($all, -5);
+
+        $rows = [];
+
+        foreach ($latest as $migration) {
+            $isLast = $migration === \end($all);
+            $stateLabel = match ($migration->state) {
+                MigrationState::EXECUTED => '<fg=green>EXECUTED</>',
+                MigrationState::PENDING => '<fg=yellow>PENDING</>',
+                MigrationState::UNAVAILABLE => '<fg=red>UNAVAILABLE</>',
+            };
+
+            $rows[] = [
+                $isLast ? '<fg=cyan>►</>' : ' ',
+                $stateLabel,
+                (string) $migration->version,
+                $migration->name,
+            ];
+        }
+
+        $io->table(['', 'Status', 'Version', 'Name'], $rows);
+
+        if (\count($all) > 5) {
+            $io->text(\sprintf('  <fg=gray>Showing last 5 of %d migrations</>', \count($all)));
+            $io->newLine();
+        }
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/ListCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/ListCommand.php
new file mode 100644
index 0000000000..5c7e264fa2
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/ListCommand.php
@@ -0,0 +1,81 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+
+use Flow\PostgreSql\Migrations\{MigrationState, Migrator};
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:migrations:list', description: 'List all available migrations')]
+final class ListCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null);
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $migrator = type_instance_of(Migrator::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.migrator"));
+
+        $io->title('Migrations');
+
+        $statuses = $migrator->status();
+
+        if (\count($statuses) === 0) {
+            $io->note('No migrations found.');
+
+            return Command::SUCCESS;
+        }
+
+        $rows = [];
+
+        foreach ($statuses as $migration) {
+            $stateLabel = match ($migration->state) {
+                MigrationState::EXECUTED => '<fg=green>EXECUTED</>',
+                MigrationState::PENDING => '<fg=yellow>PENDING</>',
+                MigrationState::UNAVAILABLE => '<fg=red>UNAVAILABLE</>',
+            };
+
+            $executedAt = $migration->executedAt !== null
+                ? '<fg=gray>' . $migration->executedAt->format('Y-m-d H:i:s') . '</>'
+                : '<fg=gray>-</>';
+
+            $rows[] = [$stateLabel, (string) $migration->version, $migration->name, $executedAt];
+        }
+
+        $io->table(['Status', 'Version', 'Name', 'Executed at'], $rows);
+
+        $executed = \count($statuses->executed());
+        $pending = \count($statuses->pending());
+
+        $io->text(\sprintf(
+            '  <fg=green>%d</> executed, <fg=%s>%d</> pending',
+            $executed,
+            $pending > 0 ? 'yellow' : 'green',
+            $pending,
+        ));
+        $io->newLine();
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/MigrateCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/MigrateCommand.php
new file mode 100644
index 0000000000..16c753c9ff
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/MigrateCommand.php
@@ -0,0 +1,133 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+
+use Flow\PostgreSql\Migrations\{Configuration as MigrationsConfiguration, Direction, MigrationState, Migrator, VersionResolver};
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputArgument, InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:migrations:migrate', description: 'Execute migrations')]
+final class MigrateCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addArgument('version', InputArgument::OPTIONAL, 'The version to migrate to (first, prev, next, latest, or version string)', 'latest')
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null)
+            ->addOption('dry-run', null, InputOption::VALUE_NONE, 'Execute migration as a dry run')
+            ->addOption('all-or-nothing', null, InputOption::VALUE_NONE, 'Wrap the entire migration in a transaction');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $migrator = type_instance_of(Migrator::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.migrator"));
+        $resolver = type_instance_of(VersionResolver::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.version_resolver"));
+        $configuration = type_instance_of(MigrationsConfiguration::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.configuration"));
+        $versionAlias = type_string()->assert($input->getArgument('version'));
+        $dryRun = (bool) $input->getOption('dry-run');
+        $allOrNothing = $input->getOption('all-or-nothing') ? true : null;
+
+        $io->title('Migrate' . ($dryRun ? ' (dry run)' : ''));
+
+        $io->definitionList(
+            ['Connection' => "<fg=cyan>{$connection}</>"],
+            ['Target' => "<fg=cyan>{$versionAlias}</>"],
+            ['Directory' => "<fg=gray>{$configuration->migrationsDirectory}</>"],
+        );
+
+        $statuses = $migrator->status();
+        $pendingCount = \count($statuses->pending());
+        $executedCount = \count($statuses->executed());
+
+        if (\count($statuses) === 0) {
+            $io->success('No migrations found.');
+
+            return Command::SUCCESS;
+        }
+
+        if ($pendingCount === 0 && $versionAlias === 'latest') {
+            $io->success('Already up to date.');
+
+            return Command::SUCCESS;
+        }
+
+        $statusRows = [];
+
+        foreach ($statuses as $migration) {
+            $stateLabel = match ($migration->state) {
+                MigrationState::EXECUTED => '<fg=green>EXECUTED</>',
+                MigrationState::PENDING => '<fg=yellow>PENDING</>',
+                MigrationState::UNAVAILABLE => '<fg=red>UNAVAILABLE</>',
+            };
+            $statusRows[] = [$stateLabel, (string) $migration->version, $migration->name];
+        }
+
+        $io->table(['Status', 'Version', 'Name'], $statusRows);
+
+        $version = $resolver->resolve($versionAlias);
+
+        if ($input->isInteractive() && !$io->confirm(\sprintf('Migrate to version <fg=cyan>%s</>?', $version), false)) {
+            $io->warning('Migration cancelled.');
+
+            return Command::SUCCESS;
+        }
+
+        $results = $migrator->migrate($version, $dryRun, $allOrNothing);
+
+        if (\count($results) === 0) {
+            $io->success('Already up to date.');
+
+            return Command::SUCCESS;
+        }
+
+        $rows = [];
+        $totalTime = 0;
+
+        foreach ($results as $result) {
+            $totalTime += $result->executionTimeMs;
+            $direction = $result->direction === Direction::UP ? '<fg=green>UP</>' : '<fg=yellow>DOWN</>';
+
+            if ($result->error !== null) {
+                $rows[] = [$direction, (string) $result->version, '<fg=red>FAILED</>', $result->executionTimeMs . 'ms'];
+                $io->table(['Direction', 'Version', 'Result', 'Time'], $rows);
+                $io->error(\sprintf('%s failed: %s', $result->version, $result->error->getMessage()));
+
+                return Command::FAILURE;
+            }
+
+            if ($result->skipped) {
+                $rows[] = [$direction, (string) $result->version, '<fg=gray>SKIPPED</>', '-'];
+            } else {
+                $rows[] = [$direction, (string) $result->version, '<fg=green>OK</>', $result->executionTimeMs . 'ms'];
+            }
+        }
+
+        $io->table(['Direction', 'Version', 'Result', 'Time'], $rows);
+
+        if ($dryRun) {
+            $io->note('Dry run completed. No changes were applied.');
+        } else {
+            $io->success(\sprintf('%d migration(s) executed in %dms.', \count($results), $totalTime));
+        }
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/RunSqlCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/RunSqlCommand.php
new file mode 100644
index 0000000000..b7c06f473f
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/RunSqlCommand.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+use Flow\PostgreSql\Client\Client;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputArgument, InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:sql:run', description: 'Execute SQL directly on the database')]
+final class RunSqlCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null)
+            ->addArgument('sql', InputArgument::REQUIRED, 'The SQL statement to execute');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $client = type_instance_of(Client::class)->assert($this->container->get("flow.postgresql.{$connection}.client"));
+        $sql = type_string()->assert($input->getArgument('sql'));
+
+        if (\str_starts_with(\strtoupper(\trim($sql)), 'SELECT')) {
+            $rows = $client->fetchAll($sql);
+
+            if (empty($rows)) {
+                $output->writeln('<info>No results.</info>');
+
+                return Command::SUCCESS;
+            }
+
+            $headers = \array_keys($rows[0]);
+            $output->writeln(\implode("\t", $headers));
+            $output->writeln(\str_repeat('-', 80));
+
+            foreach ($rows as $row) {
+                /** @var array<string, null|scalar> $row */
+                $output->writeln(\implode("\t", \array_map(static fn ($v) => $v === null ? 'NULL' : \strval($v), $row)));
+            }
+
+            $output->writeln('');
+            $output->writeln(\sprintf('<info>%d row(s) returned.</info>', \count($rows)));
+
+            return Command::SUCCESS;
+        }
+
+        $affected = $client->execute($sql);
+        $output->writeln(\sprintf('<info>%d row(s) affected.</info>', $affected));
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/StatusCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/StatusCommand.php
new file mode 100644
index 0000000000..fb87abc233
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/StatusCommand.php
@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+
+use Flow\PostgreSql\Migrations\Migrator;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:migrations:status', description: 'View the migration status')]
+final class StatusCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null);
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $migrator = type_instance_of(Migrator::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.migrator"));
+
+        $status = $migrator->status();
+
+        $total = \count($status);
+        $executed = \count($status->executed());
+        $pending = \count($status->pending());
+
+        $io->title('Migration Status');
+
+        $io->definitionList(
+            ['Connection' => "<fg=cyan>{$connection}</>"],
+            ['Total migrations' => (string) $total],
+            ['Executed' => "<fg=green>{$executed}</>"],
+            ['Pending' => $pending > 0 ? "<fg=yellow>{$pending}</>" : '<fg=green>0</>'],
+        );
+
+        if ($pending > 0) {
+            $io->warning(\sprintf('%d migration(s) pending. Run <fg=yellow>flow:migrations:migrate</> to execute.', $pending));
+        } else {
+            $io->success('All migrations are up to date.');
+        }
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/UpToDateCommand.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/UpToDateCommand.php
new file mode 100644
index 0000000000..16a91fb709
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Command/UpToDateCommand.php
@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Command;
+
+use function Flow\Types\DSL\{type_instance_of, type_string};
+
+use Flow\PostgreSql\Migrations\Migrator;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\{InputInterface, InputOption};
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+#[AsCommand(name: 'flow:migrations:up-to-date', description: 'Check if all migrations have been executed')]
+final class UpToDateCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+        private readonly string $defaultConnection,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure() : void
+    {
+        $this
+            ->addOption('connection', 'c', InputOption::VALUE_OPTIONAL, 'The connection to use', null);
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output) : int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $connection = type_string()->assert($input->getOption('connection') ?? $this->defaultConnection);
+        $migrator = type_instance_of(Migrator::class)->assert($this->container->get("flow.postgresql.{$connection}.migrations.migrator"));
+
+        $status = $migrator->status();
+        $pending = $status->pending();
+
+        if (\count($pending) === 0) {
+            $io->success('All migrations are up to date.');
+
+            return Command::SUCCESS;
+        }
+
+        $rows = [];
+
+        foreach ($pending as $migration) {
+            $rows[] = ['<fg=yellow>PENDING</>', (string) $migration->version, $migration->name];
+        }
+
+        $io->error(\sprintf('Out of date! %d pending migration(s).', \count($pending)));
+        $io->table(['Status', 'Version', 'Name'], $rows);
+        $io->text('  Run <fg=yellow>flow:migrations:migrate</> to execute pending migrations.');
+        $io->newLine();
+
+        return Command::FAILURE;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/DependencyInjection/Compiler/CatalogProviderPass.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/DependencyInjection/Compiler/CatalogProviderPass.php
new file mode 100644
index 0000000000..7e4e9aa29a
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/DependencyInjection/Compiler/CatalogProviderPass.php
@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\DependencyInjection\Compiler;
+
+use Flow\PostgreSql\Schema\ChainCatalogProvider;
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\{ContainerBuilder, Definition, Reference};
+
+final class CatalogProviderPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container) : void
+    {
+        $providerRefs = [];
+
+        foreach ($container->findTaggedServiceIds('flow.postgresql.catalog_provider') as $serviceId => $tags) {
+            $providerRefs[] = new Reference($serviceId);
+        }
+
+        if ($container->hasParameter('flow.postgresql.catalog_provider.service_ids')) {
+            /** @var list<string> $serviceIds */
+            $serviceIds = $container->getParameter('flow.postgresql.catalog_provider.service_ids');
+
+            foreach ($serviceIds as $serviceId) {
+                $providerRefs[] = new Reference($serviceId);
+            }
+        }
+
+        if ($providerRefs === [] && $container->hasParameter('flow.postgresql.migrations.connections')) {
+            throw new \LogicException('No catalog providers found. Register at least one catalog provider using #[AsCatalogProvider] attribute, "flow.postgresql.catalog_provider" tag, or "catalog_providers" configuration.');
+        }
+
+        $chainDef = new Definition(ChainCatalogProvider::class, $providerRefs);
+        $chainDef->setPublic(true);
+        $container->setDefinition('flow.postgresql.migrations.catalog_provider', $chainDef);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/DependencyInjection/Configuration.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/DependencyInjection/Configuration.php
new file mode 100644
index 0000000000..442031c2aa
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/DependencyInjection/Configuration.php
@@ -0,0 +1,108 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\DependencyInjection;
+
+use Symfony\Component\Config\Definition\Builder\TreeBuilder;
+use Symfony\Component\Config\Definition\ConfigurationInterface;
+
+final class Configuration implements ConfigurationInterface
+{
+    public function getConfigTreeBuilder() : TreeBuilder
+    {
+        $treeBuilder = new TreeBuilder('flow_postgresql');
+
+        $treeBuilder->getRootNode()
+            ->children()
+                ->arrayNode('connections')
+                    ->requiresAtLeastOneElement()
+                    ->useAttributeAsKey('name')
+                    ->arrayPrototype()
+                        ->children()
+                            ->scalarNode('dsn')
+                                ->isRequired()
+                                ->cannotBeEmpty()
+                                ->info('PostgreSQL connection DSN (e.g. postgresql://user:pass@localhost:5432/dbname)')
+                            ->end()
+                            ->arrayNode('telemetry')
+                                ->children()
+                                    ->scalarNode('service_id')
+                                        ->isRequired()
+                                        ->cannotBeEmpty()
+                                        ->info('Service ID of the Telemetry instance (e.g. flow.telemetry)')
+                                    ->end()
+                                    ->scalarNode('clock_service_id')
+                                        ->defaultNull()
+                                        ->info('Service ID of a PSR ClockInterface implementation. Default: creates SystemClock')
+                                    ->end()
+                                    ->booleanNode('trace_queries')->defaultTrue()->end()
+                                    ->booleanNode('trace_transactions')->defaultTrue()->end()
+                                    ->booleanNode('collect_metrics')->defaultTrue()->end()
+                                    ->booleanNode('log_queries')->defaultFalse()->end()
+                                    ->integerNode('max_query_length')->defaultValue(1000)->min(0)->end()
+                                    ->booleanNode('include_parameters')->defaultFalse()->end()
+                                    ->integerNode('max_parameters')->defaultValue(10)->min(0)->end()
+                                    ->integerNode('max_parameter_length')->defaultValue(100)->min(0)->end()
+                                ->end()
+                            ->end()
+                        ->end()
+                    ->end()
+                ->end()
+                ->arrayNode('migrations')
+                    ->canBeEnabled()
+                    ->children()
+                        ->scalarNode('directory')
+                            ->defaultValue('%kernel.project_dir%/migrations')
+                            ->cannotBeEmpty()
+                        ->end()
+                        ->scalarNode('namespace')
+                            ->defaultValue('App\\Migrations')
+                            ->cannotBeEmpty()
+                        ->end()
+                        ->scalarNode('table_name')
+                            ->defaultValue('flow_migrations')
+                            ->cannotBeEmpty()
+                        ->end()
+                        ->scalarNode('table_schema')
+                            ->defaultValue('public')
+                            ->cannotBeEmpty()
+                        ->end()
+                        ->scalarNode('migration_file_name')
+                            ->defaultValue('migration.php')
+                            ->cannotBeEmpty()
+                        ->end()
+                        ->scalarNode('rollback_file_name')
+                            ->defaultValue('rollback.php')
+                            ->cannotBeEmpty()
+                        ->end()
+                        ->booleanNode('all_or_nothing')
+                            ->defaultFalse()
+                            ->info('Wrap all migrations in a single transaction (default: false)')
+                        ->end()
+                        ->booleanNode('generate_rollback')
+                            ->defaultTrue()
+                            ->info('Generate rollback files when creating migrations (default: true)')
+                        ->end()
+                    ->end()
+                ->end()
+                ->arrayNode('catalog_providers')
+                    ->info('List of catalog providers to merge into the target schema. Each entry must have either "catalog_provider_id" or "catalog".')
+                    ->arrayPrototype()
+                        ->children()
+                            ->scalarNode('catalog_provider_id')
+                                ->defaultNull()
+                                ->info('Service ID of Flow\\PostgreSql\\Schema\\CatalogProvider')
+                            ->end()
+                            ->variableNode('catalog')
+                                ->defaultNull()
+                                ->info('Inline catalog definition matching Catalog::fromArray() shape')
+                            ->end()
+                        ->end()
+                    ->end()
+                ->end()
+            ->end();
+
+        return $treeBuilder;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/DependencyInjection/FlowPostgreSqlExtension.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/DependencyInjection/FlowPostgreSqlExtension.php
new file mode 100644
index 0000000000..b2694ed3f0
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/DependencyInjection/FlowPostgreSqlExtension.php
@@ -0,0 +1,276 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\DependencyInjection;
+
+use function Flow\Types\DSL\type_string;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\CatalogProvider\ArrayCatalogProvider;
+use Flow\Bridge\Symfony\PostgreSqlBundle\Generator\TwigMigrationGenerator;
+use Flow\Bridge\Symfony\PostgreSqlBundle\Repository\FilesystemMigrationRepository;
+use Flow\Filesystem\Local\NativeLocalFilesystem;
+use Flow\Filesystem\Path;
+use Flow\PostgreSql\Client\{Client, ConnectionParameters, DsnParser};
+use Flow\PostgreSql\Client\Infrastructure\PgSql\PgSqlClient;
+use Flow\PostgreSql\Client\Telemetry\{PostgreSqlTelemetryConfig, PostgreSqlTelemetryOptions, TraceableClient};
+use Flow\PostgreSql\Migrations\{Configuration as MigrationsConfiguration, MigrationsFactory, Migrator, VersionResolver};
+use Flow\PostgreSql\Migrations\Executor\MigrationExecutor;
+use Flow\PostgreSql\Migrations\Generator\{DiffMigrationGenerator, MigrationGenerator};
+use Flow\PostgreSql\Migrations\Repository\MigrationRepository;
+use Flow\PostgreSql\Migrations\Store\MigrationStore;
+use Flow\PostgreSql\Migrations\VersionGenerator\TimestampVersionGenerator;
+use Flow\Telemetry\Provider\Clock\SystemClock;
+use Symfony\Component\Config\FileLocator;
+use Symfony\Component\DependencyInjection\{ContainerBuilder, Definition, Reference};
+use Symfony\Component\DependencyInjection\Extension\Extension;
+use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
+use Twig\Environment;
+use Twig\Loader\FilesystemLoader;
+
+final class FlowPostgreSqlExtension extends Extension
+{
+    #[\Override]
+    public function getAlias() : string
+    {
+        return 'flow_postgresql';
+    }
+
+    /**
+     * @param array<array-key, mixed> $configs
+     */
+    public function load(array $configs, ContainerBuilder $container) : void
+    {
+        $configuration = new Configuration();
+
+        /** @var array{connections: array<string, array{dsn: string, telemetry?: array{service_id: string, clock_service_id: ?string, trace_queries: bool, trace_transactions: bool, collect_metrics: bool, log_queries: bool, max_query_length: int, include_parameters: bool, max_parameters: int, max_parameter_length: int}}>, migrations: array{enabled: bool, directory: string, namespace: string, table_name: string, table_schema: string, migration_file_name: string, rollback_file_name: string, all_or_nothing: bool, generate_rollback: bool}, catalog_providers: list<array{catalog_provider_id: ?string, catalog: ?array<string, mixed>}>} $config */
+        $config = $this->processConfiguration($configuration, $configs);
+
+        $isFirst = true;
+        $connectionNames = \array_keys($config['connections']);
+
+        foreach ($config['connections'] as $name => $connectionConfig) {
+            $this->registerConnection($name, $connectionConfig, $container, $isFirst);
+            $isFirst = false;
+        }
+
+        $this->registerCatalogProviders($config['catalog_providers'] ?? [], $container);
+
+        $container->setParameter('flow.postgresql.default_connection', $connectionNames[0]);
+
+        $loader = new PhpFileLoader($container, new FileLocator(__DIR__ . '/../Resources/config'));
+        $loader->load('database.php');
+
+        if ($config['migrations']['enabled']) {
+            $isFirst = true;
+
+            foreach ($connectionNames as $name) {
+                $this->registerMigrations($name, $config['migrations'], $container, $isFirst);
+                $isFirst = false;
+            }
+
+            $container->setParameter('flow.postgresql.migrations.connections', $connectionNames);
+            $container->setParameter('flow.postgresql.migrations.default_connection', $connectionNames[0]);
+
+            $loader->load('migrations.php');
+        }
+    }
+
+    /**
+     * @param list<array{catalog_provider_id: ?string, catalog: ?array<string, mixed>}> $catalogProviders
+     */
+    private function registerCatalogProviders(array $catalogProviders, ContainerBuilder $container) : void
+    {
+        $configProviderServiceIds = [];
+
+        foreach ($catalogProviders as $i => $providerConfig) {
+            if (\array_key_exists('catalog', $providerConfig) && $providerConfig['catalog'] !== null) {
+                $providerDef = new Definition(ArrayCatalogProvider::class, [$providerConfig['catalog']]);
+                $providerDef->addTag('flow.postgresql.catalog_provider');
+                $container->setDefinition("flow.postgresql.catalog_provider.{$i}", $providerDef);
+            } elseif (\array_key_exists('catalog_provider_id', $providerConfig) && $providerConfig['catalog_provider_id'] !== null) {
+                $configProviderServiceIds[] = type_string()->assert($providerConfig['catalog_provider_id']);
+            }
+        }
+
+        if ($configProviderServiceIds !== []) {
+            $container->setParameter('flow.postgresql.catalog_provider.service_ids', $configProviderServiceIds);
+        }
+    }
+
+    /**
+     * @param array{dsn: string, telemetry?: array{service_id: string, clock_service_id: ?string, trace_queries: bool, trace_transactions: bool, collect_metrics: bool, log_queries: bool, max_query_length: int, include_parameters: bool, max_parameters: int, max_parameter_length: int}} $connectionConfig
+     */
+    private function registerConnection(string $name, array $connectionConfig, ContainerBuilder $container, bool $isFirst) : void
+    {
+        $parserDef = new Definition(DsnParser::class);
+        $container->setDefinition("flow.postgresql.{$name}.dsn_parser", $parserDef);
+
+        $paramsDef = new Definition(ConnectionParameters::class);
+        $paramsDef->setFactory([new Reference("flow.postgresql.{$name}.dsn_parser"), 'parse']);
+        $paramsDef->setArguments([$connectionConfig['dsn']]);
+        $container->setDefinition("flow.postgresql.{$name}.connection_parameters", $paramsDef);
+
+        $paramsDef->setPublic(true);
+
+        $clientDef = new Definition(PgSqlClient::class);
+        $clientDef->setFactory([PgSqlClient::class, 'connect']);
+        $clientDef->setArguments([new Reference("flow.postgresql.{$name}.connection_parameters")]);
+        $clientDef->setPublic(true);
+        $container->setDefinition("flow.postgresql.{$name}.client", $clientDef);
+
+        if (\array_key_exists('telemetry', $connectionConfig)) {
+            $this->registerTelemetry($name, $connectionConfig['telemetry'], $container);
+        }
+
+        if ($isFirst) {
+            $container->setAlias(Client::class, "flow.postgresql.{$name}.client");
+            $container->setAlias(ConnectionParameters::class, "flow.postgresql.{$name}.connection_parameters");
+        }
+    }
+
+    /**
+     * @param array{enabled: bool, directory: string, namespace: string, table_name: string, table_schema: string, migration_file_name: string, rollback_file_name: string, all_or_nothing: bool, generate_rollback: bool} $mc
+     */
+    private function registerMigrations(string $name, array $mc, ContainerBuilder $container, bool $isFirst) : void
+    {
+
+        $catalogProviderRef = new Reference('flow.postgresql.migrations.catalog_provider');
+
+        $configDef = new Definition(MigrationsConfiguration::class, [
+            new Reference("flow.postgresql.{$name}.client"),
+            $catalogProviderRef,
+            $mc['directory'],
+            $mc['namespace'],
+            $mc['table_name'],
+            $mc['table_schema'],
+            $mc['migration_file_name'],
+            $mc['rollback_file_name'],
+            $mc['all_or_nothing'],
+            $mc['generate_rollback'],
+        ]);
+        $configDef->setPublic(true);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.configuration", $configDef);
+
+        $fsDef = new Definition(NativeLocalFilesystem::class);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.filesystem", $fsDef);
+
+        $pathDef = new Definition(Path::class);
+        $pathDef->setFactory([Path::class, 'from']);
+        $pathDef->setArguments([$mc['directory']]);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.path", $pathDef);
+
+        $repoDef = new Definition(FilesystemMigrationRepository::class, [
+            new Reference("flow.postgresql.{$name}.migrations.filesystem"),
+            new Reference("flow.postgresql.{$name}.migrations.path"),
+            new Reference("flow.postgresql.{$name}.migrations.configuration"),
+        ]);
+        $repoDef->setPublic(true);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.repository", $repoDef);
+
+        $factoryDef = new Definition(MigrationsFactory::class, [
+            new Reference("flow.postgresql.{$name}.migrations.configuration"),
+            new Reference("flow.postgresql.{$name}.migrations.repository"),
+        ]);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.factory", $factoryDef);
+
+        $migratorDef = new Definition(Migrator::class);
+        $migratorDef->setFactory([new Reference("flow.postgresql.{$name}.migrations.factory"), 'createMigrator']);
+        $migratorDef->setPublic(true);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.migrator", $migratorDef);
+
+        $storeDef = new Definition(MigrationStore::class);
+        $storeDef->setFactory([new Reference("flow.postgresql.{$name}.migrations.factory"), 'createStore']);
+        $storeDef->setPublic(true);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.store", $storeDef);
+
+        $executorDef = new Definition(MigrationExecutor::class);
+        $executorDef->setFactory([new Reference("flow.postgresql.{$name}.migrations.factory"), 'createExecutor']);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.executor", $executorDef);
+
+        $resolverDef = new Definition(VersionResolver::class);
+        $resolverDef->setFactory([new Reference("flow.postgresql.{$name}.migrations.factory"), 'createVersionResolver']);
+        $resolverDef->setPublic(true);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.version_resolver", $resolverDef);
+
+        $twigLoaderDef = new Definition(FilesystemLoader::class, [
+            [__DIR__ . '/../Resources/templates'],
+        ]);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.twig_loader", $twigLoaderDef);
+
+        $twigDef = new Definition(Environment::class, [
+            new Reference("flow.postgresql.{$name}.migrations.twig_loader"),
+        ]);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.twig", $twigDef);
+
+        $versionGenDef = new Definition(TimestampVersionGenerator::class);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.version_generator", $versionGenDef);
+
+        $generatorDef = new Definition(TwigMigrationGenerator::class, [
+            new Reference("flow.postgresql.{$name}.migrations.configuration"),
+            new Reference("flow.postgresql.{$name}.migrations.version_generator"),
+            new Reference("flow.postgresql.{$name}.migrations.twig"),
+            new Reference("flow.postgresql.{$name}.migrations.filesystem"),
+        ]);
+        $generatorDef->setPublic(true);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.generator", $generatorDef);
+
+        $diffGenDef = new Definition(DiffMigrationGenerator::class);
+        $diffGenDef->setFactory([new Reference("flow.postgresql.{$name}.migrations.factory"), 'createDiffGenerator']);
+        $diffGenDef->setArguments([new Reference("flow.postgresql.{$name}.migrations.generator")]);
+        $diffGenDef->setPublic(true);
+        $container->setDefinition("flow.postgresql.{$name}.migrations.diff_generator", $diffGenDef);
+
+        if ($isFirst) {
+            $container->setAlias(MigrationsConfiguration::class, "flow.postgresql.{$name}.migrations.configuration");
+            $container->setAlias(MigrationsFactory::class, "flow.postgresql.{$name}.migrations.factory");
+            $container->setAlias(Migrator::class, "flow.postgresql.{$name}.migrations.migrator");
+            $container->setAlias(MigrationStore::class, "flow.postgresql.{$name}.migrations.store");
+            $container->setAlias(MigrationRepository::class, "flow.postgresql.{$name}.migrations.repository");
+            $container->setAlias(MigrationExecutor::class, "flow.postgresql.{$name}.migrations.executor");
+            $container->setAlias(VersionResolver::class, "flow.postgresql.{$name}.migrations.version_resolver");
+            $container->setAlias(MigrationGenerator::class, "flow.postgresql.{$name}.migrations.generator");
+            $container->setAlias(DiffMigrationGenerator::class, "flow.postgresql.{$name}.migrations.diff_generator");
+        }
+    }
+
+    /**
+     * @param array{service_id: string, clock_service_id: ?string, trace_queries: bool, trace_transactions: bool, collect_metrics: bool, log_queries: bool, max_query_length: int, include_parameters: bool, max_parameters: int, max_parameter_length: int} $telemetryConfig
+     */
+    private function registerTelemetry(string $name, array $telemetryConfig, ContainerBuilder $container) : void
+    {
+        $optionsDef = new Definition(PostgreSqlTelemetryOptions::class, [
+            $telemetryConfig['trace_queries'],
+            $telemetryConfig['trace_transactions'],
+            $telemetryConfig['collect_metrics'],
+            $telemetryConfig['log_queries'],
+            $telemetryConfig['max_query_length'],
+            $telemetryConfig['include_parameters'],
+            $telemetryConfig['max_parameters'],
+            $telemetryConfig['max_parameter_length'],
+        ]);
+        $container->setDefinition("flow.postgresql.{$name}.telemetry.options", $optionsDef);
+
+        if ($telemetryConfig['clock_service_id'] !== null) {
+            $clockRef = new Reference($telemetryConfig['clock_service_id']);
+        } else {
+            $container->setDefinition("flow.postgresql.{$name}.telemetry.clock", new Definition(SystemClock::class));
+            $clockRef = new Reference("flow.postgresql.{$name}.telemetry.clock");
+        }
+
+        $configDef = new Definition(PostgreSqlTelemetryConfig::class, [
+            new Reference($telemetryConfig['service_id']),
+            $clockRef,
+            new Reference("flow.postgresql.{$name}.telemetry.options"),
+        ]);
+        $container->setDefinition("flow.postgresql.{$name}.telemetry.config", $configDef);
+
+        $traceableDef = new Definition(TraceableClient::class, [
+            new Reference("flow.postgresql.{$name}.client.telemetry.inner"),
+            new Reference("flow.postgresql.{$name}.telemetry.config"),
+        ]);
+        $traceableDef->setDecoratedService("flow.postgresql.{$name}.client");
+        $traceableDef->setPublic(true);
+        $container->setDefinition("flow.postgresql.{$name}.client.telemetry", $traceableDef);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/FlowPostgreSqlBundle.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/FlowPostgreSqlBundle.php
new file mode 100644
index 0000000000..7b66df2526
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/FlowPostgreSqlBundle.php
@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Attribute\AsCatalogProvider;
+use Flow\Bridge\Symfony\PostgreSqlBundle\DependencyInjection\Compiler\CatalogProviderPass;
+use Flow\Bridge\Symfony\PostgreSqlBundle\DependencyInjection\FlowPostgreSqlExtension;
+use Symfony\Component\DependencyInjection\{ChildDefinition, ContainerBuilder};
+use Symfony\Component\DependencyInjection\Extension\ExtensionInterface;
+use Symfony\Component\HttpKernel\Bundle\Bundle;
+
+final class FlowPostgreSqlBundle extends Bundle
+{
+    #[\Override]
+    public function build(ContainerBuilder $container) : void
+    {
+        parent::build($container);
+
+        $container->addCompilerPass(new CatalogProviderPass());
+
+        $container->registerAttributeForAutoconfiguration(
+            AsCatalogProvider::class,
+            static function (ChildDefinition $definition, AsCatalogProvider $attribute, \Reflector $reflector) : void {
+                $definition->addTag('flow.postgresql.catalog_provider');
+            },
+        );
+    }
+
+    #[\Override]
+    public function getContainerExtension() : ExtensionInterface
+    {
+        return new FlowPostgreSqlExtension();
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Generator/TwigMigrationGenerator.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Generator/TwigMigrationGenerator.php
new file mode 100644
index 0000000000..0f2eb4ddf7
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Generator/TwigMigrationGenerator.php
@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Generator;
+
+use Flow\Filesystem\{Filesystem, Path};
+use Flow\PostgreSql\Migrations\{Configuration, Version, VersionGenerator};
+use Flow\PostgreSql\Migrations\Generator\MigrationGenerator;
+use Twig\Environment;
+
+final readonly class TwigMigrationGenerator implements MigrationGenerator
+{
+    public function __construct(
+        private Configuration $configuration,
+        private VersionGenerator $versionGenerator,
+        private Environment $twig,
+        private Filesystem $filesystem,
+    ) {
+    }
+
+    public function generateDataMigration(?string $name = null) : Version
+    {
+        $version = $this->versionGenerator->generate();
+        $directory = $this->migrationDirectory($version, $name);
+
+        $this->filesystem->writeTo(Path::from($directory . '/' . $this->configuration->migrationFileName))
+            ->append($this->twig->render('data_migration.php.twig', ['namespace' => $this->configuration->migrationsNamespace]))
+            ->close();
+
+        if ($this->configuration->generateRollback) {
+            $this->filesystem->writeTo(Path::from($directory . '/' . $this->configuration->rollbackFileName))
+                ->append($this->twig->render('data_rollback.php.twig', ['namespace' => $this->configuration->migrationsNamespace]))
+                ->close();
+        }
+
+        return $version;
+    }
+
+    /**
+     * @param list<string> $upSql
+     * @param null|list<string> $downSql
+     */
+    public function generateSchemaMigration(?string $name, array $upSql, ?array $downSql = null) : Version
+    {
+        $version = $this->versionGenerator->generate();
+        $directory = $this->migrationDirectory($version, $name);
+
+        $this->filesystem->writeTo(Path::from($directory . '/' . $this->configuration->migrationFileName))
+            ->append($this->twig->render('schema_migration.php.twig', [
+                'namespace' => $this->configuration->migrationsNamespace,
+                'queries' => $upSql,
+            ]))
+            ->close();
+
+        if ($downSql !== null) {
+            $this->filesystem->writeTo(Path::from($directory . '/' . $this->configuration->rollbackFileName))
+                ->append($this->twig->render('schema_rollback.php.twig', [
+                    'namespace' => $this->configuration->migrationsNamespace,
+                    'queries' => $downSql,
+                ]))
+                ->close();
+        }
+
+        return $version;
+    }
+
+    private function migrationDirectory(Version $version, ?string $name) : string
+    {
+        if ($name === null) {
+            return $this->configuration->migrationsDirectory . '/' . $version;
+        }
+
+        return $this->configuration->migrationsDirectory . '/' . $version . '_' . $name;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Repository/FilesystemMigrationRepository.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Repository/FilesystemMigrationRepository.php
new file mode 100644
index 0000000000..d8f84f4be9
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Repository/FilesystemMigrationRepository.php
@@ -0,0 +1,87 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Repository;
+
+use Flow\Filesystem\{Filesystem, Path};
+use Flow\Filesystem\Path\Filter\KeepAll;
+use Flow\PostgreSql\Migrations\{Configuration, Migration, Rollback, Version};
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Repository\{AvailableMigration, AvailableMigrations, MigrationRepository};
+
+final readonly class FilesystemMigrationRepository implements MigrationRepository
+{
+    public function __construct(
+        private Filesystem $filesystem,
+        private Path $migrationsDirectory,
+        private Configuration $configuration,
+    ) {
+    }
+
+    public function all() : AvailableMigrations
+    {
+        $pattern = Path::from($this->migrationsDirectory->path() . '/*');
+        $migrations = [];
+
+        foreach ($this->filesystem->list($pattern, new KeepAll()) as $entry) {
+            if ($entry->isFile()) {
+                continue;
+            }
+
+            $dirName = $entry->path->basename();
+
+            if (\preg_match('/^(\w+?)_(.+)$/', $dirName, $matches) === 1) {
+                $version = Version::fromString($matches[1]);
+                $name = $matches[2];
+            } elseif (\preg_match('/^(\w+)$/', $dirName, $matches) === 1) {
+                $version = Version::fromString($matches[1]);
+                $name = $matches[1];
+            } else {
+                continue;
+            }
+
+            $migrations[] = $this->loadMigration($entry->path, $version, $name);
+        }
+
+        return new AvailableMigrations(...$migrations);
+    }
+
+    public function get(Version $version) : AvailableMigration
+    {
+        return $this->all()->get($version);
+    }
+
+    public function has(Version $version) : bool
+    {
+        return $this->all()->has($version);
+    }
+
+    private function loadMigration(Path $directoryPath, Version $version, string $name) : AvailableMigration
+    {
+        $migrationPath = Path::from($directoryPath->path() . '/' . $this->configuration->migrationFileName);
+
+        if ($this->filesystem->status($migrationPath) === null) {
+            throw MigrationException::missingMigrationFile($directoryPath->path());
+        }
+
+        $migration = require $migrationPath->path();
+
+        if (!$migration instanceof Migration) {
+            throw MigrationException::invalidDataMigration($migrationPath->path());
+        }
+
+        $rollback = null;
+        $rollbackPath = Path::from($directoryPath->path() . '/' . $this->configuration->rollbackFileName);
+
+        if ($this->filesystem->status($rollbackPath) !== null) {
+            $rollback = require $rollbackPath->path();
+
+            if (!$rollback instanceof Rollback) {
+                throw MigrationException::invalidRollback($rollbackPath->path());
+            }
+        }
+
+        return new AvailableMigration($version, $name, $migration, $rollback);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/config/database.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/config/database.php
new file mode 100644
index 0000000000..fe0349b21b
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/config/database.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+use function Symfony\Component\DependencyInjection\Loader\Configurator\{param, service};
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\{CreateDatabaseCommand, DropDatabaseCommand, RunSqlCommand};
+use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+
+return static function (ContainerConfigurator $container) : void {
+    $services = $container->services();
+
+    $services->set('flow.postgresql.command.database_create', CreateDatabaseCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.database_drop', DropDatabaseCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.sql_run', RunSqlCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.default_connection')])
+        ->tag('console.command');
+};
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/config/migrations.php b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/config/migrations.php
new file mode 100644
index 0000000000..023bd1d695
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/config/migrations.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+use function Symfony\Component\DependencyInjection\Loader\Configurator\{param, service};
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\{CurrentCommand,
+    DiffCommand,
+    ExecuteCommand,
+    GenerateCommand,
+    LatestCommand,
+    ListCommand,
+    MigrateCommand,
+    StatusCommand,
+    UpToDateCommand};
+use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+
+return static function (ContainerConfigurator $container) : void {
+    $services = $container->services();
+
+    $services->set('flow.postgresql.command.current', CurrentCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.migrations.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.latest', LatestCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.migrations.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.status', StatusCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.migrations.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.list', ListCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.migrations.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.migrate', MigrateCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.migrations.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.execute', ExecuteCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.migrations.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.diff', DiffCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.migrations.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.generate', GenerateCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.migrations.default_connection')])
+        ->tag('console.command');
+
+    $services->set('flow.postgresql.command.up_to_date', UpToDateCommand::class)
+        ->args([service('service_container'), param('flow.postgresql.migrations.default_connection')])
+        ->tag('console.command');
+};
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/data_migration.php.twig b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/data_migration.php.twig
new file mode 100644
index 0000000000..12178a9ece
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/data_migration.php.twig
@@ -0,0 +1,22 @@
+{% autoescape false %}<?php
+
+declare(strict_types=1);
+
+namespace {{ namespace }};
+
+use Flow\PostgreSql\Migrations\Migration;
+use Flow\PostgreSql\Migrations\MigrationContext;
+
+return new class implements Migration
+{
+    public function migrate(MigrationContext $context) : void
+    {
+        // TODO: implement
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
+{% endautoescape %}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/data_rollback.php.twig b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/data_rollback.php.twig
new file mode 100644
index 0000000000..75f0bb1c48
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/data_rollback.php.twig
@@ -0,0 +1,22 @@
+{% autoescape false %}<?php
+
+declare(strict_types=1);
+
+namespace {{ namespace }};
+
+use Flow\PostgreSql\Migrations\MigrationContext;
+use Flow\PostgreSql\Migrations\Rollback;
+
+return new class implements Rollback
+{
+    public function rollback(MigrationContext $context) : void
+    {
+        // TODO: implement
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
+{% endautoescape %}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/schema_migration.php.twig b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/schema_migration.php.twig
new file mode 100644
index 0000000000..5d8697058f
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/schema_migration.php.twig
@@ -0,0 +1,24 @@
+{% autoescape false %}<?php
+
+declare(strict_types=1);
+
+namespace {{ namespace }};
+
+use Flow\PostgreSql\Migrations\Migration;
+use Flow\PostgreSql\Migrations\MigrationContext;
+
+return new class implements Migration
+{
+    public function migrate(MigrationContext $context) : void
+    {
+{% for query in queries %}
+        $context->client->execute('{{ query|replace({"'": "\\'"}) }}');
+{% endfor %}
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
+{% endautoescape %}
diff --git a/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/schema_rollback.php.twig b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/schema_rollback.php.twig
new file mode 100644
index 0000000000..39b7b18630
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates/schema_rollback.php.twig
@@ -0,0 +1,24 @@
+{% autoescape false %}<?php
+
+declare(strict_types=1);
+
+namespace {{ namespace }};
+
+use Flow\PostgreSql\Migrations\MigrationContext;
+use Flow\PostgreSql\Migrations\Rollback;
+
+return new class implements Rollback
+{
+    public function rollback(MigrationContext $context) : void
+    {
+{% for query in queries %}
+        $context->client->execute('{{ query|replace({"'": "\\'"}) }}');
+{% endfor %}
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
+{% endautoescape %}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Context/SymfonyContext.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Context/SymfonyContext.php
new file mode 100644
index 0000000000..053867185d
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Context/SymfonyContext.php
@@ -0,0 +1,88 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Context;
+
+use function Flow\Types\DSL\type_instance_of;
+use Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Fixtures\TestKernel;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\Filesystem\Filesystem;
+
+final class SymfonyContext
+{
+    private ?TestKernel $kernel = null;
+
+    /**
+     * @param array{config?: callable(TestKernel): void} $options
+     */
+    public function bootKernel(array $options = []) : TestKernel
+    {
+        if ($this->kernel !== null) {
+            $this->shutdown();
+        }
+
+        $this->kernel = new TestKernel('test', false);
+
+        if (isset($options['config']) && \is_callable($options['config'])) {
+            $options['config']($this->kernel);
+        }
+
+        $this->kernel->boot();
+
+        return $this->kernel;
+    }
+
+    public function getContainer() : ContainerInterface
+    {
+        if ($this->kernel === null) {
+            throw new \LogicException('Kernel has not been booted. Call bootKernel() first.');
+        }
+
+        return $this->kernel->getContainer();
+    }
+
+    public function getKernel() : TestKernel
+    {
+        if ($this->kernel === null) {
+            throw new \LogicException('Kernel has not been booted. Call bootKernel() first.');
+        }
+
+        return $this->kernel;
+    }
+
+    /**
+     * @template T of object
+     *
+     * @param class-string<T> $typeClass
+     *
+     * @return T
+     */
+    public function getService(string $serviceId, string $typeClass) : object
+    {
+        return type_instance_of($typeClass)->assert($this->getContainer()->get($serviceId));
+    }
+
+    public function shutdown() : void
+    {
+        if ($this->kernel === null) {
+            return;
+        }
+
+        $cacheDir = $this->kernel->getCacheDir();
+        $logDir = $this->kernel->getLogDir();
+
+        $this->kernel->shutdown();
+        $this->kernel = null;
+
+        $filesystem = new Filesystem();
+
+        if ($filesystem->exists($cacheDir)) {
+            $filesystem->remove($cacheDir);
+        }
+
+        if ($filesystem->exists($logDir)) {
+            $filesystem->remove($logDir);
+        }
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260401120000_create_users/migration.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260401120000_create_users/migration.php
new file mode 100644
index 0000000000..c3b783e29b
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260401120000_create_users/migration.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext};
+
+return new class implements Migration {
+    public function migrate(MigrationContext $context) : void
+    {
+        $context->client->execute('CREATE TABLE users (id SERIAL PRIMARY KEY, name VARCHAR(255) NOT NULL)');
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260401120000_create_users/rollback.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260401120000_create_users/rollback.php
new file mode 100644
index 0000000000..91742b3bf1
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260401120000_create_users/rollback.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{MigrationContext, Rollback};
+
+return new class implements Rollback {
+    public function rollback(MigrationContext $context) : void
+    {
+        $context->client->execute('DROP TABLE users');
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260402100000_seed_data/migration.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260402100000_seed_data/migration.php
new file mode 100644
index 0000000000..6f4d905717
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260402100000_seed_data/migration.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext};
+
+return new class implements Migration {
+    public function migrate(MigrationContext $context) : void
+    {
+        $context->client->execute("INSERT INTO users (name) VALUES ('seed')");
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260402100000_seed_data/rollback.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260402100000_seed_data/rollback.php
new file mode 100644
index 0000000000..2973a2e909
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260402100000_seed_data/rollback.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{MigrationContext, Rollback};
+
+return new class implements Rollback {
+    public function rollback(MigrationContext $context) : void
+    {
+        $context->client->execute("DELETE FROM users WHERE name = 'seed'");
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260403090000_add_column/migration.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260403090000_add_column/migration.php
new file mode 100644
index 0000000000..e450697b6b
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixture/migrations/20260403090000_add_column/migration.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext};
+
+return new class implements Migration {
+    public function migrate(MigrationContext $context) : void
+    {
+        $context->client->execute('ALTER TABLE users ADD COLUMN email VARCHAR(255)');
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/AttributeTestCatalogProvider.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/AttributeTestCatalogProvider.php
new file mode 100644
index 0000000000..2600611e53
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/AttributeTestCatalogProvider.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Fixtures;
+
+use function Flow\PostgreSql\DSL\{schema, schema_column_integer, schema_table};
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Attribute\AsCatalogProvider;
+use Flow\PostgreSql\Schema\{Catalog, CatalogProvider};
+
+#[AsCatalogProvider]
+final class AttributeTestCatalogProvider implements CatalogProvider
+{
+    public function get() : Catalog
+    {
+        return new Catalog([
+            schema('public', [
+                schema_table('attribute_test', [
+                    schema_column_integer('id', nullable: false),
+                ]),
+            ]),
+        ]);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/SimpleTestCatalogProvider.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/SimpleTestCatalogProvider.php
new file mode 100644
index 0000000000..0f725480e1
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/SimpleTestCatalogProvider.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Fixtures;
+
+use function Flow\PostgreSql\DSL\{schema, schema_column_serial, schema_column_varchar, schema_primary_key, schema_table};
+
+use Flow\PostgreSql\Schema\{Catalog, CatalogProvider};
+
+final class SimpleTestCatalogProvider implements CatalogProvider
+{
+    public function get() : Catalog
+    {
+        return new Catalog([
+            schema('public', [
+                schema_table('test_users', [
+                    schema_column_serial('id'),
+                    schema_column_varchar('name', 255, false),
+                ], schema_primary_key(['id'])),
+            ]),
+        ]);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/TestKernel.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/TestKernel.php
new file mode 100644
index 0000000000..9cbfb1cf27
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/TestKernel.php
@@ -0,0 +1,136 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Fixtures;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\FlowPostgreSqlBundle;
+use Symfony\Component\Config\Loader\LoaderInterface;
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\HttpKernel\Bundle\BundleInterface;
+use Symfony\Component\HttpKernel\Kernel;
+
+final class TestKernel extends Kernel
+{
+    /** @var array<class-string<BundleInterface>> */
+    private array $testBundles = [];
+
+    /** @var array<string> */
+    private array $testConfigs = [];
+
+    /** @var array<callable(ContainerBuilder): void> */
+    private array $testContainerConfigurators = [];
+
+    /** @var array<string, array<string, mixed>> */
+    private array $testExtensionConfigs = [];
+
+    private readonly string $testId;
+
+    public function __construct(string $environment = 'test', bool $debug = true)
+    {
+        $this->testId = \bin2hex(\random_bytes(8));
+
+        parent::__construct($environment, $debug);
+    }
+
+    /**
+     * @param class-string<BundleInterface> $bundleClass
+     */
+    public function addTestBundle(string $bundleClass) : void
+    {
+        $this->testBundles[] = $bundleClass;
+    }
+
+    public function addTestConfig(string $configPath) : void
+    {
+        $this->testConfigs[] = $configPath;
+    }
+
+    /**
+     * @param callable(ContainerBuilder): void $configurator
+     */
+    public function addTestContainerConfigurator(callable $configurator) : void
+    {
+        $this->testContainerConfigurators[] = $configurator;
+    }
+
+    /**
+     * @param array<string, mixed> $config
+     */
+    public function addTestExtensionConfig(string $extension, array $config) : void
+    {
+        $this->testExtensionConfigs[$extension] = \array_merge(
+            $this->testExtensionConfigs[$extension] ?? [],
+            $config
+        );
+    }
+
+    #[\Override]
+    public function getCacheDir() : string
+    {
+        return \sys_get_temp_dir() . '/flow_postgresql_bundle_test/' . $this->environment . '/' . $this->testId . '/cache';
+    }
+
+    #[\Override]
+    public function getLogDir() : string
+    {
+        return \sys_get_temp_dir() . '/flow_postgresql_bundle_test/' . $this->environment . '/' . $this->testId . '/log';
+    }
+
+    #[\Override]
+    public function getProjectDir() : string
+    {
+        return __DIR__ . '/..';
+    }
+
+    public function registerBundles() : iterable
+    {
+        yield new FlowPostgreSqlBundle();
+
+        foreach ($this->testBundles as $bundleClass) {
+            yield new $bundleClass();
+        }
+    }
+
+    public function registerContainerConfiguration(LoaderInterface $loader) : void
+    {
+        foreach ($this->testConfigs as $configPath) {
+            $loader->load($configPath);
+        }
+
+        $loader->load(function (ContainerBuilder $container) : void {
+            foreach ($this->testExtensionConfigs as $extension => $config) {
+                $container->loadFromExtension($extension, $config);
+            }
+
+            foreach ($this->testContainerConfigurators as $configurator) {
+                $configurator($container);
+            }
+
+            $container->setParameter('kernel.secret', 'test_secret_' . $this->testId);
+        });
+    }
+
+    protected function build(ContainerBuilder $container) : void
+    {
+        parent::build($container);
+
+        $container->addCompilerPass(new class implements CompilerPassInterface {
+            public function process(ContainerBuilder $container) : void
+            {
+                foreach ($container->getDefinitions() as $id => $definition) {
+                    if (\str_starts_with($id, 'flow.postgresql') || \str_starts_with($id, 'test.')) {
+                        $definition->setPublic(true);
+                    }
+                }
+
+                foreach ($container->getAliases() as $id => $alias) {
+                    if (\str_starts_with($id, 'Flow\\PostgreSql\\') || \str_starts_with($id, 'Flow\\Bridge\\Symfony\\PostgreSqlBundle\\') || \str_starts_with($id, 'flow.postgresql')) {
+                        $alias->setPublic(true);
+                    }
+                }
+            }
+        });
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/VoidTelemetryFactory.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/VoidTelemetryFactory.php
new file mode 100644
index 0000000000..2f8d51a40a
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Fixtures/VoidTelemetryFactory.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Fixtures;
+
+use Flow\Telemetry\Context\MemoryContextStorage;
+use Flow\Telemetry\Logger\LoggerProvider;
+use Flow\Telemetry\Meter\MeterProvider;
+use Flow\Telemetry\Provider\Clock\SystemClock;
+use Flow\Telemetry\Provider\Void\{VoidLogProcessor, VoidMetricProcessor, VoidSpanProcessor};
+use Flow\Telemetry\{Resource, Telemetry};
+use Flow\Telemetry\Tracer\TracerProvider;
+
+final class VoidTelemetryFactory
+{
+    public static function create() : Telemetry
+    {
+        $clock = new SystemClock();
+        $contextStorage = new MemoryContextStorage();
+
+        return new Telemetry(
+            Resource::create([]),
+            new TracerProvider(new VoidSpanProcessor(), $clock, $contextStorage),
+            new MeterProvider(new VoidMetricProcessor(), $clock),
+            new LoggerProvider(new VoidLogProcessor(), $clock, $contextStorage),
+        );
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CommandTestCase.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CommandTestCase.php
new file mode 100644
index 0000000000..0be2a3c559
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CommandTestCase.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use PHPUnit\Framework\TestCase;
+
+abstract class CommandTestCase extends TestCase
+{
+    protected CommandTestContext $context;
+
+    protected function setUp() : void
+    {
+        $this->context = new CommandTestContext();
+        $this->context->bootWithMigrations();
+    }
+
+    protected function tearDown() : void
+    {
+        $this->context->shutdown();
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CommandTestContext.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CommandTestContext.php
new file mode 100644
index 0000000000..14c3021b4f
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CommandTestContext.php
@@ -0,0 +1,219 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use function Flow\Filesystem\DSL\{native_local_filesystem, path};
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Context\SymfonyContext;
+use Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Fixtures\{SimpleTestCatalogProvider, TestKernel};
+use Flow\Filesystem\Local\NativeLocalFilesystem;
+use Flow\Filesystem\Path\Filter\KeepAll;
+use Flow\PostgreSql\Client\DsnParser;
+use Flow\PostgreSql\Client\Infrastructure\PgSql\PgSqlClient;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\{ContainerBuilder, ContainerInterface};
+
+final class CommandTestContext
+{
+    public NativeLocalFilesystem $filesystem;
+
+    public string $migrationsDir;
+
+    public SymfonyContext $symfonyContext;
+
+    public string $testDsn;
+
+    public function __construct()
+    {
+        $this->symfonyContext = new SymfonyContext();
+        $this->filesystem = native_local_filesystem();
+        $this->testDsn = \getenv('PGSQL_DATABASE_URL') ?: 'postgresql://postgres:postgres@localhost:5432/postgres';
+        $this->migrationsDir = \sys_get_temp_dir() . '/flow_test_migrations_' . \bin2hex(\random_bytes(4));
+        \mkdir($this->migrationsDir, 0755, true);
+
+        $client = PgSqlClient::connect((new DsnParser())->parse($this->testDsn));
+        $client->execute('DROP TABLE IF EXISTS test_users, flow_migrations_test CASCADE');
+        $client->close();
+    }
+
+    public function bootForDatabaseManagement(string $targetDatabase) : void
+    {
+        $targetDsn = \preg_replace('#/[^/?]+(\?|$)#', '/' . $targetDatabase . '$1', $this->testDsn);
+
+        $this->symfonyContext->bootKernel([
+            'config' => static function (TestKernel $kernel) use ($targetDsn) : void {
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => $targetDsn,
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+    }
+
+    public function bootWithMigrations() : void
+    {
+        $this->symfonyContext->bootKernel([
+            'config' => function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('test.catalog_provider', SimpleTestCatalogProvider::class)
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => $this->testDsn,
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => $this->migrationsDir,
+                        'namespace' => 'FlowTest\\Migrations',
+                        'table_name' => 'flow_migrations_test',
+                    ],
+                    'catalog_providers' => [
+                        ['catalog_provider_id' => 'test.catalog_provider'],
+                    ],
+                ]);
+            },
+        ]);
+    }
+
+    public function bootWithMigrationsForDatabase(string $database) : void
+    {
+        $targetDsn = \preg_replace('#/[^/?]+(\?|$)#', '/' . $database . '$1', $this->testDsn);
+
+        $this->symfonyContext->bootKernel([
+            'config' => function (TestKernel $kernel) use ($targetDsn) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('test.catalog_provider', SimpleTestCatalogProvider::class)
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => $targetDsn,
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => $this->migrationsDir,
+                        'namespace' => 'FlowTest\\Migrations',
+                        'table_name' => 'flow_migrations_test',
+                    ],
+                    'catalog_providers' => [
+                        ['catalog_provider_id' => 'test.catalog_provider'],
+                    ],
+                ]);
+            },
+        ]);
+    }
+
+    public function container() : ContainerInterface
+    {
+        return $this->symfonyContext->getContainer();
+    }
+
+    public function createDatabase(string $name) : void
+    {
+        $client = PgSqlClient::connect((new DsnParser())->parse($this->testDsn)->withDatabase('postgres'));
+        $client->execute("CREATE DATABASE \"{$name}\"");
+        $client->close();
+    }
+
+    public function databaseExists(string $name) : bool
+    {
+        $client = PgSqlClient::connect((new DsnParser())->parse($this->testDsn)->withDatabase('postgres'));
+        $count = $client->fetchScalarInt('SELECT COUNT(*) FROM pg_database WHERE datname = $1', [$name]);
+        $client->close();
+
+        return $count > 0;
+    }
+
+    public function dropDatabase(string $name) : void
+    {
+        $client = PgSqlClient::connect((new DsnParser())->parse($this->testDsn)->withDatabase('postgres'));
+        $client->execute('SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = $1 AND pid <> pg_backend_pid()', [$name]);
+        $client->execute("DROP DATABASE IF EXISTS \"{$name}\"");
+        $client->close();
+    }
+
+    public function fileContent(string $filePath) : string
+    {
+        return $this->filesystem->readFrom(path($filePath))->content();
+    }
+
+    public function fileExists(string $filePath) : bool
+    {
+        return $this->filesystem->status(path($filePath)) !== null;
+    }
+
+    public function generateDiffMigration() : string
+    {
+        /** @var Command $command */
+        $command = $this->container()->get('flow.postgresql.command.diff');
+        $tester = new CommandTester($command);
+        $tester->execute(['name' => 'create_test_users']);
+
+        \preg_match('/Generated migration: (\S+)/', $tester->getDisplay(), $matches);
+
+        return $matches[1];
+    }
+
+    public function migrationDirs(string $pattern) : array
+    {
+        $dirs = [];
+
+        foreach ($this->filesystem->list(path($this->migrationsDir . '/' . $pattern), new KeepAll()) as $status) {
+            if ($status->isDirectory()) {
+                $dirs[] = $status->path->path();
+            }
+        }
+
+        return $dirs;
+    }
+
+    public function runMigrate() : void
+    {
+        /** @var Command $command */
+        $command = $this->container()->get('flow.postgresql.command.migrate');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['yes']);
+        $tester->execute([]);
+    }
+
+    public function shutdown() : void
+    {
+        $this->symfonyContext->shutdown();
+
+        $client = PgSqlClient::connect((new DsnParser())->parse($this->testDsn));
+        $client->execute('DROP TABLE IF EXISTS test_users, flow_migrations_test, flow_sql_test CASCADE');
+        $client->close();
+
+        $this->filesystem->rm(path($this->migrationsDir));
+    }
+
+    public function tableExists(string $table, string $schema = 'public') : bool
+    {
+        $client = PgSqlClient::connect((new DsnParser())->parse($this->testDsn));
+        $result = $client->fetch('SELECT 1 FROM information_schema.tables WHERE table_schema = $1 AND table_name = $2', [$schema, $table]);
+        $client->close();
+
+        return $result !== null;
+    }
+
+    public function tableExistsInDatabase(string $database, string $table, string $schema = 'public') : bool
+    {
+        $targetDsn = \preg_replace('#/[^/?]+(\?|$)#', '/' . $database . '$1', $this->testDsn);
+        $client = PgSqlClient::connect((new DsnParser())->parse($targetDsn));
+        $result = $client->fetch('SELECT 1 FROM information_schema.tables WHERE table_schema = $1 AND table_name = $2', [$schema, $table]);
+        $client->close();
+
+        return $result !== null;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CreateDatabaseCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CreateDatabaseCommandTest.php
new file mode 100644
index 0000000000..7144bf6a8c
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CreateDatabaseCommandTest.php
@@ -0,0 +1,78 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class CreateDatabaseCommandTest extends TestCase
+{
+    public function test_create_fails_when_database_already_exists() : void
+    {
+        $context = new CommandTestContext();
+        $testDbName = 'flow_test_create_' . \bin2hex(\random_bytes(4));
+
+        try {
+            $context->createDatabase($testDbName);
+            $context->bootForDatabaseManagement($testDbName);
+
+            /** @var Command $command */
+            $command = $context->container()->get('flow.postgresql.command.database_create');
+            $tester = new CommandTester($command);
+            $tester->execute([]);
+
+            self::assertSame(Command::FAILURE, $tester->getStatusCode());
+            self::assertStringContainsString('already exists', $tester->getDisplay());
+        } finally {
+            $context->dropDatabase($testDbName);
+            $context->shutdown();
+        }
+    }
+
+    public function test_create_with_if_not_exists_succeeds_when_database_already_exists() : void
+    {
+        $context = new CommandTestContext();
+        $testDbName = 'flow_test_create_' . \bin2hex(\random_bytes(4));
+
+        try {
+            $context->createDatabase($testDbName);
+            $context->bootForDatabaseManagement($testDbName);
+
+            /** @var Command $command */
+            $command = $context->container()->get('flow.postgresql.command.database_create');
+            $tester = new CommandTester($command);
+            $tester->execute(['--if-not-exists' => true]);
+
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+            self::assertTrue($context->databaseExists($testDbName));
+        } finally {
+            $context->dropDatabase($testDbName);
+            $context->shutdown();
+        }
+    }
+
+    public function test_creates_database() : void
+    {
+        $context = new CommandTestContext();
+        $testDbName = 'flow_test_create_' . \bin2hex(\random_bytes(4));
+
+        try {
+            $context->bootForDatabaseManagement($testDbName);
+
+            /** @var Command $command */
+            $command = $context->container()->get('flow.postgresql.command.database_create');
+            $tester = new CommandTester($command);
+            $tester->execute([]);
+
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+            self::assertStringContainsString($testDbName, $tester->getDisplay());
+            self::assertTrue($context->databaseExists($testDbName));
+        } finally {
+            $context->dropDatabase($testDbName);
+            $context->shutdown();
+        }
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CurrentCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CurrentCommandTest.php
new file mode 100644
index 0000000000..e97662c874
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/CurrentCommandTest.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class CurrentCommandTest extends CommandTestCase
+{
+    public function test_shows_current_version_after_migration() : void
+    {
+        $version = $this->context->generateDiffMigration();
+        $this->context->runMigrate();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.current');
+        $tester = new CommandTester($command);
+        $tester->execute([]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString($version, $tester->getDisplay());
+        self::assertTrue($this->context->tableExists('flow_migrations_test'));
+        self::assertTrue($this->context->tableExists('test_users'));
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/DiffCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/DiffCommandTest.php
new file mode 100644
index 0000000000..36939896d7
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/DiffCommandTest.php
@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class DiffCommandTest extends CommandTestCase
+{
+    public function test_generates_schema_migration() : void
+    {
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.diff');
+        $tester = new CommandTester($command);
+        $tester->execute(['name' => 'create_test_users']);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('Generated migration:', $tester->getDisplay());
+
+        $dirs = $this->context->migrationDirs('*_create_test_users');
+        self::assertCount(1, $dirs);
+
+        $migrationDir = $dirs[0];
+        self::assertTrue($this->context->fileExists($migrationDir . '/migration.php'));
+        self::assertTrue($this->context->fileExists($migrationDir . '/rollback.php'));
+
+        $migrationContent = $this->context->fileContent($migrationDir . '/migration.php');
+        self::assertStringContainsString('CREATE TABLE', $migrationContent);
+        self::assertStringContainsString('test_users', $migrationContent);
+        self::assertStringContainsString('implements Migration', $migrationContent);
+
+        $rollbackContent = $this->context->fileContent($migrationDir . '/rollback.php');
+        self::assertStringContainsString('DROP TABLE', $rollbackContent);
+        self::assertStringContainsString('implements Rollback', $rollbackContent);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/DropDatabaseCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/DropDatabaseCommandTest.php
new file mode 100644
index 0000000000..0be98c1353
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/DropDatabaseCommandTest.php
@@ -0,0 +1,102 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class DropDatabaseCommandTest extends TestCase
+{
+    public function test_drop_requires_force() : void
+    {
+        $context = new CommandTestContext();
+        $testDbName = 'flow_test_drop_' . \bin2hex(\random_bytes(4));
+
+        try {
+            $context->bootForDatabaseManagement($testDbName);
+
+            /** @var Command $command */
+            $command = $context->container()->get('flow.postgresql.command.database_drop');
+            $tester = new CommandTester($command);
+            $tester->execute([]);
+
+            self::assertSame(Command::FAILURE, $tester->getStatusCode());
+            self::assertStringContainsString('--force', $tester->getDisplay());
+        } finally {
+            $context->shutdown();
+        }
+    }
+
+    public function test_drop_with_if_exists_succeeds_when_database_missing() : void
+    {
+        $context = new CommandTestContext();
+        $testDbName = 'flow_test_drop_nonexistent_' . \bin2hex(\random_bytes(4));
+
+        try {
+            self::assertFalse($context->databaseExists($testDbName));
+
+            $context->bootForDatabaseManagement($testDbName);
+
+            /** @var Command $command */
+            $command = $context->container()->get('flow.postgresql.command.database_drop');
+            $tester = new CommandTester($command);
+            $tester->execute(['--force' => true, '--if-exists' => true]);
+
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        } finally {
+            $context->shutdown();
+        }
+    }
+
+    public function test_drops_database() : void
+    {
+        $context = new CommandTestContext();
+        $testDbName = 'flow_test_drop_' . \bin2hex(\random_bytes(4));
+
+        try {
+            $context->createDatabase($testDbName);
+            self::assertTrue($context->databaseExists($testDbName));
+
+            $context->bootForDatabaseManagement($testDbName);
+
+            /** @var Command $command */
+            $command = $context->container()->get('flow.postgresql.command.database_drop');
+            $tester = new CommandTester($command);
+            $tester->execute(['--force' => true]);
+
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+            self::assertStringContainsString($testDbName, $tester->getDisplay());
+            self::assertFalse($context->databaseExists($testDbName));
+        } finally {
+            $context->dropDatabase($testDbName);
+            $context->shutdown();
+        }
+    }
+
+    public function test_drops_postgres_database() : void
+    {
+        $context = new CommandTestContext();
+        $testDbName = 'flow_test_postgres_drop_' . \bin2hex(\random_bytes(4));
+
+        try {
+            $context->createDatabase($testDbName);
+            self::assertTrue($context->databaseExists($testDbName));
+
+            $context->bootForDatabaseManagement($testDbName);
+
+            /** @var Command $command */
+            $command = $context->container()->get('flow.postgresql.command.database_drop');
+            $tester = new CommandTester($command);
+            $tester->execute(['--force' => true]);
+
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+            self::assertFalse($context->databaseExists($testDbName));
+        } finally {
+            $context->dropDatabase($testDbName);
+            $context->shutdown();
+        }
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/ExecuteCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/ExecuteCommandTest.php
new file mode 100644
index 0000000000..8d1a5d559c
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/ExecuteCommandTest.php
@@ -0,0 +1,73 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class ExecuteCommandTest extends CommandTestCase
+{
+    public function test_execute_cancelled_when_user_declines() : void
+    {
+        $version = $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.execute');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['no']);
+        $tester->execute(['version' => $version]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('cancelled', $tester->getDisplay());
+        self::assertFalse($this->context->tableExists('test_users'));
+    }
+
+    public function test_execute_skips_confirm_in_non_interactive_mode() : void
+    {
+        $version = $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.execute');
+        $tester = new CommandTester($command);
+        $tester->execute(['version' => $version], ['interactive' => false]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertTrue($this->context->tableExists('test_users'));
+    }
+
+    public function test_executes_migration_down() : void
+    {
+        $version = $this->context->generateDiffMigration();
+        $this->context->runMigrate();
+
+        self::assertTrue($this->context->tableExists('test_users'));
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.execute');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['yes']);
+        $tester->execute(['version' => $version, '--down' => true]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('DOWN', $tester->getDisplay());
+        self::assertFalse($this->context->tableExists('test_users'));
+    }
+
+    public function test_executes_migration_up() : void
+    {
+        $version = $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.execute');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['yes']);
+        $tester->execute(['version' => $version, '--up' => true]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('UP', $tester->getDisplay());
+        self::assertStringContainsString($version, $tester->getDisplay());
+        self::assertTrue($this->context->tableExists('test_users'));
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/FullLifecycleTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/FullLifecycleTest.php
new file mode 100644
index 0000000000..c2bb3bfd0b
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/FullLifecycleTest.php
@@ -0,0 +1,88 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class FullLifecycleTest extends TestCase
+{
+    public function test_create_drop_create_diff_migrate_prev_next_latest() : void
+    {
+        $context = new CommandTestContext();
+        $testDbName = 'flow_test_lifecycle_' . \bin2hex(\random_bytes(4));
+
+        try {
+            $context->createDatabase($testDbName);
+            self::assertTrue($context->databaseExists($testDbName));
+
+            $context->dropDatabase($testDbName);
+            self::assertFalse($context->databaseExists($testDbName));
+
+            $context->createDatabase($testDbName);
+            self::assertTrue($context->databaseExists($testDbName));
+
+            $context->bootWithMigrationsForDatabase($testDbName);
+
+            $diffCommand = $context->container()->get('flow.postgresql.command.diff');
+            $tester = new CommandTester($diffCommand);
+            $tester->execute(['name' => 'initial_schema', '--from-empty-schema' => true]);
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+            self::assertStringContainsString('Generated migration', $tester->getDisplay());
+
+            $migrateCommand = $context->container()->get('flow.postgresql.command.migrate');
+            $tester = new CommandTester($migrateCommand);
+            $tester->setInputs(['yes']);
+            $tester->execute([]);
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode(), $tester->getDisplay());
+            self::assertStringContainsString('UP', $tester->getDisplay());
+            self::assertTrue($context->tableExistsInDatabase($testDbName, 'test_users'));
+
+            $tester = new CommandTester($migrateCommand);
+            $tester->setInputs(['yes']);
+            $tester->execute(['version' => 'prev']);
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+            self::assertStringContainsString('DOWN', $tester->getDisplay());
+            self::assertFalse($context->tableExistsInDatabase($testDbName, 'test_users'));
+
+            $tester = new CommandTester($migrateCommand);
+            $tester->setInputs(['yes']);
+            $tester->execute(['version' => 'next']);
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+            self::assertStringContainsString('UP', $tester->getDisplay());
+            self::assertTrue($context->tableExistsInDatabase($testDbName, 'test_users'));
+
+            $tester = new CommandTester($migrateCommand);
+            $tester->execute([]);
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+            self::assertStringContainsString('Already up to date', $tester->getDisplay());
+        } finally {
+            $context->dropDatabase($testDbName);
+            $context->shutdown();
+        }
+    }
+
+    public function test_migrate_with_no_migrations_available() : void
+    {
+        $context = new CommandTestContext();
+        $testDbName = 'flow_test_empty_' . \bin2hex(\random_bytes(4));
+
+        try {
+            $context->createDatabase($testDbName);
+            $context->bootWithMigrationsForDatabase($testDbName);
+
+            $migrateCommand = $context->container()->get('flow.postgresql.command.migrate');
+            $tester = new CommandTester($migrateCommand);
+            $tester->execute([]);
+
+            self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+            self::assertStringContainsString('No migrations found', $tester->getDisplay());
+        } finally {
+            $context->dropDatabase($testDbName);
+            $context->shutdown();
+        }
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/GenerateCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/GenerateCommandTest.php
new file mode 100644
index 0000000000..7a71fbdd97
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/GenerateCommandTest.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class GenerateCommandTest extends CommandTestCase
+{
+    public function test_generates_blank_migration() : void
+    {
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.generate');
+        $tester = new CommandTester($command);
+        $tester->execute(['name' => 'add_email_index']);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('Generated migration:', $tester->getDisplay());
+
+        $dirs = $this->context->migrationDirs('*_add_email_index');
+        self::assertCount(1, $dirs);
+        self::assertTrue($this->context->fileExists($dirs[0] . '/migration.php'));
+        self::assertTrue($this->context->fileExists($dirs[0] . '/rollback.php'));
+        self::assertStringContainsString('implements Migration', $this->context->fileContent($dirs[0] . '/migration.php'));
+        self::assertStringContainsString('implements Rollback', $this->context->fileContent($dirs[0] . '/rollback.php'));
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/LatestCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/LatestCommandTest.php
new file mode 100644
index 0000000000..e246001733
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/LatestCommandTest.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class LatestCommandTest extends CommandTestCase
+{
+    public function test_shows_latest_available_version() : void
+    {
+        $version = $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.latest');
+        $tester = new CommandTester($command);
+        $tester->execute([]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString($version, $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/ListCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/ListCommandTest.php
new file mode 100644
index 0000000000..94541adb47
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/ListCommandTest.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class ListCommandTest extends CommandTestCase
+{
+    public function test_lists_pending_migration() : void
+    {
+        $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.list');
+        $tester = new CommandTester($command);
+        $tester->execute([]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('PENDING', $tester->getDisplay());
+        self::assertStringContainsString('create_test_users', $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/MigrateCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/MigrateCommandTest.php
new file mode 100644
index 0000000000..0fc1768bfb
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/MigrateCommandTest.php
@@ -0,0 +1,136 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class MigrateCommandTest extends CommandTestCase
+{
+    public function test_migrate_cancelled_when_user_declines() : void
+    {
+        $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.migrate');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['no']);
+        $tester->execute([]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('cancelled', $tester->getDisplay());
+        self::assertFalse($this->context->tableExists('test_users'));
+    }
+
+    public function test_migrate_dry_run_does_not_apply_changes() : void
+    {
+        $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.migrate');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['yes']);
+        $tester->execute(['--dry-run' => true]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('Dry run completed', $tester->getDisplay());
+        self::assertFalse($this->context->tableExists('test_users'));
+    }
+
+    public function test_migrate_first_rolls_back_to_first_version() : void
+    {
+        $this->context->generateDiffMigration();
+        $this->context->runMigrate();
+
+        self::assertTrue($this->context->tableExists('test_users'));
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.migrate');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['yes']);
+        $tester->execute(['version' => 'first']);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('Already up to date', $tester->getDisplay());
+    }
+
+    public function test_migrate_latest_applies_all_pending() : void
+    {
+        $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.migrate');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['yes']);
+        $tester->execute([]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('UP', $tester->getDisplay());
+        self::assertTrue($this->context->tableExists('test_users'));
+        self::assertTrue($this->context->tableExists('flow_migrations_test'));
+    }
+
+    public function test_migrate_latest_shows_up_to_date_when_nothing_pending() : void
+    {
+        $this->context->generateDiffMigration();
+        $this->context->runMigrate();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.migrate');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['yes']);
+        $tester->execute([]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('Already up to date', $tester->getDisplay());
+    }
+
+    public function test_migrate_next_applies_one_step() : void
+    {
+        $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.migrate');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['yes']);
+        $tester->execute(['version' => 'next']);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('UP', $tester->getDisplay());
+        self::assertTrue($this->context->tableExists('test_users'));
+    }
+
+    public function test_migrate_prev_rolls_back_last_migration() : void
+    {
+        $this->context->generateDiffMigration();
+        $this->context->runMigrate();
+
+        self::assertTrue($this->context->tableExists('test_users'));
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.migrate');
+        $tester = new CommandTester($command);
+        $tester->setInputs(['yes']);
+        $tester->execute(['version' => 'prev']);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('DOWN', $tester->getDisplay());
+        self::assertFalse($this->context->tableExists('test_users'));
+    }
+
+    public function test_migrate_skips_confirm_in_non_interactive_mode() : void
+    {
+        $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.migrate');
+        $tester = new CommandTester($command);
+        $tester->execute([], ['interactive' => false]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('UP', $tester->getDisplay());
+        self::assertTrue($this->context->tableExists('test_users'));
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/RunSqlCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/RunSqlCommandTest.php
new file mode 100644
index 0000000000..0e7ed3641c
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/RunSqlCommandTest.php
@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class RunSqlCommandTest extends CommandTestCase
+{
+    public function test_runs_ddl_and_verifies_table_created() : void
+    {
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.sql_run');
+        $tester = new CommandTester($command);
+        $tester->execute(['sql' => 'CREATE TABLE flow_sql_test (id SERIAL PRIMARY KEY, name TEXT NOT NULL)']);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertTrue($this->context->tableExists('flow_sql_test'));
+    }
+
+    public function test_runs_select_query_and_returns_data() : void
+    {
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.sql_run');
+        $tester = new CommandTester($command);
+        $tester->execute(['sql' => "SELECT 1 AS result, 'hello' AS greeting"]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('result', $tester->getDisplay());
+        self::assertStringContainsString('greeting', $tester->getDisplay());
+        self::assertStringContainsString('hello', $tester->getDisplay());
+        self::assertStringContainsString('1 row(s) returned', $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/StatusCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/StatusCommandTest.php
new file mode 100644
index 0000000000..45f7cca2a4
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/StatusCommandTest.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class StatusCommandTest extends CommandTestCase
+{
+    public function test_shows_migration_status() : void
+    {
+        $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.status');
+        $tester = new CommandTester($command);
+        $tester->execute([]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        $display = $tester->getDisplay();
+        self::assertStringContainsString('Total migrations', $display);
+        self::assertStringContainsString('Pending', $display);
+        self::assertStringContainsString('pending', $display);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/UpToDateCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/UpToDateCommandTest.php
new file mode 100644
index 0000000000..f7fc5227cc
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/Command/UpToDateCommandTest.php
@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+
+final class UpToDateCommandTest extends CommandTestCase
+{
+    public function test_returns_failure_when_pending() : void
+    {
+        $this->context->generateDiffMigration();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.up_to_date');
+        $tester = new CommandTester($command);
+        $tester->execute([]);
+
+        self::assertSame(Command::FAILURE, $tester->getStatusCode());
+        self::assertStringContainsString('1 pending', $tester->getDisplay());
+    }
+
+    public function test_returns_success_when_up_to_date() : void
+    {
+        $this->context->generateDiffMigration();
+        $this->context->runMigrate();
+
+        /** @var Command $command */
+        $command = $this->context->container()->get('flow.postgresql.command.up_to_date');
+        $tester = new CommandTester($command);
+        $tester->execute([]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('up to date', $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/FlowPostgreSqlExtensionTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/FlowPostgreSqlExtensionTest.php
new file mode 100644
index 0000000000..7c789d54bd
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/FlowPostgreSqlExtensionTest.php
@@ -0,0 +1,638 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\{CreateDatabaseCommand, DropDatabaseCommand, GenerateCommand, RunSqlCommand, UpToDateCommand};
+use Flow\Bridge\Symfony\PostgreSqlBundle\DependencyInjection\FlowPostgreSqlExtension;
+use Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Fixtures\{AttributeTestCatalogProvider, TestKernel, VoidTelemetryFactory};
+use Flow\PostgreSql\Client\Client;
+use Flow\PostgreSql\Client\Telemetry\{PostgreSqlTelemetryOptions, TraceableClient};
+use Flow\PostgreSql\Migrations\{Configuration as MigrationsConfiguration, MigrationsFactory, Migrator, VersionResolver};
+use Flow\PostgreSql\Migrations\Executor\MigrationExecutor;
+use Flow\PostgreSql\Migrations\Generator\{DiffMigrationGenerator, MigrationGenerator};
+use Flow\PostgreSql\Migrations\Repository\MigrationRepository;
+use Flow\PostgreSql\Migrations\Store\MigrationStore;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, SpyClient};
+use Flow\PostgreSql\Schema\{Catalog, ChainCatalogProvider};
+use Flow\Telemetry\Provider\Clock\SystemClock;
+use Flow\Telemetry\Telemetry;
+use PHPUnit\Framework\Attributes\CoversClass;
+use Symfony\Component\DependencyInjection\{ContainerBuilder, Definition, Reference};
+
+#[CoversClass(FlowPostgreSqlExtension::class)]
+final class FlowPostgreSqlExtensionTest extends KernelTestCase
+{
+    public function test_attribute_based_catalog_provider_auto_discovery() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $container->register(AttributeTestCatalogProvider::class, AttributeTestCatalogProvider::class)
+                        ->setAutoconfigured(true)
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => '/tmp/test_migrations',
+                        'namespace' => 'App\\Migrations',
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertTrue($this->getContainer()->has('flow.postgresql.migrations.catalog_provider'));
+        self::assertInstanceOf(ChainCatalogProvider::class, $this->getContainer()->get('flow.postgresql.migrations.catalog_provider'));
+
+        $catalog = $this->getContainer()->get('flow.postgresql.migrations.catalog_provider')->get();
+        self::assertTrue($catalog->get('public')->hasTable('attribute_test'));
+    }
+
+    public function test_catalog_providers_with_inline_catalog() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => '/tmp/test_migrations',
+                        'namespace' => 'App\\Migrations',
+                    ],
+                    'catalog_providers' => [
+                        [
+                            'catalog' => [
+                                'schemas' => [
+                                    [
+                                        'name' => 'public',
+                                        'tables' => [
+                                            [
+                                                'name' => 'users',
+                                                'columns' => [
+                                                    ['name' => 'id', 'type' => ['name' => 'int4', 'schema' => 'pg_catalog'], 'nullable' => false],
+                                                ],
+                                            ],
+                                        ],
+                                    ],
+                                ],
+                            ],
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertTrue($this->getContainer()->has('flow.postgresql.migrations.catalog_provider'));
+        self::assertInstanceOf(ChainCatalogProvider::class, $this->getContainer()->get('flow.postgresql.migrations.catalog_provider'));
+
+        $catalog = $this->getContainer()->get('flow.postgresql.migrations.catalog_provider')->get();
+        self::assertSame(['public'], $catalog->names());
+        self::assertTrue($catalog->get('public')->hasTable('users'));
+    }
+
+    public function test_catalog_providers_with_service_reference() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $catalogDef = new Definition(Catalog::class, [[]]);
+                    $container->register('test.catalog_provider', FakeCatalogProvider::class)
+                        ->addArgument($catalogDef)
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => '/tmp/test_migrations',
+                        'namespace' => 'App\\Migrations',
+                    ],
+                    'catalog_providers' => [
+                        ['catalog_provider_id' => 'test.catalog_provider'],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertTrue($this->getContainer()->has('flow.postgresql.migrations.catalog_provider'));
+        self::assertInstanceOf(ChainCatalogProvider::class, $this->getContainer()->get('flow.postgresql.migrations.catalog_provider'));
+    }
+
+    public function test_class_aliases_for_migration_services() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $catalogDef = new Definition(Catalog::class, [[]]);
+                    $container->register('test.catalog_provider', FakeCatalogProvider::class)
+                        ->addArgument($catalogDef)
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => '/tmp/test_migrations',
+                        'namespace' => 'App\\Migrations',
+                    ],
+                    'catalog_providers' => [
+                        ['catalog_provider_id' => 'test.catalog_provider'],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertTrue($this->getContainer()->has(Migrator::class));
+        self::assertTrue($this->getContainer()->has(MigrationStore::class));
+        self::assertTrue($this->getContainer()->has(MigrationsFactory::class));
+        self::assertTrue($this->getContainer()->has(MigrationsConfiguration::class));
+        self::assertTrue($this->getContainer()->has(MigrationRepository::class));
+        self::assertTrue($this->getContainer()->has(MigrationExecutor::class));
+        self::assertTrue($this->getContainer()->has(VersionResolver::class));
+        self::assertTrue($this->getContainer()->has(MigrationGenerator::class));
+        self::assertTrue($this->getContainer()->has(DiffMigrationGenerator::class));
+    }
+
+    public function test_client_with_telemetry_creates_default_clock_when_not_specified() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $container->register('test.telemetry.factory', VoidTelemetryFactory::class);
+                    $container->register('test.telemetry', Telemetry::class)
+                        ->setFactory([new Reference('test.telemetry.factory'), 'create'])
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                            'telemetry' => [
+                                'service_id' => 'test.telemetry',
+                            ],
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertInstanceOf(TraceableClient::class, $this->getContainer()->get('flow.postgresql.default.client'));
+        self::assertInstanceOf(SystemClock::class, $this->getContainer()->get('flow.postgresql.default.telemetry.clock'));
+    }
+
+    public function test_client_with_telemetry_is_decorated_with_traceable_client() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $container->register('test.telemetry.factory', VoidTelemetryFactory::class);
+                    $container->register('test.telemetry', Telemetry::class)
+                        ->setFactory([new Reference('test.telemetry.factory'), 'create'])
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                            'telemetry' => [
+                                'service_id' => 'test.telemetry',
+                            ],
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertInstanceOf(TraceableClient::class, $this->getContainer()->get('flow.postgresql.default.client'));
+        self::assertInstanceOf(TraceableClient::class, $this->getContainer()->get(Client::class));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.telemetry.options'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.telemetry.config'));
+    }
+
+    public function test_client_with_telemetry_uses_custom_clock_service() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $container->register('test.telemetry.factory', VoidTelemetryFactory::class);
+                    $container->register('test.telemetry', Telemetry::class)
+                        ->setFactory([new Reference('test.telemetry.factory'), 'create'])
+                        ->setPublic(true);
+                    $container->register('test.clock', SystemClock::class)->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                            'telemetry' => [
+                                'service_id' => 'test.telemetry',
+                                'clock_service_id' => 'test.clock',
+                            ],
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertInstanceOf(TraceableClient::class, $this->getContainer()->get('flow.postgresql.default.client'));
+        self::assertFalse($this->getContainer()->has('flow.postgresql.default.telemetry.clock'));
+    }
+
+    public function test_client_without_telemetry_is_not_decorated() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertInstanceOf(SpyClient::class, $this->getContainer()->get('flow.postgresql.default.client'));
+        self::assertFalse($this->getContainer()->has('flow.postgresql.default.telemetry.options'));
+        self::assertFalse($this->getContainer()->has('flow.postgresql.default.telemetry.config'));
+    }
+
+    public function test_connection_with_migrations_registers_migration_services() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $catalogDef = new Definition(Catalog::class, [[]]);
+                    $container->register('test.catalog_provider', FakeCatalogProvider::class)
+                        ->addArgument($catalogDef)
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => '/tmp/test_migrations',
+                        'namespace' => 'App\\Migrations',
+                    ],
+                    'catalog_providers' => [
+                        ['catalog_provider_id' => 'test.catalog_provider'],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.migrations.configuration'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.migrations.factory'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.migrations.migrator'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.migrations.store'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.migrations.repository'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.migrations.generator'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.migrations.diff_generator'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.migrations.version_resolver'));
+    }
+
+    public function test_connection_without_migrations_has_no_migration_services() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertFalse($this->getContainer()->has('flow.postgresql.default.migrations.migrator'));
+    }
+
+    public function test_database_commands_registered_for_any_connection() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                ]);
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                });
+            },
+        ]);
+
+        self::assertInstanceOf(CreateDatabaseCommand::class, $this->getContainer()->get('flow.postgresql.command.database_create'));
+        self::assertInstanceOf(DropDatabaseCommand::class, $this->getContainer()->get('flow.postgresql.command.database_drop'));
+        self::assertInstanceOf(RunSqlCommand::class, $this->getContainer()->get('flow.postgresql.command.sql_run'));
+    }
+
+    public function test_first_connection_gets_class_aliases() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $container->register('flow.postgresql.reporting.client', SpyClient::class)->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                        'reporting' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/reporting',
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertInstanceOf(SpyClient::class, $this->getContainer()->get(Client::class));
+    }
+
+    public function test_migration_commands_registered_when_migrations_enabled() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $catalogDef = new Definition(Catalog::class, [[]]);
+                    $container->register('test.catalog_provider', FakeCatalogProvider::class)
+                        ->addArgument($catalogDef)
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => '/tmp/test_migrations',
+                        'namespace' => 'App\\Migrations',
+                    ],
+                    'catalog_providers' => [
+                        ['catalog_provider_id' => 'test.catalog_provider'],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertTrue($this->getContainer()->has('flow.postgresql.command.current'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.command.latest'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.command.status'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.command.list'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.command.migrate'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.command.execute'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.command.diff'));
+    }
+
+    public function test_migration_configuration_values_propagated() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $catalogDef = new Definition(Catalog::class, [[]]);
+                    $container->register('test.catalog_provider', FakeCatalogProvider::class)
+                        ->addArgument($catalogDef)
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => '/tmp/custom_migrations',
+                        'namespace' => 'Custom\\Migrations',
+                        'table_name' => 'custom_migrations_table',
+                        'table_schema' => 'custom_schema',
+                    ],
+                    'catalog_providers' => [
+                        ['catalog_provider_id' => 'test.catalog_provider'],
+                    ],
+                ]);
+            },
+        ]);
+
+        /** @var MigrationsConfiguration $configuration */
+        $configuration = $this->getContainer()->get('flow.postgresql.default.migrations.configuration');
+
+        self::assertSame('/tmp/custom_migrations', $configuration->migrationsDirectory);
+        self::assertSame('Custom\\Migrations', $configuration->migrationsNamespace);
+        self::assertSame('custom_migrations_table', $configuration->tableName);
+        self::assertSame('custom_schema', $configuration->tableSchema);
+    }
+
+    public function test_migration_generate_and_up_to_date_commands_registered() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $catalogDef = new Definition(Catalog::class, [[]]);
+                    $container->register('test.catalog_provider', FakeCatalogProvider::class)
+                        ->addArgument($catalogDef)
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                    'migrations' => [
+                        'enabled' => true,
+                        'directory' => '/tmp/test_migrations',
+                        'namespace' => 'App\\Migrations',
+                    ],
+                    'catalog_providers' => [
+                        ['catalog_provider_id' => 'test.catalog_provider'],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertInstanceOf(GenerateCommand::class, $this->getContainer()->get('flow.postgresql.command.generate'));
+        self::assertInstanceOf(UpToDateCommand::class, $this->getContainer()->get('flow.postgresql.command.up_to_date'));
+    }
+
+    public function test_multiple_connections_register_separate_clients() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $container->register('flow.postgresql.reporting.client', SpyClient::class)->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                        'reporting' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/reporting',
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertTrue($this->getContainer()->has('flow.postgresql.default.client'));
+        self::assertTrue($this->getContainer()->has('flow.postgresql.reporting.client'));
+        self::assertInstanceOf(SpyClient::class, $this->getContainer()->get('flow.postgresql.default.client'));
+        self::assertInstanceOf(SpyClient::class, $this->getContainer()->get('flow.postgresql.reporting.client'));
+    }
+
+    public function test_no_generate_command_without_migrations() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                ]);
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                });
+            },
+        ]);
+
+        self::assertFalse($this->getContainer()->has('flow.postgresql.command.generate'));
+    }
+
+    public function test_no_migration_commands_when_no_migrations() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertFalse($this->getContainer()->has('flow.postgresql.command.current'));
+        self::assertFalse($this->getContainer()->has('flow.postgresql.command.latest'));
+        self::assertFalse($this->getContainer()->has('flow.postgresql.command.status'));
+        self::assertFalse($this->getContainer()->has('flow.postgresql.command.list'));
+        self::assertFalse($this->getContainer()->has('flow.postgresql.command.migrate'));
+        self::assertFalse($this->getContainer()->has('flow.postgresql.command.execute'));
+        self::assertFalse($this->getContainer()->has('flow.postgresql.command.diff'));
+    }
+
+    public function test_single_connection_registers_client() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        self::assertInstanceOf(SpyClient::class, $this->getContainer()->get('flow.postgresql.default.client'));
+        self::assertInstanceOf(SpyClient::class, $this->getContainer()->get(Client::class));
+    }
+
+    public function test_telemetry_options_propagated_to_config() : void
+    {
+        $this->bootKernel([
+            'config' => static function (TestKernel $kernel) : void {
+                $kernel->addTestContainerConfigurator(static function (ContainerBuilder $container) : void {
+                    $container->register('flow.postgresql.default.client', SpyClient::class)->setPublic(true);
+                    $container->register('test.telemetry.factory', VoidTelemetryFactory::class);
+                    $container->register('test.telemetry', Telemetry::class)
+                        ->setFactory([new Reference('test.telemetry.factory'), 'create'])
+                        ->setPublic(true);
+                });
+                $kernel->addTestExtensionConfig('flow_postgresql', [
+                    'connections' => [
+                        'default' => [
+                            'dsn' => 'postgresql://postgres:postgres@localhost:5432/postgres',
+                            'telemetry' => [
+                                'service_id' => 'test.telemetry',
+                                'log_queries' => true,
+                                'include_parameters' => true,
+                                'max_query_length' => 500,
+                            ],
+                        ],
+                    ],
+                ]);
+            },
+        ]);
+
+        /** @var PostgreSqlTelemetryOptions $options */
+        $options = $this->getContainer()->get('flow.postgresql.default.telemetry.options');
+        self::assertInstanceOf(PostgreSqlTelemetryOptions::class, $options);
+        self::assertTrue($options->logQueries);
+        self::assertTrue($options->includeParameters);
+        self::assertSame(500, $options->maxQueryLength);
+        self::assertTrue($options->traceQueries);
+        self::assertTrue($options->traceTransactions);
+        self::assertTrue($options->collectMetrics);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/KernelTestCase.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/KernelTestCase.php
new file mode 100644
index 0000000000..b7d3eb9545
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Integration/KernelTestCase.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Integration;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Context\SymfonyContext;
+use Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Fixtures\TestKernel;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+abstract class KernelTestCase extends TestCase
+{
+    private SymfonyContext $context;
+
+    protected function setUp() : void
+    {
+        $this->context = new SymfonyContext();
+    }
+
+    protected function tearDown() : void
+    {
+        $this->context->shutdown();
+    }
+
+    protected function addCommand(Application $application, Command $command) : void
+    {
+        /** @phpstan-ignore function.alreadyNarrowedType */
+        if (\method_exists($application, 'addCommand')) {
+            $application->addCommand($command);
+        } else {
+            $application->add($command);
+        }
+    }
+
+    /**
+     * @param array{config?: callable(TestKernel): void} $options
+     */
+    protected function bootKernel(array $options = []) : TestKernel
+    {
+        return $this->context->bootKernel($options);
+    }
+
+    protected function getContainer() : ContainerInterface
+    {
+        return $this->context->getContainer();
+    }
+
+    protected function getKernel() : TestKernel
+    {
+        return $this->context->getKernel();
+    }
+
+    protected function symfonyContext() : SymfonyContext
+    {
+        return $this->context;
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/CatalogProvider/ArrayCatalogProviderTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/CatalogProvider/ArrayCatalogProviderTest.php
new file mode 100644
index 0000000000..dc7b3ceabd
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/CatalogProvider/ArrayCatalogProviderTest.php
@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\CatalogProvider;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\CatalogProvider\ArrayCatalogProvider;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\Schema\{Catalog, Column, Extension, Func, FunctionVolatility, Index, MaterializedView, Procedure, Schema, Sequence, Table, View};
+use Flow\PostgreSql\Schema\Constraint\{PrimaryKey, UniqueConstraint};
+use PHPUnit\Framework\TestCase;
+
+final class ArrayCatalogProviderTest extends TestCase
+{
+    public function test_creates_catalog_from_array_data() : void
+    {
+        $catalog = new Catalog([
+            new Schema('public', [
+                new Table(
+                    'public',
+                    'users',
+                    [
+                        new Column('id', ColumnType::bigint(), false),
+                        new Column('email', ColumnType::varchar(255), false),
+                    ],
+                    primaryKey: new PrimaryKey(['id'], 'users_pkey'),
+                ),
+            ]),
+        ]);
+
+        $provider = new ArrayCatalogProvider($catalog->normalize());
+
+        $restored = $provider->get();
+
+        self::assertSame(['public'], $restored->names());
+        self::assertTrue($restored->get('public')->hasTable('users'));
+        self::assertNotNull($restored->get('public')->table('users')->primaryKey);
+        self::assertSame('users_pkey', $restored->get('public')->table('users')->primaryKey->name);
+        self::assertCount(2, $restored->get('public')->table('users')->columns);
+    }
+
+    public function test_creates_catalog_with_all_schema_objects() : void
+    {
+        $catalog = new Catalog([
+            new Schema(
+                'public',
+                tables: [
+                    new Table(
+                        'public',
+                        'users',
+                        [new Column('id', ColumnType::integer(), false)],
+                        primaryKey: new PrimaryKey(['id']),
+                        indexes: [new Index('idx_id', ['id'], unique: true)],
+                        uniqueConstraints: [new UniqueConstraint(['id'], 'uq_id')],
+                    ),
+                ],
+                sequences: [new Sequence('users_id_seq')],
+                views: [new View('active_users', 'SELECT * FROM users')],
+                materializedViews: [new MaterializedView('user_stats', 'SELECT count(*) FROM users')],
+                functions: [new Func('get_user', 'text', ['integer'], 'sql', 'SELECT 1', volatility: FunctionVolatility::STABLE)],
+                procedures: [new Procedure('cleanup', [], 'sql', 'DELETE FROM logs')],
+                extensions: [new Extension('uuid-ossp', '1.1')],
+            ),
+        ]);
+
+        $provider = new ArrayCatalogProvider($catalog->normalize());
+
+        $restored = $provider->get();
+
+        $schema = $restored->get('public');
+        self::assertCount(1, $schema->tables);
+        self::assertCount(1, $schema->sequences);
+        self::assertCount(1, $schema->views);
+        self::assertCount(1, $schema->materializedViews);
+        self::assertCount(1, $schema->functions);
+        self::assertCount(1, $schema->procedures);
+        self::assertCount(1, $schema->extensions);
+    }
+
+    public function test_creates_empty_catalog() : void
+    {
+        $provider = new ArrayCatalogProvider(['schemas' => []]);
+
+        self::assertSame([], $provider->get()->all());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/CreateDatabaseCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/CreateDatabaseCommandTest.php
new file mode 100644
index 0000000000..ab34a7c603
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/CreateDatabaseCommandTest.php
@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\CreateDatabaseCommand;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\DependencyInjection\Container;
+
+final class CreateDatabaseCommandTest extends TestCase
+{
+    public function test_has_correct_command_name() : void
+    {
+        $command = new CreateDatabaseCommand(new Container(), 'default');
+
+        self::assertSame('flow:database:create', $command->getName());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/CurrentCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/CurrentCommandTest.php
new file mode 100644
index 0000000000..d78217d5e7
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/CurrentCommandTest.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\CurrentCommand;
+use Flow\PostgreSql\Migrations\Tests\Double\FakeMigrationStore;
+use Flow\PostgreSql\Migrations\Version;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class CurrentCommandTest extends TestCase
+{
+    public function test_no_migrations_message() : void
+    {
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.store', new FakeMigrationStore());
+
+        $tester = new CommandTester(new CurrentCommand($container, 'default'));
+        $tester->execute([]);
+
+        self::assertStringContainsString('No migrations have been executed yet.', $tester->getDisplay());
+    }
+
+    public function test_shows_latest_version() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->initialize();
+        $store->complete(Version::fromString('20260401120000'), 10);
+        $store->complete(Version::fromString('20260402100000'), 5);
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.store', $store);
+
+        $tester = new CommandTester(new CurrentCommand($container, 'default'));
+        $tester->execute([]);
+
+        self::assertStringContainsString('20260402100000', $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/DiffCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/DiffCommandTest.php
new file mode 100644
index 0000000000..efc6a9ed2e
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/DiffCommandTest.php
@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\DiffCommand;
+use Flow\PostgreSql\Migrations\{Configuration, Version};
+use Flow\PostgreSql\Migrations\Generator\DiffMigrationGenerator;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, SpyClient, SpyMigrationGenerator};
+use Flow\PostgreSql\Schema\Catalog;
+use Flow\PostgreSql\Schema\Diff\CatalogComparator;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class DiffCommandTest extends TestCase
+{
+    public function test_failure_when_no_changes() : void
+    {
+        $diffGenerator = new DiffMigrationGenerator(
+            new FakeCatalogProvider(new Catalog([])),
+            new FakeCatalogProvider(new Catalog([])),
+            CatalogComparator::create(),
+            new SpyMigrationGenerator(Version::fromString('20260401120000')),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.diff_generator', $diffGenerator);
+        $container->set('flow.postgresql.default.migrations.configuration', new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), '/tmp/migrations', 'App\\Migrations'));
+
+        $tester = new CommandTester(new DiffCommand($container, 'default'));
+        $tester->execute(['name' => 'schema_change']);
+
+        self::assertSame(Command::FAILURE, $tester->getStatusCode());
+        self::assertStringContainsString('No changes detected', $tester->getDisplay());
+    }
+
+    public function test_generates_diff() : void
+    {
+        $generator = new SpyMigrationGenerator(Version::fromString('20260401120000'));
+        $diffGenerator = new DiffMigrationGenerator(
+            new FakeCatalogProvider(new Catalog([])),
+            new FakeCatalogProvider(new Catalog([])),
+            CatalogComparator::create(),
+            $generator,
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.diff_generator', $diffGenerator);
+        $container->set('flow.postgresql.default.migrations.configuration', new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), '/tmp/migrations', 'App\\Migrations'));
+
+        $tester = new CommandTester(new DiffCommand($container, 'default'));
+        $tester->execute(['name' => 'schema_change', '--allow-empty-diff' => true]);
+
+        self::assertStringContainsString('Generated migration: 20260401120000', $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/DropDatabaseCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/DropDatabaseCommandTest.php
new file mode 100644
index 0000000000..2fb7479984
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/DropDatabaseCommandTest.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\DropDatabaseCommand;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class DropDatabaseCommandTest extends TestCase
+{
+    public function test_has_correct_command_name() : void
+    {
+        $command = new DropDatabaseCommand(new Container(), 'default');
+
+        self::assertSame('flow:database:drop', $command->getName());
+    }
+
+    public function test_requires_force_flag() : void
+    {
+        $tester = new CommandTester(new DropDatabaseCommand(new Container(), 'default'));
+        $tester->execute([]);
+
+        self::assertSame(Command::FAILURE, $tester->getStatusCode());
+        self::assertStringContainsString('Use --force to proceed', $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/ExecuteCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/ExecuteCommandTest.php
new file mode 100644
index 0000000000..ff2d2b3a6a
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/ExecuteCommandTest.php
@@ -0,0 +1,73 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\ExecuteCommand;
+use Flow\PostgreSql\Migrations\{Configuration, Migrator, Version};
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FakeMigrationRepository, FakeMigrationStore, SpyClient, SpyMigration, SpyMigrationExecutor, SpyRollback};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class ExecuteCommandTest extends TestCase
+{
+    public function test_dry_run_shows_warning() : void
+    {
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, new FakeMigrationStore(), new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new ExecuteCommand($container, 'default'));
+        $tester->setInputs(['yes']);
+        $tester->execute(['version' => '20260401120000', '--dry-run' => true]);
+
+        self::assertStringContainsString('Dry run completed.', $tester->getDisplay());
+    }
+
+    public function test_executes_migration_down() : void
+    {
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+        );
+
+        $store = new FakeMigrationStore();
+        $store->initialize();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, $store, new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new ExecuteCommand($container, 'default'));
+        $tester->setInputs(['yes']);
+        $tester->execute(['version' => '20260401120000', '--down' => true]);
+
+        $display = $tester->getDisplay();
+        self::assertStringContainsString('DOWN', $display);
+        self::assertStringContainsString('20260401120000', $display);
+    }
+
+    public function test_executes_single_migration() : void
+    {
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, new FakeMigrationStore(), new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new ExecuteCommand($container, 'default'));
+        $tester->setInputs(['yes']);
+        $tester->execute(['version' => '20260401120000']);
+
+        $display = $tester->getDisplay();
+        self::assertStringContainsString('UP', $display);
+        self::assertStringContainsString('20260401120000', $display);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/GenerateCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/GenerateCommandTest.php
new file mode 100644
index 0000000000..9d14a431e7
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/GenerateCommandTest.php
@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\GenerateCommand;
+use Flow\PostgreSql\Migrations\{Configuration, Version};
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, SpyClient, SpyMigrationGenerator};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class GenerateCommandTest extends TestCase
+{
+    public function test_generates_data_migration() : void
+    {
+        $version = Version::fromString('20260401120000');
+        $generator = new SpyMigrationGenerator($version);
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.generator', $generator);
+        $container->set('flow.postgresql.default.migrations.configuration', new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), '/tmp/migrations', 'App\\Migrations'));
+
+        $tester = new CommandTester(new GenerateCommand($container, 'default'));
+        $tester->execute(['name' => 'add_email_index']);
+
+        self::assertSame(0, $tester->getStatusCode());
+        self::assertStringContainsString('20260401120000', $tester->getDisplay());
+        self::assertSame('add_email_index', $generator->lastDataName);
+    }
+
+    public function test_uses_connection_option() : void
+    {
+        $version = Version::fromString('20260402100000');
+        $generator = new SpyMigrationGenerator($version);
+
+        $container = new Container();
+        $container->set('flow.postgresql.other.migrations.generator', $generator);
+        $container->set('flow.postgresql.other.migrations.configuration', new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), '/tmp/migrations', 'App\\Migrations'));
+
+        $tester = new CommandTester(new GenerateCommand($container, 'default'));
+        $tester->execute(['name' => 'create_table', '--connection' => 'other']);
+
+        self::assertSame(0, $tester->getStatusCode());
+        self::assertStringContainsString('20260402100000', $tester->getDisplay());
+        self::assertSame('create_table', $generator->lastDataName);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/LatestCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/LatestCommandTest.php
new file mode 100644
index 0000000000..ba0772951f
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/LatestCommandTest.php
@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\LatestCommand;
+use Flow\PostgreSql\Migrations\{Configuration, Migrator, Version};
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FakeMigrationRepository, FakeMigrationStore, SpyClient, SpyMigration, SpyMigrationExecutor, SpyRollback};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class LatestCommandTest extends TestCase
+{
+    public function test_no_migrations_message() : void
+    {
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator(new FakeMigrationRepository(), new FakeMigrationStore(), new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new LatestCommand($container, 'default'));
+        $tester->execute([]);
+
+        self::assertStringContainsString('No migrations available.', $tester->getDisplay());
+    }
+
+    public function test_shows_latest_version_with_marker() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->initialize();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402100000'), 'seed_data', new SpyMigration(), new SpyRollback()),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, $store, new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new LatestCommand($container, 'default'));
+        $tester->execute([]);
+
+        $display = $tester->getDisplay();
+        self::assertStringContainsString('20260401120000', $display);
+        self::assertStringContainsString('create_users', $display);
+        self::assertStringContainsString('20260402100000', $display);
+        self::assertStringContainsString('seed_data', $display);
+        self::assertStringContainsString('EXECUTED', $display);
+        self::assertStringContainsString('PENDING', $display);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/ListCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/ListCommandTest.php
new file mode 100644
index 0000000000..ef0dd1813c
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/ListCommandTest.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\ListCommand;
+use Flow\PostgreSql\Migrations\{Configuration, Migrator, Version};
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FakeMigrationRepository, FakeMigrationStore, SpyClient, SpyMigration, SpyMigrationExecutor, SpyRollback};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class ListCommandTest extends TestCase
+{
+    public function test_empty_list() : void
+    {
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator(new FakeMigrationRepository(), new FakeMigrationStore(), new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new ListCommand($container, 'default'));
+        $tester->execute([]);
+
+        self::assertStringContainsString('No migrations found', $tester->getDisplay());
+    }
+
+    public function test_lists_migrations_with_states() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->initialize();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402100000'), 'seed_data', new SpyMigration(), new SpyRollback()),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, $store, new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new ListCommand($container, 'default'));
+        $tester->execute([]);
+
+        $display = $tester->getDisplay();
+        self::assertStringContainsString('EXECUTED', $display);
+        self::assertStringContainsString('20260401120000', $display);
+        self::assertStringContainsString('create_users', $display);
+        self::assertStringContainsString('PENDING', $display);
+        self::assertStringContainsString('20260402100000', $display);
+        self::assertStringContainsString('seed_data', $display);
+        self::assertStringContainsString('1 executed', $display);
+        self::assertStringContainsString('1 pending', $display);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/MigrateCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/MigrateCommandTest.php
new file mode 100644
index 0000000000..bacaec3ffa
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/MigrateCommandTest.php
@@ -0,0 +1,100 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\MigrateCommand;
+use Flow\PostgreSql\Migrations\{Configuration, Migrator, Version, VersionResolver};
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FakeMigrationRepository, FakeMigrationStore, SpyClient, SpyMigration, SpyMigrationExecutor, SpyRollback};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class MigrateCommandTest extends TestCase
+{
+    public function test_connection_option() : void
+    {
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+        );
+        $store = new FakeMigrationStore();
+        $store->initialize();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $container = new Container();
+        $container->set('flow.postgresql.other.migrations.migrator', new Migrator($repository, $store, new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+        $container->set('flow.postgresql.other.migrations.version_resolver', new VersionResolver($repository, $store));
+        $container->set('flow.postgresql.other.migrations.configuration', new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), '/tmp/migrations', 'App\\Migrations'));
+
+        $tester = new CommandTester(new MigrateCommand($container, 'default'));
+        $tester->setInputs(['yes']);
+        $tester->execute(['--connection' => 'other']);
+
+        self::assertStringContainsString('Already up to date.', $tester->getDisplay());
+    }
+
+    public function test_dry_run_note() : void
+    {
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, new FakeMigrationStore(), new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+        $container->set('flow.postgresql.default.migrations.version_resolver', new VersionResolver($repository, new FakeMigrationStore()));
+        $container->set('flow.postgresql.default.migrations.configuration', new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), '/tmp/migrations', 'App\\Migrations'));
+
+        $tester = new CommandTester(new MigrateCommand($container, 'default'));
+        $tester->setInputs(['yes']);
+        $tester->execute(['--dry-run' => true]);
+
+        self::assertStringContainsString('Dry run completed.', $tester->getDisplay());
+    }
+
+    public function test_executes_pending_migrations() : void
+    {
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402100000'), 'seed_data', new SpyMigration(), new SpyRollback()),
+        );
+        $store = new FakeMigrationStore();
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, $store, new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+        $container->set('flow.postgresql.default.migrations.version_resolver', new VersionResolver($repository, $store));
+        $container->set('flow.postgresql.default.migrations.configuration', new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), '/tmp/migrations', 'App\\Migrations'));
+
+        $tester = new CommandTester(new MigrateCommand($container, 'default'));
+        $tester->setInputs(['yes']);
+        $tester->execute([]);
+
+        $display = $tester->getDisplay();
+        self::assertStringContainsString('UP', $display);
+        self::assertStringContainsString('20260401120000', $display);
+        self::assertStringContainsString('20260402100000', $display);
+    }
+
+    public function test_no_migrations_to_execute() : void
+    {
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+        );
+        $store = new FakeMigrationStore();
+        $store->initialize();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, $store, new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+        $container->set('flow.postgresql.default.migrations.version_resolver', new VersionResolver($repository, $store));
+        $container->set('flow.postgresql.default.migrations.configuration', new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), '/tmp/migrations', 'App\\Migrations'));
+
+        $tester = new CommandTester(new MigrateCommand($container, 'default'));
+        $tester->setInputs(['yes']);
+        $tester->execute([]);
+
+        self::assertStringContainsString('Already up to date.', $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/RunSqlCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/RunSqlCommandTest.php
new file mode 100644
index 0000000000..6c817e3869
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/RunSqlCommandTest.php
@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\RunSqlCommand;
+use Flow\PostgreSql\Migrations\Tests\Double\SpyClient;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class RunSqlCommandTest extends TestCase
+{
+    public function test_execute_non_select_query() : void
+    {
+        $client = new SpyClient();
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.client', $client);
+
+        $tester = new CommandTester(new RunSqlCommand($container, 'default'));
+        $tester->execute(['sql' => 'DELETE FROM users WHERE id = 1']);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('0 row(s) affected.', $tester->getDisplay());
+        self::assertSame('DELETE FROM users WHERE id = 1', $client->executedQueries[0]['sql']);
+    }
+
+    public function test_uses_connection_option() : void
+    {
+        $client = new SpyClient();
+
+        $container = new Container();
+        $container->set('flow.postgresql.other.client', $client);
+
+        $tester = new CommandTester(new RunSqlCommand($container, 'default'));
+        $tester->execute(['sql' => 'UPDATE users SET active = true', '--connection' => 'other']);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertSame('UPDATE users SET active = true', $client->executedQueries[0]['sql']);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/StatusCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/StatusCommandTest.php
new file mode 100644
index 0000000000..bdd9428b75
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/StatusCommandTest.php
@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\StatusCommand;
+use Flow\PostgreSql\Migrations\{Configuration, Migrator, Version};
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FakeMigrationRepository, FakeMigrationStore, SpyClient, SpyMigration, SpyMigrationExecutor, SpyRollback};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class StatusCommandTest extends TestCase
+{
+    public function test_shows_counts_with_pending() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->initialize();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402100000'), 'seed_data', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260403090000'), 'add_column', new SpyMigration(), null),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, $store, new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new StatusCommand($container, 'default'));
+        $tester->execute([]);
+
+        $display = $tester->getDisplay();
+        self::assertStringContainsString('3', $display);
+        self::assertStringContainsString('1', $display);
+        self::assertStringContainsString('2', $display);
+        self::assertStringContainsString('pending', $display);
+    }
+
+    public function test_shows_success_when_all_executed() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->initialize();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, $store, new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new StatusCommand($container, 'default'));
+        $tester->execute([]);
+
+        self::assertStringContainsString('up to date', $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/UpToDateCommandTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/UpToDateCommandTest.php
new file mode 100644
index 0000000000..17c0f5fdd7
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Command/UpToDateCommandTest.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Command;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Command\UpToDateCommand;
+use Flow\PostgreSql\Migrations\{Configuration, Migrator, Version};
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FakeMigrationRepository, FakeMigrationStore, SpyClient, SpyMigration, SpyMigrationExecutor, SpyRollback};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\DependencyInjection\Container;
+
+final class UpToDateCommandTest extends TestCase
+{
+    public function test_not_up_to_date_returns_failure() : void
+    {
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402100000'), 'seed_data', new SpyMigration(), new SpyRollback()),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, new FakeMigrationStore(), new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new UpToDateCommand($container, 'default'));
+        $tester->execute([]);
+
+        self::assertSame(Command::FAILURE, $tester->getStatusCode());
+        self::assertStringContainsString('2 pending migration(s)', $tester->getDisplay());
+        self::assertStringContainsString('PENDING', $tester->getDisplay());
+    }
+
+    public function test_up_to_date_returns_success() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->initialize();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+        );
+
+        $container = new Container();
+        $container->set('flow.postgresql.default.migrations.migrator', new Migrator($repository, $store, new SpyMigrationExecutor(), $client = new SpyClient(), new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations')));
+
+        $tester = new CommandTester(new UpToDateCommand($container, 'default'));
+        $tester->execute([]);
+
+        self::assertSame(Command::SUCCESS, $tester->getStatusCode());
+        self::assertStringContainsString('up to date', $tester->getDisplay());
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/DependencyInjection/ConfigurationTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/DependencyInjection/ConfigurationTest.php
new file mode 100644
index 0000000000..2e495babe4
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/DependencyInjection/ConfigurationTest.php
@@ -0,0 +1,272 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\DependencyInjection;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\DependencyInjection\Configuration;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
+use Symfony\Component\Config\Definition\Processor;
+
+final class ConfigurationTest extends TestCase
+{
+    public function test_catalog_providers_at_top_level_with_inline_catalog() : void
+    {
+        $catalogData = [
+            'schemas' => [
+                [
+                    'name' => 'public',
+                    'tables' => [
+                        [
+                            'name' => 'users',
+                            'columns' => [
+                                ['name' => 'id', 'type' => ['name' => 'int4', 'schema' => 'pg_catalog'], 'nullable' => false],
+                            ],
+                        ],
+                    ],
+                ],
+            ],
+        ];
+
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                ],
+            ],
+            'migrations' => [
+                'enabled' => true,
+            ],
+            'catalog_providers' => [
+                ['catalog' => $catalogData],
+            ],
+        ]]);
+
+        self::assertCount(1, $config['catalog_providers']);
+        self::assertSame($catalogData, $config['catalog_providers'][0]['catalog']);
+    }
+
+    public function test_catalog_providers_at_top_level_with_service_reference() : void
+    {
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                ],
+            ],
+            'migrations' => [
+                'enabled' => true,
+                'directory' => '/custom/migrations',
+                'namespace' => 'Custom\\Migrations',
+                'table_name' => 'custom_migrations',
+                'table_schema' => 'custom',
+            ],
+            'catalog_providers' => [
+                ['catalog_provider_id' => 'app.catalog_provider'],
+            ],
+        ]]);
+
+        self::assertSame('app.catalog_provider', $config['catalog_providers'][0]['catalog_provider_id']);
+        self::assertSame('/custom/migrations', $config['migrations']['directory']);
+        self::assertSame('Custom\\Migrations', $config['migrations']['namespace']);
+        self::assertSame('custom_migrations', $config['migrations']['table_name']);
+        self::assertSame('custom', $config['migrations']['table_schema']);
+    }
+
+    public function test_catalog_providers_multiple_entries() : void
+    {
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                ],
+            ],
+            'catalog_providers' => [
+                ['catalog' => ['schemas' => []]],
+                ['catalog_provider_id' => 'app.second_provider'],
+            ],
+        ]]);
+
+        self::assertCount(2, $config['catalog_providers']);
+        self::assertSame('app.second_provider', $config['catalog_providers'][1]['catalog_provider_id']);
+    }
+
+    public function test_connections_requires_at_least_one_element() : void
+    {
+        $this->expectException(InvalidConfigurationException::class);
+
+        (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [],
+        ]]);
+    }
+
+    public function test_dsn_is_required() : void
+    {
+        $this->expectException(InvalidConfigurationException::class);
+
+        (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [],
+            ],
+        ]]);
+    }
+
+    public function test_migrations_default_values() : void
+    {
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                ],
+            ],
+            'migrations' => [
+                'enabled' => true,
+            ],
+        ]]);
+
+        self::assertSame('%kernel.project_dir%/migrations', $config['migrations']['directory']);
+        self::assertSame('App\\Migrations', $config['migrations']['namespace']);
+        self::assertSame('flow_migrations', $config['migrations']['table_name']);
+        self::assertSame('public', $config['migrations']['table_schema']);
+        self::assertFalse($config['migrations']['all_or_nothing']);
+        self::assertTrue($config['migrations']['generate_rollback']);
+    }
+
+    public function test_migrations_enabled_without_catalog_providers_is_valid_at_config_level() : void
+    {
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                ],
+            ],
+            'migrations' => [
+                'enabled' => true,
+            ],
+        ]]);
+
+        self::assertTrue($config['migrations']['enabled']);
+    }
+
+    public function test_multiple_connections() : void
+    {
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db1',
+                ],
+                'analytics' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db2',
+                ],
+            ],
+        ]]);
+
+        self::assertArrayHasKey('default', $config['connections']);
+        self::assertArrayHasKey('analytics', $config['connections']);
+        self::assertSame('postgresql://user:pass@localhost:5432/db1', $config['connections']['default']['dsn']);
+        self::assertSame('postgresql://user:pass@localhost:5432/db2', $config['connections']['analytics']['dsn']);
+    }
+
+    public function test_single_connection_with_defaults() : void
+    {
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                ],
+            ],
+        ]]);
+
+        self::assertSame('postgresql://user:pass@localhost:5432/db', $config['connections']['default']['dsn']);
+        self::assertFalse($config['migrations']['enabled']);
+    }
+
+    public function test_telemetry_not_present_by_default() : void
+    {
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                ],
+            ],
+        ]]);
+
+        self::assertArrayNotHasKey('telemetry', $config['connections']['default']);
+    }
+
+    public function test_telemetry_requires_service_id() : void
+    {
+        $this->expectException(InvalidConfigurationException::class);
+
+        (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                    'telemetry' => [],
+                ],
+            ],
+        ]]);
+    }
+
+    public function test_telemetry_with_custom_options() : void
+    {
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                    'telemetry' => [
+                        'service_id' => 'my.telemetry',
+                        'clock_service_id' => 'my.clock',
+                        'trace_queries' => false,
+                        'trace_transactions' => false,
+                        'collect_metrics' => false,
+                        'log_queries' => true,
+                        'max_query_length' => 500,
+                        'include_parameters' => true,
+                        'max_parameters' => 5,
+                        'max_parameter_length' => 50,
+                    ],
+                ],
+            ],
+        ]]);
+
+        $telemetry = $config['connections']['default']['telemetry'];
+        self::assertSame('my.telemetry', $telemetry['service_id']);
+        self::assertSame('my.clock', $telemetry['clock_service_id']);
+        self::assertFalse($telemetry['trace_queries']);
+        self::assertFalse($telemetry['trace_transactions']);
+        self::assertFalse($telemetry['collect_metrics']);
+        self::assertTrue($telemetry['log_queries']);
+        self::assertSame(500, $telemetry['max_query_length']);
+        self::assertTrue($telemetry['include_parameters']);
+        self::assertSame(5, $telemetry['max_parameters']);
+        self::assertSame(50, $telemetry['max_parameter_length']);
+    }
+
+    public function test_telemetry_with_defaults() : void
+    {
+        $config = (new Processor())->processConfiguration(new Configuration(), [[
+            'connections' => [
+                'default' => [
+                    'dsn' => 'postgresql://user:pass@localhost:5432/db',
+                    'telemetry' => [
+                        'service_id' => 'flow.telemetry',
+                    ],
+                ],
+            ],
+        ]]);
+
+        $telemetry = $config['connections']['default']['telemetry'];
+        self::assertSame('flow.telemetry', $telemetry['service_id']);
+        self::assertNull($telemetry['clock_service_id']);
+        self::assertTrue($telemetry['trace_queries']);
+        self::assertTrue($telemetry['trace_transactions']);
+        self::assertTrue($telemetry['collect_metrics']);
+        self::assertFalse($telemetry['log_queries']);
+        self::assertSame(1000, $telemetry['max_query_length']);
+        self::assertFalse($telemetry['include_parameters']);
+        self::assertSame(10, $telemetry['max_parameters']);
+        self::assertSame(100, $telemetry['max_parameter_length']);
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Generator/TwigMigrationGeneratorTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Generator/TwigMigrationGeneratorTest.php
new file mode 100644
index 0000000000..6b609fe4bd
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Generator/TwigMigrationGeneratorTest.php
@@ -0,0 +1,132 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Generator;
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Generator\TwigMigrationGenerator;
+use Flow\Filesystem\Local\NativeLocalFilesystem;
+use Flow\PostgreSql\Migrations\{Configuration, Version};
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FixedVersionGenerator, SpyClient, TemporaryDirectory};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+use Twig\Environment;
+use Twig\Loader\FilesystemLoader;
+
+final class TwigMigrationGeneratorTest extends TestCase
+{
+    public function templatesPath() : string
+    {
+        return \dirname(__DIR__, 8) . '/src/Flow/Bridge/Symfony/PostgreSqlBundle/Resources/templates';
+    }
+
+    public function test_generate_data_migration_creates_files() : void
+    {
+        $tmpDir = new TemporaryDirectory();
+
+        try {
+            $generator = new TwigMigrationGenerator(
+                new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $tmpDir->path, 'App\\Migrations'),
+                new FixedVersionGenerator(Version::fromString('20260401120000')),
+                new Environment(new FilesystemLoader($this->templatesPath())),
+                new NativeLocalFilesystem(),
+            );
+
+            $generator->generateDataMigration('test_migration');
+
+            self::assertFileExists($tmpDir->path . '/20260401120000_test_migration/migration.php');
+            self::assertFileExists($tmpDir->path . '/20260401120000_test_migration/rollback.php');
+            self::assertStringContainsString('App\\Migrations', (string) \file_get_contents($tmpDir->path . '/20260401120000_test_migration/migration.php'));
+            self::assertStringContainsString('App\\Migrations', (string) \file_get_contents($tmpDir->path . '/20260401120000_test_migration/rollback.php'));
+        } finally {
+            $tmpDir->cleanUp();
+        }
+    }
+
+    public function test_generate_data_migration_without_rollback_when_disabled() : void
+    {
+        $tmpDir = new TemporaryDirectory();
+
+        try {
+            $generator = new TwigMigrationGenerator(
+                new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $tmpDir->path, 'App\\Migrations', generateRollback: false),
+                new FixedVersionGenerator(Version::fromString('20260401120000')),
+                new Environment(new FilesystemLoader($this->templatesPath())),
+                new NativeLocalFilesystem(),
+            );
+
+            $generator->generateDataMigration('test_migration');
+
+            self::assertFileExists($tmpDir->path . '/20260401120000_test_migration/migration.php');
+            self::assertFileDoesNotExist($tmpDir->path . '/20260401120000_test_migration/rollback.php');
+        } finally {
+            $tmpDir->cleanUp();
+        }
+    }
+
+    public function test_generate_schema_migration_creates_files() : void
+    {
+        $tmpDir = new TemporaryDirectory();
+
+        try {
+            $generator = new TwigMigrationGenerator(
+                new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $tmpDir->path, 'App\\Migrations'),
+                new FixedVersionGenerator(Version::fromString('20260401120000')),
+                new Environment(new FilesystemLoader($this->templatesPath())),
+                new NativeLocalFilesystem(),
+            );
+
+            $generator->generateSchemaMigration('add_table', ['CREATE TABLE test (id INT)'], ['DROP TABLE test']);
+
+            self::assertFileExists($tmpDir->path . '/20260401120000_add_table/migration.php');
+            self::assertFileExists($tmpDir->path . '/20260401120000_add_table/rollback.php');
+
+            $migrationContent = (string) \file_get_contents($tmpDir->path . '/20260401120000_add_table/migration.php');
+            self::assertStringContainsString('CREATE TABLE test (id INT)', $migrationContent);
+
+            $rollbackContent = (string) \file_get_contents($tmpDir->path . '/20260401120000_add_table/rollback.php');
+            self::assertStringContainsString('DROP TABLE test', $rollbackContent);
+        } finally {
+            $tmpDir->cleanUp();
+        }
+    }
+
+    public function test_generate_schema_migration_without_rollback() : void
+    {
+        $tmpDir = new TemporaryDirectory();
+
+        try {
+            $generator = new TwigMigrationGenerator(
+                new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $tmpDir->path, 'App\\Migrations'),
+                new FixedVersionGenerator(Version::fromString('20260401120000')),
+                new Environment(new FilesystemLoader($this->templatesPath())),
+                new NativeLocalFilesystem(),
+            );
+
+            $generator->generateSchemaMigration('add_table', ['CREATE TABLE test (id INT)']);
+
+            self::assertFileExists($tmpDir->path . '/20260401120000_add_table/migration.php');
+            self::assertFileDoesNotExist($tmpDir->path . '/20260401120000_add_table/rollback.php');
+        } finally {
+            $tmpDir->cleanUp();
+        }
+    }
+
+    public function test_returns_version_from_generator() : void
+    {
+        $tmpDir = new TemporaryDirectory();
+
+        try {
+            $generator = new TwigMigrationGenerator(
+                new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $tmpDir->path, 'App\\Migrations'),
+                new FixedVersionGenerator(Version::fromString('20260401120000')),
+                new Environment(new FilesystemLoader($this->templatesPath())),
+                new NativeLocalFilesystem(),
+            );
+
+            self::assertTrue(Version::fromString('20260401120000')->equals($generator->generateDataMigration('test')));
+        } finally {
+            $tmpDir->cleanUp();
+        }
+    }
+}
diff --git a/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Repository/FilesystemMigrationRepositoryTest.php b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Repository/FilesystemMigrationRepositoryTest.php
new file mode 100644
index 0000000000..3dfb140f05
--- /dev/null
+++ b/src/bridge/symfony/postgresql-bundle/tests/Flow/Bridge/Symfony/PostgreSqlBundle/Tests/Unit/Repository/FilesystemMigrationRepositoryTest.php
@@ -0,0 +1,163 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Bridge\Symfony\PostgreSqlBundle\Tests\Unit\Repository;
+
+use function Flow\Filesystem\DSL\{native_local_filesystem, path};
+
+use Flow\Bridge\Symfony\PostgreSqlBundle\Repository\FilesystemMigrationRepository;
+use Flow\PostgreSql\Migrations\{Configuration, Migration, Rollback, Version};
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, SpyClient, TemporaryDirectory};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+
+final class FilesystemMigrationRepositoryTest extends TestCase
+{
+    public function fixturesPath() : string
+    {
+        return __DIR__ . '/../../Fixture/migrations';
+    }
+
+    public function test_all_migrations_are_loaded_as_migration_instances() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        foreach ($repository->all() as $migration) {
+            self::assertInstanceOf(Migration::class, $migration->migration);
+        }
+    }
+
+    public function test_discovers_all_migrations_from_directory() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        self::assertCount(3, $repository->all());
+    }
+
+    public function test_get_returns_migration_for_existing_version() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        $migration = $repository->get(Version::fromString('20260401120000'));
+
+        self::assertTrue(Version::fromString('20260401120000')->equals($migration->version));
+    }
+
+    public function test_get_throws_on_missing_version() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        $this->expectException(MigrationException::class);
+        $repository->get(Version::fromString('99999999999999'));
+    }
+
+    public function test_has_returns_false_for_missing_version() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        self::assertFalse($repository->has(Version::fromString('99999999999999')));
+    }
+
+    public function test_has_returns_true_for_existing_version() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        self::assertTrue($repository->has(Version::fromString('20260401120000')));
+    }
+
+    public function test_migrations_are_sorted_by_version() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        $items = \iterator_to_array($repository->all());
+
+        self::assertTrue(Version::fromString('20260401120000')->equals($items[0]->version));
+        self::assertTrue(Version::fromString('20260402100000')->equals($items[1]->version));
+        self::assertTrue(Version::fromString('20260403090000')->equals($items[2]->version));
+    }
+
+    public function test_names_are_parsed_from_entry_names() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        self::assertSame('create_users', $repository->get(Version::fromString('20260401120000'))->name);
+        self::assertSame('seed_data', $repository->get(Version::fromString('20260402100000'))->name);
+        self::assertSame('add_column', $repository->get(Version::fromString('20260403090000'))->name);
+    }
+
+    public function test_rollback_is_loaded_when_present() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        self::assertInstanceOf(Rollback::class, $repository->get(Version::fromString('20260401120000'))->rollback);
+    }
+
+    public function test_rollback_is_null_when_absent() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        self::assertNull($repository->get(Version::fromString('20260403090000'))->rollback);
+    }
+
+    public function test_throws_on_invalid_migration() : void
+    {
+        $tmpDir = new TemporaryDirectory();
+
+        try {
+            \mkdir($tmpDir->path . '/20260401120000_test', 0777, true);
+            \file_put_contents($tmpDir->path . '/20260401120000_test/migration.php', '<?php return "not a migration";');
+
+            $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($tmpDir->path), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $tmpDir->path, 'Test'));
+
+            $this->expectException(MigrationException::class);
+            $repository->all();
+        } finally {
+            $tmpDir->cleanUp();
+        }
+    }
+
+    public function test_throws_on_invalid_rollback() : void
+    {
+        $tmpDir = new TemporaryDirectory();
+
+        try {
+            \mkdir($tmpDir->path . '/20260401120000_test', 0777, true);
+            \file_put_contents($tmpDir->path . '/20260401120000_test/migration.php', '<?php return new class implements \Flow\PostgreSql\Migrations\Migration { public function migrate(\Flow\PostgreSql\Migrations\MigrationContext $context): void {} public function transactional(): bool { return true; } };');
+            \file_put_contents($tmpDir->path . '/20260401120000_test/rollback.php', '<?php return "not a rollback";');
+
+            $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($tmpDir->path), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $tmpDir->path, 'Test'));
+
+            $this->expectException(MigrationException::class);
+            $repository->all();
+        } finally {
+            $tmpDir->cleanUp();
+        }
+    }
+
+    public function test_throws_on_missing_migration_file() : void
+    {
+        $tmpDir = new TemporaryDirectory();
+
+        try {
+            \mkdir($tmpDir->path . '/20260401120000_test', 0777, true);
+
+            $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($tmpDir->path), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $tmpDir->path, 'Test'));
+
+            $this->expectException(MigrationException::class);
+            $repository->all();
+        } finally {
+            $tmpDir->cleanUp();
+        }
+    }
+
+    public function test_versions_are_parsed_from_entry_names() : void
+    {
+        $repository = new FilesystemMigrationRepository(native_local_filesystem(), path($this->fixturesPath()), new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), $this->fixturesPath(), 'Test'));
+
+        self::assertTrue($repository->has(Version::fromString('20260401120000')));
+        self::assertTrue($repository->has(Version::fromString('20260402100000')));
+        self::assertTrue($repository->has(Version::fromString('20260403090000')));
+    }
+}
diff --git a/src/bridge/symfony/telemetry-bundle/composer.json b/src/bridge/symfony/telemetry-bundle/composer.json
index 6fe56f9201..83e60f146b 100644
--- a/src/bridge/symfony/telemetry-bundle/composer.json
+++ b/src/bridge/symfony/telemetry-bundle/composer.json
@@ -19,11 +19,11 @@
         "flow-php/telemetry": "self.version",
         "flow-php/symfony-http-foundation-telemetry-bridge": "self.version",
         "psr/clock": "^1.0",
-        "symfony/config": "^6.4 || ^7.3 || ^8.0",
-        "symfony/console": "^6.4 || ^7.3 || ^8.0",
-        "symfony/dependency-injection": "^6.4 || ^7.3 || ^8.0",
+        "symfony/config": "^6.4 || ^7.4 || ^8.0",
+        "symfony/console": "^6.4 || ^7.4 || ^8.0",
+        "symfony/dependency-injection": "^6.4 || ^7.4 || ^8.0",
         "symfony/http-client-contracts": "^3.0",
-        "symfony/http-kernel": "^6.4 || ^7.3 || ^8.0",
+        "symfony/http-kernel": "^6.4 || ^7.4 || ^8.0",
         "symfony/polyfill-mbstring": "^1.33"
     },
     "require-dev": {
@@ -31,9 +31,9 @@
         "flow-php/psr18-telemetry-bridge": "self.version",
         "flow-php/telemetry-otlp-bridge": "self.version",
         "nyholm/psr7": "^1.8",
-        "symfony/framework-bundle": "^6.4 || ^7.3 || ^8.0",
-        "symfony/messenger": "^6.4 || ^7.3 || ^8.0",
-        "symfony/routing": "^6.4 || ^7.3 || ^8.0",
+        "symfony/framework-bundle": "^6.4 || ^7.4 || ^8.0",
+        "symfony/messenger": "^6.4 || ^7.4 || ^8.0",
+        "symfony/routing": "^6.4 || ^7.4 || ^8.0",
         "twig/twig": "^3.0"
     },
     "suggest": {
diff --git a/src/bridge/telemetry/otlp/composer.json b/src/bridge/telemetry/otlp/composer.json
index 0e656db711..7cb4641403 100644
--- a/src/bridge/telemetry/otlp/composer.json
+++ b/src/bridge/telemetry/otlp/composer.json
@@ -25,7 +25,7 @@
         "open-telemetry/gen-otlp-protobuf": "^1.8",
         "google/protobuf": "^4.0",
         "nyholm/psr7": "^1.8",
-        "symfony/http-client": "^6.4 || ^7.3 || ^8.0"
+        "symfony/http-client": "^6.4 || ^7.4 || ^8.0"
     },
     "suggest": {
         "ext-grpc": "Required for gRPC transport",
diff --git a/src/cli/composer.json b/src/cli/composer.json
index 2bcb38ca16..10fa38a310 100644
--- a/src/cli/composer.json
+++ b/src/cli/composer.json
@@ -9,10 +9,10 @@
     ],
     "require": {
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
-        "symfony/console": "^6.4 || ^7.3 || ^8.0",
-        "symfony/http-client": "^6.4 || ^7.3 || ^8.0",
+        "symfony/console": "^6.4 || ^7.4 || ^8.0",
+        "symfony/http-client": "^6.4 || ^7.4 || ^8.0",
         "nyholm/psr7": "^1.8",
-        "symfony/uid": "^6.4 || ^7.3 || ^8.0",
+        "symfony/uid": "^6.4 || ^7.4 || ^8.0",
         "flow-php/etl": "self.version",
         "flow-php/etl-adapter-csv": "self.version",
         "flow-php/etl-adapter-parquet": "self.version",
diff --git a/src/core/etl/composer.json b/src/core/etl/composer.json
index a589a8cf58..29b97cd0ca 100644
--- a/src/core/etl/composer.json
+++ b/src/core/etl/composer.json
@@ -13,14 +13,14 @@
         "ext-json": "*",
         "psr/clock": "^1.0",
         "brick/math": "^0.12 || ^0.13 || ^0.14",
-        "composer-runtime-api": "^2.0",
+        "composer-runtime-api": "^2.2",
         "flow-php/telemetry": "self.version",
         "flow-php/types": "self.version",
         "flow-php/array-dot": "self.version",
         "flow-php/filesystem": "self.version",
         "psr/simple-cache": "^1.0 || ^2.0 || ^3.0",
         "webmozart/glob": "^3.0 || ^4.0",
-        "symfony/string": "^6.4 || ^7.3 || ^8.0"
+        "symfony/string": "^6.4 || ^7.4 || ^8.0"
     },
     "suggest": {
         "ext-bcmath": "BCMath extension for PHP for more precise calculations"
@@ -28,7 +28,7 @@
     "require-dev": {
         "ramsey/uuid": "^4.5",
         "symfony/polyfill-mbstring": "^1.33",
-        "symfony/uid": "^6.4 || ^7.3 || ^8.0"
+        "symfony/uid": "^6.4 || ^7.4 || ^8.0"
     },
     "config": {
         "optimize-autoloader": true,
diff --git a/src/core/etl/src/Flow/ETL/Attribute/Module.php b/src/core/etl/src/Flow/ETL/Attribute/Module.php
index a9a47280c2..f4fdeda92d 100644
--- a/src/core/etl/src/Flow/ETL/Attribute/Module.php
+++ b/src/core/etl/src/Flow/ETL/Attribute/Module.php
@@ -25,6 +25,7 @@ enum Module : string
     case PARQUET = 'PARQUET';
     case PG_QUERY = 'PG_QUERY';
     case POSTGRESQL = 'POSTGRESQL';
+    case POSTGRESQL_MIGRATIONS = 'POSTGRESQL_MIGRATIONS';
     case PSR18_TELEMETRY_BRIDGE = 'PSR18_TELEMETRY_BRIDGE';
     case PSR7_TELEMETRY_BRIDGE = 'PSR7_TELEMETRY_BRIDGE';
     case S3_FILESYSTEM = 'S3_FILESYSTEM';
diff --git a/src/core/etl/tests/Flow/ETL/Tests/Integration/Function/BinaryComparisonsTest.php b/src/core/etl/tests/Flow/ETL/Tests/Integration/Function/BinaryComparisonsTest.php
index c3c491784d..e923c81d3a 100644
--- a/src/core/etl/tests/Flow/ETL/Tests/Integration/Function/BinaryComparisonsTest.php
+++ b/src/core/etl/tests/Flow/ETL/Tests/Integration/Function/BinaryComparisonsTest.php
@@ -26,7 +26,7 @@ public function test_all_comparisons() : void
                 when(ref('a')->equals(ref('b')), lit(true), lit(false))
             )
             ->withEntry(
-                'neq',
+                'ne',
                 when(ref('a')->notEquals(ref('c')), lit(true), lit(false))
             )
             ->withEntry(
@@ -34,7 +34,7 @@ public function test_all_comparisons() : void
                 when(ref('a')->greaterThan(ref('b')), lit(true), lit(false))
             )
             ->withEntry(
-                'gte',
+                'ge',
                 when(ref('a')->greaterThanEqual(ref('b')), lit(true), lit(false))
             )
             ->withEntry(
@@ -42,7 +42,7 @@ public function test_all_comparisons() : void
                 when(ref('a')->lessThan(ref('b')), lit(true), lit(false))
             )
             ->withEntry(
-                'lte',
+                'le',
                 when(ref('a')->lessThanEqual(ref('b')), lit(true), lit(false))
             )
             ->withEntry(
@@ -89,11 +89,11 @@ public function test_all_comparisons() : void
                     'c' => 10,
                     'd' => 'value',
                     'eq' => true,
-                    'neq' => true,
+                    'ne' => true,
                     'gt' => false,
-                    'gte' => true,
+                    'ge' => true,
                     'lt' => false,
-                    'lte' => true,
+                    'le' => true,
                     'in' => true,
                     'same' => true,
                     'not_same' => false,
diff --git a/src/lib/parquet-viewer/composer.json b/src/lib/parquet-viewer/composer.json
index a9a4279f24..9814cb7777 100644
--- a/src/lib/parquet-viewer/composer.json
+++ b/src/lib/parquet-viewer/composer.json
@@ -15,7 +15,7 @@
         "coduo/php-humanizer": "^5.0",
         "flow-php/etl": "self.version",
         "flow-php/parquet": "self.version",
-        "symfony/console": "^6.4 || ^7.3 || ^8.0"
+        "symfony/console": "^6.4 || ^7.4 || ^8.0"
     },
     "config": {
         "optimize-autoloader": true,
diff --git a/src/lib/parquet/composer.json b/src/lib/parquet/composer.json
index a3266fce06..1b9ac084cc 100644
--- a/src/lib/parquet/composer.json
+++ b/src/lib/parquet/composer.json
@@ -14,7 +14,7 @@
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
         "ext-bcmath": "*",
         "ext-zlib": "*",
-        "composer-runtime-api": "^2.0",
+        "composer-runtime-api": "^2.2",
         "flow-php/snappy": "self.version",
         "flow-php/filesystem": "self.version",
         "packaged/thrift": "^0.15.0",
diff --git a/src/lib/postgresql/composer.json b/src/lib/postgresql/composer.json
index 1dbba0d983..4d8d05ea8c 100644
--- a/src/lib/postgresql/composer.json
+++ b/src/lib/postgresql/composer.json
@@ -13,6 +13,7 @@
     "require": {
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
         "flow-php/telemetry": "self.version",
+        "flow-php/types": "self.version",
         "google/protobuf": "^4.0",
         "psr/clock": "^1.0"
     },
@@ -37,8 +38,13 @@
             ]
         },
         "files": [
-            "src/Flow/PostgreSql/DSL/functions.php",
-            "src/stubs.php"
+            "src/Flow/PostgreSql/DSL/client.php",
+            "src/Flow/PostgreSql/DSL/condition.php",
+            "src/Flow/PostgreSql/DSL/parser.php",
+            "src/Flow/PostgreSql/DSL/query.php",
+            "src/Flow/PostgreSql/DSL/schema.php",
+            "src/stubs.php",
+            "src/Flow/PostgreSql/Migrations/DSL/functions.php"
         ]
     },
     "autoload-dev": {
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Client.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Client.php
index 9ee45d7b17..36aa1557bd 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Client.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Client.php
@@ -8,7 +8,7 @@
 use Flow\PostgreSql\Client\Exception\{QueryException, TransactionException};
 use Flow\PostgreSql\Client\Types\ValueConverters;
 use Flow\PostgreSql\Explain\Plan\Plan;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 interface Client
 {
@@ -43,190 +43,184 @@ public function converters() : ValueConverters;
      * Memory efficient - rows are fetched one at a time.
      * Use cursor->map() to map rows to objects.
      *
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException
      */
-    public function cursor(SqlQuery|string $sql, array $parameters = []) : Cursor;
+    public function cursor(Sql|string $sql, array $parameters = []) : Cursor;
 
     /**
      * Execute a statement that modifies data (INSERT, UPDATE, DELETE).
      * Returns the number of affected rows.
      *
-     * @param SqlQuery|string $sql SQL statement or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL statement or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException
      */
-    public function execute(SqlQuery|string $sql, array $parameters = []) : int;
+    public function execute(Sql|string $sql, array $parameters = []) : int;
 
     /**
      * Execute EXPLAIN ANALYZE on a query and return the execution plan.
      * Useful for analyzing query performance.
      *
-     * @param SqlQuery|string $sql SQL query to explain
+     * @param Sql|string $sql SQL query to explain
      * @param array<int, mixed> $parameters Positional parameters
      * @param null|ExplainConfig $config EXPLAIN configuration (defaults to forAnalysis())
      *
      * @throws QueryException
      */
-    public function explain(SqlQuery|string $sql, array $parameters = [], ?ExplainConfig $config = null) : Plan;
+    public function explain(Sql|string $sql, array $parameters = [], ?ExplainConfig $config = null) : Plan;
 
     /**
      * Fetch the first row from query result.
      * Returns null if no rows found.
      *
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException
      *
      * @return null|array<string, mixed>
      */
-    public function fetch(SqlQuery|string $sql, array $parameters = []) : ?array;
+    public function fetch(Sql|string $sql, array $parameters = []) : ?array;
 
     /**
      * Fetch all rows from query result.
      *
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException
      *
      * @return array<int, array<string, mixed>>
      */
-    public function fetchAll(SqlQuery|string $sql, array $parameters = []) : array;
+    public function fetchAll(Sql|string $sql, array $parameters = []) : array;
 
     /**
-     * Fetch all rows and map to objects.
+     * Fetch all rows and map using the provided mapper.
      *
-     * @template T of object
+     * @template T
      *
-     * @param class-string<T> $class Target class for mapping
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param RowMapper<T> $mapper Mapper to apply to each row
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
-     * @param null|RowMapper $mapper Override default mapper for this call
      *
      * @throws QueryException
      *
-     * @return array<int, T>
+     * @return list<T>
      */
     public function fetchAllInto(
-        string $class,
-        SqlQuery|string $sql,
+        RowMapper $mapper,
+        Sql|string $sql,
         array $parameters = [],
-        ?RowMapper $mapper = null,
     ) : array;
 
     /**
-     * Fetch the first row and map to object.
+     * Fetch the first row and map using the provided mapper.
      * Returns null if no rows found.
      *
-     * @template T of object
+     * @template T
      *
-     * @param class-string<T> $class Target class for mapping
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param RowMapper<T> $mapper Mapper to apply to the row
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
-     * @param null|RowMapper $mapper Override default mapper for this call
      *
      * @throws QueryException
      *
      * @return null|T
      */
     public function fetchInto(
-        string $class,
-        SqlQuery|string $sql,
+        RowMapper $mapper,
+        Sql|string $sql,
         array $parameters = [],
-        ?RowMapper $mapper = null,
-    ) : ?object;
+    ) : mixed;
 
     /**
      * Fetch exactly one row. Throws if result has 0 or more than 1 row.
      * Use when you expect precisely one result (e.g., SELECT by primary key).
      *
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException When row count is not exactly 1
      *
      * @return array<string, mixed>
      */
-    public function fetchOne(SqlQuery|string $sql, array $parameters = []) : array;
+    public function fetchOne(Sql|string $sql, array $parameters = []) : array;
 
     /**
-     * Fetch exactly one row and map to object.
+     * Fetch exactly one row and map using the provided mapper.
      * Throws if result has 0 or more than 1 row.
      *
-     * @template T of object
+     * @template T
      *
-     * @param class-string<T> $class Target class for mapping
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param RowMapper<T> $mapper Mapper to apply to the row
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
-     * @param null|RowMapper $mapper Override default mapper for this call
      *
      * @throws QueryException When row count is not exactly 1
      *
      * @return T
      */
     public function fetchOneInto(
-        string $class,
-        SqlQuery|string $sql,
+        RowMapper $mapper,
+        Sql|string $sql,
         array $parameters = [],
-        ?RowMapper $mapper = null,
-    ) : object;
+    ) : mixed;
 
     /**
      * Fetch a single scalar value from the first column of first row.
      * Ideal for COUNT(*), MAX(), MIN(), etc.
      *
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException
      */
-    public function fetchScalar(SqlQuery|string $sql, array $parameters = []) : mixed;
+    public function fetchScalar(Sql|string $sql, array $parameters = []) : mixed;
 
     /**
      * Fetch a single boolean value from the first column of first row.
      *
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException
      */
-    public function fetchScalarBool(SqlQuery|string $sql, array $parameters = []) : bool;
+    public function fetchScalarBool(Sql|string $sql, array $parameters = []) : bool;
 
     /**
      * Fetch a single float value from the first column of first row.
      *
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException
      */
-    public function fetchScalarFloat(SqlQuery|string $sql, array $parameters = []) : float;
+    public function fetchScalarFloat(Sql|string $sql, array $parameters = []) : float;
 
     /**
      * Fetch a single integer value from the first column of first row.
      * Ideal for COUNT(*), MAX(), MIN(), etc.
      *
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException
      */
-    public function fetchScalarInt(SqlQuery|string $sql, array $parameters = []) : int;
+    public function fetchScalarInt(Sql|string $sql, array $parameters = []) : int;
 
     /**
      * Fetch a single string value from the first column of first row.
      *
-     * @param SqlQuery|string $sql SQL query or query builder with $1, $2, ... placeholders
+     * @param Sql|string $sql SQL query or query builder with $1, $2, ... placeholders
      * @param array<int, mixed> $parameters Positional parameters
      *
      * @throws QueryException
      */
-    public function fetchScalarString(SqlQuery|string $sql, array $parameters = []) : string;
+    public function fetchScalarString(Sql|string $sql, array $parameters = []) : string;
 
     /**
      * Get the current transaction nesting level.
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Cursor.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Cursor.php
index fcb2089805..aeea6672f2 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Cursor.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Cursor.php
@@ -34,19 +34,16 @@ public function free() : void;
     public function iterate() : \Generator;
 
     /**
-     * Iterate all remaining rows, mapping each to an object.
-     * Memory efficient - one object at a time.
+     * Iterate all remaining rows, mapping each using the provided mapper.
+     * Memory efficient - one result at a time.
      *
-     * Uses the client's default mapper unless overridden.
+     * @template T
      *
-     * @template T of object
-     *
-     * @param class-string<T> $class Target class for mapping
-     * @param null|RowMapper $mapper Override default mapper for this iteration
+     * @param RowMapper<T> $mapper Mapper to apply to each row
      *
      * @return \Generator<int, T>
      */
-    public function map(string $class, ?RowMapper $mapper = null) : \Generator;
+    public function map(RowMapper $mapper) : \Generator;
 
     /**
      * Fetch the next row. Returns null when exhausted.
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Exception/MappingException.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Exception/MappingException.php
index 836ebb5550..3562848508 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Exception/MappingException.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Exception/MappingException.php
@@ -11,13 +11,6 @@ public static function mappingFailed(string $class, string $reason) : self
         return new self(\sprintf('Failed to map row to "%s": %s', $class, $reason));
     }
 
-    public static function noMapperConfigured() : self
-    {
-        return new self(
-            'No RowMapper configured. Pass a mapper to the method or set a default mapper on the client.'
-        );
-    }
-
     public static function propertyNotFound(string $class, string $property) : self
     {
         return new self(\sprintf('Property "%s" not found on class "%s"', $property, $class));
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Exception/ValueConversionException.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Exception/ValueConversionException.php
index f70c2fe776..d1363f74ba 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Exception/ValueConversionException.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Exception/ValueConversionException.php
@@ -8,7 +8,7 @@ final class ValueConversionException extends ClientException
 {
     public static function ambiguousArrayType() : self
     {
-        return new self('Array parameters require explicit type specification. Use typed($array, PostgreSqlType::INT4_ARRAY) or similar to specify the target array type.');
+        return new self('Array parameters require explicit type specification. Use typed($array, ValueType::INT4_ARRAY) or similar to specify the target array type.');
     }
 
     public static function cannotConvert(mixed $value, string $targetType) : self
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgCatalogProvider.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgCatalogProvider.php
new file mode 100644
index 0000000000..15b8dca074
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgCatalogProvider.php
@@ -0,0 +1,1136 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Client\Infrastructure\PgSql;
+
+use function Flow\PostgreSql\DSL\{agg, and_, any_, asc, case_when, cast, col, concat, eq, func, gt, in_, is_null, is_true, literal, ne, not_, not_like, param, select, sub_select, table, type_mapper, when};
+
+use function Flow\Types\DSL\{type_boolean, type_integer, type_null, type_string, type_structure, type_union};
+use Flow\PostgreSql\Client\Client;
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Parser\{ColumnTypeParser, ExpressionParser};
+use Flow\PostgreSql\QueryBuilder\Condition\ComparisonOperator;
+
+use Flow\PostgreSql\QueryBuilder\Expression\Literal;
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnType, ReferentialAction};
+use Flow\PostgreSql\Schema\{Catalog, CatalogProvider, Column, Domain, Extension, Func, FunctionVolatility, IdentityGeneration, Index, IndexMethod, MaterializedView, PartitionStrategy, Procedure, Schema, Sequence, Table, Trigger, TriggerEvent, TriggerTiming, View};
+use Flow\PostgreSql\Schema\Constraint\{CheckConstraint, ExcludeConstraint, ForeignKey, PrimaryKey, UniqueConstraint};
+
+final readonly class PgCatalogProvider implements CatalogProvider
+{
+    private ColumnTypeParser $columnTypeParser;
+
+    private ExpressionParser $expressionParser;
+
+    /**
+     * @param ?list<string> $schemaNames
+     * @param list<string> $excludeTables
+     */
+    public function __construct(
+        private Client $client,
+        private ?array $schemaNames = null,
+        private array $excludeTables = [],
+    ) {
+        $this->columnTypeParser = new ColumnTypeParser();
+        $this->expressionParser = new ExpressionParser(new Parser());
+    }
+
+    public function get() : Catalog
+    {
+        $schemas = [];
+
+        foreach ($this->resolveSchemaNames() as $schemaName) {
+            $schemas[] = $this->readSchema($schemaName);
+        }
+
+        return new Catalog($schemas);
+    }
+
+    private function mapIndexMethod(string $amname) : IndexMethod
+    {
+        return IndexMethod::tryFrom($amname) ?? IndexMethod::BTREE;
+    }
+
+    private function mapReferentialAction(string $code) : ReferentialAction
+    {
+        return ReferentialAction::tryFrom($code) ?? ReferentialAction::NO_ACTION;
+    }
+
+    /**
+     * Strip implicit type casts from default values that PostgreSQL adds for storage.
+     *
+     * PostgreSQL stores `'pending'` as `'pending'::character varying` — the cast is implicit
+     * and redundant since the column type is already known. This method parses the expression
+     * and removes the outer TypeCast when it wraps a simple constant.
+     */
+    private function normalizeDefault(?string $default) : ?string
+    {
+        if ($default === null) {
+            return null;
+        }
+
+        $node = $this->expressionParser->parse($default);
+        $typeCast = $node->getTypeCast();
+
+        if ($typeCast === null) {
+            return $default;
+        }
+
+        $inner = $typeCast->getArg();
+
+        if ($inner === null || $inner->getAConst() === null) {
+            return $default;
+        }
+
+        $aConst = $inner->getAConst();
+        $sval = $aConst->getSval();
+
+        if ($sval !== null) {
+            return "'" . \str_replace("'", "''", $sval->getSval()) . "'";
+        }
+
+        $ival = $aConst->getIval();
+
+        if ($ival !== null) {
+            /** @phpstan-ignore method.nonObject */
+            return (string) $ival->getIval();
+        }
+
+        $fval = $aConst->getFval();
+
+        if ($fval !== null) {
+            return $fval->getFval();
+        }
+
+        return $default;
+    }
+
+    /**
+     * @return list<string>
+     */
+    private function parseArgumentTypes(string $arguments) : array
+    {
+        if ($arguments === '') {
+            return [];
+        }
+
+        $types = [];
+
+        foreach (\explode(', ', $arguments) as $arg) {
+            $parts = \explode(' ', \trim($arg));
+            $types[] = \end($parts);
+        }
+
+        return $types;
+    }
+
+    /**
+     * @return non-empty-list<string>
+     */
+    private function parseArrayLiteral(string $literal) : array
+    {
+        $trimmed = \trim($literal, '{}');
+
+        if ($trimmed === '') {
+            throw new \RuntimeException(\sprintf('Expected non-empty array literal, got "%s".', $literal));
+        }
+
+        return \array_values(\array_map('trim', \explode(',', $trimmed)));
+    }
+
+    /**
+     * @return list<CheckConstraint>
+     */
+    private function readCheckConstraints(string $tableName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'definition' => type_string(),
+                'no_inherit' => type_boolean(),
+            ])),
+            select(
+                col('conname', 'con')->as('name'),
+                func('pg_catalog.pg_get_constraintdef', [col('oid', 'con')])->as('definition'),
+                col('connoinherit', 'con')->as('no_inherit'),
+            )
+                ->from(table('pg_constraint', 'pg_catalog')->as('con'))
+                ->join(table('pg_class', 'pg_catalog')->as('c'), eq(col('oid', 'c'), col('conrelid', 'con')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->where(and_(
+                    eq(col('relname', 'c'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                    eq(col('contype', 'con'), literal('c')),
+                ))
+                ->orderBy(asc(col('conname', 'con'))),
+            [$tableName, $schemaName],
+        );
+
+        $constraints = [];
+
+        foreach ($rows as $row) {
+            $constraints[] = new CheckConstraint(
+                $this->stripCheckWrapper($row['definition']),
+                $row['name'],
+                $row['no_inherit'],
+            );
+        }
+
+        return $constraints;
+    }
+
+    /**
+     * @return non-empty-list<Column>
+     */
+    private function readColumns(string $tableName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'type_name' => type_string(),
+                'nullable' => type_boolean(),
+                'identity' => type_string(),
+                'generated' => type_string(),
+                'ordinal_position' => type_integer(),
+            ], [
+                'default_value' => type_union(type_string(), type_null()),
+            ])),
+            select(
+                col('attname', 'a')->as('name'),
+                func('pg_catalog.format_type', [col('atttypid', 'a'), col('atttypmod', 'a')])->as('type_name'),
+                not_(col('attnotnull', 'a'))->as('nullable'),
+                func('pg_catalog.pg_get_expr', [col('adbin', 'd'), col('adrelid', 'd')])->as('default_value'),
+                col('attidentity', 'a')->as('identity'),
+                col('attgenerated', 'a')->as('generated'),
+                col('attnum', 'a')->as('ordinal_position'),
+            )
+                ->from(table('pg_attribute', 'pg_catalog')->as('a'))
+                ->leftJoin(
+                    table('pg_attrdef', 'pg_catalog')->as('d'),
+                    and_(
+                        eq(col('adrelid', 'd'), col('attrelid', 'a')),
+                        eq(col('adnum', 'd'), col('attnum', 'a')),
+                    ),
+                )
+                ->where(and_(
+                    eq(
+                        col('attrelid', 'a'),
+                        sub_select(
+                            select(col('oid', 'c'))
+                                ->from(table('pg_class', 'pg_catalog')->as('c'))
+                                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                                ->where(and_(
+                                    eq(col('relname', 'c'), param(1)),
+                                    eq(col('nspname', 'n'), param(2)),
+                                ))
+                        ),
+                    ),
+                    gt(col('attnum', 'a'), literal(0)),
+                    not_(is_true(col('attisdropped', 'a'))),
+                ))
+                ->orderBy(asc(col('attnum', 'a'))),
+            [$tableName, $schemaName],
+        );
+
+        $columns = [];
+
+        foreach ($rows as $row) {
+            $isIdentity = $row['identity'] !== '';
+            $isGenerated = $row['generated'] !== '';
+
+            $defaultValue = $row['default_value'] ?? null;
+
+            $columns[] = new Column(
+                $row['name'],
+                $this->columnTypeParser->parse($row['type_name']),
+                $row['nullable'],
+                $isGenerated ? null : $this->normalizeDefault($defaultValue),
+                $isIdentity,
+                $isIdentity ? IdentityGeneration::from($row['identity']) : null,
+                $isGenerated,
+                $isGenerated ? $this->normalizeDefault($defaultValue) : null,
+                $row['ordinal_position'],
+            );
+        }
+
+        if ($columns === []) {
+            throw new \RuntimeException(\sprintf('Table "%s"."%s" has no columns.', $schemaName, $tableName));
+        }
+
+        return $columns;
+    }
+
+    /**
+     * @return list<CheckConstraint>
+     */
+    private function readDomainCheckConstraints(string $domainName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'definition' => type_string(),
+            ])),
+            select(
+                col('conname', 'con')->as('name'),
+                func('pg_catalog.pg_get_constraintdef', [col('oid', 'con')])->as('definition'),
+            )
+                ->from(table('pg_constraint', 'pg_catalog')->as('con'))
+                ->join(table('pg_type', 'pg_catalog')->as('t'), eq(col('oid', 't'), col('contypid', 'con')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('typnamespace', 't')))
+                ->where(and_(
+                    eq(col('typname', 't'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                    eq(col('contype', 'con'), literal('c')),
+                ))
+                ->orderBy(asc(col('conname', 'con'))),
+            [$domainName, $schemaName],
+        );
+
+        $constraints = [];
+
+        foreach ($rows as $row) {
+            $constraints[] = new CheckConstraint(
+                $this->stripCheckWrapper($row['definition']),
+                $row['name'],
+            );
+        }
+
+        return $constraints;
+    }
+
+    /**
+     * @return list<Domain>
+     */
+    private function readDomains(string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'base_type' => type_string(),
+                'nullable' => type_boolean(),
+            ], [
+                'default_value' => type_union(type_string(), type_null()),
+            ])),
+            select(
+                col('typname', 't')->as('name'),
+                func('pg_catalog.format_type', [col('typbasetype', 't'), col('typtypmod', 't')])->as('base_type'),
+                not_(col('typnotnull', 't'))->as('nullable'),
+                func('pg_catalog.pg_get_expr', [col('typdefaultbin', 't'), literal(0)])->as('default_value'),
+            )
+                ->from(table('pg_type', 'pg_catalog')->as('t'))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('typnamespace', 't')))
+                ->where(and_(
+                    eq(col('nspname', 'n'), param(1)),
+                    eq(col('typtype', 't'), literal('d')),
+                ))
+                ->orderBy(asc(col('typname', 't'))),
+            [$schemaName],
+        );
+
+        $domains = [];
+
+        foreach ($rows as $row) {
+            $domains[] = new Domain(
+                $row['name'],
+                $this->columnTypeParser->parse($row['base_type']),
+                $row['nullable'],
+                $row['default_value'] ?? null,
+                $this->readDomainCheckConstraints($row['name'], $schemaName),
+            );
+        }
+
+        return $domains;
+    }
+
+    /**
+     * @return list<ExcludeConstraint>
+     */
+    private function readExcludeConstraints(string $tableName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'definition' => type_string(),
+            ])),
+            select(
+                col('conname', 'con')->as('name'),
+                func('pg_catalog.pg_get_constraintdef', [col('oid', 'con')])->as('definition'),
+            )
+                ->from(table('pg_constraint', 'pg_catalog')->as('con'))
+                ->join(table('pg_class', 'pg_catalog')->as('c'), eq(col('oid', 'c'), col('conrelid', 'con')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->where(and_(
+                    eq(col('relname', 'c'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                    eq(col('contype', 'con'), literal('x')),
+                ))
+                ->orderBy(asc(col('conname', 'con'))),
+            [$tableName, $schemaName],
+        );
+
+        $constraints = [];
+
+        foreach ($rows as $row) {
+            $constraints[] = new ExcludeConstraint($row['definition'], $row['name']);
+        }
+
+        return $constraints;
+    }
+
+    /**
+     * @return list<Extension>
+     */
+    private function readExtensions(string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+            ], [
+                'version' => type_union(type_string(), type_null()),
+            ])),
+            select(
+                col('extname', 'e')->as('name'),
+                col('extversion', 'e')->as('version'),
+            )
+                ->from(table('pg_extension', 'pg_catalog')->as('e'))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('extnamespace', 'e')))
+                ->where(eq(col('nspname', 'n'), param(1)))
+                ->orderBy(asc(col('extname', 'e'))),
+            [$schemaName],
+        );
+
+        $extensions = [];
+
+        foreach ($rows as $row) {
+            $extensions[] = new Extension($row['name'], $row['version'] ?? null);
+        }
+
+        return $extensions;
+    }
+
+    /**
+     * @return list<ForeignKey>
+     */
+    private function readForeignKeys(string $tableName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'columns' => type_string(),
+                'reference_schema' => type_string(),
+                'reference_table' => type_string(),
+                'reference_columns' => type_string(),
+                'on_update' => type_string(),
+                'on_delete' => type_string(),
+                'deferrable' => type_boolean(),
+                'initially_deferred' => type_boolean(),
+            ])),
+            select(
+                col('conname', 'con')->as('name'),
+                agg('array_agg', [col('attname', 'a')], distinct: true)->withOrderBy(asc(col('attname', 'a')))->as('columns'),
+                col('nspname', 'nf')->as('reference_schema'),
+                col('relname', 'cf')->as('reference_table'),
+                agg('array_agg', [col('attname', 'af')], distinct: true)->withOrderBy(asc(col('attname', 'af')))->as('reference_columns'),
+                col('confupdtype', 'con')->as('on_update'),
+                col('confdeltype', 'con')->as('on_delete'),
+                col('condeferrable', 'con')->as('deferrable'),
+                col('condeferred', 'con')->as('initially_deferred'),
+            )
+                ->from(table('pg_constraint', 'pg_catalog')->as('con'))
+                ->join(table('pg_class', 'pg_catalog')->as('c'), eq(col('oid', 'c'), col('conrelid', 'con')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->join(table('pg_attribute', 'pg_catalog')->as('a'), and_(
+                    eq(col('attrelid', 'a'), col('conrelid', 'con')),
+                    any_(col('attnum', 'a'), ComparisonOperator::EQ, col('conkey', 'con')),
+                ))
+                ->join(table('pg_class', 'pg_catalog')->as('cf'), eq(col('oid', 'cf'), col('confrelid', 'con')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('nf'), eq(col('oid', 'nf'), col('relnamespace', 'cf')))
+                ->join(table('pg_attribute', 'pg_catalog')->as('af'), and_(
+                    eq(col('attrelid', 'af'), col('confrelid', 'con')),
+                    any_(col('attnum', 'af'), ComparisonOperator::EQ, col('confkey', 'con')),
+                ))
+                ->where(and_(
+                    eq(col('relname', 'c'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                    eq(col('contype', 'con'), literal('f')),
+                ))
+                ->groupBy(
+                    col('conname', 'con'),
+                    col('nspname', 'nf'),
+                    col('relname', 'cf'),
+                    col('confupdtype', 'con'),
+                    col('confdeltype', 'con'),
+                    col('condeferrable', 'con'),
+                    col('condeferred', 'con'),
+                ),
+            [$tableName, $schemaName],
+        );
+
+        $foreignKeys = [];
+
+        foreach ($rows as $row) {
+            $foreignKeys[] = new ForeignKey(
+                $row['name'],
+                $this->parseArrayLiteral($row['columns']),
+                $row['reference_schema'],
+                $row['reference_table'],
+                $this->parseArrayLiteral($row['reference_columns']),
+                $this->mapReferentialAction($row['on_update']),
+                $this->mapReferentialAction($row['on_delete']),
+                $row['deferrable'],
+                $row['initially_deferred'],
+            );
+        }
+
+        return $foreignKeys;
+    }
+
+    /**
+     * @return list<Func>
+     */
+    private function readFunctions(string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'return_type' => type_string(),
+                'arguments' => type_string(),
+                'language' => type_string(),
+                'definition' => type_string(),
+                'is_strict' => type_boolean(),
+            ], [
+                'volatility' => type_union(type_string(), type_null()),
+            ])),
+            select(
+                col('proname', 'p')->as('name'),
+                func('pg_catalog.pg_get_function_result', [col('oid', 'p')])->as('return_type'),
+                func('pg_catalog.pg_get_function_arguments', [col('oid', 'p')])->as('arguments'),
+                col('lanname', 'l')->as('language'),
+                col('prosrc', 'p')->as('definition'),
+                col('proisstrict', 'p')->as('is_strict'),
+                case_when(
+                    [when(literal('i'), literal('immutable')), when(literal('s'), literal('stable')), when(literal('v'), literal('volatile'))],
+                    operand: col('provolatile', 'p'),
+                )->as('volatility'),
+            )
+                ->from(table('pg_proc', 'pg_catalog')->as('p'))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('pronamespace', 'p')))
+                ->join(table('pg_language', 'pg_catalog')->as('l'), eq(col('oid', 'l'), col('prolang', 'p')))
+                ->where(and_(
+                    eq(col('nspname', 'n'), param(1)),
+                    eq(col('prokind', 'p'), literal('f')),
+                ))
+                ->orderBy(asc(col('proname', 'p'))),
+            [$schemaName],
+        );
+
+        $functions = [];
+
+        foreach ($rows as $row) {
+            $functions[] = new Func(
+                $row['name'],
+                $row['return_type'],
+                $this->parseArgumentTypes($row['arguments']),
+                $row['language'],
+                $row['definition'],
+                $row['is_strict'],
+                array_key_exists('volatility', $row) && $row['volatility'] !== null ? FunctionVolatility::from($row['volatility']) : null,
+            );
+        }
+
+        return $functions;
+    }
+
+    /**
+     * @return list<Index>
+     */
+    private function readIndexes(string $tableName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'is_unique' => type_boolean(),
+                'is_primary' => type_boolean(),
+                'method' => type_string(),
+                'columns' => type_string(),
+            ], [
+                'predicate' => type_union(type_string(), type_null()),
+            ])),
+            select(
+                col('relname', 'i')->as('name'),
+                col('indisunique', 'ix')->as('is_unique'),
+                col('indisprimary', 'ix')->as('is_primary'),
+                col('amname', 'am')->as('method'),
+                agg('array_agg', [col('attname', 'a')])->withOrderBy(asc(func('array_position', [cast(col('indkey', 'ix'), ColumnType::array(ColumnType::integer())), col('attnum', 'a')])))->as('columns'),
+                func('pg_catalog.pg_get_expr', [col('indpred', 'ix'), col('indrelid', 'ix')])->as('predicate'),
+            )
+                ->from(table('pg_index', 'pg_catalog')->as('ix'))
+                ->join(table('pg_class', 'pg_catalog')->as('i'), eq(col('oid', 'i'), col('indexrelid', 'ix')))
+                ->join(table('pg_class', 'pg_catalog')->as('t'), eq(col('oid', 't'), col('indrelid', 'ix')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 't')))
+                ->join(table('pg_am', 'pg_catalog')->as('am'), eq(col('oid', 'am'), col('relam', 'i')))
+                ->join(table('pg_attribute', 'pg_catalog')->as('a'), and_(
+                    eq(col('attrelid', 'a'), col('oid', 't')),
+                    any_(col('attnum', 'a'), ComparisonOperator::EQ, col('indkey', 'ix')),
+                ))
+                ->leftJoin(
+                    table('pg_constraint', 'pg_catalog')->as('con'),
+                    eq(col('conindid', 'con'), col('indexrelid', 'ix')),
+                )
+                ->where(and_(
+                    eq(col('relname', 't'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                    gt(col('attnum', 'a'), literal(0)),
+                    is_null(col('conindid', 'con')),
+                ))
+                ->groupBy(
+                    col('relname', 'i'),
+                    col('indisunique', 'ix'),
+                    col('indisprimary', 'ix'),
+                    col('amname', 'am'),
+                    col('indpred', 'ix'),
+                    col('indrelid', 'ix'),
+                )
+                ->orderBy(asc(col('relname', 'i'))),
+            [$tableName, $schemaName],
+        );
+
+        $indexes = [];
+
+        foreach ($rows as $row) {
+            $indexes[] = new Index(
+                $row['name'],
+                $this->parseArrayLiteral($row['columns']),
+                $row['is_unique'],
+                $this->mapIndexMethod($row['method']),
+                $row['is_primary'],
+                $row['predicate'] ?? null,
+            );
+        }
+
+        return $indexes;
+    }
+
+    /**
+     * @return list<string>
+     */
+    private function readInherits(string $tableName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure(['parent' => type_string()])),
+            select(
+                concat(col('nspname', 'pn'), literal('.'), col('relname', 'pc'))->as('parent'),
+            )
+                ->from(table('pg_inherits', 'pg_catalog')->as('i'))
+                ->join(table('pg_class', 'pg_catalog')->as('c'), eq(col('oid', 'c'), col('inhrelid', 'i')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->join(table('pg_class', 'pg_catalog')->as('pc'), eq(col('oid', 'pc'), col('inhparent', 'i')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('pn'), eq(col('oid', 'pn'), col('relnamespace', 'pc')))
+                ->where(and_(
+                    eq(col('relname', 'c'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                ))
+                ->orderBy(asc(col('inhseqno', 'i'))),
+            [$tableName, $schemaName],
+        );
+
+        return \array_map(static fn (array $row) : string => $row['parent'], $rows);
+    }
+
+    /**
+     * @return list<MaterializedView>
+     */
+    private function readMaterializedViews(string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'definition' => type_string(),
+            ])),
+            select(
+                col('matviewname')->as('name'),
+                col('definition'),
+            )
+                ->from(table('pg_matviews', 'pg_catalog'))
+                ->where(eq(col('schemaname'), param(1)))
+                ->orderBy(asc(col('matviewname'))),
+            [$schemaName],
+        );
+
+        $views = [];
+
+        foreach ($rows as $row) {
+            $views[] = new MaterializedView($row['name'], $row['definition']);
+        }
+
+        return $views;
+    }
+
+    /**
+     * @return array{0: PartitionStrategy, 1: list<string>}
+     */
+    private function readPartitionInfo(string $tableName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure(['partdef' => type_string()])),
+            select(
+                func('pg_catalog.pg_get_partkeydef', [col('oid', 'c')])->as('partdef'),
+            )
+                ->from(table('pg_class', 'pg_catalog')->as('c'))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->where(and_(
+                    eq(col('relname', 'c'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                )),
+            [$tableName, $schemaName],
+        );
+
+        if ($rows === [] || $rows[0]['partdef'] === '') {
+            throw new \RuntimeException(\sprintf('Could not read partition info for table "%s"."%s".', $schemaName, $tableName));
+        }
+
+        $partdef = $rows[0]['partdef'];
+
+        if (!\preg_match('/^(HASH|LIST|RANGE)\s*\((.+)\)$/i', $partdef, $matches)) {
+            throw new \RuntimeException(\sprintf('Could not parse partition definition: "%s".', $partdef));
+        }
+
+        return [
+            PartitionStrategy::from(\strtolower($matches[1])),
+            \array_map('trim', \explode(',', $matches[2])),
+        ];
+    }
+
+    private function readPrimaryKey(string $tableName, string $schemaName) : ?PrimaryKey
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'columns' => type_string(),
+            ])),
+            select(
+                col('conname', 'con')->as('name'),
+                agg('array_agg', [col('attname', 'a')])->withOrderBy(asc(func('array_position', [col('conkey', 'con'), col('attnum', 'a')])))->as('columns'),
+            )
+                ->from(table('pg_constraint', 'pg_catalog')->as('con'))
+                ->join(table('pg_class', 'pg_catalog')->as('c'), eq(col('oid', 'c'), col('conrelid', 'con')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->join(table('pg_attribute', 'pg_catalog')->as('a'), and_(
+                    eq(col('attrelid', 'a'), col('conrelid', 'con')),
+                    any_(col('attnum', 'a'), ComparisonOperator::EQ, col('conkey', 'con')),
+                ))
+                ->where(and_(
+                    eq(col('relname', 'c'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                    eq(col('contype', 'con'), literal('p')),
+                ))
+                ->groupBy(col('conname', 'con')),
+            [$tableName, $schemaName],
+        );
+
+        if ($rows === []) {
+            return null;
+        }
+
+        return new PrimaryKey(
+            $this->parseArrayLiteral($rows[0]['columns']),
+            $rows[0]['name'],
+        );
+    }
+
+    /**
+     * @return list<Procedure>
+     */
+    private function readProcedures(string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'arguments' => type_string(),
+                'language' => type_string(),
+            ], [
+                'definition' => type_union(type_string(), type_null()),
+            ])),
+            select(
+                col('proname', 'p')->as('name'),
+                func('pg_catalog.pg_get_function_arguments', [col('oid', 'p')])->as('arguments'),
+                col('lanname', 'l')->as('language'),
+                col('prosrc', 'p')->as('definition'),
+            )
+                ->from(table('pg_proc', 'pg_catalog')->as('p'))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('pronamespace', 'p')))
+                ->join(table('pg_language', 'pg_catalog')->as('l'), eq(col('oid', 'l'), col('prolang', 'p')))
+                ->where(and_(
+                    eq(col('nspname', 'n'), param(1)),
+                    eq(col('prokind', 'p'), literal('p')),
+                ))
+                ->orderBy(asc(col('proname', 'p'))),
+            [$schemaName],
+        );
+
+        $procedures = [];
+
+        foreach ($rows as $row) {
+            $procedures[] = new Procedure(
+                $row['name'],
+                $this->parseArgumentTypes($row['arguments']),
+                $row['language'],
+                $row['definition'] ?? null,
+            );
+        }
+
+        return $procedures;
+    }
+
+    private function readSchema(string $schemaName) : Schema
+    {
+        $tables = [];
+
+        foreach ($this->readTableNames($schemaName) as $tableInfo) {
+            $tables[] = $this->readTable(
+                $tableInfo['relname'],
+                $schemaName,
+                $tableInfo['relpersistence'] === 'u',
+                $tableInfo['relkind'],
+                $tableInfo['tablespace'] ?? null,
+            );
+        }
+
+        return new Schema(
+            $schemaName,
+            $tables,
+            $this->readSequences($schemaName),
+            $this->readViews($schemaName),
+            $this->readMaterializedViews($schemaName),
+            $this->readFunctions($schemaName),
+            $this->readProcedures($schemaName),
+            $this->readDomains($schemaName),
+            $this->readExtensions($schemaName),
+        );
+    }
+
+    /**
+     * @return list<Sequence>
+     */
+    private function readSequences(string $schemaName) : array
+    {
+        $intOrString = type_union(type_integer(), type_string());
+
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'data_type' => type_string(),
+                'start_value' => $intOrString,
+                'min_value' => $intOrString,
+                'increment_by' => $intOrString,
+                'cycle' => type_boolean(),
+                'cache_value' => $intOrString,
+            ], [
+                'max_value' => type_union(type_integer(), type_string(), type_null()),
+                'owned_by_table' => type_union(type_string(), type_null()),
+                'owned_by_column' => type_union(type_string(), type_null()),
+            ])),
+            select(
+                col('relname', 'c')->as('name'),
+                func('pg_catalog.format_type', [col('seqtypid', 's'), literal(null)])->as('data_type'),
+                col('seqstart', 's')->as('start_value'),
+                col('seqmin', 's')->as('min_value'),
+                col('seqmax', 's')->as('max_value'),
+                col('seqincrement', 's')->as('increment_by'),
+                col('seqcycle', 's')->as('cycle'),
+                col('seqcache', 's')->as('cache_value'),
+                col('relname', 'dep_c')->as('owned_by_table'),
+                col('attname', 'dep_a')->as('owned_by_column'),
+            )
+                ->from(table('pg_sequence', 'pg_catalog')->as('s'))
+                ->join(table('pg_class', 'pg_catalog')->as('c'), eq(col('oid', 'c'), col('seqrelid', 's')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->leftJoin(table('pg_depend', 'pg_catalog')->as('d'), and_(
+                    eq(col('objid', 'd'), col('seqrelid', 's')),
+                    eq(col('deptype', 'd'), literal('a')),
+                ))
+                ->leftJoin(table('pg_class', 'pg_catalog')->as('dep_c'), eq(col('oid', 'dep_c'), col('refobjid', 'd')))
+                ->leftJoin(table('pg_attribute', 'pg_catalog')->as('dep_a'), and_(
+                    eq(col('attrelid', 'dep_a'), col('refobjid', 'd')),
+                    eq(col('attnum', 'dep_a'), col('refobjsubid', 'd')),
+                ))
+                ->where(eq(col('nspname', 'n'), param(1)))
+                ->orderBy(asc(col('relname', 'c'))),
+            [$schemaName],
+        );
+
+        $sequences = [];
+
+        foreach ($rows as $row) {
+            if (($row['owned_by_table'] ?? null) !== null) {
+                continue;
+            }
+
+            $sequences[] = new Sequence(
+                $row['name'],
+                $row['data_type'],
+                $row['start_value'],
+                $row['min_value'],
+                $row['max_value'] ?? null,
+                $row['increment_by'],
+                $row['cycle'],
+                $row['cache_value'],
+                null,
+                null,
+            );
+        }
+
+        return $sequences;
+    }
+
+    private function readTable(string $tableName, string $schemaName, bool $unlogged = false, string $relkind = 'r', ?string $tablespace = null) : Table
+    {
+        $partitionStrategy = null;
+        $partitionColumns = [];
+
+        if ($relkind === 'p') {
+            [$partitionStrategy, $partitionColumns] = $this->readPartitionInfo($tableName, $schemaName);
+        }
+
+        $inherits = $relkind === 'r' ? $this->readInherits($tableName, $schemaName) : [];
+
+        return new Table(
+            $schemaName,
+            $tableName,
+            $this->readColumns($tableName, $schemaName),
+            $this->readPrimaryKey($tableName, $schemaName),
+            $this->readIndexes($tableName, $schemaName),
+            $this->readForeignKeys($tableName, $schemaName),
+            $this->readUniqueConstraints($tableName, $schemaName),
+            $this->readCheckConstraints($tableName, $schemaName),
+            $this->readExcludeConstraints($tableName, $schemaName),
+            $this->readTriggers($tableName, $schemaName),
+            $unlogged,
+            $partitionStrategy,
+            $partitionColumns,
+            $inherits,
+            $tablespace,
+        );
+    }
+
+    /**
+     * @return list<array{relname: string, relpersistence: string, relkind: string, tablespace?: ?string}>
+     */
+    private function readTableNames(string $schemaName) : array
+    {
+        $conditions = and_(
+            eq(col('nspname', 'n'), param(1)),
+            in_(col('relkind', 'c'), [literal('r'), literal('p')]),
+        );
+
+        if ($this->excludeTables !== []) {
+            $conditions = and_(
+                $conditions,
+                not_(in_(col('relname', 'c'), \array_map(static fn (string $t) : Literal => literal($t), $this->excludeTables))),
+            );
+        }
+
+        return \array_values($this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'relname' => type_string(),
+                'relpersistence' => type_string(),
+                'relkind' => type_string(),
+            ], [
+                'tablespace' => type_union(type_string(), type_null()),
+            ])),
+            select(
+                col('relname', 'c'),
+                col('relpersistence', 'c'),
+                col('relkind', 'c'),
+                case_when(
+                    [when(eq(col('reltablespace', 'c'), literal(0)), Literal::null())],
+                    elseResult: col('spcname', 'ts'),
+                )->as('tablespace'),
+            )
+                ->from(table('pg_class', 'pg_catalog')->as('c'))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->leftJoin(table('pg_tablespace', 'pg_catalog')->as('ts'), eq(col('oid', 'ts'), col('reltablespace', 'c')))
+                ->where($conditions)
+                ->orderBy(asc(col('relname', 'c'))),
+            [$schemaName],
+        ));
+    }
+
+    /**
+     * @return list<Trigger>
+     */
+    private function readTriggers(string $tableName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'function_name' => type_string(),
+                'type' => type_integer(),
+            ])),
+            select(
+                col('tgname', 't')->as('name'),
+                col('proname', 'p')->as('function_name'),
+                col('tgtype', 't')->as('type'),
+            )
+                ->from(table('pg_trigger', 'pg_catalog')->as('t'))
+                ->join(table('pg_class', 'pg_catalog')->as('c'), eq(col('oid', 'c'), col('tgrelid', 't')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->join(table('pg_proc', 'pg_catalog')->as('p'), eq(col('oid', 'p'), col('tgfoid', 't')))
+                ->where(and_(
+                    eq(col('relname', 'c'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                    not_(is_true(col('tgisinternal', 't'))),
+                ))
+                ->orderBy(asc(col('tgname', 't'))),
+            [$tableName, $schemaName],
+        );
+
+        $triggers = [];
+
+        foreach ($rows as $row) {
+            $tgtype = $row['type'];
+
+            if ($tgtype & 64) {
+                $timing = TriggerTiming::INSTEAD_OF;
+            } elseif ($tgtype & 2) {
+                $timing = TriggerTiming::BEFORE;
+            } else {
+                $timing = TriggerTiming::AFTER;
+            }
+
+            $events = [];
+
+            if ($tgtype & 4) {
+                $events[] = TriggerEvent::INSERT;
+            }
+
+            if ($tgtype & 8) {
+                $events[] = TriggerEvent::DELETE;
+            }
+
+            if ($tgtype & 16) {
+                $events[] = TriggerEvent::UPDATE;
+            }
+
+            if ($tgtype & 32) {
+                $events[] = TriggerEvent::TRUNCATE;
+            }
+
+            if ($events === []) {
+                continue;
+            }
+
+            $triggers[] = new Trigger(
+                $row['name'],
+                $tableName,
+                $timing,
+                $events,
+                $row['function_name'],
+                ($tgtype & 1) !== 0,
+            );
+        }
+
+        return $triggers;
+    }
+
+    /**
+     * @return list<UniqueConstraint>
+     */
+    private function readUniqueConstraints(string $tableName, string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'columns' => type_string(),
+            ])),
+            select(
+                col('conname', 'con')->as('name'),
+                agg('array_agg', [col('attname', 'a')])->withOrderBy(asc(func('array_position', [col('conkey', 'con'), col('attnum', 'a')])))->as('columns'),
+            )
+                ->from(table('pg_constraint', 'pg_catalog')->as('con'))
+                ->join(table('pg_class', 'pg_catalog')->as('c'), eq(col('oid', 'c'), col('conrelid', 'con')))
+                ->join(table('pg_namespace', 'pg_catalog')->as('n'), eq(col('oid', 'n'), col('relnamespace', 'c')))
+                ->join(table('pg_attribute', 'pg_catalog')->as('a'), and_(
+                    eq(col('attrelid', 'a'), col('conrelid', 'con')),
+                    any_(col('attnum', 'a'), ComparisonOperator::EQ, col('conkey', 'con')),
+                ))
+                ->where(and_(
+                    eq(col('relname', 'c'), param(1)),
+                    eq(col('nspname', 'n'), param(2)),
+                    eq(col('contype', 'con'), literal('u')),
+                ))
+                ->groupBy(col('conname', 'con')),
+            [$tableName, $schemaName],
+        );
+
+        $constraints = [];
+
+        foreach ($rows as $row) {
+            $constraints[] = new UniqueConstraint(
+                $this->parseArrayLiteral($row['columns']),
+                $row['name'],
+            );
+        }
+
+        return $constraints;
+    }
+
+    /**
+     * @return list<View>
+     */
+    private function readViews(string $schemaName) : array
+    {
+        $rows = $this->client->fetchAllInto(
+            type_mapper(type_structure([
+                'name' => type_string(),
+                'definition' => type_string(),
+            ])),
+            select(
+                col('viewname')->as('name'),
+                col('definition'),
+            )
+                ->from(table('pg_views', 'pg_catalog'))
+                ->where(eq(col('schemaname'), param(1)))
+                ->orderBy(asc(col('viewname'))),
+            [$schemaName],
+        );
+
+        $views = [];
+
+        foreach ($rows as $row) {
+            $views[] = new View($row['name'], $row['definition']);
+        }
+
+        return $views;
+    }
+
+    /**
+     * @return list<string>
+     */
+    private function resolveSchemaNames() : array
+    {
+        return $this->schemaNames ?? \array_values(\array_map(
+            static fn (array $row) : string => $row['nspname'],
+            $this->client->fetchAllInto(
+                type_mapper(type_structure(['nspname' => type_string()])),
+                select(col('nspname'))
+                    ->from(table('pg_namespace', 'pg_catalog'))
+                    ->where(and_(
+                        not_like(col('nspname'), literal('pg_%')),
+                        ne(col('nspname'), literal('information_schema')),
+                    ))
+                    ->orderBy(asc(col('nspname'))),
+            ),
+        ));
+    }
+
+    private function stripCheckWrapper(string $definition) : string
+    {
+        if (\str_starts_with($definition, 'CHECK (') && \str_ends_with($definition, ')')) {
+            return \substr($definition, 7, -1);
+        }
+
+        return $definition;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgSqlClient.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgSqlClient.php
index 7958f79229..bd69aa7cc3 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgSqlClient.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgSqlClient.php
@@ -7,12 +7,12 @@
 use function Flow\PostgreSql\DSL\{begin, commit, release_savepoint, rollback, savepoint};
 use Flow\PostgreSql\AST\Transformers\{ExplainConfig, ExplainModifier};
 use Flow\PostgreSql\Client\{Client, ConnectionParameters, Cursor, RowMapper, TransactionContext, TypedValue};
-use Flow\PostgreSql\Client\Exception\{ConnectionException, MappingException, PostgreSqlError, QueryException, ResultException, TransactionException, ValueConversionException};
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ResultCaster, ValueConverters};
+use Flow\PostgreSql\Client\Exception\{ConnectionException, PostgreSqlError, QueryException, ResultException, TransactionException, ValueConversionException};
+use Flow\PostgreSql\Client\Types\{ResultCaster, ValueConverters, ValueType};
 use Flow\PostgreSql\Explain\ExplainParser;
 use Flow\PostgreSql\Explain\Plan\Plan;
 use Flow\PostgreSql\Parser;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 use PgSql\{Connection, Result};
 
 final class PgSqlClient implements Client
@@ -27,7 +27,6 @@ private function __construct(
         private ?Connection $connection,
         private readonly ConnectionParameters $connectionParameters,
         private readonly ValueConverters $valueConverters,
-        private readonly ?RowMapper $defaultMapper = null,
     ) {
         $this->resultCaster = new ResultCaster();
         $this->transactionContext = new TransactionContext();
@@ -39,14 +38,13 @@ private function __construct(
     public static function connect(
         ConnectionParameters $params,
         ?ValueConverters $valueConverters = null,
-        ?RowMapper $mapper = null,
     ) : self {
         if (!\extension_loaded('pgsql')) {
             throw ConnectionException::extensionNotLoaded('pgsql');
         }
 
         \error_clear_last();
-        $connection = @\pg_connect($params->toString());
+        $connection = @\pg_connect($params->toString(), \PGSQL_CONNECT_FORCE_NEW);
 
         if ($connection === false) {
             $error = \error_get_last();
@@ -58,7 +56,6 @@ public static function connect(
             $connection,
             $params,
             $valueConverters ?? ValueConverters::create(),
-            $mapper,
         );
     }
 
@@ -107,14 +104,14 @@ public function converters() : ValueConverters
         return $this->valueConverters;
     }
 
-    public function cursor(SqlQuery|string $sql, array $parameters = []) : Cursor
+    public function cursor(Sql|string $sql, array $parameters = []) : Cursor
     {
         $result = $this->query($sql, $parameters);
 
-        return new PgSqlCursor($result, $this->defaultMapper);
+        return new PgSqlCursor($result);
     }
 
-    public function execute(SqlQuery|string $sql, array $parameters = []) : int
+    public function execute(Sql|string $sql, array $parameters = []) : int
     {
         $result = $this->query($sql, $parameters);
         $affected = \pg_affected_rows($result);
@@ -123,10 +120,10 @@ public function execute(SqlQuery|string $sql, array $parameters = []) : int
         return $affected;
     }
 
-    public function explain(SqlQuery|string $sql, array $parameters = [], ?ExplainConfig $config = null) : Plan
+    public function explain(Sql|string $sql, array $parameters = [], ?ExplainConfig $config = null) : Plan
     {
         $config ??= ExplainConfig::forAnalysis();
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         $parsed = (new Parser())->parse($query);
         $parsed->traverse(new ExplainModifier($config));
@@ -137,7 +134,7 @@ public function explain(SqlQuery|string $sql, array $parameters = [], ?ExplainCo
         return (new ExplainParser())->parse($jsonOutput);
     }
 
-    public function fetch(SqlQuery|string $sql, array $parameters = []) : ?array
+    public function fetch(Sql|string $sql, array $parameters = []) : ?array
     {
         $result = $this->query($sql, $parameters);
         $row = \pg_fetch_assoc($result);
@@ -154,7 +151,7 @@ public function fetch(SqlQuery|string $sql, array $parameters = []) : ?array
         return $converted;
     }
 
-    public function fetchAll(SqlQuery|string $sql, array $parameters = []) : array
+    public function fetchAll(Sql|string $sql, array $parameters = []) : array
     {
         $result = $this->query($sql, $parameters);
         $rows = \pg_fetch_all($result) ?: [];
@@ -172,41 +169,31 @@ public function fetchAll(SqlQuery|string $sql, array $parameters = []) : array
     }
 
     public function fetchAllInto(
-        string $class,
-        SqlQuery|string $sql,
+        RowMapper $mapper,
+        Sql|string $sql,
         array $parameters = [],
-        ?RowMapper $mapper = null,
     ) : array {
-        $rows = $this->fetchAll($sql, $parameters);
-
-        if ($rows === []) {
-            return [];
-        }
-
-        $mapper = $this->resolveMapper($mapper);
-
-        return \array_map(
-            static fn (array $row) => $mapper->map($class, $row),
-            $rows,
-        );
+        return \array_values(\array_map(
+            static fn (array $row) => $mapper->map($row),
+            $this->fetchAll($sql, $parameters),
+        ));
     }
 
     public function fetchInto(
-        string $class,
-        SqlQuery|string $sql,
+        RowMapper $mapper,
+        Sql|string $sql,
         array $parameters = [],
-        ?RowMapper $mapper = null,
-    ) : ?object {
+    ) : mixed {
         $row = $this->fetch($sql, $parameters);
 
         if ($row === null) {
             return null;
         }
 
-        return $this->resolveMapper($mapper)->map($class, $row);
+        return $mapper->map($row);
     }
 
-    public function fetchOne(SqlQuery|string $sql, array $parameters = []) : array
+    public function fetchOne(Sql|string $sql, array $parameters = []) : array
     {
         $result = $this->query($sql, $parameters);
         $count = \pg_num_rows($result);
@@ -238,15 +225,14 @@ public function fetchOne(SqlQuery|string $sql, array $parameters = []) : array
     }
 
     public function fetchOneInto(
-        string $class,
-        SqlQuery|string $sql,
+        RowMapper $mapper,
+        Sql|string $sql,
         array $parameters = [],
-        ?RowMapper $mapper = null,
-    ) : object {
-        return $this->resolveMapper($mapper)->map($class, $this->fetchOne($sql, $parameters));
+    ) : mixed {
+        return $mapper->map($this->fetchOne($sql, $parameters));
     }
 
-    public function fetchScalar(SqlQuery|string $sql, array $parameters = []) : mixed
+    public function fetchScalar(Sql|string $sql, array $parameters = []) : mixed
     {
         $result = $this->query($sql, $parameters);
 
@@ -273,7 +259,7 @@ public function fetchScalar(SqlQuery|string $sql, array $parameters = []) : mixe
         return $value;
     }
 
-    public function fetchScalarBool(SqlQuery|string $sql, array $parameters = []) : bool
+    public function fetchScalarBool(Sql|string $sql, array $parameters = []) : bool
     {
         $value = $this->fetchScalar($sql, $parameters);
 
@@ -284,7 +270,7 @@ public function fetchScalarBool(SqlQuery|string $sql, array $parameters = []) :
         return $value;
     }
 
-    public function fetchScalarFloat(SqlQuery|string $sql, array $parameters = []) : float
+    public function fetchScalarFloat(Sql|string $sql, array $parameters = []) : float
     {
         $value = $this->fetchScalar($sql, $parameters);
 
@@ -295,7 +281,7 @@ public function fetchScalarFloat(SqlQuery|string $sql, array $parameters = []) :
         return $value;
     }
 
-    public function fetchScalarInt(SqlQuery|string $sql, array $parameters = []) : int
+    public function fetchScalarInt(Sql|string $sql, array $parameters = []) : int
     {
         $value = $this->fetchScalar($sql, $parameters);
 
@@ -306,7 +292,7 @@ public function fetchScalarInt(SqlQuery|string $sql, array $parameters = []) : i
         return $value;
     }
 
-    public function fetchScalarString(SqlQuery|string $sql, array $parameters = []) : string
+    public function fetchScalarString(Sql|string $sql, array $parameters = []) : string
     {
         $value = $this->fetchScalar($sql, $parameters);
 
@@ -427,14 +413,14 @@ private function convertParameters(array $parameters) : array
             if ($value === null) {
                 $converted[] = null;
             } elseif ($value instanceof TypedValue) {
-                $converter = $this->valueConverters->forPostgreSqlType($value->targetType);
+                $converter = $this->valueConverters->forValueType($value->targetType);
                 $converted[] = $converter->toDatabase($value->value);
             } else {
                 if (\is_array($value)) {
                     throw ValueConversionException::ambiguousArrayType();
                 }
 
-                $converted[] = $this->valueConverters->forPostgreSqlType(PostgreSqlType::TEXT)->toDatabase($value);
+                $converted[] = $this->valueConverters->forValueType(ValueType::TEXT)->toDatabase($value);
             }
         }
 
@@ -466,7 +452,7 @@ private function convertRow(Result $result, array $row) : array
         return $converted;
     }
 
-    private function executeTransactionCommand(SqlQuery $query, callable $exceptionFactory) : void
+    private function executeTransactionCommand(Sql $query, callable $exceptionFactory) : void
     {
         /** @var Connection $connection */
         $connection = $this->connection;
@@ -518,14 +504,14 @@ private function extractError(Connection $connection, ?Result $result) : Postgre
     /**
      * @param array<int, mixed> $parameters
      */
-    private function query(SqlQuery|string $sql, array $parameters) : Result
+    private function query(Sql|string $sql, array $parameters) : Result
     {
         $this->assertConnected();
 
         /** @var Connection $connection */
         $connection = $this->connection;
 
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
         $convertedParams = $this->convertParameters($parameters);
 
         $success = @\pg_send_query_params($connection, $query, $convertedParams);
@@ -557,15 +543,4 @@ private function query(SqlQuery|string $sql, array $parameters) : Result
 
         return $result;
     }
-
-    private function resolveMapper(?RowMapper $mapper) : RowMapper
-    {
-        $resolved = $mapper ?? $this->defaultMapper;
-
-        if ($resolved === null) {
-            throw MappingException::noMapperConfigured();
-        }
-
-        return $resolved;
-    }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgSqlCursor.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgSqlCursor.php
index 1818c5affd..aa25d0a011 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgSqlCursor.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Infrastructure/PgSql/PgSqlCursor.php
@@ -5,7 +5,6 @@
 namespace Flow\PostgreSql\Client\Infrastructure\PgSql;
 
 use Flow\PostgreSql\Client\{Cursor, RowMapper};
-use Flow\PostgreSql\Client\Exception\MappingException;
 use Flow\PostgreSql\Client\Types\ResultCaster;
 use PgSql\Result;
 
@@ -20,7 +19,7 @@ final class PgSqlCursor implements Cursor
 
     private readonly ResultCaster $resultCaster;
 
-    public function __construct(private ?Result $result, private readonly ?RowMapper $defaultMapper = null)
+    public function __construct(private ?Result $result)
     {
         $this->resultCaster = new ResultCaster();
     }
@@ -59,16 +58,10 @@ public function iterate() : \Generator
         $this->free();
     }
 
-    public function map(string $class, ?RowMapper $mapper = null) : \Generator
+    public function map(RowMapper $mapper) : \Generator
     {
-        $resolved = $mapper ?? $this->defaultMapper;
-
-        if ($resolved === null) {
-            throw MappingException::noMapperConfigured();
-        }
-
         foreach ($this->iterate() as $row) {
-            yield $resolved->map($class, $row);
+            yield $mapper->map($row);
         }
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper.php
index 1bb72c7847..80ca9dd0a9 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper.php
@@ -5,30 +5,20 @@
 namespace Flow\PostgreSql\Client;
 
 /**
- * Contract for mapping database rows to objects.
+ * Contract for mapping database rows to typed results.
  *
- * Implementations can provide various hydration strategies:
- * - Reflection-based mapping
- * - Constructor mapping
- * - Named arguments mapping
- * - Custom attribute-based mapping
- *
- * External libraries (like Symfony Serializer, JMS Serializer, etc.)
- * can implement this interface to integrate with the client.
+ * @template T
  */
 interface RowMapper
 {
     /**
-     * Map a database row to an object of the specified class.
-     *
-     * @template T of object
+     * Map a database row to a typed result.
      *
-     * @param class-string<T> $class Target class for mapping
      * @param array<string, mixed> $row Database row as associative array
      *
      * @throws Exception\MappingException When mapping fails
      *
-     * @return T Instance of the target class
+     * @return T
      */
-    public function map(string $class, array $row) : object;
+    public function map(array $row) : mixed;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper/ConstructorMapper.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper/ConstructorMapper.php
index f1ddd96a99..da321f8fa5 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper/ConstructorMapper.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper/ConstructorMapper.php
@@ -8,7 +8,7 @@
 use Flow\PostgreSql\Client\RowMapper;
 
 /**
- * Default mapper that maps database rows directly to constructor parameters.
+ * Maps database rows directly to constructor parameters.
  *
  * Requirements:
  * - SQL column names must match constructor parameter names exactly (1:1)
@@ -16,23 +16,34 @@
  * - Use SQL aliases if column names differ from parameter names:
  *   SELECT created_at AS createdAt FROM users
  *
- * For advanced mapping (case conversion, nested objects, attributes),
- * use the Valinor bridge.
+ * @template T of object
+ *
+ * @implements RowMapper<T>
  */
 final readonly class ConstructorMapper implements RowMapper
 {
-    public function map(string $class, array $row) : object
+    /**
+     * @param class-string<T> $class
+     */
+    public function __construct(private string $class)
+    {
+    }
+
+    /**
+     * @return T
+     */
+    public function map(array $row) : object
     {
-        if (!\class_exists($class)) {
-            throw MappingException::mappingFailed($class, 'Class does not exist');
+        if (!\class_exists($this->class)) {
+            throw MappingException::mappingFailed($this->class, 'Class does not exist');
         }
 
-        $reflection = new \ReflectionClass($class);
+        $reflection = new \ReflectionClass($this->class);
 
         $constructor = $reflection->getConstructor();
 
         if ($constructor === null) {
-            throw MappingException::mappingFailed($class, 'Class has no constructor');
+            throw MappingException::mappingFailed($this->class, 'Class has no constructor');
         }
 
         $args = [];
@@ -47,14 +58,14 @@ public function map(string $class, array $row) : object
             } elseif ($param->allowsNull()) {
                 $args[$paramName] = null;
             } else {
-                throw MappingException::propertyNotFound($class, $paramName);
+                throw MappingException::propertyNotFound($this->class, $paramName);
             }
         }
 
         try {
             return $reflection->newInstanceArgs($args);
         } catch (\Throwable $e) {
-            throw MappingException::mappingFailed($class, $e->getMessage());
+            throw MappingException::mappingFailed($this->class, $e->getMessage());
         }
     }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper/TypeMapper.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper/TypeMapper.php
new file mode 100644
index 0000000000..b0b1bbf2d1
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/RowMapper/TypeMapper.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Client\RowMapper;
+
+use Flow\PostgreSql\Client\RowMapper;
+use Flow\Types\Type;
+
+/**
+ * Maps database rows to typed arrays using flow-php/types.
+ *
+ * @template T
+ *
+ * @implements RowMapper<T>
+ */
+final readonly class TypeMapper implements RowMapper
+{
+    /**
+     * @param Type<T> $type
+     */
+    public function __construct(private Type $type)
+    {
+    }
+
+    /**
+     * @return T
+     */
+    public function map(array $row) : mixed
+    {
+        return $this->type->assert($row);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Telemetry/TraceableClient.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Telemetry/TraceableClient.php
index 31d557686c..ad78a2b2b5 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Telemetry/TraceableClient.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Telemetry/TraceableClient.php
@@ -9,7 +9,7 @@
 use Flow\PostgreSql\Client\Exception\QueryException;
 use Flow\PostgreSql\Client\Types\ValueConverters;
 use Flow\PostgreSql\Explain\Plan\Plan;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 use Flow\Telemetry\Logger\Logger;
 use Flow\Telemetry\Meter\Instrument\Histogram;
 use Flow\Telemetry\PackageVersion;
@@ -132,9 +132,9 @@ public function converters() : ValueConverters
         return $this->client->converters();
     }
 
-    public function cursor(SqlQuery|string $sql, array $parameters = []) : Cursor
+    public function cursor(Sql|string $sql, array $parameters = []) : Cursor
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
         $cursor = $this->client->cursor($sql, $parameters);
 
         if (!$this->telemetryConfig->options->traceQueries && !$this->telemetryConfig->options->collectMetrics) {
@@ -146,9 +146,9 @@ public function cursor(SqlQuery|string $sql, array $parameters = []) : Cursor
         return new TraceableCursor($cursor, $this->telemetryConfig, $this->client->parameters(), $query, $parameters);
     }
 
-    public function execute(SqlQuery|string $sql, array $parameters = []) : int
+    public function execute(Sql|string $sql, array $parameters = []) : int
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
@@ -162,9 +162,9 @@ function () use ($sql, $parameters, $query) : int {
         );
     }
 
-    public function explain(SqlQuery|string $sql, array $parameters = [], ?ExplainConfig $config = null) : Plan
+    public function explain(Sql|string $sql, array $parameters = [], ?ExplainConfig $config = null) : Plan
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
@@ -173,9 +173,9 @@ public function explain(SqlQuery|string $sql, array $parameters = [], ?ExplainCo
         );
     }
 
-    public function fetch(SqlQuery|string $sql, array $parameters = []) : ?array
+    public function fetch(Sql|string $sql, array $parameters = []) : ?array
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
@@ -189,9 +189,9 @@ function () use ($sql, $parameters, $query) : ?array {
         );
     }
 
-    public function fetchAll(SqlQuery|string $sql, array $parameters = []) : array
+    public function fetchAll(Sql|string $sql, array $parameters = []) : array
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
@@ -206,48 +206,46 @@ function () use ($sql, $parameters, $query) : array {
     }
 
     public function fetchAllInto(
-        string $class,
-        SqlQuery|string $sql,
+        RowMapper $mapper,
+        Sql|string $sql,
         array $parameters = [],
-        ?RowMapper $mapper = null,
     ) : array {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
             $parameters,
-            function () use ($class, $sql, $parameters, $mapper, $query) : array {
+            function () use ($mapper, $sql, $parameters, $query) : array {
                 $this->logQuery($query, $parameters);
 
-                return $this->client->fetchAllInto($class, $sql, $parameters, $mapper);
+                return $this->client->fetchAllInto($mapper, $sql, $parameters);
             },
             static fn (array $rows) => \count($rows),
         );
     }
 
     public function fetchInto(
-        string $class,
-        SqlQuery|string $sql,
+        RowMapper $mapper,
+        Sql|string $sql,
         array $parameters = [],
-        ?RowMapper $mapper = null,
-    ) : ?object {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+    ) : mixed {
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
             $parameters,
-            function () use ($class, $sql, $parameters, $mapper, $query) : ?object {
+            function () use ($mapper, $sql, $parameters, $query) : mixed {
                 $this->logQuery($query, $parameters);
 
-                return $this->client->fetchInto($class, $sql, $parameters, $mapper);
+                return $this->client->fetchInto($mapper, $sql, $parameters);
             },
-            static fn (?object $obj) => $obj !== null ? 1 : 0,
+            static fn (mixed $result) => $result !== null ? 1 : 0,
         );
     }
 
-    public function fetchOne(SqlQuery|string $sql, array $parameters = []) : array
+    public function fetchOne(Sql|string $sql, array $parameters = []) : array
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
@@ -262,28 +260,27 @@ function () use ($sql, $parameters, $query) : array {
     }
 
     public function fetchOneInto(
-        string $class,
-        SqlQuery|string $sql,
+        RowMapper $mapper,
+        Sql|string $sql,
         array $parameters = [],
-        ?RowMapper $mapper = null,
-    ) : object {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+    ) : mixed {
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
             $parameters,
-            function () use ($class, $sql, $parameters, $mapper, $query) : object {
+            function () use ($mapper, $sql, $parameters, $query) : mixed {
                 $this->logQuery($query, $parameters);
 
-                return $this->client->fetchOneInto($class, $sql, $parameters, $mapper);
+                return $this->client->fetchOneInto($mapper, $sql, $parameters);
             },
-            static fn (object $obj) => 1,
+            static fn (mixed $result) => 1,
         );
     }
 
-    public function fetchScalar(SqlQuery|string $sql, array $parameters = []) : mixed
+    public function fetchScalar(Sql|string $sql, array $parameters = []) : mixed
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
@@ -297,9 +294,9 @@ function () use ($sql, $parameters, $query) : mixed {
         );
     }
 
-    public function fetchScalarBool(SqlQuery|string $sql, array $parameters = []) : bool
+    public function fetchScalarBool(Sql|string $sql, array $parameters = []) : bool
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
@@ -313,9 +310,9 @@ function () use ($sql, $parameters, $query) : bool {
         );
     }
 
-    public function fetchScalarFloat(SqlQuery|string $sql, array $parameters = []) : float
+    public function fetchScalarFloat(Sql|string $sql, array $parameters = []) : float
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
@@ -329,9 +326,9 @@ function () use ($sql, $parameters, $query) : float {
         );
     }
 
-    public function fetchScalarInt(SqlQuery|string $sql, array $parameters = []) : int
+    public function fetchScalarInt(Sql|string $sql, array $parameters = []) : int
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
@@ -345,9 +342,9 @@ function () use ($sql, $parameters, $query) : int {
         );
     }
 
-    public function fetchScalarString(SqlQuery|string $sql, array $parameters = []) : string
+    public function fetchScalarString(Sql|string $sql, array $parameters = []) : string
     {
-        $query = $sql instanceof SqlQuery ? $sql->toSql() : $sql;
+        $query = $sql instanceof Sql ? $sql->toSql() : $sql;
 
         return $this->traceQuery(
             $query,
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Telemetry/TraceableCursor.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Telemetry/TraceableCursor.php
index e69e73921f..74d0c045fb 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Telemetry/TraceableCursor.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Telemetry/TraceableCursor.php
@@ -113,10 +113,10 @@ public function iterate() : \Generator
         }
     }
 
-    public function map(string $class, ?RowMapper $mapper = null) : \Generator
+    public function map(RowMapper $mapper) : \Generator
     {
         try {
-            foreach ($this->cursor->map($class, $mapper) as $object) {
+            foreach ($this->cursor->map($mapper) as $object) {
                 $this->rowsIterated++;
 
                 yield $object;
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/TypedValue.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/TypedValue.php
index 0af39f066e..1e5e276110 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/TypedValue.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/TypedValue.php
@@ -4,7 +4,7 @@
 
 namespace Flow\PostgreSql\Client;
 
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 
 /**
  * Wrapper for values that need explicit type specification.
@@ -16,7 +16,7 @@
 {
     public function __construct(
         public mixed $value,
-        public PostgreSqlType $targetType,
+        public ValueType $targetType,
     ) {
     }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/BoolArrayConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/BoolArrayConverter.php
index 083fc00822..2a5cbb9f95 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/BoolArrayConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/BoolArrayConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class BoolArrayConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::BOOL_ARRAY];
+        return [ValueType::BOOL_ARRAY];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/BooleanConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/BooleanConverter.php
index 854a7cca59..60514ddd22 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/BooleanConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/BooleanConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class BooleanConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::BOOL];
+        return [ValueType::BOOL];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/ByteaConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/ByteaConverter.php
index 949598b328..f7dbf3eb13 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/ByteaConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/ByteaConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class ByteaConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::BYTEA];
+        return [ValueType::BYTEA];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/CidrConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/CidrConverter.php
index 4bb11bdecd..8a8ba75713 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/CidrConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/CidrConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class CidrConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::CIDR];
+        return [ValueType::CIDR];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/DateConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/DateConverter.php
index 0453a2206b..affc2f1742 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/DateConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/DateConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class DateConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::DATE];
+        return [ValueType::DATE];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/DateTimeConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/DateTimeConverter.php
index 1819313a86..842fb5ab95 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/DateTimeConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/DateTimeConverter.php
@@ -5,15 +5,15 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class DateTimeConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::TIMESTAMP,
-            PostgreSqlType::TIMESTAMPTZ,
+            ValueType::TIMESTAMP,
+            ValueType::TIMESTAMPTZ,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/FloatArrayConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/FloatArrayConverter.php
index d492188537..1f264fbfc2 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/FloatArrayConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/FloatArrayConverter.php
@@ -5,15 +5,15 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class FloatArrayConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::FLOAT4_ARRAY,
-            PostgreSqlType::FLOAT8_ARRAY,
+            ValueType::FLOAT4_ARRAY,
+            ValueType::FLOAT8_ARRAY,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/FloatConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/FloatConverter.php
index 22798adf52..bb8382353f 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/FloatConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/FloatConverter.php
@@ -5,15 +5,15 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class FloatConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::FLOAT4,
-            PostgreSqlType::FLOAT8,
+            ValueType::FLOAT4,
+            ValueType::FLOAT8,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/InetConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/InetConverter.php
index af01b83155..e4eecdb1a8 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/InetConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/InetConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class InetConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::INET];
+        return [ValueType::INET];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntArrayConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntArrayConverter.php
index 5eaddc98f0..2509ff382a 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntArrayConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntArrayConverter.php
@@ -5,16 +5,16 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class IntArrayConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::INT2_ARRAY,
-            PostgreSqlType::INT4_ARRAY,
-            PostgreSqlType::INT8_ARRAY,
+            ValueType::INT2_ARRAY,
+            ValueType::INT4_ARRAY,
+            ValueType::INT8_ARRAY,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntegerConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntegerConverter.php
index 7861920f35..55c96af6b8 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntegerConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntegerConverter.php
@@ -5,16 +5,16 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class IntegerConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::INT2,
-            PostgreSqlType::INT4,
-            PostgreSqlType::INT8,
+            ValueType::INT2,
+            ValueType::INT4,
+            ValueType::INT8,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntervalConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntervalConverter.php
index 92d67e76ef..f81f17cb76 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntervalConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/IntervalConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class IntervalConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::INTERVAL];
+        return [ValueType::INTERVAL];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/JsonArrayConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/JsonArrayConverter.php
index bf8eade332..d4e9724bd0 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/JsonArrayConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/JsonArrayConverter.php
@@ -5,15 +5,15 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, StringEscaper, ValueConverter};
+use Flow\PostgreSql\Client\Types\{StringEscaper, ValueConverter, ValueType};
 
 final class JsonArrayConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::JSON_ARRAY,
-            PostgreSqlType::JSONB_ARRAY,
+            ValueType::JSON_ARRAY,
+            ValueType::JSONB_ARRAY,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/JsonConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/JsonConverter.php
index 44abd30a9b..42108f7a29 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/JsonConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/JsonConverter.php
@@ -5,15 +5,15 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class JsonConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::JSON,
-            PostgreSqlType::JSONB,
+            ValueType::JSON,
+            ValueType::JSONB,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/MoneyConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/MoneyConverter.php
index bedaebc670..b809043a91 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/MoneyConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/MoneyConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class MoneyConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::MONEY];
+        return [ValueType::MONEY];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/NumericConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/NumericConverter.php
index de9bf32f49..1bf8f083fe 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/NumericConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/NumericConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class NumericConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::NUMERIC];
+        return [ValueType::NUMERIC];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/StringConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/StringConverter.php
index 50123e2a71..cdc13f07f0 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/StringConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/StringConverter.php
@@ -5,17 +5,17 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class StringConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::TEXT,
-            PostgreSqlType::VARCHAR,
-            PostgreSqlType::CHAR,
-            PostgreSqlType::BPCHAR,
+            ValueType::TEXT,
+            ValueType::VARCHAR,
+            ValueType::CHAR,
+            ValueType::BPCHAR,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/TextArrayConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/TextArrayConverter.php
index 067149b292..4dcf9c0e67 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/TextArrayConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/TextArrayConverter.php
@@ -5,15 +5,15 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, StringEscaper, ValueConverter};
+use Flow\PostgreSql\Client\Types\{StringEscaper, ValueConverter, ValueType};
 
 final class TextArrayConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::TEXT_ARRAY,
-            PostgreSqlType::VARCHAR_ARRAY,
+            ValueType::TEXT_ARRAY,
+            ValueType::VARCHAR_ARRAY,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/TimeConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/TimeConverter.php
index df2df0140a..0216457d5a 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/TimeConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/TimeConverter.php
@@ -5,15 +5,15 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class TimeConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
         return [
-            PostgreSqlType::TIME,
-            PostgreSqlType::TIMETZ,
+            ValueType::TIME,
+            ValueType::TIMETZ,
         ];
     }
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/UuidArrayConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/UuidArrayConverter.php
index 3e0144bea0..e17c7af7a7 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/UuidArrayConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/UuidArrayConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class UuidArrayConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::UUID_ARRAY];
+        return [ValueType::UUID_ARRAY];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/UuidConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/UuidConverter.php
index 0f32601809..577d5560cf 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/UuidConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/Converter/UuidConverter.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\Client\Types\Converter;
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverter};
+use Flow\PostgreSql\Client\Types\{ValueConverter, ValueType};
 
 final class UuidConverter implements ValueConverter
 {
     public function supportedTypes() : array
     {
-        return [PostgreSqlType::UUID];
+        return [ValueType::UUID];
     }
 
     public function toDatabase(mixed $value) : ?string
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueConverter.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueConverter.php
index f3dd6f39a2..2a7029a01d 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueConverter.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueConverter.php
@@ -12,7 +12,7 @@ interface ValueConverter
     /**
      * Get the PostgreSQL types this converter handles.
      *
-     * @return array<PostgreSqlType>
+     * @return array<ValueType>
      */
     public function supportedTypes() : array;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueConverters.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueConverters.php
index ccb4832d42..aa2f8a4d6b 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueConverters.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueConverters.php
@@ -31,14 +31,14 @@ public static function create(PostgreSqlVersion $version = PostgreSqlVersion::V1
         return new self(self::defaultConverters($version));
     }
 
-    public function forPostgreSqlType(PostgreSqlType $type) : ValueConverter
+    public function forValueType(ValueType $type) : ValueConverter
     {
         if (isset($this->pgTypeConverters[$type->value])) {
             return $this->pgTypeConverters[$type->value];
         }
 
         if ($this->isArrayType($type)) {
-            return $this->pgTypeConverters[PostgreSqlType::TEXT_ARRAY->value]
+            return $this->pgTypeConverters[ValueType::TEXT_ARRAY->value]
                 ?? $this->fallbackConverter;
         }
 
@@ -48,7 +48,7 @@ public function forPostgreSqlType(PostgreSqlType $type) : ValueConverter
     /**
      * Check if a converter exists for the given PostgreSQL type.
      */
-    public function has(PostgreSqlType $type) : bool
+    public function has(ValueType $type) : bool
     {
         return isset($this->pgTypeConverters[$type->value]) || $this->isArrayType($type);
     }
@@ -66,25 +66,25 @@ public function register(ValueConverter $converter) : void
     /**
      * Unregister a converter for the given PostgreSQL type.
      */
-    public function unregister(PostgreSqlType $type) : void
+    public function unregister(ValueType $type) : void
     {
         unset($this->pgTypeConverters[$type->value]);
     }
 
-    private function isArrayType(PostgreSqlType $type) : bool
+    private function isArrayType(ValueType $type) : bool
     {
         return match ($type) {
-            PostgreSqlType::BOOL_ARRAY,
-            PostgreSqlType::INT2_ARRAY,
-            PostgreSqlType::INT4_ARRAY,
-            PostgreSqlType::INT8_ARRAY,
-            PostgreSqlType::TEXT_ARRAY,
-            PostgreSqlType::FLOAT4_ARRAY,
-            PostgreSqlType::FLOAT8_ARRAY,
-            PostgreSqlType::VARCHAR_ARRAY,
-            PostgreSqlType::UUID_ARRAY,
-            PostgreSqlType::JSON_ARRAY,
-            PostgreSqlType::JSONB_ARRAY => true,
+            ValueType::BOOL_ARRAY,
+            ValueType::INT2_ARRAY,
+            ValueType::INT4_ARRAY,
+            ValueType::INT8_ARRAY,
+            ValueType::TEXT_ARRAY,
+            ValueType::FLOAT4_ARRAY,
+            ValueType::FLOAT8_ARRAY,
+            ValueType::VARCHAR_ARRAY,
+            ValueType::UUID_ARRAY,
+            ValueType::JSON_ARRAY,
+            ValueType::JSONB_ARRAY => true,
             default => false,
         };
     }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/PostgreSqlType.php b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueType.php
similarity index 97%
rename from src/lib/postgresql/src/Flow/PostgreSql/Client/Types/PostgreSqlType.php
rename to src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueType.php
index 93d20e336f..ea1b1bb1d8 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/PostgreSqlType.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Client/Types/ValueType.php
@@ -4,7 +4,7 @@
 
 namespace Flow\PostgreSql\Client\Types;
 
-enum PostgreSqlType : int
+enum ValueType : int
 {
     case BIT = 1560;
     case BOOL = 16;
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/DSL/client.php b/src/lib/postgresql/src/Flow/PostgreSql/DSL/client.php
new file mode 100644
index 0000000000..52935ca784
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/DSL/client.php
@@ -0,0 +1,316 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\DSL;
+
+use Flow\ETL\Attribute\{DocumentationDSL, Module, Type as DSLType};
+use Flow\PostgreSql\Client;
+use Flow\PostgreSql\Client\{ConnectionParameters, TypedValue};
+use Flow\PostgreSql\Client\DsnParser;
+use Flow\PostgreSql\Client\Exception\ConnectionException;
+use Flow\PostgreSql\Client\Infrastructure\PgSql\PgSqlClient;
+use Flow\PostgreSql\Client\RowMapper\{ConstructorMapper, TypeMapper};
+use Flow\PostgreSql\Client\Telemetry\{PostgreSqlTelemetryConfig, PostgreSqlTelemetryOptions, TraceableClient};
+use Flow\PostgreSql\Client\Types\{ValueConverters, ValueType};
+use Flow\Telemetry\Telemetry;
+use Flow\Types\Type as FlowType;
+use Psr\Clock\ClockInterface;
+
+/**
+ * Create connection parameters from a connection string.
+ *
+ * Accepts libpq-style connection strings:
+ * - Key-value format: "host=localhost port=5432 dbname=mydb user=myuser password=secret"
+ * - URI format: "postgresql://user:password@localhost:5432/dbname"
+ *
+ * @example
+ * $params = pgsql_connection('host=localhost dbname=mydb');
+ * $params = pgsql_connection('postgresql://user:pass@localhost/mydb');
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function pgsql_connection(#[\SensitiveParameter] string $connectionString) : ConnectionParameters
+{
+    return ConnectionParameters::fromString($connectionString);
+}
+
+/**
+ * Create connection parameters from a DSN string.
+ *
+ * Parses standard PostgreSQL DSN format commonly used in environment variables
+ * (e.g., DATABASE_URL). Supports postgres://, postgresql://, and pgsql:// schemes.
+ *
+ * @param string $dsn DSN string in format: postgres://user:password@host:port/database?options
+ *
+ * @throws Client\DsnParserException If the DSN cannot be parsed
+ *
+ * @example
+ * $params = pgsql_connection_dsn('postgres://myuser:secret@localhost:5432/mydb');
+ * $params = pgsql_connection_dsn('postgresql://user:pass@db.example.com/app?sslmode=require');
+ * $params = pgsql_connection_dsn('pgsql://user:pass@localhost/mydb'); // Symfony/Doctrine format
+ * $params = pgsql_connection_dsn(getenv('DATABASE_URL'));
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function pgsql_connection_dsn(#[\SensitiveParameter] string $dsn) : ConnectionParameters
+{
+    return (new DsnParser())->parse($dsn);
+}
+
+/**
+ * Create connection parameters from individual values.
+ *
+ * Allows specifying connection parameters individually for better type safety
+ * and IDE support.
+ *
+ * @param string $database Database name (required)
+ * @param string $host Hostname (default: localhost)
+ * @param int $port Port number (default: 5432)
+ * @param null|string $user Username (optional)
+ * @param null|string $password Password (optional)
+ * @param array<string, string> $options Additional libpq options
+ *
+ * @example
+ * $params = pgsql_connection_params(
+ *     database: 'mydb',
+ *     host: 'localhost',
+ *     user: 'myuser',
+ *     password: 'secret',
+ * );
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function pgsql_connection_params(
+    string $database,
+    string $host = 'localhost',
+    int $port = 5432,
+    ?string $user = null,
+    ?string $password = null,
+    array $options = [],
+) : ConnectionParameters {
+    return ConnectionParameters::fromParams(
+        database: $database,
+        host: $host,
+        port: $port,
+        user: $user,
+        password: $password,
+        options: $options,
+    );
+}
+
+/**
+ * Create a PostgreSQL client using ext-pgsql.
+ *
+ * The client connects immediately and is ready to execute queries.
+ *
+ * @param Client\ConnectionParameters $params Connection parameters
+ * @param null|ValueConverters $valueConverters Custom type converters (optional)
+ *
+ * @throws ConnectionException If connection fails
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function pgsql_client(
+    ConnectionParameters $params,
+    ?ValueConverters $valueConverters = null,
+) : Client\Client {
+    return PgSqlClient::connect($params, $valueConverters);
+}
+
+/**
+ * Create telemetry options for PostgreSQL client instrumentation.
+ *
+ * Controls which telemetry signals (traces, metrics, logs) are enabled
+ * and how query information is captured.
+ *
+ * @param bool $traceQueries Create spans for query execution (default: true)
+ * @param bool $traceTransactions Create spans for transactions (default: true)
+ * @param bool $collectMetrics Collect duration and row count metrics (default: true)
+ * @param bool $logQueries Log executed queries (default: false)
+ * @param null|int $maxQueryLength Maximum query text length in telemetry (default: 1000, null = unlimited)
+ * @param bool $includeParameters Include query parameters in telemetry (default: false, security consideration)
+ *
+ * @example
+ * // Default options (traces and metrics enabled)
+ * $options = postgresql_telemetry_options();
+ *
+ * // Enable query logging
+ * $options = postgresql_telemetry_options(logQueries: true);
+ *
+ * // Disable all but metrics
+ * $options = postgresql_telemetry_options(
+ *     traceQueries: false,
+ *     traceTransactions: false,
+ *     collectMetrics: true,
+ * );
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function postgresql_telemetry_options(
+    bool $traceQueries = true,
+    bool $traceTransactions = true,
+    bool $collectMetrics = true,
+    bool $logQueries = false,
+    ?int $maxQueryLength = 1000,
+    bool $includeParameters = false,
+    ?int $maxParameters = 10,
+    ?int $maxParameterLength = 100,
+) : PostgreSqlTelemetryOptions {
+    return new PostgreSqlTelemetryOptions(
+        traceQueries: $traceQueries,
+        traceTransactions: $traceTransactions,
+        collectMetrics: $collectMetrics,
+        logQueries: $logQueries,
+        maxQueryLength: $maxQueryLength,
+        includeParameters: $includeParameters,
+        maxParameters: $maxParameters,
+        maxParameterLength: $maxParameterLength,
+    );
+}
+
+/**
+ * Create telemetry configuration for PostgreSQL client.
+ *
+ * Bundles telemetry instance, clock, and options needed to instrument a PostgreSQL client.
+ *
+ * @param Telemetry $telemetry The telemetry instance
+ * @param ClockInterface $clock Clock for timestamps
+ * @param null|PostgreSqlTelemetryOptions $options Telemetry options (default: all enabled)
+ *
+ * @example
+ * $config = postgresql_telemetry_config(
+ *     telemetry(resource(['service.name' => 'my-app'])),
+ *     new SystemClock(),
+ * );
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function postgresql_telemetry_config(
+    Telemetry $telemetry,
+    ClockInterface $clock,
+    ?PostgreSqlTelemetryOptions $options = null,
+) : PostgreSqlTelemetryConfig {
+    return new PostgreSqlTelemetryConfig(
+        telemetry: $telemetry,
+        clock: $clock,
+        options: $options ?? new PostgreSqlTelemetryOptions(),
+    );
+}
+
+/**
+ * Wrap a PostgreSQL client with telemetry instrumentation.
+ *
+ * Returns a decorator that adds spans, metrics, and logs to all
+ * query and transaction operations following OpenTelemetry conventions.
+ *
+ * @param Client\Client $client The PostgreSQL client to instrument
+ * @param PostgreSqlTelemetryConfig $telemetryConfig Telemetry configuration
+ *
+ * @example
+ * $client = pgsql_client(pgsql_connection('host=localhost dbname=mydb'));
+ *
+ * $traceableClient = traceable_postgresql_client(
+ *     $client,
+ *     postgresql_telemetry_config(
+ *         telemetry(resource(['service.name' => 'my-app'])),
+ *         new SystemClock(),
+ *         postgresql_telemetry_options(
+ *             traceQueries: true,
+ *             traceTransactions: true,
+ *             collectMetrics: true,
+ *             logQueries: true,
+ *             maxQueryLength: 500,
+ *         ),
+ *     ),
+ * );
+ *
+ * // All operations now traced
+ * $traceableClient->transaction(function (Client $client) {
+ *     $user = $client->fetchOne('SELECT * FROM users WHERE id = $1', [123]);
+ *     $client->execute('UPDATE users SET last_login = NOW() WHERE id = $1', [123]);
+ * });
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function traceable_postgresql_client(
+    Client\Client $client,
+    PostgreSqlTelemetryConfig $telemetryConfig,
+) : TraceableClient {
+    return new TraceableClient($client, $telemetryConfig);
+}
+
+/**
+ * Create a default constructor-based row mapper.
+ *
+ * Maps database rows directly to constructor parameters.
+ * Column names must match parameter names exactly (1:1).
+ * Use SQL aliases if column names differ from parameter names.
+ *
+ * @example
+ * // DTO where column names match parameter names
+ * readonly class User {
+ *     public function __construct(
+ *         public int $id,
+ *         public string $name,
+ *         public string $email,
+ *     ) {}
+ * }
+ *
+ * // Usage
+ * $client = pgsql_client(pgsql_connection('...'), mapper: pgsql_mapper());
+ *
+ * // For snake_case columns, use SQL aliases
+ * $user = $client->fetchInto(
+ *     User::class,
+ *     'SELECT id, user_name AS name, user_email AS email FROM users WHERE id = $1',
+ *     [1]
+ * );
+ */
+/**
+ * @template T of object
+ *
+ * @param class-string<T> $class
+ *
+ * @return ConstructorMapper<T>
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function constructor_mapper(string $class) : ConstructorMapper
+{
+    return new ConstructorMapper($class);
+}
+
+/**
+ * @template T
+ *
+ * @param FlowType<T> $type
+ *
+ * @return TypeMapper<T>
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function type_mapper(FlowType $type) : TypeMapper
+{
+    return new TypeMapper($type);
+}
+
+/**
+ * Wrap a value with explicit PostgreSQL type information for parameter binding.
+ *
+ * Use when auto-detection isn't sufficient or when you need to specify
+ * the exact PostgreSQL type (since one PHP type can map to multiple PostgreSQL types):
+ * - int could be INT2, INT4, or INT8
+ * - string could be TEXT, VARCHAR, or CHAR
+ * - array must always use typed() since auto-detection cannot determine element type
+ * - DateTimeInterface could be TIMESTAMP or TIMESTAMPTZ
+ * - Json could be JSON or JSONB
+ *
+ * @param mixed $value The value to bind
+ * @param ValueType $targetType The PostgreSQL type to convert the value to
+ *
+ * @example
+ * $client->fetch(
+ *     'SELECT * FROM users WHERE id = $1 AND tags = $2',
+ *     [
+ *         typed('550e8400-e29b-41d4-a716-446655440000', ValueType::UUID),
+ *         typed(['tag1', 'tag2'], ValueType::TEXT_ARRAY),
+ *     ]
+ * );
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function typed(mixed $value, ValueType $targetType) : TypedValue
+{
+    return new TypedValue($value, $targetType);
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/DSL/condition.php b/src/lib/postgresql/src/Flow/PostgreSql/DSL/condition.php
new file mode 100644
index 0000000000..6c60f9adc2
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/DSL/condition.php
@@ -0,0 +1,605 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\DSL;
+
+use Flow\ETL\Attribute\{DocumentationDSL, Module, Type as DSLType};
+use Flow\PostgreSql\Protobuf\AST\Node;
+use Flow\PostgreSql\QueryBuilder\Condition\{
+    All,
+    AndCondition,
+    Any,
+    Between,
+    BooleanCondition,
+    Comparison,
+    ComparisonOperator,
+    Condition,
+    ConditionBuilder,
+    Exists,
+    In,
+    IsDistinctFrom,
+    IsNull,
+    Like,
+    NotCondition,
+    OperatorCondition,
+    OrCondition,
+    SimilarTo
+};
+use Flow\PostgreSql\QueryBuilder\Expression\{BinaryExpression, Expression};
+use Flow\PostgreSql\QueryBuilder\Select\SelectFinalStep;
+
+/**
+ * Create an equality comparison (column = value).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function eq(string|Expression $left, string|Expression $right) : Comparison
+{
+    return new Comparison(
+        $left instanceof Expression ? $left : col($left),
+        ComparisonOperator::EQ,
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a not-equal comparison (column != value).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function ne(string|Expression $left, string|Expression $right) : Comparison
+{
+    return new Comparison(
+        $left instanceof Expression ? $left : col($left),
+        ComparisonOperator::NEQ,
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a less-than comparison (column < value).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function lt(string|Expression $left, string|Expression $right) : Comparison
+{
+    return new Comparison(
+        $left instanceof Expression ? $left : col($left),
+        ComparisonOperator::LT,
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a less-than-or-equal comparison (column <= value).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function le(string|Expression $left, string|Expression $right) : Comparison
+{
+    return new Comparison(
+        $left instanceof Expression ? $left : col($left),
+        ComparisonOperator::LTE,
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a greater-than comparison (column > value).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function gt(string|Expression $left, string|Expression $right) : Comparison
+{
+    return new Comparison(
+        $left instanceof Expression ? $left : col($left),
+        ComparisonOperator::GT,
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a greater-than-or-equal comparison (column >= value).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function ge(string|Expression $left, string|Expression $right) : Comparison
+{
+    return new Comparison(
+        $left instanceof Expression ? $left : col($left),
+        ComparisonOperator::GTE,
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a BETWEEN condition.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function between(string|Expression $expr, string|Expression $low, string|Expression $high, bool $not = false) : Between
+{
+    return new Between(
+        $expr instanceof Expression ? $expr : col($expr),
+        $low instanceof Expression ? $low : col($low),
+        $high instanceof Expression ? $high : col($high),
+        $not,
+    );
+}
+
+/**
+ * Create an IN condition.
+ *
+ * @param Expression|string $expr Expression to check
+ * @param list<Expression> $values List of values
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function in_(string|Expression $expr, array $values) : In
+{
+    return new In($expr instanceof Expression ? $expr : col($expr), \array_values($values));
+}
+
+/**
+ * Create an IS NULL condition.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function is_null(string|Expression $expr, bool $not = false) : IsNull
+{
+    return new IsNull($expr instanceof Expression ? $expr : col($expr), $not);
+}
+
+/**
+ * Create a LIKE condition.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function like(string|Expression $expr, string|Expression $pattern, bool $caseInsensitive = false, bool $negated = false) : Like
+{
+    return new Like(
+        $expr instanceof Expression ? $expr : col($expr),
+        $pattern instanceof Expression ? $pattern : col($pattern),
+        $caseInsensitive,
+        negated: $negated,
+    );
+}
+
+/**
+ * Create a SIMILAR TO condition.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function similar_to(string|Expression $expr, string|Expression $pattern) : SimilarTo
+{
+    return new SimilarTo(
+        $expr instanceof Expression ? $expr : col($expr),
+        $pattern instanceof Expression ? $pattern : col($pattern),
+    );
+}
+
+/**
+ * Create an IS DISTINCT FROM condition.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function distinct_from(string|Expression $left, string|Expression $right, bool $not = false) : IsDistinctFrom
+{
+    return new IsDistinctFrom(
+        $left instanceof Expression ? $left : col($left),
+        $right instanceof Expression ? $right : col($right),
+        $not,
+    );
+}
+
+/**
+ * Create an EXISTS condition.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function exists(SelectFinalStep $subquery) : Exists
+{
+    $node = new Node();
+    $node->setSelectStmt($subquery->toAst());
+
+    return new Exists($node);
+}
+
+/**
+ * Create an ANY condition with a subquery or array expression.
+ *
+ * Example: any_(col('id'), ComparisonOperator::EQ, select(col('user_id'))->from(table('orders')))
+ * Example: any_(col('attnum', 'a'), ComparisonOperator::EQ, col('conkey', 'con'))
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function any_(string|Expression $left, ComparisonOperator $operator, Expression|SelectFinalStep $arrayOrSubquery) : Any
+{
+    $left = $left instanceof Expression ? $left : col($left);
+
+    if ($arrayOrSubquery instanceof SelectFinalStep) {
+        $node = new Node();
+        $node->setSelectStmt($arrayOrSubquery->toAst());
+
+        return new Any($left, $operator, $node);
+    }
+
+    return new Any($left, $operator, $arrayOrSubquery);
+}
+
+/**
+ * Create an ALL condition with a subquery or array expression.
+ *
+ * Example: all_(col('id'), ComparisonOperator::EQ, select(col('user_id'))->from(table('orders')))
+ * Example: all_(col('value'), ComparisonOperator::GT, col('thresholds'))
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function all_(string|Expression $left, ComparisonOperator $operator, Expression|SelectFinalStep $arrayOrSubquery) : All
+{
+    $left = $left instanceof Expression ? $left : col($left);
+
+    if ($arrayOrSubquery instanceof SelectFinalStep) {
+        $node = new Node();
+        $node->setSelectStmt($arrayOrSubquery->toAst());
+
+        return new All($left, $operator, $node);
+    }
+
+    return new All($left, $operator, $arrayOrSubquery);
+}
+
+/**
+ * Wrap an expression as a boolean condition for use in WHERE/HAVING/JOIN ON.
+ *
+ * Example: is_true(col('is_active')) — uses a boolean column in WHERE clause.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function is_true(string|Expression $expr) : BooleanCondition
+{
+    return new BooleanCondition($expr instanceof Expression ? $expr : col($expr));
+}
+
+/**
+ * Create a NOT LIKE condition.
+ *
+ * Example: not_like(col('name'), literal('pg_%'))
+ * Produces: name NOT LIKE 'pg_%'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function not_like(string|Expression $expr, string|Expression $pattern, bool $caseInsensitive = false) : Like
+{
+    return new Like(
+        $expr instanceof Expression ? $expr : col($expr),
+        $pattern instanceof Expression ? $pattern : col($pattern),
+        $caseInsensitive,
+        negated: true,
+    );
+}
+
+/**
+ * Create a condition builder for fluent condition composition.
+ *
+ * This builder allows incremental condition building with a fluent API:
+ *
+ * ```php
+ * $builder = conditions();
+ *
+ * if ($hasFilter) {
+ *     $builder = $builder->and(eq(col('status'), literal('active')));
+ * }
+ *
+ * if (!$builder->isEmpty()) {
+ *     $query = select()->from(table('users'))->where($builder);
+ * }
+ * ```
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function conditions() : ConditionBuilder
+{
+    return ConditionBuilder::create();
+}
+
+/**
+ * Combine conditions with AND.
+ *
+ * @param Condition ...$conditions Conditions to combine
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function and_(Condition ...$conditions) : AndCondition
+{
+    return new AndCondition(...$conditions);
+}
+
+/**
+ * Combine conditions with OR.
+ *
+ * @param Condition ...$conditions Conditions to combine
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function or_(Condition ...$conditions) : OrCondition
+{
+    return new OrCondition(...$conditions);
+}
+
+/**
+ * Negate a condition or expression with NOT.
+ *
+ * Accepts both Condition and Expression — NOT always produces a boolean result.
+ * Can be used in WHERE clauses and SELECT lists (via ->as('alias')).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function not_(string|Expression $expression) : NotCondition
+{
+    return new NotCondition($expression instanceof Expression ? $expression : col($expression));
+}
+
+/**
+ * Create a JSONB contains condition (@>).
+ *
+ * Example: json_contains(col('metadata'), literal_json('{"category": "electronics"}'))
+ * Produces: metadata @> '{"category": "electronics"}'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function json_contains(string|Expression $left, string|Expression $right) : OperatorCondition
+{
+    return new OperatorCondition(
+        $left instanceof Expression ? $left : col($left),
+        '@>',
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a JSONB is contained by condition (<@).
+ *
+ * Example: json_contained_by(col('metadata'), literal_json('{"category": "electronics", "price": 100}'))
+ * Produces: metadata <@ '{"category": "electronics", "price": 100}'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function json_contained_by(string|Expression $left, string|Expression $right) : OperatorCondition
+{
+    return new OperatorCondition(
+        $left instanceof Expression ? $left : col($left),
+        '<@',
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a JSON field access expression (->).
+ * Returns JSON.
+ *
+ * Example: json_get(col('metadata'), literal_string('category'))
+ * Produces: metadata -> 'category'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function json_get(string|Expression $expr, string|Expression $key) : BinaryExpression
+{
+    return new BinaryExpression(
+        $expr instanceof Expression ? $expr : col($expr),
+        '->',
+        $key instanceof Expression ? $key : col($key),
+    );
+}
+
+/**
+ * Create a JSON field access expression (->>).
+ * Returns text.
+ *
+ * Example: json_get_text(col('metadata'), literal_string('name'))
+ * Produces: metadata ->> 'name'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function json_get_text(string|Expression $expr, string|Expression $key) : BinaryExpression
+{
+    return new BinaryExpression(
+        $expr instanceof Expression ? $expr : col($expr),
+        '->>',
+        $key instanceof Expression ? $key : col($key),
+    );
+}
+
+/**
+ * Create a JSON path access expression (#>).
+ * Returns JSON.
+ *
+ * Example: json_path(col('metadata'), literal_string('{category,name}'))
+ * Produces: metadata #> '{category,name}'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function json_path(string|Expression $expr, string|Expression $path) : BinaryExpression
+{
+    return new BinaryExpression(
+        $expr instanceof Expression ? $expr : col($expr),
+        '#>',
+        $path instanceof Expression ? $path : col($path),
+    );
+}
+
+/**
+ * Create a JSON path access expression (#>>).
+ * Returns text.
+ *
+ * Example: json_path_text(col('metadata'), literal_string('{category,name}'))
+ * Produces: metadata #>> '{category,name}'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function json_path_text(string|Expression $expr, string|Expression $path) : BinaryExpression
+{
+    return new BinaryExpression(
+        $expr instanceof Expression ? $expr : col($expr),
+        '#>>',
+        $path instanceof Expression ? $path : col($path),
+    );
+}
+
+/**
+ * Create a JSONB key exists condition (?).
+ *
+ * Example: json_exists(col('metadata'), literal_string('category'))
+ * Produces: metadata ? 'category'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function json_exists(string|Expression $expr, string|Expression $key) : OperatorCondition
+{
+    return new OperatorCondition(
+        $expr instanceof Expression ? $expr : col($expr),
+        '?',
+        $key instanceof Expression ? $key : col($key),
+    );
+}
+
+/**
+ * Create a JSONB any key exists condition (?|).
+ *
+ * Example: json_exists_any(col('metadata'), array_expr([literal('category'), literal('name')]))
+ * Produces: metadata ?| array['category', 'name']
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function json_exists_any(string|Expression $expr, string|Expression $keys) : OperatorCondition
+{
+    return new OperatorCondition(
+        $expr instanceof Expression ? $expr : col($expr),
+        '?|',
+        $keys instanceof Expression ? $keys : col($keys),
+    );
+}
+
+/**
+ * Create a JSONB all keys exist condition (?&).
+ *
+ * Example: json_exists_all(col('metadata'), array_expr([literal('category'), literal('name')]))
+ * Produces: metadata ?& array['category', 'name']
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function json_exists_all(string|Expression $expr, string|Expression $keys) : OperatorCondition
+{
+    return new OperatorCondition(
+        $expr instanceof Expression ? $expr : col($expr),
+        '?&',
+        $keys instanceof Expression ? $keys : col($keys),
+    );
+}
+
+/**
+ * Create an array contains condition (@>).
+ *
+ * Example: array_contains(col('tags'), array_expr([literal('sale')]))
+ * Produces: tags @> ARRAY['sale']
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function array_contains(string|Expression $left, string|Expression $right) : OperatorCondition
+{
+    return new OperatorCondition(
+        $left instanceof Expression ? $left : col($left),
+        '@>',
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create an array is contained by condition (<@).
+ *
+ * Example: array_contained_by(col('tags'), array_expr([literal('sale'), literal('featured'), literal('new')]))
+ * Produces: tags <@ ARRAY['sale', 'featured', 'new']
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function array_contained_by(string|Expression $left, string|Expression $right) : OperatorCondition
+{
+    return new OperatorCondition(
+        $left instanceof Expression ? $left : col($left),
+        '<@',
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create an array overlap condition (&&).
+ *
+ * Example: array_overlap(col('tags'), array_expr([literal('sale'), literal('featured')]))
+ * Produces: tags && ARRAY['sale', 'featured']
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function array_overlap(string|Expression $left, string|Expression $right) : OperatorCondition
+{
+    return new OperatorCondition(
+        $left instanceof Expression ? $left : col($left),
+        '&&',
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a POSIX regex match condition (~).
+ * Case-sensitive.
+ *
+ * Example: regex_match(col('email'), literal_string('.*@gmail\\.com'))
+ *
+ * Produces: email ~ '.*@gmail\.com'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function regex_match(string|Expression $expr, string|Expression $pattern) : OperatorCondition
+{
+    return new OperatorCondition(
+        $expr instanceof Expression ? $expr : col($expr),
+        '~',
+        $pattern instanceof Expression ? $pattern : col($pattern),
+    );
+}
+
+/**
+ * Create a POSIX regex match condition (~*).
+ * Case-insensitive.
+ *
+ * Example: regex_imatch(col('email'), literal_string('.*@gmail\\.com'))
+ *
+ * Produces: email ~* '.*@gmail\.com'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function regex_imatch(string|Expression $expr, string|Expression $pattern) : OperatorCondition
+{
+    return new OperatorCondition(
+        $expr instanceof Expression ? $expr : col($expr),
+        '~*',
+        $pattern instanceof Expression ? $pattern : col($pattern),
+    );
+}
+
+/**
+ * Create a POSIX regex not match condition (!~).
+ * Case-sensitive.
+ *
+ * Example: not_regex_match(col('email'), literal_string('.*@spam\\.com'))
+ *
+ * Produces: email !~ '.*@spam\.com'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function not_regex_match(string|Expression $expr, string|Expression $pattern) : OperatorCondition
+{
+    return new OperatorCondition(
+        $expr instanceof Expression ? $expr : col($expr),
+        '!~',
+        $pattern instanceof Expression ? $pattern : col($pattern),
+    );
+}
+
+/**
+ * Create a POSIX regex not match condition (!~*).
+ * Case-insensitive.
+ *
+ * Example: not_regex_imatch(col('email'), literal_string('.*@spam\\.com'))
+ *
+ * Produces: email !~* '.*@spam\.com'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function not_regex_imatch(string|Expression $expr, string|Expression $pattern) : OperatorCondition
+{
+    return new OperatorCondition(
+        $expr instanceof Expression ? $expr : col($expr),
+        '!~*',
+        $pattern instanceof Expression ? $pattern : col($pattern),
+    );
+}
+
+/**
+ * Create a full-text search match condition (@@).
+ *
+ * Example: text_search_match(col('document'), func('to_tsquery', [literal('english'), literal('hello & world')]))
+ * Produces: document @@ to_tsquery('english', 'hello & world')
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function text_search_match(string|Expression $document, string|Expression $query) : OperatorCondition
+{
+    return new OperatorCondition(
+        $document instanceof Expression ? $document : col($document),
+        '@@',
+        $query instanceof Expression ? $query : col($query),
+    );
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/DSL/functions.php b/src/lib/postgresql/src/Flow/PostgreSql/DSL/functions.php
deleted file mode 100644
index 019b05f518..0000000000
--- a/src/lib/postgresql/src/Flow/PostgreSql/DSL/functions.php
+++ /dev/null
@@ -1,3440 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\DSL;
-
-use Flow\ETL\Attribute\{DocumentationDSL, Module, Type as DSLType};
-use Flow\PostgreSql\AST\Transformers\{CountModifier, ExplainConfig, ExplainModifier, KeysetColumn, KeysetPaginationConfig, KeysetPaginationModifier, PaginationConfig, PaginationModifier, SortOrder};
-use Flow\PostgreSql\Client;
-use Flow\PostgreSql\Client\{ConnectionParameters, RowMapper, TypedValue};
-use Flow\PostgreSql\Client\DsnParser;
-use Flow\PostgreSql\Client\Exception\ConnectionException;
-use Flow\PostgreSql\Client\Infrastructure\PgSql\PgSqlClient;
-use Flow\PostgreSql\Client\RowMapper\ConstructorMapper;
-use Flow\PostgreSql\Client\Telemetry\{PostgreSqlTelemetryConfig, PostgreSqlTelemetryOptions, TraceableClient};
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, ValueConverters};
-use Flow\PostgreSql\{DeparseOptions, ParsedQuery, Parser};
-use Flow\PostgreSql\Explain\Analyzer\PlanAnalyzer;
-use Flow\PostgreSql\Explain\ExplainParser;
-use Flow\PostgreSql\Explain\Plan\Plan;
-use Flow\PostgreSql\Extractors\{Columns, Functions, OrderBy as OrderByExtractor, QueryDepth, Tables};
-use Flow\PostgreSql\Protobuf\AST\Node;
-use Flow\PostgreSql\QueryBuilder\Clause\{
-    CTE,
-    CTEMaterialization,
-    ConflictTarget,
-    FrameBound,
-    FrameExclusion,
-    FrameMode,
-    LockStrength,
-    LockWaitPolicy,
-    LockingClause,
-    NullsPosition,
-    OnConflictClause,
-    OrderBy,
-    ReturningClause,
-    SortDirection,
-    WindowDefinition,
-    WindowFrame
-};
-use Flow\PostgreSql\QueryBuilder\Clause\WithClause;
-use Flow\PostgreSql\QueryBuilder\Condition\{
-    All,
-    AndCondition,
-    Any,
-    Between,
-    Comparison,
-    ComparisonOperator,
-    Condition,
-    ConditionBuilder,
-    Exists,
-    In,
-    IsDistinctFrom,
-    IsNull,
-    Like,
-    NotCondition,
-    OperatorCondition,
-    OrCondition,
-    RawCondition,
-    SimilarTo
-};
-use Flow\PostgreSql\QueryBuilder\Cursor\{
-    CloseCursorBuilder,
-    CloseCursorFinalStep,
-    DeclareCursorBuilder,
-    DeclareCursorOptionsStep,
-    FetchCursorBuilder
-};
-use Flow\PostgreSql\QueryBuilder\Delete\{DeleteBuilder, DeleteFromStep};
-use Flow\PostgreSql\QueryBuilder\Exception\InvalidExpressionException;
-use Flow\PostgreSql\QueryBuilder\Expression\{
-    AggregateCall,
-    ArrayExpression,
-    BinaryExpression,
-    CaseExpression,
-    Coalesce,
-    Column,
-    Expression,
-    FunctionCall,
-    Greatest,
-    Least,
-    Literal,
-    NullIf,
-    Parameter,
-    RawExpression,
-    RowExpression,
-    SQLValueFunctionExpression,
-    Star,
-    Subquery,
-    TypeCast,
-    WhenClause,
-    WindowFunction
-};
-use Flow\PostgreSql\QueryBuilder\Factory\{AlterFactory, CreateFactory, DropFactory};
-use Flow\PostgreSql\QueryBuilder\Factory\CopyFactory;
-use Flow\PostgreSql\QueryBuilder\Insert\{BulkInsert, InsertBuilder, InsertIntoStep};
-use Flow\PostgreSql\QueryBuilder\Merge\{MergeBuilder, MergeUsingStep};
-use Flow\PostgreSql\QueryBuilder\{QualifiedIdentifier, SqlQuery};
-use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, DataType, ReferentialAction};
-use Flow\PostgreSql\QueryBuilder\Schema\Constraint\{CheckConstraint, ForeignKeyConstraint, PrimaryKeyConstraint, UniqueConstraint};
-use Flow\PostgreSql\QueryBuilder\Schema\Function\{
-    CallBuilder,
-    CallFinalStep,
-    DoBuilder,
-    DoFinalStep,
-    FunctionArgument
-};
-use Flow\PostgreSql\QueryBuilder\Schema\Grant\{
-    GrantBuilder,
-    GrantOnStep,
-    GrantRoleBuilder,
-    GrantRoleToStep,
-    RevokeBuilder,
-    RevokeOnStep,
-    RevokeRoleBuilder,
-    RevokeRoleFromStep,
-    TablePrivilege
-};
-use Flow\PostgreSql\QueryBuilder\Schema\Index\{IndexColumn, IndexMethod};
-use Flow\PostgreSql\QueryBuilder\Schema\Index\Reindex\{ReindexBuilder, ReindexFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Ownership\{
-    DropOwnedBuilder,
-    DropOwnedFinalStep,
-    ReassignOwnedBuilder,
-    ReassignOwnedToStep
-};
-use Flow\PostgreSql\QueryBuilder\Schema\Session\{
-    ResetRoleBuilder,
-    ResetRoleFinalStep,
-    SetRoleBuilder,
-    SetRoleFinalStep
-};
-use Flow\PostgreSql\QueryBuilder\Schema\Truncate\{TruncateBuilder, TruncateFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Type\TypeAttribute;
-use Flow\PostgreSql\QueryBuilder\Schema\View\RefreshMaterializedView\{RefreshMatViewOptionsStep, RefreshMaterializedViewBuilder};
-use Flow\PostgreSql\QueryBuilder\Select\{SelectBuilder, SelectFinalStep, SelectSelectStep};
-use Flow\PostgreSql\QueryBuilder\Table\{
-    DerivedTable,
-    Lateral,
-    Table,
-    TableFunction,
-    TableReference,
-    ValuesTable
-};
-use Flow\PostgreSql\QueryBuilder\Transaction\{
-    BeginBuilder,
-    BeginOptionsStep,
-    CommitBuilder,
-    CommitOptionsStep,
-    PreparedTransactionBuilder,
-    PreparedTransactionFinalStep,
-    RollbackBuilder,
-    RollbackOptionsStep,
-    SavepointBuilder,
-    SavepointFinalStep,
-    SetTransactionBuilder,
-    SetTransactionFinalStep,
-    SetTransactionOptionsStep
-};
-use Flow\PostgreSql\QueryBuilder\Update\{UpdateBuilder, UpdateTableStep};
-use Flow\PostgreSql\QueryBuilder\Utility\{
-    AnalyzeBuilder,
-    AnalyzeFinalStep,
-    ClusterBuilder,
-    ClusterFinalStep,
-    CommentBuilder,
-    CommentFinalStep,
-    CommentTarget,
-    DiscardBuilder,
-    DiscardFinalStep,
-    DiscardType,
-    ExplainBuilder,
-    ExplainFinalStep,
-    ExplainFormat,
-    LockBuilder,
-    LockFinalStep,
-    VacuumBuilder,
-    VacuumFinalStep
-};
-use Flow\PostgreSql\QueryBuilder\With\WithBuilder;
-use Flow\Telemetry\Telemetry;
-use Psr\Clock\ClockInterface;
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_parser() : Parser
-{
-    return new Parser();
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_parse(string $sql) : ParsedQuery
-{
-    return (new Parser())->parse($sql);
-}
-
-/**
- * Returns a fingerprint of the given SQL query.
- * Literal values are normalized so they won't affect the fingerprint.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_fingerprint(string $sql) : ?string
-{
-    return (new Parser())->fingerprint($sql);
-}
-
-/**
- * Normalize SQL query by replacing literal values and named parameters with positional parameters.
- * WHERE id = :id will be changed into WHERE id = $1
- * WHERE id = 1 will be changed into WHERE id = $1.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_normalize(string $sql) : ?string
-{
-    return (new Parser())->normalize($sql);
-}
-
-/**
- * Normalize utility SQL statements (DDL like CREATE, ALTER, DROP).
- * This handles DDL statements differently from pg_normalize() which is optimized for DML.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_normalize_utility(string $sql) : ?string
-{
-    return (new Parser())->normalizeUtility($sql);
-}
-
-/**
- * Split string with multiple SQL statements into array of individual statements.
- *
- * @return array<string>
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_split(string $sql) : array
-{
-    return (new Parser())->split($sql);
-}
-
-/**
- * Create DeparseOptions for configuring SQL formatting.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_deparse_options() : DeparseOptions
-{
-    return DeparseOptions::new();
-}
-
-/**
- * Convert a ParsedQuery AST back to SQL string.
- *
- * When called without options, returns the SQL as a simple string.
- * When called with DeparseOptions, applies formatting (pretty-printing, indentation, etc.).
- *
- * @throws \RuntimeException if deparsing fails
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_deparse(ParsedQuery $query, ?DeparseOptions $options = null) : string
-{
-    return $query->deparse($options);
-}
-
-/**
- * Parse and format SQL query with pretty printing.
- *
- * This is a convenience function that parses SQL and returns it formatted.
- *
- * @param string $sql The SQL query to format
- * @param null|DeparseOptions $options Formatting options (defaults to pretty-print enabled)
- *
- * @throws \RuntimeException if parsing or deparsing fails
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_format(string $sql, ?DeparseOptions $options = null) : string
-{
-    return (new Parser())->parse($sql)->deparse($options ?? DeparseOptions::new());
-}
-
-/**
- * Generate a summary of parsed queries in protobuf format.
- * Useful for query monitoring and logging without full AST overhead.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_summary(string $sql, int $options = 0, int $truncateLimit = 0) : string
-{
-    return (new Parser())->summary($sql, $options, $truncateLimit);
-}
-
-/**
- * Transform a SQL query into a paginated query with LIMIT and OFFSET.
- *
- * @param string $sql The SQL query to paginate
- * @param int $limit Maximum number of rows to return
- * @param int $offset Number of rows to skip (requires ORDER BY in query)
- *
- * @return string The paginated SQL query
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_to_paginated_query(string $sql, int $limit, int $offset = 0) : string
-{
-    $query = (new Parser())->parse($sql);
-    $query->traverse(new PaginationModifier(new PaginationConfig($limit, $offset)));
-
-    return $query->deparse();
-}
-
-/**
- * Transform a SQL query to limit results to a specific number of rows.
- *
- * @param string $sql The SQL query to limit
- * @param int $limit Maximum number of rows to return
- *
- * @return string The limited SQL query
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_to_limited_query(string $sql, int $limit) : string
-{
-    $query = (new Parser())->parse($sql);
-    $query->traverse(new PaginationModifier(new PaginationConfig($limit)));
-
-    return $query->deparse();
-}
-
-/**
- * Transform a SQL query into a COUNT query for pagination.
- *
- * Wraps the query in: SELECT COUNT(*) FROM (...) AS _count_subq
- * Removes ORDER BY and LIMIT/OFFSET from the inner query.
- *
- * @param string $sql The SQL query to transform
- *
- * @return string The COUNT query
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_to_count_query(string $sql) : string
-{
-    $query = (new Parser())->parse($sql);
-    $query->traverse(new CountModifier());
-
-    return $query->deparse();
-}
-
-/**
- * Transform a SQL query into a keyset (cursor-based) paginated query.
- *
- * More efficient than OFFSET for large datasets - uses indexed WHERE conditions.
- * Automatically detects existing query parameters and appends keyset placeholders at the end.
- *
- * @param string $sql The SQL query to paginate (must have ORDER BY)
- * @param int $limit Maximum number of rows to return
- * @param list<KeysetColumn> $columns Columns for keyset pagination (must match ORDER BY)
- * @param null|list<null|bool|float|int|string> $cursor Values from last row of previous page (null for first page)
- *
- * @return string The paginated SQL query
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_to_keyset_query(string $sql, int $limit, array $columns, ?array $cursor = null) : string
-{
-    $query = (new Parser())->parse($sql);
-    $query->traverse(new KeysetPaginationModifier(new KeysetPaginationConfig($limit, $columns, $cursor)));
-
-    return $query->deparse();
-}
-
-/**
- * Create a KeysetColumn for keyset pagination.
- *
- * @param string $column Column name (can include table alias like "u.id")
- * @param SortOrder $order Sort order (ASC or DESC)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_keyset_column(string $column, SortOrder $order = SortOrder::ASC) : KeysetColumn
-{
-    return new KeysetColumn($column, $order);
-}
-
-/**
- * Extract columns from a parsed SQL query.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_query_columns(ParsedQuery $query) : Columns
-{
-    return new Columns($query);
-}
-
-/**
- * Extract tables from a parsed SQL query.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_query_tables(ParsedQuery $query) : Tables
-{
-    return new Tables($query);
-}
-
-/**
- * Extract functions from a parsed SQL query.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_query_functions(ParsedQuery $query) : Functions
-{
-    return new Functions($query);
-}
-
-/**
- * Extract ORDER BY clauses from a parsed SQL query.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_query_order_by(ParsedQuery $query) : OrderByExtractor
-{
-    return new OrderByExtractor($query);
-}
-
-/**
- * Get the maximum nesting depth of a SQL query.
- *
- * Example:
- * - "SELECT * FROM t" => 1
- * - "SELECT * FROM (SELECT * FROM t)" => 2
- * - "SELECT * FROM (SELECT * FROM (SELECT * FROM t))" => 3
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_query_depth(string $sql) : int
-{
-    return (new QueryDepth(sql_parse($sql)))->depth();
-}
-
-/**
- * Transform a SQL query into an EXPLAIN query.
- *
- * Returns the modified SQL with EXPLAIN wrapped around it.
- * Defaults to EXPLAIN ANALYZE with JSON format for easy parsing.
- *
- * @param string $sql The SQL query to explain
- * @param null|ExplainConfig $config EXPLAIN configuration (defaults to forAnalysis())
- *
- * @return string The EXPLAIN query
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_to_explain(string $sql, ?ExplainConfig $config = null) : string
-{
-    $config ??= ExplainConfig::forAnalysis();
-    $query = (new Parser())->parse($sql);
-    $query->traverse(new ExplainModifier($config));
-
-    return $query->deparse();
-}
-
-/**
- * Create an ExplainConfig for customizing EXPLAIN options.
- *
- * @param bool $analyze Whether to actually execute the query (ANALYZE)
- * @param bool $verbose Include verbose output
- * @param bool $costs Include cost estimates (default true)
- * @param bool $buffers Include buffer usage statistics (requires analyze)
- * @param bool $timing Include timing information (requires analyze)
- * @param ExplainFormat $format Output format (JSON recommended for parsing)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_explain_config(
-    bool $analyze = true,
-    bool $verbose = false,
-    bool $costs = true,
-    bool $buffers = true,
-    bool $timing = true,
-    ExplainFormat $format = ExplainFormat::JSON,
-) : ExplainConfig {
-    return new ExplainConfig(
-        analyze: $analyze,
-        verbose: $verbose,
-        costs: $costs,
-        buffers: $buffers,
-        timing: $timing,
-        format: $format,
-    );
-}
-
-/**
- * Create an ExplainModifier for transforming queries into EXPLAIN queries.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_explain_modifier(ExplainConfig $config) : ExplainModifier
-{
-    return new ExplainModifier($config);
-}
-
-/**
- * Parse EXPLAIN JSON output into a Plan object.
- *
- * @param string $jsonOutput The JSON output from EXPLAIN (FORMAT JSON)
- *
- * @return Plan The parsed execution plan
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_explain_parse(string $jsonOutput) : Plan
-{
-    return (new ExplainParser())->parse($jsonOutput);
-}
-
-/**
- * Create a plan analyzer for analyzing EXPLAIN plans.
- *
- * @param Plan $plan The execution plan to analyze
- *
- * @return PlanAnalyzer The analyzer for extracting insights
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sql_analyze(Plan $plan) : PlanAnalyzer
-{
-    return new PlanAnalyzer($plan);
-}
-
-/**
- * Create a new SELECT query builder.
- *
- * @param Expression ...$expressions Columns to select. If empty, returns SelectSelectStep.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function select(Expression ...$expressions) : SelectBuilder
-{
-    if ($expressions === []) {
-        return SelectBuilder::create();
-    }
-
-    return SelectBuilder::create()->select(...$expressions);
-}
-
-/**
- * Create a WITH clause builder for CTEs.
- *
- * Example: with(cte('users', $subquery))->select(star())->from(table('users'))
- * Example: with(cte('a', $q1), cte('b', $q2))->recursive()->select(...)->from(table('a'))
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function with(CTE ...$ctes) : WithBuilder
-{
-    if ($ctes === []) {
-        throw new \InvalidArgumentException('At least one CTE is required');
-    }
-
-    return new WithBuilder(new WithClause($ctes));
-}
-
-/**
- * Create a new INSERT query builder.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function insert() : InsertIntoStep
-{
-    return InsertBuilder::create();
-}
-
-/**
- * Create an optimized bulk INSERT query for high-performance multi-row inserts.
- *
- * Unlike insert() which uses immutable builder patterns (O(n²) for n rows),
- * this function generates SQL directly using string operations (O(n) complexity).
- *
- * @param string $table Table name
- * @param list<string> $columns Column names
- * @param int $rowCount Number of rows to insert
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function bulk_insert(string $table, array $columns, int $rowCount) : BulkInsert
-{
-    return BulkInsert::into($table, $columns, $rowCount);
-}
-
-/**
- * Create a new UPDATE query builder.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function update() : UpdateTableStep
-{
-    return UpdateBuilder::create();
-}
-
-/**
- * Create a new DELETE query builder.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function delete() : DeleteFromStep
-{
-    return DeleteBuilder::create();
-}
-
-/**
- * Create a new MERGE query builder.
- *
- * @param string $table Target table name
- * @param null|string $alias Optional table alias
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function merge(string $table, ?string $alias = null) : MergeUsingStep
-{
-    return MergeBuilder::create()->into($table, $alias);
-}
-
-/**
- * Create a new COPY query builder for data import/export.
- *
- * Usage:
- *   copy()->from('users')->file('/tmp/users.csv')->format(CopyFormat::CSV)
- *   copy()->to('users')->file('/tmp/users.csv')->format(CopyFormat::CSV)
- *   copy()->toQuery(select(...))->file('/tmp/data.csv')
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function copy() : CopyFactory
-{
-    return new CopyFactory();
-}
-
-/**
- * Create a column reference expression.
- *
- * Can be used in two modes:
- * - Parse mode: col('users.id') or col('schema.table.column') - parses dot-separated string
- * - Explicit mode: col('id', 'users') or col('id', 'users', 'schema') - separate arguments
- *
- * When $table or $schema is provided, $column must be a plain column name (no dots).
- *
- * @param string $column Column name, or dot-separated path like "table.column" or "schema.table.column"
- * @param null|string $table Table name (optional, triggers explicit mode)
- * @param null|string $schema Schema name (optional, requires $table)
- *
- * @throws InvalidExpressionException when $schema is provided without $table, or when $column contains dots in explicit mode
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function col(string $column, ?string $table = null, ?string $schema = null) : Column
-{
-    if ($table !== null || $schema !== null) {
-        if ($schema !== null && $table === null) {
-            throw new InvalidExpressionException('Cannot specify schema without table in col()');
-        }
-
-        if (\str_contains($column, '.')) {
-            throw new InvalidExpressionException('Column name cannot contain dots when table or schema is specified. Use col("table.column") or col("column", "table") but not both.');
-        }
-
-        if ($schema !== null && $table !== null) {
-            return Column::schemaTableColumn($schema, $table, $column);
-        }
-
-        if ($table === null) {
-            return Column::fromParts(QualifiedIdentifier::parse($column)->parts());
-        }
-
-        return Column::tableColumn($table, $column);
-    }
-
-    return Column::fromParts(QualifiedIdentifier::parse($column)->parts());
-}
-
-/**
- * Create a SELECT * expression.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function star(?string $table = null) : Star
-{
-    return $table !== null ? Star::fromTable($table) : Star::all();
-}
-
-/**
- * Create a literal value for use in queries.
- *
- * Automatically detects the type and creates the appropriate literal:
- * - literal('hello') creates a string literal
- * - literal(42) creates an integer literal
- * - literal(3.14) creates a float literal
- * - literal(true) creates a boolean literal
- * - literal(null) creates a NULL literal
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function literal(string|int|float|bool|null $value) : Literal
-{
-    return match (true) {
-        $value === null => Literal::null(),
-        \is_string($value) => Literal::string($value),
-        \is_int($value) => Literal::int($value),
-        \is_float($value) => Literal::float($value),
-        \is_bool($value) => Literal::bool($value),
-    };
-}
-
-/**
- * Create a positional parameter ($1, $2, etc.).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function param(int $position) : Parameter
-{
-    return Parameter::positional($position);
-}
-
-/**
- * Create a function call expression.
- *
- * @param string $name Function name (can include schema like "pg_catalog.now")
- * @param list<Expression> $args Function arguments
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function func(string $name, array $args = []) : FunctionCall
-{
-    return new FunctionCall(QualifiedIdentifier::parse($name)->parts(), $args);
-}
-
-/**
- * Create an aggregate function call (COUNT, SUM, AVG, etc.).
- *
- * @param string $name Aggregate function name
- * @param list<Expression> $args Function arguments
- * @param bool $distinct Use DISTINCT modifier
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function agg(string $name, array $args = [], bool $distinct = false) : AggregateCall
-{
-    return new AggregateCall([$name], $args, false, $distinct);
-}
-
-/**
- * Create COUNT(*) aggregate.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function agg_count(?Expression $expr = null, bool $distinct = false) : AggregateCall
-{
-    if ($expr === null) {
-        return new AggregateCall(['count'], [], true, false);
-    }
-
-    return new AggregateCall(['count'], [$expr], false, $distinct);
-}
-
-/**
- * Create SUM aggregate.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function agg_sum(Expression $expr, bool $distinct = false) : AggregateCall
-{
-    return new AggregateCall(['sum'], [$expr], false, $distinct);
-}
-
-/**
- * Create AVG aggregate.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function agg_avg(Expression $expr, bool $distinct = false) : AggregateCall
-{
-    return new AggregateCall(['avg'], [$expr], false, $distinct);
-}
-
-/**
- * Create MIN aggregate.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function agg_min(Expression $expr) : AggregateCall
-{
-    return new AggregateCall(['min'], [$expr]);
-}
-
-/**
- * Create MAX aggregate.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function agg_max(Expression $expr) : AggregateCall
-{
-    return new AggregateCall(['max'], [$expr]);
-}
-
-/**
- * Create a COALESCE expression.
- *
- * @param Expression ...$expressions Expressions to coalesce
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function coalesce(Expression ...$expressions) : Coalesce
-{
-    return new Coalesce(\array_values($expressions));
-}
-
-/**
- * Create a NULLIF expression.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function nullif(Expression $expr1, Expression $expr2) : NullIf
-{
-    return new NullIf($expr1, $expr2);
-}
-
-/**
- * Create a GREATEST expression.
- *
- * @param Expression ...$expressions Expressions to compare
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function greatest(Expression ...$expressions) : Greatest
-{
-    return new Greatest(\array_values($expressions));
-}
-
-/**
- * Create a LEAST expression.
- *
- * @param Expression ...$expressions Expressions to compare
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function least(Expression ...$expressions) : Least
-{
-    return new Least(\array_values($expressions));
-}
-
-/**
- * Create a type cast expression.
- *
- * @param Expression $expr Expression to cast
- * @param DataType $dataType Target data type (use data_type_* functions)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function cast(Expression $expr, DataType $dataType) : TypeCast
-{
-    return new TypeCast($expr, $dataType);
-}
-
-/**
- * Create an integer data type (PostgreSQL int4).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_integer() : DataType
-{
-    return DataType::integer();
-}
-
-/**
- * Create a smallint data type (PostgreSQL int2).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_smallint() : DataType
-{
-    return DataType::smallint();
-}
-
-/**
- * Create a bigint data type (PostgreSQL int8).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_bigint() : DataType
-{
-    return DataType::bigint();
-}
-
-/**
- * Create a boolean data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_boolean() : DataType
-{
-    return DataType::boolean();
-}
-
-/**
- * Create a text data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_text() : DataType
-{
-    return DataType::text();
-}
-
-/**
- * Create a varchar data type with length constraint.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_varchar(int $length) : DataType
-{
-    return DataType::varchar($length);
-}
-
-/**
- * Create a char data type with length constraint.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_char(int $length) : DataType
-{
-    return DataType::char($length);
-}
-
-/**
- * Create a numeric data type with optional precision and scale.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_numeric(?int $precision = null, ?int $scale = null) : DataType
-{
-    return DataType::numeric($precision, $scale);
-}
-
-/**
- * Create a decimal data type with optional precision and scale.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_decimal(?int $precision = null, ?int $scale = null) : DataType
-{
-    return DataType::decimal($precision, $scale);
-}
-
-/**
- * Create a real data type (PostgreSQL float4).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_real() : DataType
-{
-    return DataType::real();
-}
-
-/**
- * Create a double precision data type (PostgreSQL float8).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_double_precision() : DataType
-{
-    return DataType::doublePrecision();
-}
-
-/**
- * Create a date data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_date() : DataType
-{
-    return DataType::date();
-}
-
-/**
- * Create a time data type with optional precision.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_time(?int $precision = null) : DataType
-{
-    return DataType::time($precision);
-}
-
-/**
- * Create a timestamp data type with optional precision.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_timestamp(?int $precision = null) : DataType
-{
-    return DataType::timestamp($precision);
-}
-
-/**
- * Create a timestamp with time zone data type with optional precision.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_timestamptz(?int $precision = null) : DataType
-{
-    return DataType::timestamptz($precision);
-}
-
-/**
- * Create an interval data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_interval() : DataType
-{
-    return DataType::interval();
-}
-
-/**
- * SQL standard CURRENT_TIMESTAMP function.
- *
- * Returns the current date and time (at the start of the transaction).
- * Useful as a column default value or in SELECT queries.
- *
- * Example: column('created_at', data_type_timestamp())->default(current_timestamp())
- * Example: select()->select(current_timestamp()->as('now'))
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function current_timestamp() : SQLValueFunctionExpression
-{
-    return SQLValueFunctionExpression::currentTimestamp();
-}
-
-/**
- * SQL standard CURRENT_DATE function.
- *
- * Returns the current date (at the start of the transaction).
- * Useful as a column default value or in SELECT queries.
- *
- * Example: column('birth_date', data_type_date())->default(current_date())
- * Example: select()->select(current_date()->as('today'))
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function current_date() : SQLValueFunctionExpression
-{
-    return SQLValueFunctionExpression::currentDate();
-}
-
-/**
- * SQL standard CURRENT_TIME function.
- *
- * Returns the current time (at the start of the transaction).
- * Useful as a column default value or in SELECT queries.
- *
- * Example: column('start_time', data_type_time())->default(current_time())
- * Example: select()->select(current_time()->as('now_time'))
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function current_time() : SQLValueFunctionExpression
-{
-    return SQLValueFunctionExpression::currentTime();
-}
-
-/**
- * Create a UUID data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_uuid() : DataType
-{
-    return DataType::uuid();
-}
-
-/**
- * Create a JSON data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_json() : DataType
-{
-    return DataType::json();
-}
-
-/**
- * Create a JSONB data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_jsonb() : DataType
-{
-    return DataType::jsonb();
-}
-
-/**
- * Create a bytea data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_bytea() : DataType
-{
-    return DataType::bytea();
-}
-
-/**
- * Create an inet data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_inet() : DataType
-{
-    return DataType::inet();
-}
-
-/**
- * Create a cidr data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_cidr() : DataType
-{
-    return DataType::cidr();
-}
-
-/**
- * Create a macaddr data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_macaddr() : DataType
-{
-    return DataType::macaddr();
-}
-
-/**
- * Create a serial data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_serial() : DataType
-{
-    return DataType::serial();
-}
-
-/**
- * Create a smallserial data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_smallserial() : DataType
-{
-    return DataType::smallserial();
-}
-
-/**
- * Create a bigserial data type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_bigserial() : DataType
-{
-    return DataType::bigserial();
-}
-
-/**
- * Create an array data type from an element type.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_array(DataType $elementType) : DataType
-{
-    return DataType::array($elementType);
-}
-
-/**
- * Create a custom data type.
- *
- * @param string $typeName Type name
- * @param null|string $schema Optional schema name
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function data_type_custom(string $typeName, ?string $schema = null) : DataType
-{
-    return DataType::custom($typeName, $schema);
-}
-
-/**
- * Create a CASE expression.
- *
- * @param non-empty-list<WhenClause> $whenClauses WHEN clauses
- * @param null|Expression $elseResult ELSE result (optional)
- * @param null|Expression $operand CASE operand for simple CASE (optional)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function case_when(array $whenClauses, ?Expression $elseResult = null, ?Expression $operand = null) : CaseExpression
-{
-    return new CaseExpression($operand, \array_values($whenClauses), $elseResult);
-}
-
-/**
- * Create a WHEN clause for CASE expression.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function when(Expression $condition, Expression $result) : WhenClause
-{
-    return new WhenClause($condition, $result);
-}
-
-/**
- * Create a subquery expression.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function sub_select(SelectFinalStep $query) : Subquery
-{
-    $node = new Node();
-    $node->setSelectStmt($query->toAst());
-
-    return new Subquery($node);
-}
-
-/**
- * Create an array expression.
- *
- * @param list<Expression> $elements Array elements
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function array_expr(array $elements) : ArrayExpression
-{
-    return new ArrayExpression(\array_values($elements));
-}
-
-/**
- * Create a row expression.
- *
- * @param list<Expression> $elements Row elements
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function row_expr(array $elements) : RowExpression
-{
-    return new RowExpression(\array_values($elements));
-}
-
-/**
- * Create a raw SQL expression (use with caution).
- *
- * SECURITY WARNING: This function accepts raw SQL without parameterization.
- * SQL injection is possible if used with untrusted user input.
- * Only use with trusted, validated input.
- *
- * For user-provided values, use param() instead:
- * ```php
- * // UNSAFE - SQL injection possible:
- * raw_expr("custom_func('" . $userInput . "')")
- *
- * // SAFE - use parameters:
- * func('custom_func', param(1))
- * ```
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function raw_expr(string $sql) : RawExpression
-{
-    return new RawExpression($sql);
-}
-
-/**
- * Create a binary expression (left op right).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function binary_expr(Expression $left, string $operator, Expression $right) : BinaryExpression
-{
-    return new BinaryExpression($left, $operator, $right);
-}
-
-/**
- * Create a window function.
- *
- * @param string $name Function name
- * @param list<Expression> $args Function arguments
- * @param list<Expression> $partitionBy PARTITION BY expressions
- * @param list<OrderBy> $orderBy ORDER BY items
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function window_func(
-    string $name,
-    array $args = [],
-    array $partitionBy = [],
-    array $orderBy = [],
-) : WindowFunction {
-    return new WindowFunction([$name], \array_values($args), \array_values($partitionBy), \array_values($orderBy));
-}
-
-/**
- * Create an equality comparison (column = value).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function eq(Expression $left, Expression $right) : Comparison
-{
-    return new Comparison($left, ComparisonOperator::EQ, $right);
-}
-
-/**
- * Create a not-equal comparison (column != value).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function neq(Expression $left, Expression $right) : Comparison
-{
-    return new Comparison($left, ComparisonOperator::NEQ, $right);
-}
-
-/**
- * Create a less-than comparison (column < value).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function lt(Expression $left, Expression $right) : Comparison
-{
-    return new Comparison($left, ComparisonOperator::LT, $right);
-}
-
-/**
- * Create a less-than-or-equal comparison (column <= value).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function lte(Expression $left, Expression $right) : Comparison
-{
-    return new Comparison($left, ComparisonOperator::LTE, $right);
-}
-
-/**
- * Create a greater-than comparison (column > value).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function gt(Expression $left, Expression $right) : Comparison
-{
-    return new Comparison($left, ComparisonOperator::GT, $right);
-}
-
-/**
- * Create a greater-than-or-equal comparison (column >= value).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function gte(Expression $left, Expression $right) : Comparison
-{
-    return new Comparison($left, ComparisonOperator::GTE, $right);
-}
-
-/**
- * Create a BETWEEN condition.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function between(Expression $expr, Expression $low, Expression $high, bool $not = false) : Between
-{
-    return new Between($expr, $low, $high, $not);
-}
-
-/**
- * Create an IN condition.
- *
- * @param Expression $expr Expression to check
- * @param list<Expression> $values List of values
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function is_in(Expression $expr, array $values) : In
-{
-    return new In($expr, \array_values($values));
-}
-
-/**
- * Create an IS NULL condition.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function is_null(Expression $expr, bool $not = false) : IsNull
-{
-    return new IsNull($expr, $not);
-}
-
-/**
- * Create a LIKE condition.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function like(Expression $expr, Expression $pattern, bool $caseInsensitive = false) : Like
-{
-    return new Like($expr, $pattern, $caseInsensitive);
-}
-
-/**
- * Create a SIMILAR TO condition.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function similar_to(Expression $expr, Expression $pattern) : SimilarTo
-{
-    return new SimilarTo($expr, $pattern);
-}
-
-/**
- * Create an IS DISTINCT FROM condition.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function is_distinct_from(Expression $left, Expression $right, bool $not = false) : IsDistinctFrom
-{
-    return new IsDistinctFrom($left, $right, $not);
-}
-
-/**
- * Create an EXISTS condition.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function exists(SelectFinalStep $subquery) : Exists
-{
-    $node = new Node();
-    $node->setSelectStmt($subquery->toAst());
-
-    return new Exists($node);
-}
-
-/**
- * Create an ANY condition.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function any_sub_select(Expression $left, ComparisonOperator $operator, SelectFinalStep $subquery) : Any
-{
-    $node = new Node();
-    $node->setSelectStmt($subquery->toAst());
-
-    return new Any($left, $operator, $node);
-}
-
-/**
- * Create an ALL condition.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function all_sub_select(Expression $left, ComparisonOperator $operator, SelectFinalStep $subquery) : All
-{
-    $node = new Node();
-    $node->setSelectStmt($subquery->toAst());
-
-    return new All($left, $operator, $node);
-}
-
-/**
- * Create a condition builder for fluent condition composition.
- *
- * This builder allows incremental condition building with a fluent API:
- *
- * ```php
- * $builder = conditions();
- *
- * if ($hasFilter) {
- *     $builder = $builder->and(eq(col('status'), literal('active')));
- * }
- *
- * if (!$builder->isEmpty()) {
- *     $query = select()->from(table('users'))->where($builder);
- * }
- * ```
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function conditions() : ConditionBuilder
-{
-    return ConditionBuilder::create();
-}
-
-/**
- * Combine conditions with AND.
- *
- * @param Condition ...$conditions Conditions to combine
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function cond_and(Condition ...$conditions) : AndCondition
-{
-    return new AndCondition(...$conditions);
-}
-
-/**
- * Combine conditions with OR.
- *
- * @param Condition ...$conditions Conditions to combine
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function cond_or(Condition ...$conditions) : OrCondition
-{
-    return new OrCondition(...$conditions);
-}
-
-/**
- * Negate a condition with NOT.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function cond_not(Condition $condition) : NotCondition
-{
-    return new NotCondition($condition);
-}
-
-/**
- * Create a raw SQL condition (use with caution).
- *
- * SECURITY WARNING: This function accepts raw SQL without parameterization.
- * SQL injection is possible if used with untrusted user input.
- * Only use with trusted, validated input.
- *
- * For user-provided values, use standard condition functions with param():
- * ```php
- * // UNSAFE - SQL injection possible:
- * raw_cond("status = '" . $userInput . "'")
- *
- * // SAFE - use typed conditions:
- * eq(col('status'), param(1))
- * ```
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function raw_cond(string $sql) : RawCondition
-{
-    return new RawCondition($sql);
-}
-
-/**
- * Create a TRUE condition for WHERE clauses.
- *
- * Useful when you need a condition that always evaluates to true.
- *
- * Example: select(literal(1))->where(cond_true()) // SELECT 1 WHERE true
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function cond_true() : RawCondition
-{
-    return new RawCondition('true');
-}
-
-/**
- * Create a FALSE condition for WHERE clauses.
- *
- * Useful when you need a condition that always evaluates to false,
- * typically for testing or to return an empty result set.
- *
- * Example: select(literal(1))->where(cond_false()) // SELECT 1 WHERE false
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function cond_false() : RawCondition
-{
-    return new RawCondition('false');
-}
-
-/**
- * Create a JSONB contains condition (@>).
- *
- * Example: json_contains(col('metadata'), literal_json('{"category": "electronics"}'))
- * Produces: metadata @> '{"category": "electronics"}'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function json_contains(Expression $left, Expression $right) : OperatorCondition
-{
-    return new OperatorCondition($left, '@>', $right);
-}
-
-/**
- * Create a JSONB is contained by condition (<@).
- *
- * Example: json_contained_by(col('metadata'), literal_json('{"category": "electronics", "price": 100}'))
- * Produces: metadata <@ '{"category": "electronics", "price": 100}'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function json_contained_by(Expression $left, Expression $right) : OperatorCondition
-{
-    return new OperatorCondition($left, '<@', $right);
-}
-
-/**
- * Create a JSON field access expression (->).
- * Returns JSON.
- *
- * Example: json_get(col('metadata'), literal_string('category'))
- * Produces: metadata -> 'category'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function json_get(Expression $expr, Expression $key) : BinaryExpression
-{
-    return new BinaryExpression($expr, '->', $key);
-}
-
-/**
- * Create a JSON field access expression (->>).
- * Returns text.
- *
- * Example: json_get_text(col('metadata'), literal_string('name'))
- * Produces: metadata ->> 'name'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function json_get_text(Expression $expr, Expression $key) : BinaryExpression
-{
-    return new BinaryExpression($expr, '->>', $key);
-}
-
-/**
- * Create a JSON path access expression (#>).
- * Returns JSON.
- *
- * Example: json_path(col('metadata'), literal_string('{category,name}'))
- * Produces: metadata #> '{category,name}'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function json_path(Expression $expr, Expression $path) : BinaryExpression
-{
-    return new BinaryExpression($expr, '#>', $path);
-}
-
-/**
- * Create a JSON path access expression (#>>).
- * Returns text.
- *
- * Example: json_path_text(col('metadata'), literal_string('{category,name}'))
- * Produces: metadata #>> '{category,name}'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function json_path_text(Expression $expr, Expression $path) : BinaryExpression
-{
-    return new BinaryExpression($expr, '#>>', $path);
-}
-
-/**
- * Create a JSONB key exists condition (?).
- *
- * Example: json_exists(col('metadata'), literal_string('category'))
- * Produces: metadata ? 'category'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function json_exists(Expression $expr, Expression $key) : OperatorCondition
-{
-    return new OperatorCondition($expr, '?', $key);
-}
-
-/**
- * Create a JSONB any key exists condition (?|).
- *
- * Example: json_exists_any(col('metadata'), raw_expr("array['category', 'name']"))
- * Produces: metadata ?| array['category', 'name']
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function json_exists_any(Expression $expr, Expression $keys) : OperatorCondition
-{
-    return new OperatorCondition($expr, '?|', $keys);
-}
-
-/**
- * Create a JSONB all keys exist condition (?&).
- *
- * Example: json_exists_all(col('metadata'), raw_expr("array['category', 'name']"))
- * Produces: metadata ?& array['category', 'name']
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function json_exists_all(Expression $expr, Expression $keys) : OperatorCondition
-{
-    return new OperatorCondition($expr, '?&', $keys);
-}
-
-/**
- * Create an array contains condition (@>).
- *
- * Example: array_contains(col('tags'), raw_expr("ARRAY['sale']"))
- * Produces: tags @> ARRAY['sale']
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function array_contains(Expression $left, Expression $right) : OperatorCondition
-{
-    return new OperatorCondition($left, '@>', $right);
-}
-
-/**
- * Create an array is contained by condition (<@).
- *
- * Example: array_contained_by(col('tags'), raw_expr("ARRAY['sale', 'featured', 'new']"))
- * Produces: tags <@ ARRAY['sale', 'featured', 'new']
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function array_contained_by(Expression $left, Expression $right) : OperatorCondition
-{
-    return new OperatorCondition($left, '<@', $right);
-}
-
-/**
- * Create an array overlap condition (&&).
- *
- * Example: array_overlap(col('tags'), raw_expr("ARRAY['sale', 'featured']"))
- * Produces: tags && ARRAY['sale', 'featured']
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function array_overlap(Expression $left, Expression $right) : OperatorCondition
-{
-    return new OperatorCondition($left, '&&', $right);
-}
-
-/**
- * Create a POSIX regex match condition (~).
- * Case-sensitive.
- *
- * Example: regex_match(col('email'), literal_string('.*@gmail\\.com'))
- *
- * Produces: email ~ '.*@gmail\.com'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function regex_match(Expression $expr, Expression $pattern) : OperatorCondition
-{
-    return new OperatorCondition($expr, '~', $pattern);
-}
-
-/**
- * Create a POSIX regex match condition (~*).
- * Case-insensitive.
- *
- * Example: regex_imatch(col('email'), literal_string('.*@gmail\\.com'))
- *
- * Produces: email ~* '.*@gmail\.com'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function regex_imatch(Expression $expr, Expression $pattern) : OperatorCondition
-{
-    return new OperatorCondition($expr, '~*', $pattern);
-}
-
-/**
- * Create a POSIX regex not match condition (!~).
- * Case-sensitive.
- *
- * Example: not_regex_match(col('email'), literal_string('.*@spam\\.com'))
- *
- * Produces: email !~ '.*@spam\.com'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function not_regex_match(Expression $expr, Expression $pattern) : OperatorCondition
-{
-    return new OperatorCondition($expr, '!~', $pattern);
-}
-
-/**
- * Create a POSIX regex not match condition (!~*).
- * Case-insensitive.
- *
- * Example: not_regex_imatch(col('email'), literal_string('.*@spam\\.com'))
- *
- * Produces: email !~* '.*@spam\.com'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function not_regex_imatch(Expression $expr, Expression $pattern) : OperatorCondition
-{
-    return new OperatorCondition($expr, '!~*', $pattern);
-}
-
-/**
- * Create a full-text search match condition (@@).
- *
- * Example: text_search_match(col('document'), raw_expr("to_tsquery('english', 'hello & world')"))
- * Produces: document @@ to_tsquery('english', 'hello & world')
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function text_search_match(Expression $document, Expression $query) : OperatorCondition
-{
-    return new OperatorCondition($document, '@@', $query);
-}
-
-/**
- * Create a table reference.
- *
- * Supports dot notation for schema-qualified names: "public.users" or explicit schema parameter.
- * Double-quoted identifiers preserve dots: '"my.table"' creates a single identifier.
- *
- * @param string $name Table name (may include schema as "schema.table")
- * @param null|string $schema Schema name (optional, overrides parsed schema)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function table(string $name, ?string $schema = null) : Table
-{
-    if ($schema !== null) {
-        return new Table($name, $schema);
-    }
-
-    $identifier = QualifiedIdentifier::parse($name);
-
-    return new Table($identifier->name(), $identifier->schema());
-}
-
-/**
- * Create a derived table (subquery in FROM clause).
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function derived(SelectFinalStep $query, string $alias) : DerivedTable
-{
-    $node = new Node();
-    $node->setSelectStmt($query->toAst());
-
-    return new DerivedTable($node, $alias);
-}
-
-/**
- * Create a LATERAL subquery.
- *
- * @param TableReference $reference The subquery or table function reference
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function lateral(TableReference $reference) : Lateral
-{
-    return new Lateral($reference);
-}
-
-/**
- * Create a table function reference.
- *
- * @param FunctionCall $function The table-valued function
- * @param bool $withOrdinality Whether to add WITH ORDINALITY
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function table_func(FunctionCall $function, bool $withOrdinality = false) : TableFunction
-{
-    return new TableFunction($function, $withOrdinality);
-}
-
-/**
- * Create a VALUES clause as a table reference.
- *
- * Usage:
- *   select()->from(
- *       values_table(
- *           row_expr([literal(1), literal('Alice')]),
- *           row_expr([literal(2), literal('Bob')])
- *       )->as('t', ['id', 'name'])
- *   )
- *
- * Generates: SELECT * FROM (VALUES (1, 'Alice'), (2, 'Bob')) AS t(id, name)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function values_table(RowExpression ...$rows) : ValuesTable
-{
-    return new ValuesTable($rows);
-}
-
-/**
- * Create an ORDER BY item.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function order_by(
-    Expression $expr,
-    SortDirection $direction = SortDirection::ASC,
-    NullsPosition $nulls = NullsPosition::DEFAULT,
-) : OrderBy {
-    return new OrderBy($expr, $direction, $nulls);
-}
-
-/**
- * Create an ORDER BY item with ASC direction.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function asc(Expression $expr, NullsPosition $nulls = NullsPosition::DEFAULT) : OrderBy
-{
-    return new OrderBy($expr, SortDirection::ASC, $nulls);
-}
-
-/**
- * Create an ORDER BY item with DESC direction.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function desc(Expression $expr, NullsPosition $nulls = NullsPosition::DEFAULT) : OrderBy
-{
-    return new OrderBy($expr, SortDirection::DESC, $nulls);
-}
-
-/**
- * Create a CTE (Common Table Expression).
- *
- * @param string $name CTE name
- * @param SelectFinalStep $query CTE query
- * @param array<string> $columnNames Column aliases (optional)
- * @param CTEMaterialization $materialization Materialization hint
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function cte(
-    string $name,
-    SelectFinalStep $query,
-    array $columnNames = [],
-    CTEMaterialization $materialization = CTEMaterialization::DEFAULT,
-    bool $recursive = false,
-) : CTE {
-    $node = new Node();
-    $node->setSelectStmt($query->toAst());
-
-    return new CTE($name, $node, $columnNames, $materialization, $recursive);
-}
-
-/**
- * Create a window definition for WINDOW clause.
- *
- * @param string $name Window name
- * @param list<Expression> $partitionBy PARTITION BY expressions
- * @param list<OrderBy> $orderBy ORDER BY items
- * @param null|WindowFrame $frame Window frame specification
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function window_def(
-    string $name,
-    array $partitionBy = [],
-    array $orderBy = [],
-    ?WindowFrame $frame = null,
-) : WindowDefinition {
-    return new WindowDefinition($name, \array_values($partitionBy), \array_values($orderBy), $frame);
-}
-
-/**
- * Create a window frame specification.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function window_frame(
-    FrameMode $mode,
-    FrameBound $start,
-    ?FrameBound $end = null,
-    FrameExclusion $exclusion = FrameExclusion::NO_OTHERS,
-) : WindowFrame {
-    return new WindowFrame($mode, $start, $end, $exclusion);
-}
-
-/**
- * Create a frame bound for CURRENT ROW.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function frame_current_row() : FrameBound
-{
-    return FrameBound::currentRow();
-}
-
-/**
- * Create a frame bound for UNBOUNDED PRECEDING.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function frame_unbounded_preceding() : FrameBound
-{
-    return FrameBound::unboundedPreceding();
-}
-
-/**
- * Create a frame bound for UNBOUNDED FOLLOWING.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function frame_unbounded_following() : FrameBound
-{
-    return FrameBound::unboundedFollowing();
-}
-
-/**
- * Create a frame bound for N PRECEDING.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function frame_preceding(Expression $offset) : FrameBound
-{
-    return FrameBound::preceding($offset);
-}
-
-/**
- * Create a frame bound for N FOLLOWING.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function frame_following(Expression $offset) : FrameBound
-{
-    return FrameBound::following($offset);
-}
-
-/**
- * Create a locking clause (FOR UPDATE, FOR SHARE, etc.).
- *
- * @param LockStrength $strength Lock strength
- * @param list<string> $tables Tables to lock (empty for all)
- * @param LockWaitPolicy $waitPolicy Wait policy
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function lock_for(
-    LockStrength $strength,
-    array $tables = [],
-    LockWaitPolicy $waitPolicy = LockWaitPolicy::DEFAULT,
-) : LockingClause {
-    return new LockingClause($strength, \array_values($tables), $waitPolicy);
-}
-
-/**
- * Create a FOR UPDATE locking clause.
- *
- * @param list<string> $tables Tables to lock (empty for all)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function for_update(array $tables = []) : LockingClause
-{
-    return LockingClause::forUpdate(\array_values($tables));
-}
-
-/**
- * Create a FOR SHARE locking clause.
- *
- * @param list<string> $tables Tables to lock (empty for all)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function for_share(array $tables = []) : LockingClause
-{
-    return LockingClause::forShare(\array_values($tables));
-}
-
-/**
- * Create an ON CONFLICT DO NOTHING clause.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function on_conflict_nothing(?ConflictTarget $target = null) : OnConflictClause
-{
-    return OnConflictClause::doNothing($target);
-}
-
-/**
- * Create an ON CONFLICT DO UPDATE clause.
- *
- * @param ConflictTarget $target Conflict target (columns or constraint)
- * @param array<string, Expression> $updates Column updates
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function on_conflict_update(ConflictTarget $target, array $updates) : OnConflictClause
-{
-    return OnConflictClause::doUpdate($target, $updates);
-}
-
-/**
- * Create a conflict target for ON CONFLICT (columns).
- *
- * @param list<string> $columns Columns that define uniqueness
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function conflict_columns(array $columns) : ConflictTarget
-{
-    return ConflictTarget::columns(\array_values($columns));
-}
-
-/**
- * Create a conflict target for ON CONFLICT ON CONSTRAINT.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function conflict_constraint(string $name) : ConflictTarget
-{
-    return ConflictTarget::constraint($name);
-}
-
-/**
- * Create a RETURNING clause.
- *
- * @param Expression ...$expressions Expressions to return
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function returning(Expression ...$expressions) : ReturningClause
-{
-    return new ReturningClause(\array_values($expressions));
-}
-
-/**
- * Create a RETURNING * clause.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function returning_all() : ReturningClause
-{
-    return ReturningClause::all();
-}
-
-/**
- * Create a BEGIN transaction builder.
- *
- * Example: begin()->isolationLevel(IsolationLevel::SERIALIZABLE)->readOnly()
- * Produces: BEGIN ISOLATION LEVEL SERIALIZABLE READ ONLY
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function begin() : BeginOptionsStep
-{
-    return BeginBuilder::create();
-}
-
-/**
- * Create a COMMIT transaction builder.
- *
- * Example: commit()->andChain()
- * Produces: COMMIT AND CHAIN
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function commit() : CommitOptionsStep
-{
-    return CommitBuilder::create();
-}
-
-/**
- * Create a ROLLBACK transaction builder.
- *
- * Example: rollback()->toSavepoint('my_savepoint')
- * Produces: ROLLBACK TO SAVEPOINT my_savepoint
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function rollback() : RollbackOptionsStep
-{
-    return RollbackBuilder::create();
-}
-
-/**
- * Create a SAVEPOINT.
- *
- * Example: savepoint('my_savepoint')
- * Produces: SAVEPOINT my_savepoint
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function savepoint(string $name) : SavepointFinalStep
-{
-    return SavepointBuilder::create($name);
-}
-
-/**
- * Release a SAVEPOINT.
- *
- * Example: release_savepoint('my_savepoint')
- * Produces: RELEASE my_savepoint
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function release_savepoint(string $name) : SavepointFinalStep
-{
-    return SavepointBuilder::release($name);
-}
-
-/**
- * Create a SET TRANSACTION builder.
- *
- * Example: set_transaction()->isolationLevel(IsolationLevel::SERIALIZABLE)->readOnly()
- * Produces: SET TRANSACTION ISOLATION LEVEL SERIALIZABLE, READ ONLY
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function set_transaction() : SetTransactionOptionsStep
-{
-    return SetTransactionBuilder::create();
-}
-
-/**
- * Create a SET SESSION CHARACTERISTICS AS TRANSACTION builder.
- *
- * Example: set_session_transaction()->isolationLevel(IsolationLevel::SERIALIZABLE)
- * Produces: SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL SERIALIZABLE
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function set_session_transaction() : SetTransactionOptionsStep
-{
-    return SetTransactionBuilder::session();
-}
-
-/**
- * Create a SET TRANSACTION SNAPSHOT builder.
- *
- * Example: transaction_snapshot('00000003-0000001A-1')
- * Produces: SET TRANSACTION SNAPSHOT '00000003-0000001A-1'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function transaction_snapshot(string $snapshotId) : SetTransactionFinalStep
-{
-    return SetTransactionBuilder::create()->snapshot($snapshotId);
-}
-
-/**
- * Create a PREPARE TRANSACTION builder.
- *
- * Example: prepare_transaction('my_transaction')
- * Produces: PREPARE TRANSACTION 'my_transaction'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function prepare_transaction(string $transactionId) : PreparedTransactionFinalStep
-{
-    return PreparedTransactionBuilder::prepare($transactionId);
-}
-
-/**
- * Create a COMMIT PREPARED builder.
- *
- * Example: commit_prepared('my_transaction')
- * Produces: COMMIT PREPARED 'my_transaction'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function commit_prepared(string $transactionId) : PreparedTransactionFinalStep
-{
-    return PreparedTransactionBuilder::commitPrepared($transactionId);
-}
-
-/**
- * Create a ROLLBACK PREPARED builder.
- *
- * Example: rollback_prepared('my_transaction')
- * Produces: ROLLBACK PREPARED 'my_transaction'
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function rollback_prepared(string $transactionId) : PreparedTransactionFinalStep
-{
-    return PreparedTransactionBuilder::rollbackPrepared($transactionId);
-}
-
-/**
- * Declare a server-side cursor for a query.
- *
- * Cursors must be declared within a transaction and provide memory-efficient
- * iteration over large result sets via FETCH commands.
- *
- * Example with query builder:
- *   declare_cursor('my_cursor', select(star())->from(table('users')))->noScroll()
- *   Produces: DECLARE my_cursor NO SCROLL CURSOR FOR SELECT * FROM users
- *
- * Example with raw SQL:
- *   declare_cursor('my_cursor', 'SELECT * FROM users WHERE active = true')->withHold()
- *   Produces: DECLARE my_cursor NO SCROLL CURSOR WITH HOLD FOR SELECT * FROM users WHERE active = true
- *
- * @param string $cursorName Unique cursor name
- * @param SelectFinalStep|SqlQuery|string $query Query to iterate over
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function declare_cursor(string $cursorName, SelectFinalStep|string|SqlQuery $query) : DeclareCursorOptionsStep
-{
-    if ($query instanceof SelectFinalStep) {
-        return DeclareCursorBuilder::create($cursorName, $query);
-    }
-
-    return DeclareCursorBuilder::createFromSql($cursorName, $query);
-}
-
-/**
- * Fetch rows from a cursor.
- *
- * Example: fetch('my_cursor')->forward(100)
- * Produces: FETCH FORWARD 100 my_cursor
- *
- * Example: fetch('my_cursor')->all()
- * Produces: FETCH ALL my_cursor
- *
- * @param string $cursorName Cursor to fetch from
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function fetch(string $cursorName) : FetchCursorBuilder
-{
-    return FetchCursorBuilder::create($cursorName);
-}
-
-/**
- * Close a cursor.
- *
- * Example: close_cursor('my_cursor')
- * Produces: CLOSE my_cursor
- *
- * Example: close_cursor() - closes all cursors
- * Produces: CLOSE ALL
- *
- * @param null|string $cursorName Cursor to close, or null to close all
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function close_cursor(?string $cursorName = null) : CloseCursorFinalStep
-{
-    if ($cursorName === null) {
-        return CloseCursorBuilder::closeAll();
-    }
-
-    return CloseCursorBuilder::close($cursorName);
-}
-
-/**
- * Create a column definition for CREATE TABLE.
- *
- * @param string $name Column name
- * @param DataType $type Column data type
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function column(string $name, DataType $type) : ColumnDefinition
-{
-    return ColumnDefinition::create($name, $type);
-}
-
-/**
- * Create a PRIMARY KEY constraint.
- *
- * @param string ...$columns Columns that form the primary key
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function primary_key(string ...$columns) : PrimaryKeyConstraint
-{
-    return PrimaryKeyConstraint::create(...$columns);
-}
-
-/**
- * Create a UNIQUE constraint.
- *
- * @param string ...$columns Columns that must be unique together
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function unique_constraint(string ...$columns) : UniqueConstraint
-{
-    return UniqueConstraint::create(...$columns);
-}
-
-/**
- * Create a FOREIGN KEY constraint.
- *
- * @param list<string> $columns Local columns
- * @param string $referenceTable Referenced table
- * @param list<string> $referenceColumns Referenced columns (defaults to same as $columns if empty)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function foreign_key(array $columns, string $referenceTable, array $referenceColumns = []) : ForeignKeyConstraint
-{
-    return ForeignKeyConstraint::create($columns, $referenceTable, $referenceColumns);
-}
-
-/**
- * Create a CHECK constraint.
- *
- * @param string $expression SQL expression that must evaluate to true
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function check_constraint(string $expression) : CheckConstraint
-{
-    return CheckConstraint::create($expression);
-}
-
-/**
- * Create a factory for building CREATE statements.
- *
- * Provides a unified entry point for all CREATE operations:
- * - create()->table() - CREATE TABLE
- * - create()->tableAs() - CREATE TABLE AS
- * - create()->index() - CREATE INDEX
- * - create()->view() - CREATE VIEW
- * - create()->materializedView() - CREATE MATERIALIZED VIEW
- * - create()->sequence() - CREATE SEQUENCE
- * - create()->schema() - CREATE SCHEMA
- * - create()->role() - CREATE ROLE
- * - create()->function() - CREATE FUNCTION
- * - create()->procedure() - CREATE PROCEDURE
- * - create()->trigger() - CREATE TRIGGER
- * - create()->rule() - CREATE RULE
- * - create()->extension() - CREATE EXTENSION
- * - create()->compositeType() - CREATE TYPE (composite)
- * - create()->enumType() - CREATE TYPE (enum)
- * - create()->rangeType() - CREATE TYPE (range)
- * - create()->domain() - CREATE DOMAIN
- *
- * Example: create()->table('users')->columns(col_def('id', data_type_serial()))
- * Example: create()->index('idx_email')->on('users')->columns('email')
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function create() : CreateFactory
-{
-    return new CreateFactory();
-}
-
-/**
- * Create a factory for building DROP statements.
- *
- * Provides a unified entry point for all DROP operations:
- * - drop()->table() - DROP TABLE
- * - drop()->index() - DROP INDEX
- * - drop()->view() - DROP VIEW
- * - drop()->materializedView() - DROP MATERIALIZED VIEW
- * - drop()->sequence() - DROP SEQUENCE
- * - drop()->schema() - DROP SCHEMA
- * - drop()->role() - DROP ROLE
- * - drop()->function() - DROP FUNCTION
- * - drop()->procedure() - DROP PROCEDURE
- * - drop()->trigger() - DROP TRIGGER
- * - drop()->rule() - DROP RULE
- * - drop()->extension() - DROP EXTENSION
- * - drop()->type() - DROP TYPE
- * - drop()->domain() - DROP DOMAIN
- * - drop()->owned() - DROP OWNED
- *
- * Example: drop()->table('users', 'orders')->ifExists()->cascade()
- * Example: drop()->index('idx_email')->ifExists()
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function drop() : DropFactory
-{
-    return new DropFactory();
-}
-
-/**
- * Create a factory for building ALTER statements.
- *
- * Provides a unified entry point for all ALTER operations:
- * - alter()->table() - ALTER TABLE
- * - alter()->index() - ALTER INDEX
- * - alter()->view() - ALTER VIEW
- * - alter()->materializedView() - ALTER MATERIALIZED VIEW
- * - alter()->sequence() - ALTER SEQUENCE
- * - alter()->schema() - ALTER SCHEMA
- * - alter()->role() - ALTER ROLE
- * - alter()->function() - ALTER FUNCTION
- * - alter()->procedure() - ALTER PROCEDURE
- * - alter()->trigger() - ALTER TRIGGER
- * - alter()->extension() - ALTER EXTENSION
- * - alter()->enumType() - ALTER TYPE (enum)
- * - alter()->domain() - ALTER DOMAIN
- *
- * Rename operations are also under alter():
- * - alter()->index('old')->renameTo('new')
- * - alter()->view('old')->renameTo('new')
- * - alter()->schema('old')->renameTo('new')
- * - alter()->role('old')->renameTo('new')
- * - alter()->trigger('old')->on('table')->renameTo('new')
- *
- * Example: alter()->table('users')->addColumn(col_def('email', data_type_text()))
- * Example: alter()->sequence('user_id_seq')->restart(1000)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function alter() : AlterFactory
-{
-    return new AlterFactory();
-}
-
-/**
- * Create a TRUNCATE TABLE builder.
- *
- * @param string ...$tables Table names to truncate
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function truncate_table(string ...$tables) : TruncateFinalStep
-{
-    return TruncateBuilder::create(...$tables);
-}
-
-/**
- * Create a REFRESH MATERIALIZED VIEW builder.
- *
- * Example: refresh_materialized_view('user_stats')
- * Produces: REFRESH MATERIALIZED VIEW user_stats
- *
- * Example: refresh_materialized_view('user_stats')->concurrently()->withData()
- * Produces: REFRESH MATERIALIZED VIEW CONCURRENTLY user_stats WITH DATA
- *
- * @param string $name View name (may include schema as "schema.view")
- * @param null|string $schema Schema name (optional, overrides parsed schema)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function refresh_materialized_view(string $name, ?string $schema = null) : RefreshMatViewOptionsStep
-{
-    return RefreshMaterializedViewBuilder::create($name, $schema);
-}
-
-/**
- * Get a CASCADE referential action.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function ref_action_cascade() : ReferentialAction
-{
-    return ReferentialAction::CASCADE;
-}
-
-/**
- * Get a RESTRICT referential action.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function ref_action_restrict() : ReferentialAction
-{
-    return ReferentialAction::RESTRICT;
-}
-
-/**
- * Get a SET NULL referential action.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function ref_action_set_null() : ReferentialAction
-{
-    return ReferentialAction::SET_NULL;
-}
-
-/**
- * Get a SET DEFAULT referential action.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function ref_action_set_default() : ReferentialAction
-{
-    return ReferentialAction::SET_DEFAULT;
-}
-
-/**
- * Get a NO ACTION referential action.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function ref_action_no_action() : ReferentialAction
-{
-    return ReferentialAction::NO_ACTION;
-}
-
-/**
- * Start building a REINDEX INDEX statement.
- *
- * Use chainable methods: ->concurrently(), ->verbose(), ->tablespace()
- *
- * Example: reindex_index('idx_users_email')->concurrently()
- *
- * @param string $name The index name (may include schema: schema.index)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function reindex_index(string $name) : ReindexFinalStep
-{
-    return ReindexBuilder::index($name);
-}
-
-/**
- * Start building a REINDEX TABLE statement.
- *
- * Use chainable methods: ->concurrently(), ->verbose(), ->tablespace()
- *
- * Example: reindex_table('users')->concurrently()
- *
- * @param string $name The table name (may include schema: schema.table)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function reindex_table(string $name) : ReindexFinalStep
-{
-    return ReindexBuilder::table($name);
-}
-
-/**
- * Start building a REINDEX SCHEMA statement.
- *
- * Use chainable methods: ->concurrently(), ->verbose(), ->tablespace()
- *
- * Example: reindex_schema('public')->concurrently()
- *
- * @param string $name The schema name
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function reindex_schema(string $name) : ReindexFinalStep
-{
-    return ReindexBuilder::schema($name);
-}
-
-/**
- * Start building a REINDEX DATABASE statement.
- *
- * Use chainable methods: ->concurrently(), ->verbose(), ->tablespace()
- *
- * Example: reindex_database('mydb')->concurrently()
- *
- * @param string $name The database name
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function reindex_database(string $name) : ReindexFinalStep
-{
-    return ReindexBuilder::database($name);
-}
-
-/**
- * Create an index column specification.
- *
- * Use chainable methods: ->asc(), ->desc(), ->nullsFirst(), ->nullsLast(), ->opclass(), ->collate()
- *
- * Example: index_col('email')->desc()->nullsLast()
- *
- * @param string $name The column name
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function index_col(string $name) : IndexColumn
-{
-    return IndexColumn::column($name);
-}
-
-/**
- * Create an index column specification from an expression.
- *
- * Use chainable methods: ->asc(), ->desc(), ->nullsFirst(), ->nullsLast(), ->opclass(), ->collate()
- *
- * Example: index_expr(fn_call('lower', col('email')))->desc()
- *
- * @param Expression $expression The expression to index
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
-function index_expr(Expression $expression) : IndexColumn
-{
-    return IndexColumn::expression($expression);
-}
-
-/**
- * Get the BTREE index method.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function index_method_btree() : IndexMethod
-{
-    return IndexMethod::BTREE;
-}
-
-/**
- * Get the HASH index method.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function index_method_hash() : IndexMethod
-{
-    return IndexMethod::HASH;
-}
-
-/**
- * Get the GIST index method.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function index_method_gist() : IndexMethod
-{
-    return IndexMethod::GIST;
-}
-
-/**
- * Get the SPGIST index method.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function index_method_spgist() : IndexMethod
-{
-    return IndexMethod::SPGIST;
-}
-
-/**
- * Get the GIN index method.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function index_method_gin() : IndexMethod
-{
-    return IndexMethod::GIN;
-}
-
-/**
- * Get the BRIN index method.
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function index_method_brin() : IndexMethod
-{
-    return IndexMethod::BRIN;
-}
-
-/**
- * Create a VACUUM builder.
- *
- * Example: vacuum()->table('users')
- * Produces: VACUUM users
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function vacuum() : VacuumFinalStep
-{
-    return VacuumBuilder::create();
-}
-
-/**
- * Create an ANALYZE builder.
- *
- * Example: analyze()->table('users')
- * Produces: ANALYZE users
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function analyze() : AnalyzeFinalStep
-{
-    return AnalyzeBuilder::create();
-}
-
-/**
- * Create an EXPLAIN builder for a query.
- *
- * Example: explain(select()->from('users'))
- * Produces: EXPLAIN SELECT * FROM users
- *
- * @param DeleteBuilder|InsertBuilder|SelectFinalStep|UpdateBuilder $query Query to explain
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function explain(SelectFinalStep|InsertBuilder|UpdateBuilder|DeleteBuilder $query) : ExplainFinalStep
-{
-    return ExplainBuilder::create($query);
-}
-
-/**
- * Create a LOCK TABLE builder.
- *
- * Example: lock_table('users', 'orders')->accessExclusive()
- * Produces: LOCK TABLE users, orders IN ACCESS EXCLUSIVE MODE
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function lock_table(string ...$tables) : LockFinalStep
-{
-    return LockBuilder::create(...$tables);
-}
-
-/**
- * Create a COMMENT ON builder.
- *
- * Example: comment(CommentTarget::TABLE, 'users')->is('User accounts table')
- * Produces: COMMENT ON TABLE users IS 'User accounts table'
- *
- * @param CommentTarget $target Target type (TABLE, COLUMN, INDEX, etc.)
- * @param string $name Target name (use 'table.column' for COLUMN targets)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function comment(CommentTarget $target, string $name) : CommentFinalStep
-{
-    return CommentBuilder::create($target, $name);
-}
-
-/**
- * Create a CLUSTER builder.
- *
- * Example: cluster()->table('users')->using('idx_users_pkey')
- * Produces: CLUSTER users USING idx_users_pkey
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function cluster() : ClusterFinalStep
-{
-    return ClusterBuilder::create();
-}
-
-/**
- * Create a DISCARD builder.
- *
- * Example: discard(DiscardType::ALL)
- * Produces: DISCARD ALL
- *
- * @param DiscardType $type Type of resources to discard (ALL, PLANS, SEQUENCES, TEMP)
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function discard(DiscardType $type) : DiscardFinalStep
-{
-    return DiscardBuilder::create($type);
-}
-
-/**
- * Create a GRANT privileges builder.
- *
- * Example: grant(TablePrivilege::SELECT)->onTable('users')->to('app_user')
- * Produces: GRANT SELECT ON users TO app_user
- *
- * Example: grant(TablePrivilege::ALL)->onAllTablesInSchema('public')->to('admin')
- * Produces: GRANT ALL ON ALL TABLES IN SCHEMA public TO admin
- *
- * @param string|TablePrivilege ...$privileges The privileges to grant
- *
- * @return GrantOnStep Builder for grant options
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function grant(TablePrivilege|string ...$privileges) : GrantOnStep
-{
-    return GrantBuilder::create(...$privileges);
-}
-
-/**
- * Create a GRANT role builder.
- *
- * Example: grant_role('admin')->to('user1')
- * Produces: GRANT admin TO user1
- *
- * Example: grant_role('admin', 'developer')->to('user1')->withAdminOption()
- * Produces: GRANT admin, developer TO user1 WITH ADMIN OPTION
- *
- * @param string ...$roles The roles to grant
- *
- * @return GrantRoleToStep Builder for grant role options
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function grant_role(string ...$roles) : GrantRoleToStep
-{
-    return GrantRoleBuilder::create(...$roles);
-}
-
-/**
- * Create a REVOKE privileges builder.
- *
- * Example: revoke(TablePrivilege::SELECT)->onTable('users')->from('app_user')
- * Produces: REVOKE SELECT ON users FROM app_user
- *
- * Example: revoke(TablePrivilege::ALL)->onTable('users')->from('app_user')->cascade()
- * Produces: REVOKE ALL ON users FROM app_user CASCADE
- *
- * @param string|TablePrivilege ...$privileges The privileges to revoke
- *
- * @return RevokeOnStep Builder for revoke options
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function revoke(TablePrivilege|string ...$privileges) : RevokeOnStep
-{
-    return RevokeBuilder::create(...$privileges);
-}
-
-/**
- * Create a REVOKE role builder.
- *
- * Example: revoke_role('admin')->from('user1')
- * Produces: REVOKE admin FROM user1
- *
- * Example: revoke_role('admin')->from('user1')->cascade()
- * Produces: REVOKE admin FROM user1 CASCADE
- *
- * @param string ...$roles The roles to revoke
- *
- * @return RevokeRoleFromStep Builder for revoke role options
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function revoke_role(string ...$roles) : RevokeRoleFromStep
-{
-    return RevokeRoleBuilder::create(...$roles);
-}
-
-/**
- * Create a SET ROLE builder.
- *
- * Example: set_role('admin')
- * Produces: SET ROLE admin
- *
- * @param string $role The role to set
- *
- * @return SetRoleFinalStep Builder for set role
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function set_role(string $role) : SetRoleFinalStep
-{
-    return SetRoleBuilder::create($role);
-}
-
-/**
- * Create a RESET ROLE builder.
- *
- * Example: reset_role()
- * Produces: RESET ROLE
- *
- * @return ResetRoleFinalStep Builder for reset role
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function reset_role() : ResetRoleFinalStep
-{
-    return ResetRoleBuilder::create();
-}
-
-/**
- * Create a REASSIGN OWNED builder.
- *
- * Example: reassign_owned('old_role')->to('new_role')
- * Produces: REASSIGN OWNED BY old_role TO new_role
- *
- * @param string ...$roles The roles whose owned objects should be reassigned
- *
- * @return ReassignOwnedToStep Builder for reassign owned options
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function reassign_owned(string ...$roles) : ReassignOwnedToStep
-{
-    return ReassignOwnedBuilder::create(...$roles);
-}
-
-/**
- * Create a DROP OWNED builder.
- *
- * Example: drop_owned('role1')
- * Produces: DROP OWNED BY role1
- *
- * Example: drop_owned('role1', 'role2')->cascade()
- * Produces: DROP OWNED BY role1, role2 CASCADE
- *
- * @param string ...$roles The roles whose owned objects should be dropped
- *
- * @return DropOwnedFinalStep Builder for drop owned options
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function drop_owned(string ...$roles) : DropOwnedFinalStep
-{
-    return DropOwnedBuilder::create(...$roles);
-}
-
-/**
- * Creates a new function argument for use in function/procedure definitions.
- *
- * Example: func_arg(data_type_integer())
- * Example: func_arg(data_type_text())->named('username')
- * Example: func_arg(data_type_integer())->named('count')->default('0')
- * Example: func_arg(data_type_text())->out()
- *
- * @param DataType $type The PostgreSQL data type for the argument
- *
- * @return FunctionArgument Builder for function argument options
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function func_arg(DataType $type) : FunctionArgument
-{
-    return FunctionArgument::of($type);
-}
-
-/**
- * Creates a CALL statement builder for invoking a procedure.
- *
- * Example: call('update_stats')->with(123)
- * Produces: CALL update_stats(123)
- *
- * Example: call('process_data')->with('test', 42, true)
- * Produces: CALL process_data('test', 42, true)
- *
- * @param string $procedure The name of the procedure to call
- *
- * @return CallFinalStep Builder for call statement options
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function call(string $procedure) : CallFinalStep
-{
-    return CallBuilder::create($procedure);
-}
-
-/**
- * Creates a DO statement builder for executing an anonymous code block.
- *
- * Example: do_block('BEGIN RAISE NOTICE $$Hello World$$; END;')
- * Produces: DO $$ BEGIN RAISE NOTICE $$Hello World$$; END; $$ LANGUAGE plpgsql
- *
- * Example: do_block('SELECT 1')->language('sql')
- * Produces: DO $$ SELECT 1 $$ LANGUAGE sql
- *
- * @param string $code The anonymous code block to execute
- *
- * @return DoFinalStep Builder for DO statement options
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function do_block(string $code) : DoFinalStep
-{
-    return DoBuilder::create($code);
-}
-
-/**
- * Creates a type attribute for composite types.
- *
- * Example: type_attr('name', data_type_text())
- * Produces: name text
- *
- * Example: type_attr('description', data_type_text())->collate('en_US')
- * Produces: description text COLLATE "en_US"
- *
- * @param string $name The attribute name
- * @param DataType $type The attribute type
- *
- * @return TypeAttribute Type attribute value object
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function type_attr(string $name, DataType $type) : TypeAttribute
-{
-    return TypeAttribute::of($name, $type);
-}
-
-/**
- * Create connection parameters from a connection string.
- *
- * Accepts libpq-style connection strings:
- * - Key-value format: "host=localhost port=5432 dbname=mydb user=myuser password=secret"
- * - URI format: "postgresql://user:password@localhost:5432/dbname"
- *
- * @example
- * $params = pgsql_connection('host=localhost dbname=mydb');
- * $params = pgsql_connection('postgresql://user:pass@localhost/mydb');
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_connection(#[\SensitiveParameter] string $connectionString) : ConnectionParameters
-{
-    return ConnectionParameters::fromString($connectionString);
-}
-
-/**
- * Create connection parameters from a DSN string.
- *
- * Parses standard PostgreSQL DSN format commonly used in environment variables
- * (e.g., DATABASE_URL). Supports postgres://, postgresql://, and pgsql:// schemes.
- *
- * @param string $dsn DSN string in format: postgres://user:password@host:port/database?options
- *
- * @throws Client\DsnParserException If the DSN cannot be parsed
- *
- * @example
- * $params = pgsql_connection_dsn('postgres://myuser:secret@localhost:5432/mydb');
- * $params = pgsql_connection_dsn('postgresql://user:pass@db.example.com/app?sslmode=require');
- * $params = pgsql_connection_dsn('pgsql://user:pass@localhost/mydb'); // Symfony/Doctrine format
- * $params = pgsql_connection_dsn(getenv('DATABASE_URL'));
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_connection_dsn(#[\SensitiveParameter] string $dsn) : ConnectionParameters
-{
-    return (new DsnParser())->parse($dsn);
-}
-
-/**
- * Create connection parameters from individual values.
- *
- * Allows specifying connection parameters individually for better type safety
- * and IDE support.
- *
- * @param string $database Database name (required)
- * @param string $host Hostname (default: localhost)
- * @param int $port Port number (default: 5432)
- * @param null|string $user Username (optional)
- * @param null|string $password Password (optional)
- * @param array<string, string> $options Additional libpq options
- *
- * @example
- * $params = pgsql_connection_params(
- *     database: 'mydb',
- *     host: 'localhost',
- *     user: 'myuser',
- *     password: 'secret',
- * );
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_connection_params(
-    string $database,
-    string $host = 'localhost',
-    int $port = 5432,
-    ?string $user = null,
-    ?string $password = null,
-    array $options = [],
-) : ConnectionParameters {
-    return ConnectionParameters::fromParams(
-        database: $database,
-        host: $host,
-        port: $port,
-        user: $user,
-        password: $password,
-        options: $options,
-    );
-}
-
-/**
- * Create a PostgreSQL client using ext-pgsql.
- *
- * The client connects immediately and is ready to execute queries.
- * For object mapping, provide a RowMapper (use pgsql_mapper() for the default).
- *
- * @param Client\ConnectionParameters $params Connection parameters
- * @param null|ValueConverters $valueConverters Custom type converters (optional)
- * @param null|Client\RowMapper $mapper Row mapper for object hydration (optional)
- *
- * @throws ConnectionException If connection fails
- *
- * @example
- * // Basic client
- * $client = pgsql_client(pgsql_connection('host=localhost dbname=mydb'));
- *
- * // With object mapping
- * $client = pgsql_client(
- *     pgsql_connection('host=localhost dbname=mydb'),
- *     mapper: pgsql_mapper(),
- * );
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_client(
-    ConnectionParameters $params,
-    ?ValueConverters $valueConverters = null,
-    ?RowMapper $mapper = null,
-) : Client\Client {
-    return PgSqlClient::connect($params, $valueConverters, $mapper);
-}
-
-/**
- * Create telemetry options for PostgreSQL client instrumentation.
- *
- * Controls which telemetry signals (traces, metrics, logs) are enabled
- * and how query information is captured.
- *
- * @param bool $traceQueries Create spans for query execution (default: true)
- * @param bool $traceTransactions Create spans for transactions (default: true)
- * @param bool $collectMetrics Collect duration and row count metrics (default: true)
- * @param bool $logQueries Log executed queries (default: false)
- * @param null|int $maxQueryLength Maximum query text length in telemetry (default: 1000, null = unlimited)
- * @param bool $includeParameters Include query parameters in telemetry (default: false, security consideration)
- *
- * @example
- * // Default options (traces and metrics enabled)
- * $options = postgresql_telemetry_options();
- *
- * // Enable query logging
- * $options = postgresql_telemetry_options(logQueries: true);
- *
- * // Disable all but metrics
- * $options = postgresql_telemetry_options(
- *     traceQueries: false,
- *     traceTransactions: false,
- *     collectMetrics: true,
- * );
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function postgresql_telemetry_options(
-    bool $traceQueries = true,
-    bool $traceTransactions = true,
-    bool $collectMetrics = true,
-    bool $logQueries = false,
-    ?int $maxQueryLength = 1000,
-    bool $includeParameters = false,
-    ?int $maxParameters = 10,
-    ?int $maxParameterLength = 100,
-) : PostgreSqlTelemetryOptions {
-    return new PostgreSqlTelemetryOptions(
-        traceQueries: $traceQueries,
-        traceTransactions: $traceTransactions,
-        collectMetrics: $collectMetrics,
-        logQueries: $logQueries,
-        maxQueryLength: $maxQueryLength,
-        includeParameters: $includeParameters,
-        maxParameters: $maxParameters,
-        maxParameterLength: $maxParameterLength,
-    );
-}
-
-/**
- * Create telemetry configuration for PostgreSQL client.
- *
- * Bundles telemetry instance, clock, and options needed to instrument a PostgreSQL client.
- *
- * @param Telemetry $telemetry The telemetry instance
- * @param ClockInterface $clock Clock for timestamps
- * @param null|PostgreSqlTelemetryOptions $options Telemetry options (default: all enabled)
- *
- * @example
- * $config = postgresql_telemetry_config(
- *     telemetry(resource(['service.name' => 'my-app'])),
- *     new SystemClock(),
- * );
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function postgresql_telemetry_config(
-    Telemetry $telemetry,
-    ClockInterface $clock,
-    ?PostgreSqlTelemetryOptions $options = null,
-) : PostgreSqlTelemetryConfig {
-    return new PostgreSqlTelemetryConfig(
-        telemetry: $telemetry,
-        clock: $clock,
-        options: $options ?? new PostgreSqlTelemetryOptions(),
-    );
-}
-
-/**
- * Wrap a PostgreSQL client with telemetry instrumentation.
- *
- * Returns a decorator that adds spans, metrics, and logs to all
- * query and transaction operations following OpenTelemetry conventions.
- *
- * @param Client\Client $client The PostgreSQL client to instrument
- * @param PostgreSqlTelemetryConfig $telemetryConfig Telemetry configuration
- *
- * @example
- * $client = pgsql_client(pgsql_connection('host=localhost dbname=mydb'));
- *
- * $traceableClient = traceable_postgresql_client(
- *     $client,
- *     postgresql_telemetry_config(
- *         telemetry(resource(['service.name' => 'my-app'])),
- *         new SystemClock(),
- *         postgresql_telemetry_options(
- *             traceQueries: true,
- *             traceTransactions: true,
- *             collectMetrics: true,
- *             logQueries: true,
- *             maxQueryLength: 500,
- *         ),
- *     ),
- * );
- *
- * // All operations now traced
- * $traceableClient->transaction(function (Client $client) {
- *     $user = $client->fetchOne('SELECT * FROM users WHERE id = $1', [123]);
- *     $client->execute('UPDATE users SET last_login = NOW() WHERE id = $1', [123]);
- * });
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function traceable_postgresql_client(
-    Client\Client $client,
-    PostgreSqlTelemetryConfig $telemetryConfig,
-) : TraceableClient {
-    return new TraceableClient($client, $telemetryConfig);
-}
-
-/**
- * Create a default constructor-based row mapper.
- *
- * Maps database rows directly to constructor parameters.
- * Column names must match parameter names exactly (1:1).
- * Use SQL aliases if column names differ from parameter names.
- *
- * @example
- * // DTO where column names match parameter names
- * readonly class User {
- *     public function __construct(
- *         public int $id,
- *         public string $name,
- *         public string $email,
- *     ) {}
- * }
- *
- * // Usage
- * $client = pgsql_client(pgsql_connection('...'), mapper: pgsql_mapper());
- *
- * // For snake_case columns, use SQL aliases
- * $user = $client->fetchInto(
- *     User::class,
- *     'SELECT id, user_name AS name, user_email AS email FROM users WHERE id = $1',
- *     [1]
- * );
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_mapper() : ConstructorMapper
-{
-    return new ConstructorMapper();
-}
-
-/**
- * Wrap a value with explicit PostgreSQL type information for parameter binding.
- *
- * Use when auto-detection isn't sufficient or when you need to specify
- * the exact PostgreSQL type (since one PHP type can map to multiple PostgreSQL types):
- * - int could be INT2, INT4, or INT8
- * - string could be TEXT, VARCHAR, or CHAR
- * - array must always use typed() since auto-detection cannot determine element type
- * - DateTimeInterface could be TIMESTAMP or TIMESTAMPTZ
- * - Json could be JSON or JSONB
- *
- * @param mixed $value The value to bind
- * @param PostgreSqlType $targetType The PostgreSQL type to convert the value to
- *
- * @example
- * $client->fetch(
- *     'SELECT * FROM users WHERE id = $1 AND tags = $2',
- *     [
- *         typed('550e8400-e29b-41d4-a716-446655440000', PostgreSqlType::UUID),
- *         typed(['tag1', 'tag2'], PostgreSqlType::TEXT_ARRAY),
- *     ]
- * );
- */
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function typed(mixed $value, PostgreSqlType $targetType) : TypedValue
-{
-    return new TypedValue($value, $targetType);
-}
-
-// PostgreSqlType DSL functions - Scalar types
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_text() : PostgreSqlType
-{
-    return PostgreSqlType::TEXT;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_varchar() : PostgreSqlType
-{
-    return PostgreSqlType::VARCHAR;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_char() : PostgreSqlType
-{
-    return PostgreSqlType::CHAR;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_bpchar() : PostgreSqlType
-{
-    return PostgreSqlType::BPCHAR;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_int2() : PostgreSqlType
-{
-    return PostgreSqlType::INT2;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_smallint() : PostgreSqlType
-{
-    return PostgreSqlType::INT2;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_int4() : PostgreSqlType
-{
-    return PostgreSqlType::INT4;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_integer() : PostgreSqlType
-{
-    return PostgreSqlType::INT4;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_int8() : PostgreSqlType
-{
-    return PostgreSqlType::INT8;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_bigint() : PostgreSqlType
-{
-    return PostgreSqlType::INT8;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_float4() : PostgreSqlType
-{
-    return PostgreSqlType::FLOAT4;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_real() : PostgreSqlType
-{
-    return PostgreSqlType::FLOAT4;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_float8() : PostgreSqlType
-{
-    return PostgreSqlType::FLOAT8;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_double() : PostgreSqlType
-{
-    return PostgreSqlType::FLOAT8;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_numeric() : PostgreSqlType
-{
-    return PostgreSqlType::NUMERIC;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_money() : PostgreSqlType
-{
-    return PostgreSqlType::MONEY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_bool() : PostgreSqlType
-{
-    return PostgreSqlType::BOOL;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_boolean() : PostgreSqlType
-{
-    return PostgreSqlType::BOOL;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_bytea() : PostgreSqlType
-{
-    return PostgreSqlType::BYTEA;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_bit() : PostgreSqlType
-{
-    return PostgreSqlType::BIT;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_varbit() : PostgreSqlType
-{
-    return PostgreSqlType::VARBIT;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_date() : PostgreSqlType
-{
-    return PostgreSqlType::DATE;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_time() : PostgreSqlType
-{
-    return PostgreSqlType::TIME;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_timetz() : PostgreSqlType
-{
-    return PostgreSqlType::TIMETZ;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_timestamp() : PostgreSqlType
-{
-    return PostgreSqlType::TIMESTAMP;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_timestamptz() : PostgreSqlType
-{
-    return PostgreSqlType::TIMESTAMPTZ;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_interval() : PostgreSqlType
-{
-    return PostgreSqlType::INTERVAL;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_json() : PostgreSqlType
-{
-    return PostgreSqlType::JSON;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_jsonb() : PostgreSqlType
-{
-    return PostgreSqlType::JSONB;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_uuid() : PostgreSqlType
-{
-    return PostgreSqlType::UUID;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_inet() : PostgreSqlType
-{
-    return PostgreSqlType::INET;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_cidr() : PostgreSqlType
-{
-    return PostgreSqlType::CIDR;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_macaddr() : PostgreSqlType
-{
-    return PostgreSqlType::MACADDR;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_macaddr8() : PostgreSqlType
-{
-    return PostgreSqlType::MACADDR8;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_xml() : PostgreSqlType
-{
-    return PostgreSqlType::XML;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_oid() : PostgreSqlType
-{
-    return PostgreSqlType::OID;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_text_array() : PostgreSqlType
-{
-    return PostgreSqlType::TEXT_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_varchar_array() : PostgreSqlType
-{
-    return PostgreSqlType::VARCHAR_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_int2_array() : PostgreSqlType
-{
-    return PostgreSqlType::INT2_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_int4_array() : PostgreSqlType
-{
-    return PostgreSqlType::INT4_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_int8_array() : PostgreSqlType
-{
-    return PostgreSqlType::INT8_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_float4_array() : PostgreSqlType
-{
-    return PostgreSqlType::FLOAT4_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_float8_array() : PostgreSqlType
-{
-    return PostgreSqlType::FLOAT8_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_bool_array() : PostgreSqlType
-{
-    return PostgreSqlType::BOOL_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_uuid_array() : PostgreSqlType
-{
-    return PostgreSqlType::UUID_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_json_array() : PostgreSqlType
-{
-    return PostgreSqlType::JSON_ARRAY;
-}
-
-#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
-function pgsql_type_jsonb_array() : PostgreSqlType
-{
-    return PostgreSqlType::JSONB_ARRAY;
-}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/DSL/parser.php b/src/lib/postgresql/src/Flow/PostgreSql/DSL/parser.php
new file mode 100644
index 0000000000..a98d5595cf
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/DSL/parser.php
@@ -0,0 +1,340 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\DSL;
+
+use Flow\ETL\Attribute\{DocumentationDSL, Module, Type as DSLType};
+use Flow\PostgreSql\AST\Transformers\{CountModifier, ExplainConfig, ExplainModifier, KeysetColumn, KeysetPaginationConfig, KeysetPaginationModifier, PaginationConfig, PaginationModifier, SortOrder};
+use Flow\PostgreSql\{DeparseOptions, ParsedQuery, Parser};
+use Flow\PostgreSql\Explain\Analyzer\PlanAnalyzer;
+use Flow\PostgreSql\Explain\ExplainParser;
+use Flow\PostgreSql\Explain\Plan\Plan;
+use Flow\PostgreSql\Extractors\{Columns, Functions, OrderBy as OrderByExtractor, QueryDepth, Tables};
+use Flow\PostgreSql\QueryBuilder\Utility\ExplainFormat;
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_parser() : Parser
+{
+    return new Parser();
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_parse(string $sql) : ParsedQuery
+{
+    return (new Parser())->parse($sql);
+}
+
+/**
+ * Returns a fingerprint of the given SQL query.
+ * Literal values are normalized so they won't affect the fingerprint.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_fingerprint(string $sql) : ?string
+{
+    return (new Parser())->fingerprint($sql);
+}
+
+/**
+ * Normalize SQL query by replacing literal values and named parameters with positional parameters.
+ * WHERE id = :id will be changed into WHERE id = $1
+ * WHERE id = 1 will be changed into WHERE id = $1.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_normalize(string $sql) : ?string
+{
+    return (new Parser())->normalize($sql);
+}
+
+/**
+ * Normalize utility SQL statements (DDL like CREATE, ALTER, DROP).
+ * This handles DDL statements differently from pg_normalize() which is optimized for DML.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_normalize_utility(string $sql) : ?string
+{
+    return (new Parser())->normalizeUtility($sql);
+}
+
+/**
+ * Split string with multiple SQL statements into array of individual statements.
+ *
+ * @return array<string>
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_split(string $sql) : array
+{
+    return (new Parser())->split($sql);
+}
+
+/**
+ * Create DeparseOptions for configuring SQL formatting.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_deparse_options() : DeparseOptions
+{
+    return DeparseOptions::new();
+}
+
+/**
+ * Convert a ParsedQuery AST back to SQL string.
+ *
+ * When called without options, returns the SQL as a simple string.
+ * When called with DeparseOptions, applies formatting (pretty-printing, indentation, etc.).
+ *
+ * @throws \RuntimeException if deparsing fails
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_deparse(ParsedQuery $query, ?DeparseOptions $options = null) : string
+{
+    return $query->deparse($options);
+}
+
+/**
+ * Parse and format SQL query with pretty printing.
+ *
+ * This is a convenience function that parses SQL and returns it formatted.
+ *
+ * @param string $sql The SQL query to format
+ * @param null|DeparseOptions $options Formatting options (defaults to pretty-print enabled)
+ *
+ * @throws \RuntimeException if parsing or deparsing fails
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_format(string $sql, ?DeparseOptions $options = null) : string
+{
+    return (new Parser())->parse($sql)->deparse($options ?? DeparseOptions::new());
+}
+
+/**
+ * Generate a summary of parsed queries in protobuf format.
+ * Useful for query monitoring and logging without full AST overhead.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_summary(string $sql, int $options = 0, int $truncateLimit = 0) : string
+{
+    return (new Parser())->summary($sql, $options, $truncateLimit);
+}
+
+/**
+ * Transform a SQL query into a paginated query with LIMIT and OFFSET.
+ *
+ * @param string $sql The SQL query to paginate
+ * @param int $limit Maximum number of rows to return
+ * @param int $offset Number of rows to skip (requires ORDER BY in query)
+ *
+ * @return string The paginated SQL query
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_to_paginated_query(string $sql, int $limit, int $offset = 0) : string
+{
+    $query = (new Parser())->parse($sql);
+    $query->traverse(new PaginationModifier(new PaginationConfig($limit, $offset)));
+
+    return $query->deparse();
+}
+
+/**
+ * Transform a SQL query to limit results to a specific number of rows.
+ *
+ * @param string $sql The SQL query to limit
+ * @param int $limit Maximum number of rows to return
+ *
+ * @return string The limited SQL query
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_to_limited_query(string $sql, int $limit) : string
+{
+    $query = (new Parser())->parse($sql);
+    $query->traverse(new PaginationModifier(new PaginationConfig($limit)));
+
+    return $query->deparse();
+}
+
+/**
+ * Transform a SQL query into a COUNT query for pagination.
+ *
+ * Wraps the query in: SELECT COUNT(*) FROM (...) AS _count_subq
+ * Removes ORDER BY and LIMIT/OFFSET from the inner query.
+ *
+ * @param string $sql The SQL query to transform
+ *
+ * @return string The COUNT query
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_to_count_query(string $sql) : string
+{
+    $query = (new Parser())->parse($sql);
+    $query->traverse(new CountModifier());
+
+    return $query->deparse();
+}
+
+/**
+ * Transform a SQL query into a keyset (cursor-based) paginated query.
+ *
+ * More efficient than OFFSET for large datasets - uses indexed WHERE conditions.
+ * Automatically detects existing query parameters and appends keyset placeholders at the end.
+ *
+ * @param string $sql The SQL query to paginate (must have ORDER BY)
+ * @param int $limit Maximum number of rows to return
+ * @param list<KeysetColumn> $columns Columns for keyset pagination (must match ORDER BY)
+ * @param null|list<null|bool|float|int|string> $cursor Values from last row of previous page (null for first page)
+ *
+ * @return string The paginated SQL query
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_to_keyset_query(string $sql, int $limit, array $columns, ?array $cursor = null) : string
+{
+    $query = (new Parser())->parse($sql);
+    $query->traverse(new KeysetPaginationModifier(new KeysetPaginationConfig($limit, $columns, $cursor)));
+
+    return $query->deparse();
+}
+
+/**
+ * Create a KeysetColumn for keyset pagination.
+ *
+ * @param string $column Column name (can include table alias like "u.id")
+ * @param SortOrder $order Sort order (ASC or DESC)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_keyset_column(string $column, SortOrder $order = SortOrder::ASC) : KeysetColumn
+{
+    return new KeysetColumn($column, $order);
+}
+
+/**
+ * Extract columns from a parsed SQL query.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_query_columns(ParsedQuery $query) : Columns
+{
+    return new Columns($query);
+}
+
+/**
+ * Extract tables from a parsed SQL query.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_query_tables(ParsedQuery $query) : Tables
+{
+    return new Tables($query);
+}
+
+/**
+ * Extract functions from a parsed SQL query.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_query_functions(ParsedQuery $query) : Functions
+{
+    return new Functions($query);
+}
+
+/**
+ * Extract ORDER BY clauses from a parsed SQL query.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_query_order_by(ParsedQuery $query) : OrderByExtractor
+{
+    return new OrderByExtractor($query);
+}
+
+/**
+ * Get the maximum nesting depth of a SQL query.
+ *
+ * Example:
+ * - "SELECT * FROM t" => 1
+ * - "SELECT * FROM (SELECT * FROM t)" => 2
+ * - "SELECT * FROM (SELECT * FROM (SELECT * FROM t))" => 3
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_query_depth(string $sql) : int
+{
+    return (new QueryDepth(sql_parse($sql)))->depth();
+}
+
+/**
+ * Transform a SQL query into an EXPLAIN query.
+ *
+ * Returns the modified SQL with EXPLAIN wrapped around it.
+ * Defaults to EXPLAIN ANALYZE with JSON format for easy parsing.
+ *
+ * @param string $sql The SQL query to explain
+ * @param null|ExplainConfig $config EXPLAIN configuration (defaults to forAnalysis())
+ *
+ * @return string The EXPLAIN query
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_to_explain(string $sql, ?ExplainConfig $config = null) : string
+{
+    $config ??= ExplainConfig::forAnalysis();
+    $query = (new Parser())->parse($sql);
+    $query->traverse(new ExplainModifier($config));
+
+    return $query->deparse();
+}
+
+/**
+ * Create an ExplainConfig for customizing EXPLAIN options.
+ *
+ * @param bool $analyze Whether to actually execute the query (ANALYZE)
+ * @param bool $verbose Include verbose output
+ * @param bool $costs Include cost estimates (default true)
+ * @param bool $buffers Include buffer usage statistics (requires analyze)
+ * @param bool $timing Include timing information (requires analyze)
+ * @param ExplainFormat $format Output format (JSON recommended for parsing)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_explain_config(
+    bool $analyze = true,
+    bool $verbose = false,
+    bool $costs = true,
+    bool $buffers = true,
+    bool $timing = true,
+    ExplainFormat $format = ExplainFormat::JSON,
+) : ExplainConfig {
+    return new ExplainConfig(
+        analyze: $analyze,
+        verbose: $verbose,
+        costs: $costs,
+        buffers: $buffers,
+        timing: $timing,
+        format: $format,
+    );
+}
+
+/**
+ * Create an ExplainModifier for transforming queries into EXPLAIN queries.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_explain_modifier(ExplainConfig $config) : ExplainModifier
+{
+    return new ExplainModifier($config);
+}
+
+/**
+ * Parse EXPLAIN JSON output into a Plan object.
+ *
+ * @param string $jsonOutput The JSON output from EXPLAIN (FORMAT JSON)
+ *
+ * @return Plan The parsed execution plan
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_explain_parse(string $jsonOutput) : Plan
+{
+    return (new ExplainParser())->parse($jsonOutput);
+}
+
+/**
+ * Create a plan analyzer for analyzing EXPLAIN plans.
+ *
+ * @param Plan $plan The execution plan to analyze
+ *
+ * @return PlanAnalyzer The analyzer for extracting insights
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sql_analyze(Plan $plan) : PlanAnalyzer
+{
+    return new PlanAnalyzer($plan);
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/DSL/query.php b/src/lib/postgresql/src/Flow/PostgreSql/DSL/query.php
new file mode 100644
index 0000000000..8d09a8ea22
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/DSL/query.php
@@ -0,0 +1,1156 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\DSL;
+
+use Flow\ETL\Attribute\{DocumentationDSL, Module, Type as DSLType};
+use Flow\PostgreSql\Protobuf\AST\Node;
+use Flow\PostgreSql\QueryBuilder\Clause\{
+    CTE,
+    CTEMaterialization,
+    ConflictTarget,
+    FrameBound,
+    FrameExclusion,
+    FrameMode,
+    LockStrength,
+    LockWaitPolicy,
+    LockingClause,
+    NullsPosition,
+    OnConflictClause,
+    OrderBy,
+    ReturningClause,
+    SortDirection,
+    WindowDefinition,
+    WindowFrame
+};
+use Flow\PostgreSql\QueryBuilder\Clause\WithClause;
+use Flow\PostgreSql\QueryBuilder\Cursor\{
+    CloseCursorBuilder,
+    CloseCursorFinalStep,
+    DeclareCursorBuilder,
+    DeclareCursorOptionsStep,
+    FetchCursorBuilder
+};
+use Flow\PostgreSql\QueryBuilder\Delete\{DeleteBuilder, DeleteFromStep};
+use Flow\PostgreSql\QueryBuilder\Exception\InvalidExpressionException;
+use Flow\PostgreSql\QueryBuilder\Expression\{
+    AggregateCall,
+    ArrayExpression,
+    BinaryExpression,
+    CaseExpression,
+    Coalesce,
+    Column,
+    Expression,
+    FunctionCall,
+    Greatest,
+    Least,
+    Literal,
+    NullIf,
+    Parameter,
+    RowExpression,
+    SQLValueFunctionExpression,
+    Star,
+    Subquery,
+    TypeCast,
+    WhenClause,
+    WindowFunction
+};
+use Flow\PostgreSql\QueryBuilder\Factory\CopyFactory;
+use Flow\PostgreSql\QueryBuilder\Insert\{BulkInsert, InsertBuilder, InsertIntoStep};
+use Flow\PostgreSql\QueryBuilder\Merge\{MergeBuilder, MergeUsingStep};
+use Flow\PostgreSql\QueryBuilder\{QualifiedIdentifier, Sql};
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\QueryBuilder\Select\{ParsedSelect, SelectBuilder, SelectFinalStep, SelectSelectStep};
+use Flow\PostgreSql\QueryBuilder\Table\{
+    DerivedTable,
+    Lateral,
+    Table,
+    TableFunction,
+    TableReference,
+    ValuesTable
+};
+use Flow\PostgreSql\QueryBuilder\Transaction\{
+    BeginBuilder,
+    BeginOptionsStep,
+    CommitBuilder,
+    CommitOptionsStep,
+    PreparedTransactionBuilder,
+    PreparedTransactionFinalStep,
+    RollbackBuilder,
+    RollbackOptionsStep,
+    SavepointBuilder,
+    SavepointFinalStep,
+    SetTransactionBuilder,
+    SetTransactionFinalStep,
+    SetTransactionOptionsStep
+};
+use Flow\PostgreSql\QueryBuilder\Update\{UpdateBuilder, UpdateTableStep};
+use Flow\PostgreSql\QueryBuilder\With\WithBuilder;
+
+/**
+ * Create a new SELECT query builder.
+ *
+ * @param Expression|string ...$expressions Columns to select. If empty, returns SelectSelectStep.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function select(string|Expression ...$expressions) : SelectBuilder
+{
+    if ($expressions === []) {
+        return SelectBuilder::create();
+    }
+
+    $expressions = \array_map(
+        static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+        $expressions,
+    );
+
+    return SelectBuilder::create()->select(...$expressions);
+}
+
+/**
+ * Create a SelectFinalStep from a raw SQL SELECT string.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function parsed_select(string $sql) : ParsedSelect
+{
+    return new ParsedSelect($sql);
+}
+
+/**
+ * Create a WITH clause builder for CTEs.
+ *
+ * Example: with(cte('users', $subquery))->select(star())->from(table('users'))
+ * Example: with(cte('a', $q1), cte('b', $q2))->recursive()->select(...)->from(table('a'))
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function with(CTE ...$ctes) : WithBuilder
+{
+    if ($ctes === []) {
+        throw new \InvalidArgumentException('At least one CTE is required');
+    }
+
+    return new WithBuilder(new WithClause($ctes));
+}
+
+/**
+ * Create a new INSERT query builder.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function insert() : InsertIntoStep
+{
+    return InsertBuilder::create();
+}
+
+/**
+ * Create an optimized bulk INSERT query for high-performance multi-row inserts.
+ *
+ * Unlike insert() which uses immutable builder patterns (O(n²) for n rows),
+ * this function generates SQL directly using string operations (O(n) complexity).
+ *
+ * @param string $table Table name
+ * @param list<string> $columns Column names
+ * @param int $rowCount Number of rows to insert
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function bulk_insert(string $table, array $columns, int $rowCount) : BulkInsert
+{
+    return BulkInsert::into($table, $columns, $rowCount);
+}
+
+/**
+ * Create a new UPDATE query builder.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function update() : UpdateTableStep
+{
+    return UpdateBuilder::create();
+}
+
+/**
+ * Create a new DELETE query builder.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function delete() : DeleteFromStep
+{
+    return DeleteBuilder::create();
+}
+
+/**
+ * Create a new MERGE query builder.
+ *
+ * @param string $table Target table name
+ * @param null|string $alias Optional table alias
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function merge(string $table, ?string $alias = null) : MergeUsingStep
+{
+    return MergeBuilder::create()->into($table, $alias);
+}
+
+/**
+ * Create a new COPY query builder for data import/export.
+ *
+ * Usage:
+ *   copy()->from('users')->file('/tmp/users.csv')->format(CopyFormat::CSV)
+ *   copy()->to('users')->file('/tmp/users.csv')->format(CopyFormat::CSV)
+ *   copy()->toQuery(select(...))->file('/tmp/data.csv')
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function copy() : CopyFactory
+{
+    return new CopyFactory();
+}
+
+/**
+ * Create a column reference expression.
+ *
+ * Can be used in two modes:
+ * - Parse mode: col('users.id') or col('schema.table.column') - parses dot-separated string
+ * - Explicit mode: col('id', 'users') or col('id', 'users', 'schema') - separate arguments
+ *
+ * When $table or $schema is provided, $column must be a plain column name (no dots).
+ *
+ * @param string $column Column name, or dot-separated path like "table.column" or "schema.table.column"
+ * @param null|string $table Table name (optional, triggers explicit mode)
+ * @param null|string $schema Schema name (optional, requires $table)
+ *
+ * @throws InvalidExpressionException when $schema is provided without $table, or when $column contains dots in explicit mode
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function col(string $column, ?string $table = null, ?string $schema = null) : Column
+{
+    if ($table !== null || $schema !== null) {
+        if ($schema !== null && $table === null) {
+            throw new InvalidExpressionException('Cannot specify schema without table in col()');
+        }
+
+        if (\str_contains($column, '.')) {
+            throw new InvalidExpressionException('Column name cannot contain dots when table or schema is specified. Use col("table.column") or col("column", "table") but not both.');
+        }
+
+        if ($schema !== null && $table !== null) {
+            return Column::schemaTableColumn($schema, $table, $column);
+        }
+
+        if ($table === null) {
+            return Column::fromParts(QualifiedIdentifier::parse($column)->parts());
+        }
+
+        return Column::tableColumn($table, $column);
+    }
+
+    return Column::fromParts(QualifiedIdentifier::parse($column)->parts());
+}
+
+/**
+ * Create a SELECT * expression.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function star(?string $table = null) : Star
+{
+    return $table !== null ? Star::fromTable($table) : Star::all();
+}
+
+/**
+ * Create a literal value for use in queries.
+ *
+ * Automatically detects the type and creates the appropriate literal:
+ * - literal('hello') creates a string literal
+ * - literal(42) creates an integer literal
+ * - literal(3.14) creates a float literal
+ * - literal(true) creates a boolean literal
+ * - literal(null) creates a NULL literal
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function literal(string|int|float|bool|null $value) : Literal
+{
+    return match (true) {
+        $value === null => Literal::null(),
+        \is_string($value) => Literal::string($value),
+        \is_int($value) => Literal::int($value),
+        \is_float($value) => Literal::float($value),
+        \is_bool($value) => Literal::bool($value),
+    };
+}
+
+/**
+ * Create a positional parameter ($1, $2, etc.).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function param(int $position) : Parameter
+{
+    return Parameter::positional($position);
+}
+
+/**
+ * @return list<Parameter>
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function parameters(int $count, int $startAt = 1) : array
+{
+    if ($count < 1) {
+        throw new \InvalidArgumentException('Parameter count must be at least 1');
+    }
+
+    if ($startAt < 1) {
+        throw new \InvalidArgumentException('Start position must be at least 1');
+    }
+
+    $params = [];
+
+    for ($i = 0; $i < $count; $i++) {
+        $params[] = Parameter::positional($startAt + $i);
+    }
+
+    return $params;
+}
+
+/**
+ * Create a function call expression.
+ *
+ * @param string $name Function name (can include schema like "pg_catalog.now")
+ * @param list<Expression|string> $args Function arguments
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function func(string $name, array $args = []) : FunctionCall
+{
+    return new FunctionCall(
+        QualifiedIdentifier::parse($name)->parts(),
+        \array_map(
+            static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+            $args,
+        ),
+    );
+}
+
+/**
+ * Create an aggregate function call (COUNT, SUM, AVG, etc.).
+ *
+ * @param string $name Aggregate function name
+ * @param list<Expression|string> $args Function arguments
+ * @param bool $distinct Use DISTINCT modifier
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function agg(string $name, array $args = [], bool $distinct = false) : AggregateCall
+{
+    return new AggregateCall(
+        [$name],
+        \array_map(
+            static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+            $args,
+        ),
+        false,
+        $distinct,
+    );
+}
+
+/**
+ * Create COUNT(*) aggregate.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function agg_count(string|Expression|null $expr = null, bool $distinct = false) : AggregateCall
+{
+    if ($expr === null) {
+        return new AggregateCall(['count'], [], true, false);
+    }
+
+    return new AggregateCall(['count'], [$expr instanceof Expression ? $expr : col($expr)], false, $distinct);
+}
+
+/**
+ * Create SUM aggregate.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function agg_sum(string|Expression $expr, bool $distinct = false) : AggregateCall
+{
+    return new AggregateCall(['sum'], [$expr instanceof Expression ? $expr : col($expr)], false, $distinct);
+}
+
+/**
+ * Create AVG aggregate.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function agg_avg(string|Expression $expr, bool $distinct = false) : AggregateCall
+{
+    return new AggregateCall(['avg'], [$expr instanceof Expression ? $expr : col($expr)], false, $distinct);
+}
+
+/**
+ * Create MIN aggregate.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function agg_min(string|Expression $expr) : AggregateCall
+{
+    return new AggregateCall(['min'], [$expr instanceof Expression ? $expr : col($expr)]);
+}
+
+/**
+ * Create MAX aggregate.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function agg_max(string|Expression $expr) : AggregateCall
+{
+    return new AggregateCall(['max'], [$expr instanceof Expression ? $expr : col($expr)]);
+}
+
+/**
+ * Create a COALESCE expression.
+ *
+ * @param Expression|string ...$expressions Expressions to coalesce
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function coalesce(string|Expression ...$expressions) : Coalesce
+{
+    return new Coalesce(\array_map(
+        static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+        \array_values($expressions),
+    ));
+}
+
+/**
+ * Create a NULLIF expression.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function nullif(string|Expression $expr1, string|Expression $expr2) : NullIf
+{
+    return new NullIf(
+        $expr1 instanceof Expression ? $expr1 : col($expr1),
+        $expr2 instanceof Expression ? $expr2 : col($expr2),
+    );
+}
+
+/**
+ * Create a GREATEST expression.
+ *
+ * @param Expression|string ...$expressions Expressions to compare
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function greatest(string|Expression ...$expressions) : Greatest
+{
+    return new Greatest(\array_map(
+        static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+        \array_values($expressions),
+    ));
+}
+
+/**
+ * Create a LEAST expression.
+ *
+ * @param Expression|string ...$expressions Expressions to compare
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function least(string|Expression ...$expressions) : Least
+{
+    return new Least(\array_map(
+        static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+        \array_values($expressions),
+    ));
+}
+
+/**
+ * Create a type cast expression.
+ *
+ * @param Expression $expr Expression to cast
+ * @param ColumnType $dataType Target data type (use column_type_* functions)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function cast(string|Expression $expr, ColumnType $dataType) : TypeCast
+{
+    return new TypeCast($expr instanceof Expression ? $expr : col($expr), $dataType);
+}
+
+/**
+ * SQL standard CURRENT_TIMESTAMP function.
+ *
+ * Returns the current date and time (at the start of the transaction).
+ * Useful as a column default value or in SELECT queries.
+ *
+ * Example: column('created_at', column_type_timestamp())->default(current_timestamp())
+ * Example: select()->select(current_timestamp()->as('now'))
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function current_timestamp() : SQLValueFunctionExpression
+{
+    return SQLValueFunctionExpression::currentTimestamp();
+}
+
+/**
+ * SQL standard CURRENT_DATE function.
+ *
+ * Returns the current date (at the start of the transaction).
+ * Useful as a column default value or in SELECT queries.
+ *
+ * Example: column('birth_date', column_type_date())->default(current_date())
+ * Example: select()->select(current_date()->as('today'))
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function current_date() : SQLValueFunctionExpression
+{
+    return SQLValueFunctionExpression::currentDate();
+}
+
+/**
+ * SQL standard CURRENT_TIME function.
+ *
+ * Returns the current time (at the start of the transaction).
+ * Useful as a column default value or in SELECT queries.
+ *
+ * Example: column('start_time', column_type_time())->default(current_time())
+ * Example: select()->select(current_time()->as('now_time'))
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function current_time() : SQLValueFunctionExpression
+{
+    return SQLValueFunctionExpression::currentTime();
+}
+
+/**
+ * Create a CASE expression.
+ *
+ * @param non-empty-list<WhenClause> $whenClauses WHEN clauses
+ * @param null|Expression|string $elseResult ELSE result (optional)
+ * @param null|Expression|string $operand CASE operand for simple CASE (optional)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function case_when(array $whenClauses, string|Expression|null $elseResult = null, string|Expression|null $operand = null) : CaseExpression
+{
+    return new CaseExpression(
+        $operand === null ? null : ($operand instanceof Expression ? $operand : col($operand)),
+        \array_values($whenClauses),
+        $elseResult === null ? null : ($elseResult instanceof Expression ? $elseResult : col($elseResult)),
+    );
+}
+
+/**
+ * Create a WHEN clause for CASE expression.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function when(string|Expression $condition, string|Expression $result) : WhenClause
+{
+    return new WhenClause(
+        $condition instanceof Expression ? $condition : col($condition),
+        $result instanceof Expression ? $result : col($result),
+    );
+}
+
+/**
+ * Create a subquery expression.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function sub_select(SelectFinalStep $query) : Subquery
+{
+    $node = new Node();
+    $node->setSelectStmt($query->toAst());
+
+    return new Subquery($node);
+}
+
+/**
+ * Create an array expression.
+ *
+ * @param list<Expression|string> $elements Array elements
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function array_expr(array $elements) : ArrayExpression
+{
+    return new ArrayExpression(\array_map(
+        static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+        \array_values($elements),
+    ));
+}
+
+/**
+ * Create a row expression.
+ *
+ * @param list<Expression|string> $elements Row elements
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function row_expr(array $elements) : RowExpression
+{
+    return new RowExpression(\array_map(
+        static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+        \array_values($elements),
+    ));
+}
+
+/**
+ * Create a binary expression (left op right).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function binary_expr(string|Expression $left, string $operator, string|Expression $right) : BinaryExpression
+{
+    return new BinaryExpression(
+        $left instanceof Expression ? $left : col($left),
+        $operator,
+        $right instanceof Expression ? $right : col($right),
+    );
+}
+
+/**
+ * Create a window function.
+ *
+ * @param string $name Function name
+ * @param list<Expression|string> $args Function arguments
+ * @param list<Expression|string> $partitionBy PARTITION BY expressions
+ * @param list<OrderBy> $orderBy ORDER BY items
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function window_func(
+    string $name,
+    array $args = [],
+    array $partitionBy = [],
+    array $orderBy = [],
+) : WindowFunction {
+    $coerce = static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e);
+
+    return new WindowFunction(
+        [$name],
+        \array_map($coerce, \array_values($args)),
+        \array_map($coerce, \array_values($partitionBy)),
+        \array_values($orderBy),
+    );
+}
+
+/**
+ * Concatenate expressions with the || operator.
+ *
+ * Example: concat(col('schema'), literal('.'), col('table'))
+ * Produces: schema || '.' || table
+ *
+ * @param Expression|string ...$expressions At least 2 expressions to concatenate
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function concat(string|Expression ...$expressions) : BinaryExpression
+{
+    if (\count($expressions) < 2) {
+        throw InvalidExpressionException::emptyArray('concat requires at least 2 expressions');
+    }
+
+    $expressions = \array_map(
+        static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+        $expressions,
+    );
+
+    $result = $expressions[0];
+
+    for ($i = 1; $i < \count($expressions); $i++) {
+        $result = new BinaryExpression($result, '||', $expressions[$i]);
+    }
+
+    /** @var BinaryExpression $result */
+    return $result;
+}
+
+/**
+ * Create a table reference.
+ *
+ * Supports dot notation for schema-qualified names: "public.users" or explicit schema parameter.
+ * Double-quoted identifiers preserve dots: '"my.table"' creates a single identifier.
+ *
+ * @param string $name Table name (may include schema as "schema.table")
+ * @param null|string $schema Schema name (optional, overrides parsed schema)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function table(string $name, ?string $schema = null) : Table
+{
+    if ($schema !== null) {
+        return new Table($name, $schema);
+    }
+
+    $identifier = QualifiedIdentifier::parse($name);
+
+    return new Table($identifier->name(), $identifier->schema());
+}
+
+/**
+ * Create a derived table (subquery in FROM clause).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function derived(SelectFinalStep $query, string $alias) : DerivedTable
+{
+    $node = new Node();
+    $node->setSelectStmt($query->toAst());
+
+    return new DerivedTable($node, $alias);
+}
+
+/**
+ * Create a LATERAL subquery.
+ *
+ * @param TableReference $reference The subquery or table function reference
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function lateral(TableReference $reference) : Lateral
+{
+    return new Lateral($reference);
+}
+
+/**
+ * Create a table function reference.
+ *
+ * @param FunctionCall $function The table-valued function
+ * @param bool $withOrdinality Whether to add WITH ORDINALITY
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function table_func(FunctionCall $function, bool $withOrdinality = false) : TableFunction
+{
+    return new TableFunction($function, $withOrdinality);
+}
+
+/**
+ * Create a VALUES clause as a table reference.
+ *
+ * Usage:
+ *   select()->from(
+ *       values_table(
+ *           row_expr([literal(1), literal('Alice')]),
+ *           row_expr([literal(2), literal('Bob')])
+ *       )->as('t', ['id', 'name'])
+ *   )
+ *
+ * Generates: SELECT * FROM (VALUES (1, 'Alice'), (2, 'Bob')) AS t(id, name)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function values_table(RowExpression ...$rows) : ValuesTable
+{
+    return new ValuesTable($rows);
+}
+
+/**
+ * Create an ORDER BY item.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function order_by(
+    string|Expression $expr,
+    SortDirection $direction = SortDirection::ASC,
+    NullsPosition $nulls = NullsPosition::DEFAULT,
+) : OrderBy {
+    return new OrderBy($expr instanceof Expression ? $expr : col($expr), $direction, $nulls);
+}
+
+/**
+ * Create an ORDER BY item with ASC direction.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function asc(string|Expression $expr, NullsPosition $nulls = NullsPosition::DEFAULT) : OrderBy
+{
+    return new OrderBy($expr instanceof Expression ? $expr : col($expr), SortDirection::ASC, $nulls);
+}
+
+/**
+ * Create an ORDER BY item with DESC direction.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function desc(string|Expression $expr, NullsPosition $nulls = NullsPosition::DEFAULT) : OrderBy
+{
+    return new OrderBy($expr instanceof Expression ? $expr : col($expr), SortDirection::DESC, $nulls);
+}
+
+/**
+ * Create a CTE (Common Table Expression).
+ *
+ * @param string $name CTE name
+ * @param SelectFinalStep $query CTE query
+ * @param array<string> $columnNames Column aliases (optional)
+ * @param CTEMaterialization $materialization Materialization hint
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function cte(
+    string $name,
+    SelectFinalStep $query,
+    array $columnNames = [],
+    CTEMaterialization $materialization = CTEMaterialization::DEFAULT,
+    bool $recursive = false,
+) : CTE {
+    $node = new Node();
+    $node->setSelectStmt($query->toAst());
+
+    return new CTE($name, $node, $columnNames, $materialization, $recursive);
+}
+
+/**
+ * Create a window definition for WINDOW clause.
+ *
+ * @param string $name Window name
+ * @param list<Expression|string> $partitionBy PARTITION BY expressions
+ * @param list<OrderBy> $orderBy ORDER BY items
+ * @param null|WindowFrame $frame Window frame specification
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function window_def(
+    string $name,
+    array $partitionBy = [],
+    array $orderBy = [],
+    ?WindowFrame $frame = null,
+) : WindowDefinition {
+    return new WindowDefinition(
+        $name,
+        \array_map(
+            static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+            \array_values($partitionBy),
+        ),
+        \array_values($orderBy),
+        $frame,
+    );
+}
+
+/**
+ * Create a window frame specification.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function window_frame(
+    FrameMode $mode,
+    FrameBound $start,
+    ?FrameBound $end = null,
+    FrameExclusion $exclusion = FrameExclusion::NO_OTHERS,
+) : WindowFrame {
+    return new WindowFrame($mode, $start, $end, $exclusion);
+}
+
+/**
+ * Create a frame bound for CURRENT ROW.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function frame_current_row() : FrameBound
+{
+    return FrameBound::currentRow();
+}
+
+/**
+ * Create a frame bound for UNBOUNDED PRECEDING.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function frame_unbounded_preceding() : FrameBound
+{
+    return FrameBound::unboundedPreceding();
+}
+
+/**
+ * Create a frame bound for UNBOUNDED FOLLOWING.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function frame_unbounded_following() : FrameBound
+{
+    return FrameBound::unboundedFollowing();
+}
+
+/**
+ * Create a frame bound for N PRECEDING.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function frame_preceding(string|Expression $offset) : FrameBound
+{
+    return FrameBound::preceding($offset instanceof Expression ? $offset : col($offset));
+}
+
+/**
+ * Create a frame bound for N FOLLOWING.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function frame_following(string|Expression $offset) : FrameBound
+{
+    return FrameBound::following($offset instanceof Expression ? $offset : col($offset));
+}
+
+/**
+ * Create a locking clause (FOR UPDATE, FOR SHARE, etc.).
+ *
+ * @param LockStrength $strength Lock strength
+ * @param list<string> $tables Tables to lock (empty for all)
+ * @param LockWaitPolicy $waitPolicy Wait policy
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function lock_for(
+    LockStrength $strength,
+    array $tables = [],
+    LockWaitPolicy $waitPolicy = LockWaitPolicy::DEFAULT,
+) : LockingClause {
+    return new LockingClause($strength, \array_values($tables), $waitPolicy);
+}
+
+/**
+ * Create a FOR UPDATE locking clause.
+ *
+ * @param list<string> $tables Tables to lock (empty for all)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function for_update(array $tables = []) : LockingClause
+{
+    return LockingClause::forUpdate(\array_values($tables));
+}
+
+/**
+ * Create a FOR SHARE locking clause.
+ *
+ * @param list<string> $tables Tables to lock (empty for all)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function for_share(array $tables = []) : LockingClause
+{
+    return LockingClause::forShare(\array_values($tables));
+}
+
+/**
+ * Create an ON CONFLICT DO NOTHING clause.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function on_conflict_nothing(?ConflictTarget $target = null) : OnConflictClause
+{
+    return OnConflictClause::doNothing($target);
+}
+
+/**
+ * Create an ON CONFLICT DO UPDATE clause.
+ *
+ * @param ConflictTarget $target Conflict target (columns or constraint)
+ * @param array<string, Expression|string> $updates Column updates
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function on_conflict_update(ConflictTarget $target, array $updates) : OnConflictClause
+{
+    return OnConflictClause::doUpdate($target, \array_map(
+        static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+        $updates,
+    ));
+}
+
+/**
+ * Create a conflict target for ON CONFLICT (columns).
+ *
+ * @param list<string> $columns Columns that define uniqueness
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function conflict_columns(array $columns) : ConflictTarget
+{
+    return ConflictTarget::columns(\array_values($columns));
+}
+
+/**
+ * Create a conflict target for ON CONFLICT ON CONSTRAINT.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function conflict_constraint(string $name) : ConflictTarget
+{
+    return ConflictTarget::constraint($name);
+}
+
+/**
+ * Create a RETURNING clause.
+ *
+ * @param Expression|string ...$expressions Expressions to return
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function returning(string|Expression ...$expressions) : ReturningClause
+{
+    return new ReturningClause(\array_map(
+        static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : col($e),
+        \array_values($expressions),
+    ));
+}
+
+/**
+ * Create a RETURNING * clause.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function returning_all() : ReturningClause
+{
+    return ReturningClause::all();
+}
+
+/**
+ * Create a BEGIN transaction builder.
+ *
+ * Example: begin()->isolationLevel(IsolationLevel::SERIALIZABLE)->readOnly()
+ * Produces: BEGIN ISOLATION LEVEL SERIALIZABLE READ ONLY
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function begin() : BeginOptionsStep
+{
+    return BeginBuilder::create();
+}
+
+/**
+ * Create a COMMIT transaction builder.
+ *
+ * Example: commit()->andChain()
+ * Produces: COMMIT AND CHAIN
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function commit() : CommitOptionsStep
+{
+    return CommitBuilder::create();
+}
+
+/**
+ * Create a ROLLBACK transaction builder.
+ *
+ * Example: rollback()->toSavepoint('my_savepoint')
+ * Produces: ROLLBACK TO SAVEPOINT my_savepoint
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function rollback() : RollbackOptionsStep
+{
+    return RollbackBuilder::create();
+}
+
+/**
+ * Create a SAVEPOINT.
+ *
+ * Example: savepoint('my_savepoint')
+ * Produces: SAVEPOINT my_savepoint
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function savepoint(string $name) : SavepointFinalStep
+{
+    return SavepointBuilder::create($name);
+}
+
+/**
+ * Release a SAVEPOINT.
+ *
+ * Example: release_savepoint('my_savepoint')
+ * Produces: RELEASE my_savepoint
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function release_savepoint(string $name) : SavepointFinalStep
+{
+    return SavepointBuilder::release($name);
+}
+
+/**
+ * Create a SET TRANSACTION builder.
+ *
+ * Example: set_transaction()->isolationLevel(IsolationLevel::SERIALIZABLE)->readOnly()
+ * Produces: SET TRANSACTION ISOLATION LEVEL SERIALIZABLE, READ ONLY
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function set_transaction() : SetTransactionOptionsStep
+{
+    return SetTransactionBuilder::create();
+}
+
+/**
+ * Create a SET SESSION CHARACTERISTICS AS TRANSACTION builder.
+ *
+ * Example: set_session_transaction()->isolationLevel(IsolationLevel::SERIALIZABLE)
+ * Produces: SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL SERIALIZABLE
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function set_session_transaction() : SetTransactionOptionsStep
+{
+    return SetTransactionBuilder::session();
+}
+
+/**
+ * Create a SET TRANSACTION SNAPSHOT builder.
+ *
+ * Example: transaction_snapshot('00000003-0000001A-1')
+ * Produces: SET TRANSACTION SNAPSHOT '00000003-0000001A-1'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function transaction_snapshot(string $snapshotId) : SetTransactionFinalStep
+{
+    return SetTransactionBuilder::create()->snapshot($snapshotId);
+}
+
+/**
+ * Create a PREPARE TRANSACTION builder.
+ *
+ * Example: prepare_transaction('my_transaction')
+ * Produces: PREPARE TRANSACTION 'my_transaction'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function prepare_transaction(string $transactionId) : PreparedTransactionFinalStep
+{
+    return PreparedTransactionBuilder::prepare($transactionId);
+}
+
+/**
+ * Create a COMMIT PREPARED builder.
+ *
+ * Example: commit_prepared('my_transaction')
+ * Produces: COMMIT PREPARED 'my_transaction'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function commit_prepared(string $transactionId) : PreparedTransactionFinalStep
+{
+    return PreparedTransactionBuilder::commitPrepared($transactionId);
+}
+
+/**
+ * Create a ROLLBACK PREPARED builder.
+ *
+ * Example: rollback_prepared('my_transaction')
+ * Produces: ROLLBACK PREPARED 'my_transaction'
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function rollback_prepared(string $transactionId) : PreparedTransactionFinalStep
+{
+    return PreparedTransactionBuilder::rollbackPrepared($transactionId);
+}
+
+/**
+ * Declare a server-side cursor for a query.
+ *
+ * Cursors must be declared within a transaction and provide memory-efficient
+ * iteration over large result sets via FETCH commands.
+ *
+ * Example with query builder:
+ *   declare_cursor('my_cursor', select(star())->from(table('users')))->noScroll()
+ *   Produces: DECLARE my_cursor NO SCROLL CURSOR FOR SELECT * FROM users
+ *
+ * Example with raw SQL:
+ *   declare_cursor('my_cursor', 'SELECT * FROM users WHERE active = true')->withHold()
+ *   Produces: DECLARE my_cursor NO SCROLL CURSOR WITH HOLD FOR SELECT * FROM users WHERE active = true
+ *
+ * @param string $cursorName Unique cursor name
+ * @param SelectFinalStep|Sql|string $query Query to iterate over
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function declare_cursor(string $cursorName, SelectFinalStep|string|Sql $query) : DeclareCursorOptionsStep
+{
+    if ($query instanceof SelectFinalStep) {
+        return DeclareCursorBuilder::create($cursorName, $query);
+    }
+
+    return DeclareCursorBuilder::createFromSql($cursorName, $query);
+}
+
+/**
+ * Fetch rows from a cursor.
+ *
+ * Example: fetch('my_cursor')->forward(100)
+ * Produces: FETCH FORWARD 100 my_cursor
+ *
+ * Example: fetch('my_cursor')->all()
+ * Produces: FETCH ALL my_cursor
+ *
+ * @param string $cursorName Cursor to fetch from
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function fetch(string $cursorName) : FetchCursorBuilder
+{
+    return FetchCursorBuilder::create($cursorName);
+}
+
+/**
+ * Close a cursor.
+ *
+ * Example: close_cursor('my_cursor')
+ * Produces: CLOSE my_cursor
+ *
+ * Example: close_cursor() - closes all cursors
+ * Produces: CLOSE ALL
+ *
+ * @param null|string $cursorName Cursor to close, or null to close all
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function close_cursor(?string $cursorName = null) : CloseCursorFinalStep
+{
+    if ($cursorName === null) {
+        return CloseCursorBuilder::closeAll();
+    }
+
+    return CloseCursorBuilder::close($cursorName);
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/DSL/schema.php b/src/lib/postgresql/src/Flow/PostgreSql/DSL/schema.php
new file mode 100644
index 0000000000..028387e3ec
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/DSL/schema.php
@@ -0,0 +1,1783 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\DSL;
+
+use Flow\ETL\Attribute\{DocumentationDSL, Module, Type as DSLType};
+use Flow\PostgreSql\Client\Infrastructure\PgSql\PgCatalogProvider;
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\{Client, Parser};
+use Flow\PostgreSql\Parser\ColumnTypeParser;
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
+use Flow\PostgreSql\QueryBuilder\Delete\DeleteBuilder;
+use Flow\PostgreSql\QueryBuilder\Expression\Expression;
+use Flow\PostgreSql\QueryBuilder\Factory\{AlterFactory, CreateFactory, DropFactory};
+use Flow\PostgreSql\QueryBuilder\Insert\InsertBuilder;
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, ColumnType, ReferentialAction};
+use Flow\PostgreSql\QueryBuilder\Schema\Constraint\{CheckConstraint, ForeignKeyConstraint, PrimaryKeyConstraint, UniqueConstraint};
+use Flow\PostgreSql\QueryBuilder\Schema\Function\{
+    CallBuilder,
+    CallFinalStep,
+    DoBuilder,
+    DoFinalStep,
+    FunctionArgument
+};
+use Flow\PostgreSql\QueryBuilder\Schema\Grant\{
+    GrantBuilder,
+    GrantOnStep,
+    GrantRoleBuilder,
+    GrantRoleToStep,
+    RevokeBuilder,
+    RevokeOnStep,
+    RevokeRoleBuilder,
+    RevokeRoleFromStep,
+    TablePrivilege
+};
+use Flow\PostgreSql\QueryBuilder\Schema\Index\{IndexColumn, IndexMethod};
+use Flow\PostgreSql\QueryBuilder\Schema\Index\Reindex\{ReindexBuilder, ReindexFinalStep};
+use Flow\PostgreSql\QueryBuilder\Schema\Ownership\{
+    DropOwnedBuilder,
+    DropOwnedFinalStep,
+    ReassignOwnedBuilder,
+    ReassignOwnedToStep
+};
+use Flow\PostgreSql\QueryBuilder\Schema\Session\{
+    ResetRoleBuilder,
+    ResetRoleFinalStep,
+    SetRoleBuilder,
+    SetRoleFinalStep
+};
+use Flow\PostgreSql\QueryBuilder\Schema\Truncate\{TruncateBuilder, TruncateFinalStep};
+use Flow\PostgreSql\QueryBuilder\Schema\Type\TypeAttribute;
+use Flow\PostgreSql\QueryBuilder\Schema\View\RefreshMaterializedView\{RefreshMatViewOptionsStep, RefreshMaterializedViewBuilder};
+use Flow\PostgreSql\QueryBuilder\Select\SelectFinalStep;
+use Flow\PostgreSql\QueryBuilder\Update\UpdateBuilder;
+use Flow\PostgreSql\QueryBuilder\Utility\{
+    AnalyzeBuilder,
+    AnalyzeFinalStep,
+    ClusterBuilder,
+    ClusterFinalStep,
+    CommentBuilder,
+    CommentFinalStep,
+    CommentTarget,
+    DiscardBuilder,
+    DiscardFinalStep,
+    DiscardType,
+    ExplainBuilder,
+    ExplainFinalStep,
+    LockBuilder,
+    LockFinalStep,
+    VacuumBuilder,
+    VacuumFinalStep
+};
+use Flow\PostgreSql\Schema\{
+    Column as SchemaColumn,
+    Domain as SchemaDomain,
+    Extension as SchemaExtension,
+    Func as SchemaFunction,
+    FunctionVolatility as SchemaFunctionVolatility,
+    IdentityGeneration,
+    Index as SchemaIndex,
+    IndexMethod as SchemaIndexMethod,
+    MaterializedView as SchemaMaterializedView,
+    PartitionStrategy,
+    Procedure as SchemaProcedure,
+    Schema as DatabaseSchema,
+    Sequence as SchemaSequence,
+    Table as SchemaTable,
+    Trigger as SchemaTrigger,
+    TriggerEvent,
+    TriggerTiming,
+    View as SchemaView
+};
+use Flow\PostgreSql\Schema\{Catalog, CatalogProvider, ChainCatalogProvider, ManualCatalogProvider};
+use Flow\PostgreSql\Schema\Constraint\{
+    CheckConstraint as SchemaCheckConstraint,
+    ExcludeConstraint as SchemaExcludeConstraint,
+    ForeignKey as SchemaForeignKey,
+    PrimaryKey as SchemaPrimaryKey,
+    UniqueConstraint as SchemaUniqueConstraint
+};
+use Flow\PostgreSql\Schema\Diff\{AstViewDependencyResolver, CatalogComparator, NoopViewDependencyResolver, RenameStrategy, ViewDependencyResolver};
+use Flow\PostgreSql\Schema\{ExecutionOrderStrategy, ForeignKeyDependencyOrder, MaterializedViewDependencyOrder, NoExecutionOrder, ViewDependencyOrder};
+
+/**
+ * Create a column definition for CREATE TABLE.
+ *
+ * @param string $name Column name
+ * @param ColumnType $type Column data type
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column(string $name, ColumnType $type) : ColumnDefinition
+{
+    return ColumnDefinition::create($name, $type);
+}
+
+/**
+ * Create a PRIMARY KEY constraint.
+ *
+ * @param string ...$columns Columns that form the primary key
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function primary_key(string ...$columns) : PrimaryKeyConstraint
+{
+    return PrimaryKeyConstraint::create(...$columns);
+}
+
+/**
+ * Create a UNIQUE constraint.
+ *
+ * @param string ...$columns Columns that must be unique together
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function unique_constraint(string ...$columns) : UniqueConstraint
+{
+    return UniqueConstraint::create(...$columns);
+}
+
+/**
+ * Create a FOREIGN KEY constraint.
+ *
+ * @param list<string> $columns Local columns
+ * @param string $referenceTable Referenced table
+ * @param list<string> $referenceColumns Referenced columns (defaults to same as $columns if empty)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function foreign_key(array $columns, string $referenceTable, array $referenceColumns = []) : ForeignKeyConstraint
+{
+    return ForeignKeyConstraint::create($columns, $referenceTable, $referenceColumns);
+}
+
+/**
+ * Create a CHECK constraint.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function check_constraint(Condition $condition) : CheckConstraint
+{
+    return CheckConstraint::create($condition);
+}
+
+/**
+ * Create a factory for building CREATE statements.
+ *
+ * Provides a unified entry point for all CREATE operations:
+ * - create()->table() - CREATE TABLE
+ * - create()->tableAs() - CREATE TABLE AS
+ * - create()->index() - CREATE INDEX
+ * - create()->view() - CREATE VIEW
+ * - create()->materializedView() - CREATE MATERIALIZED VIEW
+ * - create()->sequence() - CREATE SEQUENCE
+ * - create()->schema() - CREATE SCHEMA
+ * - create()->role() - CREATE ROLE
+ * - create()->function() - CREATE FUNCTION
+ * - create()->procedure() - CREATE PROCEDURE
+ * - create()->trigger() - CREATE TRIGGER
+ * - create()->rule() - CREATE RULE
+ * - create()->extension() - CREATE EXTENSION
+ * - create()->compositeType() - CREATE TYPE (composite)
+ * - create()->enumType() - CREATE TYPE (enum)
+ * - create()->rangeType() - CREATE TYPE (range)
+ * - create()->domain() - CREATE DOMAIN
+ *
+ * Example: create()->table('users')->columns(col_def('id', column_type_serial()))
+ * Example: create()->index('idx_email')->on('users')->columns('email')
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function create() : CreateFactory
+{
+    return new CreateFactory();
+}
+
+/**
+ * Create a factory for building DROP statements.
+ *
+ * Provides a unified entry point for all DROP operations:
+ * - drop()->table() - DROP TABLE
+ * - drop()->index() - DROP INDEX
+ * - drop()->view() - DROP VIEW
+ * - drop()->materializedView() - DROP MATERIALIZED VIEW
+ * - drop()->sequence() - DROP SEQUENCE
+ * - drop()->schema() - DROP SCHEMA
+ * - drop()->role() - DROP ROLE
+ * - drop()->function() - DROP FUNCTION
+ * - drop()->procedure() - DROP PROCEDURE
+ * - drop()->trigger() - DROP TRIGGER
+ * - drop()->rule() - DROP RULE
+ * - drop()->extension() - DROP EXTENSION
+ * - drop()->type() - DROP TYPE
+ * - drop()->domain() - DROP DOMAIN
+ * - drop()->owned() - DROP OWNED
+ *
+ * Example: drop()->table('users', 'orders')->ifExists()->cascade()
+ * Example: drop()->index('idx_email')->ifExists()
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function drop() : DropFactory
+{
+    return new DropFactory();
+}
+
+/**
+ * Create a factory for building ALTER statements.
+ *
+ * Provides a unified entry point for all ALTER operations:
+ * - alter()->table() - ALTER TABLE
+ * - alter()->index() - ALTER INDEX
+ * - alter()->view() - ALTER VIEW
+ * - alter()->materializedView() - ALTER MATERIALIZED VIEW
+ * - alter()->sequence() - ALTER SEQUENCE
+ * - alter()->schema() - ALTER SCHEMA
+ * - alter()->role() - ALTER ROLE
+ * - alter()->function() - ALTER FUNCTION
+ * - alter()->procedure() - ALTER PROCEDURE
+ * - alter()->trigger() - ALTER TRIGGER
+ * - alter()->extension() - ALTER EXTENSION
+ * - alter()->enumType() - ALTER TYPE (enum)
+ * - alter()->domain() - ALTER DOMAIN
+ *
+ * Rename operations are also under alter():
+ * - alter()->index('old')->renameTo('new')
+ * - alter()->view('old')->renameTo('new')
+ * - alter()->schema('old')->renameTo('new')
+ * - alter()->role('old')->renameTo('new')
+ * - alter()->trigger('old')->on('table')->renameTo('new')
+ *
+ * Example: alter()->table('users')->addColumn(col_def('email', column_type_text()))
+ * Example: alter()->sequence('user_id_seq')->restart(1000)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function alter() : AlterFactory
+{
+    return new AlterFactory();
+}
+
+/**
+ * Create a TRUNCATE TABLE builder.
+ *
+ * @param string ...$tables Table names to truncate
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function truncate_table(string ...$tables) : TruncateFinalStep
+{
+    return TruncateBuilder::create(...$tables);
+}
+
+/**
+ * Create a REFRESH MATERIALIZED VIEW builder.
+ *
+ * Example: refresh_materialized_view('user_stats')
+ * Produces: REFRESH MATERIALIZED VIEW user_stats
+ *
+ * Example: refresh_materialized_view('user_stats')->concurrently()->withData()
+ * Produces: REFRESH MATERIALIZED VIEW CONCURRENTLY user_stats WITH DATA
+ *
+ * @param string $name View name (may include schema as "schema.view")
+ * @param null|string $schema Schema name (optional, overrides parsed schema)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function refresh_materialized_view(string $name, ?string $schema = null) : RefreshMatViewOptionsStep
+{
+    return RefreshMaterializedViewBuilder::create($name, $schema);
+}
+
+/**
+ * Get a CASCADE referential action.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function ref_action_cascade() : ReferentialAction
+{
+    return ReferentialAction::CASCADE;
+}
+
+/**
+ * Get a RESTRICT referential action.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function ref_action_restrict() : ReferentialAction
+{
+    return ReferentialAction::RESTRICT;
+}
+
+/**
+ * Get a SET NULL referential action.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function ref_action_set_null() : ReferentialAction
+{
+    return ReferentialAction::SET_NULL;
+}
+
+/**
+ * Get a SET DEFAULT referential action.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function ref_action_set_default() : ReferentialAction
+{
+    return ReferentialAction::SET_DEFAULT;
+}
+
+/**
+ * Get a NO ACTION referential action.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function ref_action_no_action() : ReferentialAction
+{
+    return ReferentialAction::NO_ACTION;
+}
+
+/**
+ * Start building a REINDEX INDEX statement.
+ *
+ * Use chainable methods: ->concurrently(), ->verbose(), ->tablespace()
+ *
+ * Example: reindex_index('idx_users_email')->concurrently()
+ *
+ * @param string $name The index name (may include schema: schema.index)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function reindex_index(string $name) : ReindexFinalStep
+{
+    return ReindexBuilder::index($name);
+}
+
+/**
+ * Start building a REINDEX TABLE statement.
+ *
+ * Use chainable methods: ->concurrently(), ->verbose(), ->tablespace()
+ *
+ * Example: reindex_table('users')->concurrently()
+ *
+ * @param string $name The table name (may include schema: schema.table)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function reindex_table(string $name) : ReindexFinalStep
+{
+    return ReindexBuilder::table($name);
+}
+
+/**
+ * Start building a REINDEX SCHEMA statement.
+ *
+ * Use chainable methods: ->concurrently(), ->verbose(), ->tablespace()
+ *
+ * Example: reindex_schema('public')->concurrently()
+ *
+ * @param string $name The schema name
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function reindex_schema(string $name) : ReindexFinalStep
+{
+    return ReindexBuilder::schema($name);
+}
+
+/**
+ * Start building a REINDEX DATABASE statement.
+ *
+ * Use chainable methods: ->concurrently(), ->verbose(), ->tablespace()
+ *
+ * Example: reindex_database('mydb')->concurrently()
+ *
+ * @param string $name The database name
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function reindex_database(string $name) : ReindexFinalStep
+{
+    return ReindexBuilder::database($name);
+}
+
+/**
+ * Create an index column specification.
+ *
+ * Use chainable methods: ->asc(), ->desc(), ->nullsFirst(), ->nullsLast(), ->opclass(), ->collate()
+ *
+ * Example: index_col('email')->desc()->nullsLast()
+ *
+ * @param string $name The column name
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function index_col(string $name) : IndexColumn
+{
+    return IndexColumn::column($name);
+}
+
+/**
+ * Create an index column specification from an expression.
+ *
+ * Use chainable methods: ->asc(), ->desc(), ->nullsFirst(), ->nullsLast(), ->opclass(), ->collate()
+ *
+ * Example: index_expr(fn_call('lower', col('email')))->desc()
+ *
+ * @param Expression $expression The expression to index
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::SCHEMA)]
+function index_expr(Expression $expression) : IndexColumn
+{
+    return IndexColumn::expression($expression);
+}
+
+/**
+ * Get the BTREE index method.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function index_method_btree() : IndexMethod
+{
+    return IndexMethod::BTREE;
+}
+
+/**
+ * Get the HASH index method.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function index_method_hash() : IndexMethod
+{
+    return IndexMethod::HASH;
+}
+
+/**
+ * Get the GIST index method.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function index_method_gist() : IndexMethod
+{
+    return IndexMethod::GIST;
+}
+
+/**
+ * Get the SPGIST index method.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function index_method_spgist() : IndexMethod
+{
+    return IndexMethod::SPGIST;
+}
+
+/**
+ * Get the GIN index method.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function index_method_gin() : IndexMethod
+{
+    return IndexMethod::GIN;
+}
+
+/**
+ * Get the BRIN index method.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function index_method_brin() : IndexMethod
+{
+    return IndexMethod::BRIN;
+}
+
+/**
+ * Create a VACUUM builder.
+ *
+ * Example: vacuum()->table('users')
+ * Produces: VACUUM users
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function vacuum() : VacuumFinalStep
+{
+    return VacuumBuilder::create();
+}
+
+/**
+ * Create an ANALYZE builder.
+ *
+ * Example: analyze()->table('users')
+ * Produces: ANALYZE users
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function analyze() : AnalyzeFinalStep
+{
+    return AnalyzeBuilder::create();
+}
+
+/**
+ * Create an EXPLAIN builder for a query.
+ *
+ * Example: explain(select()->from('users'))
+ * Produces: EXPLAIN SELECT * FROM users
+ *
+ * @param DeleteBuilder|InsertBuilder|SelectFinalStep|UpdateBuilder $query Query to explain
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function explain(SelectFinalStep|InsertBuilder|UpdateBuilder|DeleteBuilder $query) : ExplainFinalStep
+{
+    return ExplainBuilder::create($query);
+}
+
+/**
+ * Create a LOCK TABLE builder.
+ *
+ * Example: lock_table('users', 'orders')->accessExclusive()
+ * Produces: LOCK TABLE users, orders IN ACCESS EXCLUSIVE MODE
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function lock_table(string ...$tables) : LockFinalStep
+{
+    return LockBuilder::create(...$tables);
+}
+
+/**
+ * Create a COMMENT ON builder.
+ *
+ * Example: comment(CommentTarget::TABLE, 'users')->is('User accounts table')
+ * Produces: COMMENT ON TABLE users IS 'User accounts table'
+ *
+ * @param CommentTarget $target Target type (TABLE, COLUMN, INDEX, etc.)
+ * @param string $name Target name (use 'table.column' for COLUMN targets)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function comment(CommentTarget $target, string $name) : CommentFinalStep
+{
+    return CommentBuilder::create($target, $name);
+}
+
+/**
+ * Create a CLUSTER builder.
+ *
+ * Example: cluster()->table('users')->using('idx_users_pkey')
+ * Produces: CLUSTER users USING idx_users_pkey
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function cluster() : ClusterFinalStep
+{
+    return ClusterBuilder::create();
+}
+
+/**
+ * Create a DISCARD builder.
+ *
+ * Example: discard(DiscardType::ALL)
+ * Produces: DISCARD ALL
+ *
+ * @param DiscardType $type Type of resources to discard (ALL, PLANS, SEQUENCES, TEMP)
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function discard(DiscardType $type) : DiscardFinalStep
+{
+    return DiscardBuilder::create($type);
+}
+
+/**
+ * Create a GRANT privileges builder.
+ *
+ * Example: grant(TablePrivilege::SELECT)->onTable('users')->to('app_user')
+ * Produces: GRANT SELECT ON users TO app_user
+ *
+ * Example: grant(TablePrivilege::ALL)->onAllTablesInSchema('public')->to('admin')
+ * Produces: GRANT ALL ON ALL TABLES IN SCHEMA public TO admin
+ *
+ * @param string|TablePrivilege ...$privileges The privileges to grant
+ *
+ * @return GrantOnStep Builder for grant options
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function grant(TablePrivilege|string ...$privileges) : GrantOnStep
+{
+    return GrantBuilder::create(...$privileges);
+}
+
+/**
+ * Create a GRANT role builder.
+ *
+ * Example: grant_role('admin')->to('user1')
+ * Produces: GRANT admin TO user1
+ *
+ * Example: grant_role('admin', 'developer')->to('user1')->withAdminOption()
+ * Produces: GRANT admin, developer TO user1 WITH ADMIN OPTION
+ *
+ * @param string ...$roles The roles to grant
+ *
+ * @return GrantRoleToStep Builder for grant role options
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function grant_role(string ...$roles) : GrantRoleToStep
+{
+    return GrantRoleBuilder::create(...$roles);
+}
+
+/**
+ * Create a REVOKE privileges builder.
+ *
+ * Example: revoke(TablePrivilege::SELECT)->onTable('users')->from('app_user')
+ * Produces: REVOKE SELECT ON users FROM app_user
+ *
+ * Example: revoke(TablePrivilege::ALL)->onTable('users')->from('app_user')->cascade()
+ * Produces: REVOKE ALL ON users FROM app_user CASCADE
+ *
+ * @param string|TablePrivilege ...$privileges The privileges to revoke
+ *
+ * @return RevokeOnStep Builder for revoke options
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function revoke(TablePrivilege|string ...$privileges) : RevokeOnStep
+{
+    return RevokeBuilder::create(...$privileges);
+}
+
+/**
+ * Create a REVOKE role builder.
+ *
+ * Example: revoke_role('admin')->from('user1')
+ * Produces: REVOKE admin FROM user1
+ *
+ * Example: revoke_role('admin')->from('user1')->cascade()
+ * Produces: REVOKE admin FROM user1 CASCADE
+ *
+ * @param string ...$roles The roles to revoke
+ *
+ * @return RevokeRoleFromStep Builder for revoke role options
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function revoke_role(string ...$roles) : RevokeRoleFromStep
+{
+    return RevokeRoleBuilder::create(...$roles);
+}
+
+/**
+ * Create a SET ROLE builder.
+ *
+ * Example: set_role('admin')
+ * Produces: SET ROLE admin
+ *
+ * @param string $role The role to set
+ *
+ * @return SetRoleFinalStep Builder for set role
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function set_role(string $role) : SetRoleFinalStep
+{
+    return SetRoleBuilder::create($role);
+}
+
+/**
+ * Create a RESET ROLE builder.
+ *
+ * Example: reset_role()
+ * Produces: RESET ROLE
+ *
+ * @return ResetRoleFinalStep Builder for reset role
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function reset_role() : ResetRoleFinalStep
+{
+    return ResetRoleBuilder::create();
+}
+
+/**
+ * Create a REASSIGN OWNED builder.
+ *
+ * Example: reassign_owned('old_role')->to('new_role')
+ * Produces: REASSIGN OWNED BY old_role TO new_role
+ *
+ * @param string ...$roles The roles whose owned objects should be reassigned
+ *
+ * @return ReassignOwnedToStep Builder for reassign owned options
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function reassign_owned(string ...$roles) : ReassignOwnedToStep
+{
+    return ReassignOwnedBuilder::create(...$roles);
+}
+
+/**
+ * Create a DROP OWNED builder.
+ *
+ * Example: drop_owned('role1')
+ * Produces: DROP OWNED BY role1
+ *
+ * Example: drop_owned('role1', 'role2')->cascade()
+ * Produces: DROP OWNED BY role1, role2 CASCADE
+ *
+ * @param string ...$roles The roles whose owned objects should be dropped
+ *
+ * @return DropOwnedFinalStep Builder for drop owned options
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function drop_owned(string ...$roles) : DropOwnedFinalStep
+{
+    return DropOwnedBuilder::create(...$roles);
+}
+
+/**
+ * Creates a new function argument for use in function/procedure definitions.
+ *
+ * Example: func_arg(column_type_integer())
+ * Example: func_arg(column_type_text())->named('username')
+ * Example: func_arg(column_type_integer())->named('count')->default('0')
+ * Example: func_arg(column_type_text())->out()
+ *
+ * @param ColumnType $type The PostgreSQL data type for the argument
+ *
+ * @return FunctionArgument Builder for function argument options
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function func_arg(ColumnType $type) : FunctionArgument
+{
+    return FunctionArgument::of($type);
+}
+
+/**
+ * Creates a CALL statement builder for invoking a procedure.
+ *
+ * Example: call('update_stats')->with(123)
+ * Produces: CALL update_stats(123)
+ *
+ * Example: call('process_data')->with('test', 42, true)
+ * Produces: CALL process_data('test', 42, true)
+ *
+ * @param string $procedure The name of the procedure to call
+ *
+ * @return CallFinalStep Builder for call statement options
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function call(string $procedure) : CallFinalStep
+{
+    return CallBuilder::create($procedure);
+}
+
+/**
+ * Creates a DO statement builder for executing an anonymous code block.
+ *
+ * Example: do_block('BEGIN RAISE NOTICE $$Hello World$$; END;')
+ * Produces: DO $$ BEGIN RAISE NOTICE $$Hello World$$; END; $$ LANGUAGE plpgsql
+ *
+ * Example: do_block('SELECT 1')->language('sql')
+ * Produces: DO $$ SELECT 1 $$ LANGUAGE sql
+ *
+ * @param string $code The anonymous code block to execute
+ *
+ * @return DoFinalStep Builder for DO statement options
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function do_block(string $code) : DoFinalStep
+{
+    return DoBuilder::create($code);
+}
+
+/**
+ * Creates a type attribute for composite types.
+ *
+ * Example: type_attr('name', column_type_text())
+ * Produces: name text
+ *
+ * Example: type_attr('description', column_type_text())->collate('en_US')
+ * Produces: description text COLLATE "en_US"
+ *
+ * @param string $name The attribute name
+ * @param ColumnType $type The attribute type
+ *
+ * @return TypeAttribute Type attribute value object
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function type_attr(string $name, ColumnType $type) : TypeAttribute
+{
+    return TypeAttribute::of($name, $type);
+}
+
+/**
+ * Create an integer data type (PostgreSQL int4).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_integer() : ColumnType
+{
+    return ColumnType::integer();
+}
+
+/**
+ * Create a smallint data type (PostgreSQL int2).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_smallint() : ColumnType
+{
+    return ColumnType::smallint();
+}
+
+/**
+ * Create a bigint data type (PostgreSQL int8).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_bigint() : ColumnType
+{
+    return ColumnType::bigint();
+}
+
+/**
+ * Create a boolean data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_boolean() : ColumnType
+{
+    return ColumnType::boolean();
+}
+
+/**
+ * Create a text data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_text() : ColumnType
+{
+    return ColumnType::text();
+}
+
+/**
+ * Create a varchar data type with length constraint.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_varchar(int $length) : ColumnType
+{
+    return ColumnType::varchar($length);
+}
+
+/**
+ * Create a char data type with length constraint.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_char(int $length) : ColumnType
+{
+    return ColumnType::char($length);
+}
+
+/**
+ * Create a numeric data type with optional precision and scale.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_numeric(?int $precision = null, ?int $scale = null) : ColumnType
+{
+    return ColumnType::numeric($precision, $scale);
+}
+
+/**
+ * Create a decimal data type with optional precision and scale.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_decimal(?int $precision = null, ?int $scale = null) : ColumnType
+{
+    return ColumnType::decimal($precision, $scale);
+}
+
+/**
+ * Create a real data type (PostgreSQL float4).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_real() : ColumnType
+{
+    return ColumnType::real();
+}
+
+/**
+ * Create a double precision data type (PostgreSQL float8).
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_double_precision() : ColumnType
+{
+    return ColumnType::doublePrecision();
+}
+
+/**
+ * Create a date data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_date() : ColumnType
+{
+    return ColumnType::date();
+}
+
+/**
+ * Create a time data type with optional precision.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_time(?int $precision = null) : ColumnType
+{
+    return ColumnType::time($precision);
+}
+
+/**
+ * Create a timestamp data type with optional precision.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_timestamp(?int $precision = null) : ColumnType
+{
+    return ColumnType::timestamp($precision);
+}
+
+/**
+ * Create a timestamp with time zone data type with optional precision.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_timestamptz(?int $precision = null) : ColumnType
+{
+    return ColumnType::timestamptz($precision);
+}
+
+/**
+ * Create an interval data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_interval() : ColumnType
+{
+    return ColumnType::interval();
+}
+
+/**
+ * Create a UUID data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_uuid() : ColumnType
+{
+    return ColumnType::uuid();
+}
+
+/**
+ * Create a JSON data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_json() : ColumnType
+{
+    return ColumnType::json();
+}
+
+/**
+ * Create a JSONB data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_jsonb() : ColumnType
+{
+    return ColumnType::jsonb();
+}
+
+/**
+ * Create a bytea data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_bytea() : ColumnType
+{
+    return ColumnType::bytea();
+}
+
+/**
+ * Create an inet data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_inet() : ColumnType
+{
+    return ColumnType::inet();
+}
+
+/**
+ * Create a cidr data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_cidr() : ColumnType
+{
+    return ColumnType::cidr();
+}
+
+/**
+ * Create a macaddr data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_macaddr() : ColumnType
+{
+    return ColumnType::macaddr();
+}
+
+/**
+ * Create a serial data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_serial() : ColumnType
+{
+    return ColumnType::serial();
+}
+
+/**
+ * Create a smallserial data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_smallserial() : ColumnType
+{
+    return ColumnType::smallserial();
+}
+
+/**
+ * Create a bigserial data type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_bigserial() : ColumnType
+{
+    return ColumnType::bigserial();
+}
+
+/**
+ * Create an array data type from an element type.
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_array(ColumnType $elementType) : ColumnType
+{
+    return ColumnType::array($elementType);
+}
+
+/**
+ * Create a custom data type.
+ *
+ * @param string $typeName Type name
+ * @param null|string $schema Optional schema name
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_custom(string $typeName, ?string $schema = null) : ColumnType
+{
+    return ColumnType::custom($typeName, $schema);
+}
+
+/**
+ * Parse a PostgreSQL type string into a ColumnType.
+ *
+ * Handles all PostgreSQL type syntax including precision, arrays, and schema-qualified types.
+ *
+ * @param string $typeName PostgreSQL type string (e.g., 'integer', 'character varying(255)', 'text[]')
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function column_type_from_string(string $typeName) : ColumnType
+{
+    return (new ColumnTypeParser())->parse($typeName);
+}
+
+// ValueType DSL functions - Scalar types
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_text() : ValueType
+{
+    return ValueType::TEXT;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_varchar() : ValueType
+{
+    return ValueType::VARCHAR;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_char() : ValueType
+{
+    return ValueType::CHAR;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_bpchar() : ValueType
+{
+    return ValueType::BPCHAR;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_int2() : ValueType
+{
+    return ValueType::INT2;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_smallint() : ValueType
+{
+    return ValueType::INT2;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_int4() : ValueType
+{
+    return ValueType::INT4;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_integer() : ValueType
+{
+    return ValueType::INT4;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_int8() : ValueType
+{
+    return ValueType::INT8;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_bigint() : ValueType
+{
+    return ValueType::INT8;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_float4() : ValueType
+{
+    return ValueType::FLOAT4;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_real() : ValueType
+{
+    return ValueType::FLOAT4;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_float8() : ValueType
+{
+    return ValueType::FLOAT8;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_double() : ValueType
+{
+    return ValueType::FLOAT8;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_numeric() : ValueType
+{
+    return ValueType::NUMERIC;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_money() : ValueType
+{
+    return ValueType::MONEY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_bool() : ValueType
+{
+    return ValueType::BOOL;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_boolean() : ValueType
+{
+    return ValueType::BOOL;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_bytea() : ValueType
+{
+    return ValueType::BYTEA;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_bit() : ValueType
+{
+    return ValueType::BIT;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_varbit() : ValueType
+{
+    return ValueType::VARBIT;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_date() : ValueType
+{
+    return ValueType::DATE;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_time() : ValueType
+{
+    return ValueType::TIME;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_timetz() : ValueType
+{
+    return ValueType::TIMETZ;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_timestamp() : ValueType
+{
+    return ValueType::TIMESTAMP;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_timestamptz() : ValueType
+{
+    return ValueType::TIMESTAMPTZ;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_interval() : ValueType
+{
+    return ValueType::INTERVAL;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_json() : ValueType
+{
+    return ValueType::JSON;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_jsonb() : ValueType
+{
+    return ValueType::JSONB;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_uuid() : ValueType
+{
+    return ValueType::UUID;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_inet() : ValueType
+{
+    return ValueType::INET;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_cidr() : ValueType
+{
+    return ValueType::CIDR;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_macaddr() : ValueType
+{
+    return ValueType::MACADDR;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_macaddr8() : ValueType
+{
+    return ValueType::MACADDR8;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_xml() : ValueType
+{
+    return ValueType::XML;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_oid() : ValueType
+{
+    return ValueType::OID;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_text_array() : ValueType
+{
+    return ValueType::TEXT_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_varchar_array() : ValueType
+{
+    return ValueType::VARCHAR_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_int2_array() : ValueType
+{
+    return ValueType::INT2_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_int4_array() : ValueType
+{
+    return ValueType::INT4_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_int8_array() : ValueType
+{
+    return ValueType::INT8_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_float4_array() : ValueType
+{
+    return ValueType::FLOAT4_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_float8_array() : ValueType
+{
+    return ValueType::FLOAT8_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_bool_array() : ValueType
+{
+    return ValueType::BOOL_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_uuid_array() : ValueType
+{
+    return ValueType::UUID_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_json_array() : ValueType
+{
+    return ValueType::JSON_ARRAY;
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function value_type_jsonb_array() : ValueType
+{
+    return ValueType::JSONB_ARRAY;
+}
+
+/**
+ * @param list<SchemaTable> $tables
+ * @param list<SchemaSequence> $sequences
+ * @param list<SchemaView> $views
+ * @param list<SchemaMaterializedView> $materializedViews
+ * @param list<SchemaFunction> $functions
+ * @param list<SchemaProcedure> $procedures
+ * @param list<SchemaDomain> $domains
+ * @param list<SchemaExtension> $extensions
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema(
+    string $name,
+    array $tables = [],
+    array $sequences = [],
+    array $views = [],
+    array $materializedViews = [],
+    array $functions = [],
+    array $procedures = [],
+    array $domains = [],
+    array $extensions = [],
+) : DatabaseSchema {
+    return new DatabaseSchema($name, $tables, $sequences, $views, $materializedViews, $functions, $procedures, $domains, $extensions);
+}
+
+/**
+ * @param non-empty-list<SchemaColumn> $columns
+ * @param list<SchemaIndex> $indexes
+ * @param list<SchemaForeignKey> $foreignKeys
+ * @param list<SchemaUniqueConstraint> $uniqueConstraints
+ * @param list<SchemaCheckConstraint> $checkConstraints
+ * @param list<SchemaExcludeConstraint> $excludeConstraints
+ * @param list<SchemaTrigger> $triggers
+ * @param list<string> $partitionColumns
+ * @param list<string> $inherits
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_table(
+    string $name,
+    array $columns,
+    ?SchemaPrimaryKey $primaryKey = null,
+    array $indexes = [],
+    array $foreignKeys = [],
+    array $uniqueConstraints = [],
+    array $checkConstraints = [],
+    array $excludeConstraints = [],
+    array $triggers = [],
+    string $schema = 'public',
+    bool $unlogged = false,
+    ?PartitionStrategy $partitionStrategy = null,
+    array $partitionColumns = [],
+    array $inherits = [],
+    ?string $tablespace = null,
+) : SchemaTable {
+    return new SchemaTable($schema, $name, $columns, $primaryKey, $indexes, $foreignKeys, $uniqueConstraints, $checkConstraints, $excludeConstraints, $triggers, $unlogged, $partitionStrategy, $partitionColumns, $inherits, $tablespace);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column(
+    string $name,
+    ColumnType $type,
+    bool $nullable = true,
+    ?string $default = null,
+    bool $isIdentity = false,
+    ?IdentityGeneration $identityGeneration = null,
+    bool $isGenerated = false,
+    ?string $generationExpression = null,
+    ?int $ordinalPosition = null,
+) : SchemaColumn {
+    return new SchemaColumn($name, $type, $nullable, $default, $isIdentity, $identityGeneration, $isGenerated, $generationExpression, $ordinalPosition);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_integer(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::integer(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_smallint(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::smallint(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_bigint(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::bigint(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_serial(string $name) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::serial(), false);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_small_serial(string $name) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::smallserial(), false);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_big_serial(string $name) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::bigserial(), false);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_boolean(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::boolean(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_text(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::text(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_varchar(string $name, int $length, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::varchar($length), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_char(string $name, int $length, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::char($length), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_numeric(string $name, ?int $precision = null, ?int $scale = null, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::numeric($precision, $scale), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_real(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::real(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_double_precision(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::doublePrecision(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_date(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::date(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_time(string $name, ?int $precision = null, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::time($precision), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_timestamp(string $name, ?int $precision = null, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::timestamp($precision), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_timestamp_tz(string $name, ?int $precision = null, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::timestamptz($precision), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_interval(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::interval(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_uuid(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::uuid(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_json(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::json(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_jsonb(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::jsonb(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_bytea(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::bytea(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_inet(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::inet(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_cidr(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::cidr(), $nullable, $default);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_column_macaddr(string $name, bool $nullable = true, ?string $default = null) : SchemaColumn
+{
+    return new SchemaColumn($name, ColumnType::macaddr(), $nullable, $default);
+}
+
+/**
+ * @param non-empty-list<string> $columns
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_primary_key(array $columns, ?string $name = null) : SchemaPrimaryKey
+{
+    return new SchemaPrimaryKey($columns, $name);
+}
+
+/**
+ * @param non-empty-list<string> $columns
+ * @param non-empty-list<string> $referenceColumns
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_foreign_key(
+    array $columns,
+    string $referenceTable,
+    array $referenceColumns,
+    ?string $name = null,
+    string $referenceSchema = 'public',
+    ReferentialAction $onUpdate = ReferentialAction::NO_ACTION,
+    ReferentialAction $onDelete = ReferentialAction::NO_ACTION,
+    bool $deferrable = false,
+    bool $initiallyDeferred = false,
+) : SchemaForeignKey {
+    return new SchemaForeignKey($name, $columns, $referenceSchema, $referenceTable, $referenceColumns, $onUpdate, $onDelete, $deferrable, $initiallyDeferred);
+}
+
+/**
+ * @param non-empty-list<string> $columns
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_unique(array $columns, ?string $name = null, bool $nullsNotDistinct = false) : SchemaUniqueConstraint
+{
+    return new SchemaUniqueConstraint($columns, $name, $nullsNotDistinct);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_check(string $expression, ?string $name = null, bool $noInherit = false) : SchemaCheckConstraint
+{
+    return new SchemaCheckConstraint($expression, $name, $noInherit);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_exclude(string $definition, ?string $name = null) : SchemaExcludeConstraint
+{
+    return new SchemaExcludeConstraint($definition, $name);
+}
+
+/**
+ * @param non-empty-list<string> $columns
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_index(
+    string $name,
+    array $columns,
+    bool $unique = false,
+    SchemaIndexMethod $method = SchemaIndexMethod::BTREE,
+    bool $primary = false,
+    ?string $predicate = null,
+) : SchemaIndex {
+    return new SchemaIndex($name, $columns, $unique, $method, $primary, $predicate);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_sequence(
+    string $name,
+    string $dataType = 'bigint',
+    int|string $startValue = 1,
+    int|string $minValue = 1,
+    int|string|null $maxValue = null,
+    int|string $incrementBy = 1,
+    bool $cycle = false,
+    int|string $cacheValue = 1,
+    ?string $ownedByTable = null,
+    ?string $ownedByColumn = null,
+) : SchemaSequence {
+    return new SchemaSequence($name, $dataType, $startValue, $minValue, $maxValue, $incrementBy, $cycle, $cacheValue, $ownedByTable, $ownedByColumn);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_view(string $name, string $definition, bool $isUpdatable = false) : SchemaView
+{
+    return new SchemaView($name, $definition, $isUpdatable);
+}
+
+/**
+ * @param list<SchemaIndex> $indexes
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_materialized_view(string $name, string $definition, array $indexes = []) : SchemaMaterializedView
+{
+    return new SchemaMaterializedView($name, $definition, $indexes);
+}
+
+/**
+ * @param list<string> $argumentTypes
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_function(
+    string $name,
+    string $returnType,
+    array $argumentTypes = [],
+    string $language = 'sql',
+    ?string $definition = null,
+    bool $isStrict = false,
+    ?SchemaFunctionVolatility $volatility = null,
+) : SchemaFunction {
+    return new SchemaFunction($name, $returnType, $argumentTypes, $language, $definition, $isStrict, $volatility);
+}
+
+/**
+ * @param list<string> $argumentTypes
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_procedure(
+    string $name,
+    array $argumentTypes = [],
+    string $language = 'sql',
+    ?string $definition = null,
+) : SchemaProcedure {
+    return new SchemaProcedure($name, $argumentTypes, $language, $definition);
+}
+
+/**
+ * @param non-empty-list<TriggerEvent> $events
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_trigger(
+    string $name,
+    string $tableName,
+    TriggerTiming $timing,
+    array $events,
+    string $functionName,
+    bool $forEachRow = false,
+    ?string $whenCondition = null,
+) : SchemaTrigger {
+    return new SchemaTrigger($name, $tableName, $timing, $events, $functionName, $forEachRow, $whenCondition);
+}
+
+/**
+ * @param list<SchemaCheckConstraint> $checkConstraints
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_domain(
+    string $name,
+    ColumnType $baseType,
+    bool $nullable = true,
+    ?string $default = null,
+    array $checkConstraints = [],
+) : SchemaDomain {
+    return new SchemaDomain($name, $baseType, $nullable, $default, $checkConstraints);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function schema_extension(string $name, ?string $version = null) : SchemaExtension
+{
+    return new SchemaExtension($name, $version);
+}
+
+/**
+ * @param ?list<string> $schemaNames
+ * @param list<string> $excludeTables
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function client_catalog_provider(Client\Client $client, ?array $schemaNames = null, array $excludeTables = []) : CatalogProvider
+{
+    return new PgCatalogProvider($client, $schemaNames, $excludeTables);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function manual_catalog_provider(Catalog $catalog) : CatalogProvider
+{
+    return new ManualCatalogProvider($catalog);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function chain_catalog_provider(CatalogProvider ...$providers) : ChainCatalogProvider
+{
+    return new ChainCatalogProvider(...$providers);
+}
+
+/**
+ * @param null|ExecutionOrderStrategy<\Flow\PostgreSql\Schema\Table> $tableOrderStrategy
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function catalog_comparator(?RenameStrategy $renameStrategy = null, ?ViewDependencyResolver $viewDependencyResolver = null, ?ExecutionOrderStrategy $tableOrderStrategy = null) : CatalogComparator
+{
+    return CatalogComparator::create($renameStrategy, $viewDependencyResolver, $tableOrderStrategy);
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function ast_view_dependency_resolver() : AstViewDependencyResolver
+{
+    return new AstViewDependencyResolver(new Parser());
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function noop_view_dependency_resolver() : NoopViewDependencyResolver
+{
+    return new NoopViewDependencyResolver();
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function foreign_key_dependency_order() : ForeignKeyDependencyOrder
+{
+    return new ForeignKeyDependencyOrder();
+}
+
+/**
+ * @return NoExecutionOrder<mixed>
+ */
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function no_execution_order() : NoExecutionOrder
+{
+    return new NoExecutionOrder();
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function view_dependency_order() : ViewDependencyOrder
+{
+    return new ViewDependencyOrder(new Parser());
+}
+
+#[DocumentationDSL(module: Module::PG_QUERY, type: DSLType::HELPER)]
+function materialized_view_dependency_order() : MaterializedViewDependencyOrder
+{
+    return new MaterializedViewDependencyOrder(new Parser());
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Configuration.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Configuration.php
new file mode 100644
index 0000000000..32aa78500e
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Configuration.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+use Flow\PostgreSql\Client\Client;
+use Flow\PostgreSql\Schema\CatalogProvider;
+
+final readonly class Configuration
+{
+    public function __construct(
+        public Client $client,
+        public CatalogProvider $targetCatalogProvider,
+        public string $migrationsDirectory,
+        public string $migrationsNamespace,
+        public string $tableName = 'flow_migrations',
+        public string $tableSchema = 'public',
+        public string $migrationFileName = 'migration.php',
+        public string $rollbackFileName = 'rollback.php',
+        public bool $allOrNothing = false,
+        public bool $generateRollback = true,
+    ) {
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/DSL/functions.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/DSL/functions.php
new file mode 100644
index 0000000000..940be73bf5
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/DSL/functions.php
@@ -0,0 +1,5 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\DSL;
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Direction.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Direction.php
new file mode 100644
index 0000000000..3c07f14995
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Direction.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+enum Direction : string
+{
+    case DOWN = 'down';
+    case UP = 'up';
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Exception/MigrationException.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Exception/MigrationException.php
new file mode 100644
index 0000000000..f85407d900
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Exception/MigrationException.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Exception;
+
+use Flow\PostgreSql\Migrations\Version;
+
+class MigrationException extends \RuntimeException
+{
+    public static function configurationFileNotFound(string $fileName) : self
+    {
+        return new self(\sprintf('Configuration file "%s" not found. Create a %s file or specify the path explicitly.', $fileName, $fileName));
+    }
+
+    public static function invalidConfigurationFile(string $filePath) : self
+    {
+        return new self(\sprintf('Configuration file "%s" must return an instance of Configuration.', $filePath));
+    }
+
+    public static function invalidDataMigration(string $filePath) : self
+    {
+        return new self(\sprintf('Data migration file "%s" must return an instance of Migration.', $filePath));
+    }
+
+    public static function invalidRollback(string $filePath) : self
+    {
+        return new self(\sprintf('Rollback file "%s" must return an instance of Rollback.', $filePath));
+    }
+
+    public static function invalidVersionFormat(string $version) : self
+    {
+        return new self(\sprintf('Invalid migration version format: "%s". Expected non-empty alphanumeric string (max 255 chars).', $version));
+    }
+
+    public static function irreversibleMigration(Version $version) : self
+    {
+        return new self(\sprintf('Migration "%s" is irreversible and cannot be rolled back.', $version));
+    }
+
+    public static function migrationFailed(Version $version, \Throwable $previous) : self
+    {
+        return new self(\sprintf('Migration "%s" failed: %s', $version, $previous->getMessage()), 0, $previous);
+    }
+
+    public static function missingMigrationFile(string $directory) : self
+    {
+        return new self(\sprintf('Migration directory "%s" must contain migration.php.', $directory));
+    }
+
+    public static function noChangesDetected() : self
+    {
+        return new self('No changes detected between source and target catalog.');
+    }
+
+    public static function versionNotFound(Version $version) : self
+    {
+        return new self(\sprintf('Migration version "%s" not found.', $version));
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/ExecutedMigration.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/ExecutedMigration.php
new file mode 100644
index 0000000000..159d3b498a
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/ExecutedMigration.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+final readonly class ExecutedMigration
+{
+    public function __construct(
+        public Version $version,
+        public \DateTimeImmutable $executedAt,
+        public ?int $executionTimeMs,
+    ) {
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Executor/DefaultMigrationExecutor.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Executor/DefaultMigrationExecutor.php
new file mode 100644
index 0000000000..8b4b3de4b5
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Executor/DefaultMigrationExecutor.php
@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Executor;
+
+use Flow\PostgreSql\Migrations\{Direction, MigrationContext, MigrationPlan};
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+
+final readonly class DefaultMigrationExecutor implements MigrationExecutor
+{
+    public function execute(MigrationPlan $plan, MigrationContext $context) : ExecutionResult
+    {
+        $start = \hrtime(true);
+
+        try {
+            match ($plan->direction) {
+                Direction::UP => $this->executeUp($plan, $context),
+                Direction::DOWN => $this->executeDown($plan, $context),
+            };
+        } catch (\Throwable $e) {
+            return new ExecutionResult(
+                $plan->version,
+                $plan->direction,
+                (int) ((\hrtime(true) - $start) / 1_000_000),
+                false,
+                $e,
+            );
+        }
+
+        return new ExecutionResult(
+            $plan->version,
+            $plan->direction,
+            (int) ((\hrtime(true) - $start) / 1_000_000),
+            false,
+            null,
+        );
+    }
+
+    private function executeDown(MigrationPlan $plan, MigrationContext $context) : void
+    {
+        if ($plan->rollback === null) {
+            throw MigrationException::irreversibleMigration($plan->version);
+        }
+
+        if ($plan->rollback->transactional()) {
+            $context->client->transaction(static function () use ($plan, $context) : void {
+                $plan->rollback->rollback($context);
+            });
+
+            return;
+        }
+
+        $plan->rollback->rollback($context);
+    }
+
+    private function executeUp(MigrationPlan $plan, MigrationContext $context) : void
+    {
+        if ($plan->migration->transactional()) {
+            $context->client->transaction(static function () use ($plan, $context) : void {
+                $plan->migration->migrate($context);
+            });
+
+            return;
+        }
+
+        $plan->migration->migrate($context);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Executor/ExecutionResult.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Executor/ExecutionResult.php
new file mode 100644
index 0000000000..d8bf4fdf18
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Executor/ExecutionResult.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Executor;
+
+use Flow\PostgreSql\Migrations\{Direction, Version};
+
+final readonly class ExecutionResult
+{
+    public function __construct(
+        public Version $version,
+        public Direction $direction,
+        public int $executionTimeMs,
+        public bool $skipped,
+        public ?\Throwable $error,
+    ) {
+    }
+
+    public function isSuccessful() : bool
+    {
+        return $this->error === null && !$this->skipped;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Executor/MigrationExecutor.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Executor/MigrationExecutor.php
new file mode 100644
index 0000000000..06883e8ccb
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Executor/MigrationExecutor.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Executor;
+
+use Flow\PostgreSql\Migrations\{MigrationContext, MigrationPlan};
+
+interface MigrationExecutor
+{
+    public function execute(MigrationPlan $plan, MigrationContext $context) : ExecutionResult;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Generator/DiffMigrationGenerator.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Generator/DiffMigrationGenerator.php
new file mode 100644
index 0000000000..79043f6429
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Generator/DiffMigrationGenerator.php
@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Generator;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Version;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\{Catalog, CatalogProvider};
+use Flow\PostgreSql\Schema\Diff\CatalogComparator;
+
+final readonly class DiffMigrationGenerator
+{
+    public function __construct(
+        private CatalogProvider $sourceCatalog,
+        private CatalogProvider $targetCatalog,
+        private CatalogComparator $comparator,
+        private MigrationGenerator $generator,
+        private bool $generateRollback = true,
+    ) {
+    }
+
+    public function generate(?string $name = null, bool $allowEmpty = false, bool $fromEmptySchema = false) : Version
+    {
+        $source = $fromEmptySchema ? new Catalog([]) : $this->sourceCatalog->get();
+        $target = $this->targetCatalog->get();
+
+        $diff = $this->comparator->compare($source, $target);
+
+        if ($diff->isEmpty() && !$allowEmpty) {
+            throw MigrationException::noChangesDetected();
+        }
+
+        $upSql = \array_map(
+            static fn (Sql $query) => $query->toSql(),
+            $diff->generate(),
+        );
+
+        $downSql = null;
+
+        if ($this->generateRollback) {
+            $downSql = \array_map(
+                static fn (Sql $query) => $query->toSql(),
+                $this->comparator->compare($target, $this->sourceCatalog->get())->generate(),
+            );
+        }
+
+        return $this->generator->generateSchemaMigration($name, $upSql, $downSql);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Generator/MigrationGenerator.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Generator/MigrationGenerator.php
new file mode 100644
index 0000000000..a7846498db
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Generator/MigrationGenerator.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Generator;
+
+use Flow\PostgreSql\Migrations\Version;
+
+interface MigrationGenerator
+{
+    public function generateDataMigration(?string $name = null) : Version;
+
+    /**
+     * @param list<string> $upSql
+     * @param ?list<string> $downSql
+     */
+    public function generateSchemaMigration(?string $name, array $upSql, ?array $downSql = null) : Version;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Migration.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Migration.php
new file mode 100644
index 0000000000..cb8a5ee4dc
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Migration.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+interface Migration
+{
+    public function migrate(MigrationContext $context) : void;
+
+    public function transactional() : bool;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationContext.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationContext.php
new file mode 100644
index 0000000000..29c87ea8d8
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationContext.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+use Flow\PostgreSql\Client\Client;
+
+final readonly class MigrationContext
+{
+    public function __construct(
+        public Client $client,
+    ) {
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationPlan.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationPlan.php
new file mode 100644
index 0000000000..c9ba6dff5f
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationPlan.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+final readonly class MigrationPlan
+{
+    public function __construct(
+        public Version $version,
+        public Migration $migration,
+        public ?Rollback $rollback,
+        public Direction $direction,
+    ) {
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationPlanList.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationPlanList.php
new file mode 100644
index 0000000000..ca63fd409f
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationPlanList.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+/**
+ * @implements \IteratorAggregate<int, MigrationPlan>
+ */
+final readonly class MigrationPlanList implements \Countable, \IteratorAggregate
+{
+    /**
+     * @var list<MigrationPlan>
+     */
+    private array $plans;
+
+    public function __construct(MigrationPlan ...$plans)
+    {
+        $this->plans = \array_values($plans);
+    }
+
+    public function count() : int
+    {
+        return \count($this->plans);
+    }
+
+    /**
+     * @return \ArrayIterator<int, MigrationPlan>
+     */
+    public function getIterator() : \ArrayIterator
+    {
+        return new \ArrayIterator($this->plans);
+    }
+
+    public function isEmpty() : bool
+    {
+        return $this->plans === [];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationState.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationState.php
new file mode 100644
index 0000000000..53f2064668
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationState.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+enum MigrationState : string
+{
+    case EXECUTED = 'executed';
+    case PENDING = 'pending';
+    case UNAVAILABLE = 'unavailable';
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationStatus.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationStatus.php
new file mode 100644
index 0000000000..43983169cd
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationStatus.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+final readonly class MigrationStatus
+{
+    public function __construct(
+        public Version $version,
+        public string $name,
+        public MigrationState $state,
+        public ?\DateTimeImmutable $executedAt,
+    ) {
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationStatusList.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationStatusList.php
new file mode 100644
index 0000000000..431ae6a527
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationStatusList.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+/**
+ * @implements \IteratorAggregate<int, MigrationStatus>
+ */
+final readonly class MigrationStatusList implements \Countable, \IteratorAggregate
+{
+    /**
+     * @var list<MigrationStatus>
+     */
+    private array $statuses;
+
+    public function __construct(MigrationStatus ...$statuses)
+    {
+        $this->statuses = \array_values($statuses);
+    }
+
+    public function count() : int
+    {
+        return \count($this->statuses);
+    }
+
+    public function executed() : self
+    {
+        return new self(...\array_filter(
+            $this->statuses,
+            static fn (MigrationStatus $s) : bool => $s->state === MigrationState::EXECUTED,
+        ));
+    }
+
+    /**
+     * @return \ArrayIterator<int, MigrationStatus>
+     */
+    public function getIterator() : \ArrayIterator
+    {
+        return new \ArrayIterator($this->statuses);
+    }
+
+    public function isEmpty() : bool
+    {
+        return $this->statuses === [];
+    }
+
+    public function pending() : self
+    {
+        return new self(...\array_filter(
+            $this->statuses,
+            static fn (MigrationStatus $s) : bool => $s->state === MigrationState::PENDING,
+        ));
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationsFactory.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationsFactory.php
new file mode 100644
index 0000000000..ea2344af02
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/MigrationsFactory.php
@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+use function Flow\PostgreSql\DSL\{catalog_comparator, client_catalog_provider};
+
+use Flow\PostgreSql\Migrations\Executor\{DefaultMigrationExecutor, MigrationExecutor};
+use Flow\PostgreSql\Migrations\Generator\{DiffMigrationGenerator, MigrationGenerator};
+use Flow\PostgreSql\Migrations\Repository\MigrationRepository;
+use Flow\PostgreSql\Migrations\Store\{MigrationStore, PostgreSqlMigrationStore};
+
+final readonly class MigrationsFactory
+{
+    public function __construct(
+        private Configuration $configuration,
+        private MigrationRepository $repository,
+    ) {
+    }
+
+    public function createDiffGenerator(MigrationGenerator $generator) : DiffMigrationGenerator
+    {
+        return new DiffMigrationGenerator(
+            client_catalog_provider($this->configuration->client, excludeTables: [$this->configuration->tableName]),
+            $this->configuration->targetCatalogProvider,
+            catalog_comparator(),
+            $generator,
+            $this->configuration->generateRollback,
+        );
+    }
+
+    public function createExecutor() : MigrationExecutor
+    {
+        return new DefaultMigrationExecutor();
+    }
+
+    public function createMigrator() : Migrator
+    {
+        return new Migrator(
+            $this->repository,
+            $this->createStore(),
+            $this->createExecutor(),
+            $this->configuration->client,
+            $this->configuration,
+        );
+    }
+
+    public function createStore() : MigrationStore
+    {
+        return new PostgreSqlMigrationStore($this->configuration->client, $this->configuration);
+    }
+
+    public function createVersionResolver() : VersionResolver
+    {
+        return new VersionResolver(
+            $this->repository,
+            $this->createStore(),
+        );
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Migrator.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Migrator.php
new file mode 100644
index 0000000000..661d2754fc
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Migrator.php
@@ -0,0 +1,231 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+use Flow\PostgreSql\Client\Client;
+use Flow\PostgreSql\Migrations\Executor\{ExecutionResult, MigrationExecutor};
+use Flow\PostgreSql\Migrations\Repository\MigrationRepository;
+use Flow\PostgreSql\Migrations\Store\MigrationStore;
+
+final readonly class Migrator
+{
+    public function __construct(
+        private MigrationRepository $repository,
+        private MigrationStore $store,
+        private MigrationExecutor $executor,
+        private Client $client,
+        private Configuration $configuration,
+    ) {
+    }
+
+    public function executeVersion(Version $version, Direction $direction, bool $dryRun = false) : ExecutionResult
+    {
+        $this->store->initialize();
+
+        $available = $this->repository->get($version);
+        $plan = new MigrationPlan($available->version, $available->migration, $available->rollback, $direction);
+        $context = new MigrationContext($this->client);
+
+        if ($dryRun) {
+            $this->client->beginTransaction();
+        }
+
+        $result = $this->executor->execute($plan, $context);
+
+        if ($dryRun) {
+            $this->client->rollBack();
+
+            return $result;
+        }
+
+        if ($result->isSuccessful()) {
+            match ($direction) {
+                Direction::UP => $this->store->complete($result->version, $result->executionTimeMs),
+                Direction::DOWN => $this->store->remove($result->version),
+            };
+        }
+
+        return $result;
+    }
+
+    /**
+     * @return list<ExecutionResult>
+     */
+    public function migrate(?Version $to = null, bool $dryRun = false, ?bool $allOrNothing = null) : array
+    {
+        $this->store->initialize();
+
+        $available = $this->repository->all();
+        $executed = $this->store->executedMigrations();
+        $latestExecuted = $executed->latest();
+
+        if ($available->isEmpty() && $to === null) {
+            return [];
+        }
+
+        $target = $to ?? $available->last()?->version;
+
+        if ($target === null) {
+            return [];
+        }
+
+        if ($latestExecuted !== null && $latestExecuted->version->equals($target)) {
+            return [];
+        }
+
+        $plans = [];
+
+        if ($latestExecuted === null || $target->isAfter($latestExecuted->version)) {
+            $pending = $latestExecuted === null
+                ? $available->upTo($target)
+                : $available->after($latestExecuted->version)->upTo($target);
+
+            foreach ($pending as $migration) {
+                $plans[] = new MigrationPlan($migration->version, $migration->migration, $migration->rollback, Direction::UP);
+            }
+        } elseif ($latestExecuted->version->isAfter($target)) {
+            $toRollback = [];
+
+            foreach ($executed as $em) {
+                if ($em->version->isAfter($target)) {
+                    $toRollback[] = $em;
+                }
+            }
+
+            $toRollback = \array_reverse($toRollback);
+
+            foreach ($toRollback as $em) {
+                $migration = $this->repository->get($em->version);
+                $plans[] = new MigrationPlan($migration->version, $migration->migration, $migration->rollback, Direction::DOWN);
+            }
+        }
+
+        if ($plans === []) {
+            return [];
+        }
+
+        if ($dryRun) {
+            return $this->executeWithDryRun($plans);
+        }
+
+        if ($allOrNothing ?? $this->configuration->allOrNothing) {
+            return $this->executeAllOrNothing($plans);
+        }
+
+        return $this->executePlans($plans);
+    }
+
+    public function status() : MigrationStatusList
+    {
+        $this->store->initialize();
+
+        $available = $this->repository->all();
+        $executed = $this->store->executedMigrations();
+        $statuses = [];
+
+        foreach ($available as $migration) {
+            if ($executed->has($migration->version)) {
+                $em = $executed->get($migration->version);
+                $statuses[] = new MigrationStatus($migration->version, $migration->name, MigrationState::EXECUTED, $em->executedAt);
+            } else {
+                $statuses[] = new MigrationStatus($migration->version, $migration->name, MigrationState::PENDING, null);
+            }
+        }
+
+        foreach ($executed as $em) {
+            if (!$available->has($em->version)) {
+                $statuses[] = new MigrationStatus($em->version, (string) $em->version, MigrationState::UNAVAILABLE, $em->executedAt);
+            }
+        }
+
+        return new MigrationStatusList(...$statuses);
+    }
+
+    /**
+     * @param list<MigrationPlan> $plans
+     *
+     * @return list<ExecutionResult>
+     */
+    private function executeAllOrNothing(array $plans) : array
+    {
+        /** @var list<ExecutionResult> $results */
+        $results = [];
+
+        $this->client->transaction(function () use ($plans, &$results) : void {
+            $context = new MigrationContext($this->client);
+
+            foreach ($plans as $plan) {
+                $result = $this->executor->execute($plan, $context);
+                $results[] = $result;
+
+                if (!$result->isSuccessful()) {
+                    throw $result->error ?? new \RuntimeException('Migration failed');
+                }
+
+                match ($plan->direction) {
+                    Direction::UP => $this->store->complete($result->version, $result->executionTimeMs),
+                    Direction::DOWN => $this->store->remove($result->version),
+                };
+            }
+        });
+
+        return $results;
+    }
+
+    /**
+     * @param list<MigrationPlan> $plans
+     *
+     * @return list<ExecutionResult>
+     */
+    private function executePlans(array $plans) : array
+    {
+        $context = new MigrationContext($this->client);
+        $results = [];
+
+        foreach ($plans as $plan) {
+            $result = $this->executor->execute($plan, $context);
+            $results[] = $result;
+
+            if (!$result->isSuccessful()) {
+                break;
+            }
+
+            match ($plan->direction) {
+                Direction::UP => $this->store->complete($result->version, $result->executionTimeMs),
+                Direction::DOWN => $this->store->remove($result->version),
+            };
+        }
+
+        return $results;
+    }
+
+    /**
+     * @param list<MigrationPlan> $plans
+     *
+     * @return list<ExecutionResult>
+     */
+    private function executeWithDryRun(array $plans) : array
+    {
+        $this->client->beginTransaction();
+
+        try {
+            $context = new MigrationContext($this->client);
+            $results = [];
+
+            foreach ($plans as $plan) {
+                $result = $this->executor->execute($plan, $context);
+                $results[] = $result;
+
+                if (!$result->isSuccessful()) {
+                    break;
+                }
+            }
+
+            return $results;
+        } finally {
+            $this->client->rollBack();
+        }
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Repository/AvailableMigration.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Repository/AvailableMigration.php
new file mode 100644
index 0000000000..b7a99f29a5
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Repository/AvailableMigration.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Repository;
+
+use Flow\PostgreSql\Migrations\{Migration, Rollback, Version};
+
+final readonly class AvailableMigration
+{
+    public function __construct(
+        public Version $version,
+        public string $name,
+        public Migration $migration,
+        public ?Rollback $rollback,
+    ) {
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Repository/AvailableMigrations.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Repository/AvailableMigrations.php
new file mode 100644
index 0000000000..f908f6db04
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Repository/AvailableMigrations.php
@@ -0,0 +1,92 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Repository;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Version;
+
+/**
+ * @implements \IteratorAggregate<int, AvailableMigration>
+ */
+final readonly class AvailableMigrations implements \Countable, \IteratorAggregate
+{
+    /**
+     * @var list<AvailableMigration>
+     */
+    private array $migrations;
+
+    public function __construct(AvailableMigration ...$migrations)
+    {
+        $sorted = \array_values($migrations);
+
+        \usort($sorted, static fn (AvailableMigration $a, AvailableMigration $b) : int => $a->version->isAfter($b->version) ? 1 : ($b->version->isAfter($a->version) ? -1 : 0));
+
+        $this->migrations = $sorted;
+    }
+
+    public function after(Version $version) : self
+    {
+        return new self(...\array_filter($this->migrations, static fn (AvailableMigration $m) : bool => $m->version->isAfter($version)));
+    }
+
+    public function count() : int
+    {
+        return \count($this->migrations);
+    }
+
+    public function first() : ?AvailableMigration
+    {
+        return $this->migrations[0] ?? null;
+    }
+
+    public function get(Version $version) : AvailableMigration
+    {
+        foreach ($this->migrations as $migration) {
+            if ($migration->version->equals($version)) {
+                return $migration;
+            }
+        }
+
+        throw MigrationException::versionNotFound($version);
+    }
+
+    /**
+     * @return \ArrayIterator<int, AvailableMigration>
+     */
+    public function getIterator() : \ArrayIterator
+    {
+        return new \ArrayIterator($this->migrations);
+    }
+
+    public function has(Version $version) : bool
+    {
+        foreach ($this->migrations as $migration) {
+            if ($migration->version->equals($version)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function isEmpty() : bool
+    {
+        return $this->migrations === [];
+    }
+
+    public function last() : ?AvailableMigration
+    {
+        if ($this->migrations === []) {
+            return null;
+        }
+
+        return $this->migrations[\count($this->migrations) - 1];
+    }
+
+    public function upTo(Version $version) : self
+    {
+        return new self(...\array_filter($this->migrations, static fn (AvailableMigration $m) : bool => !$m->version->isAfter($version)));
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Repository/MigrationRepository.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Repository/MigrationRepository.php
new file mode 100644
index 0000000000..87a6549c45
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Repository/MigrationRepository.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Repository;
+
+use Flow\PostgreSql\Migrations\Version;
+
+interface MigrationRepository
+{
+    public function all() : AvailableMigrations;
+
+    public function get(Version $version) : AvailableMigration;
+
+    public function has(Version $version) : bool;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Rollback.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Rollback.php
new file mode 100644
index 0000000000..da3f9142b1
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Rollback.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+interface Rollback
+{
+    public function rollback(MigrationContext $context) : void;
+
+    public function transactional() : bool;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Store/ExecutedMigrations.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Store/ExecutedMigrations.php
new file mode 100644
index 0000000000..03e345b618
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Store/ExecutedMigrations.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Store;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\{ExecutedMigration, Version};
+
+/**
+ * @implements \IteratorAggregate<int, ExecutedMigration>
+ */
+final readonly class ExecutedMigrations implements \Countable, \IteratorAggregate
+{
+    /**
+     * @var list<ExecutedMigration>
+     */
+    private array $migrations;
+
+    public function __construct(ExecutedMigration ...$migrations)
+    {
+        $sorted = \array_values($migrations);
+
+        \usort($sorted, static fn (ExecutedMigration $a, ExecutedMigration $b) : int => $a->version->isAfter($b->version) ? 1 : ($b->version->isAfter($a->version) ? -1 : 0));
+
+        $this->migrations = $sorted;
+    }
+
+    public function count() : int
+    {
+        return \count($this->migrations);
+    }
+
+    public function get(Version $version) : ExecutedMigration
+    {
+        foreach ($this->migrations as $migration) {
+            if ($migration->version->equals($version)) {
+                return $migration;
+            }
+        }
+
+        throw MigrationException::versionNotFound($version);
+    }
+
+    /**
+     * @return \ArrayIterator<int, ExecutedMigration>
+     */
+    public function getIterator() : \ArrayIterator
+    {
+        return new \ArrayIterator($this->migrations);
+    }
+
+    public function has(Version $version) : bool
+    {
+        foreach ($this->migrations as $migration) {
+            if ($migration->version->equals($version)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function isEmpty() : bool
+    {
+        return $this->migrations === [];
+    }
+
+    public function latest() : ?ExecutedMigration
+    {
+        if ($this->migrations === []) {
+            return null;
+        }
+
+        return $this->migrations[\count($this->migrations) - 1];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Store/MigrationStore.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Store/MigrationStore.php
new file mode 100644
index 0000000000..2fe25c5607
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Store/MigrationStore.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Store;
+
+use Flow\PostgreSql\Migrations\Version;
+
+interface MigrationStore
+{
+    public function complete(Version $version, int $executionTimeMs) : void;
+
+    public function executedMigrations() : ExecutedMigrations;
+
+    public function initialize() : void;
+
+    public function isInitialized() : bool;
+
+    public function remove(Version $version) : void;
+
+    public function reset() : void;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Store/PostgreSqlMigrationStore.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Store/PostgreSqlMigrationStore.php
new file mode 100644
index 0000000000..bb03840839
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Store/PostgreSqlMigrationStore.php
@@ -0,0 +1,117 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Store;
+
+use function Flow\PostgreSql\DSL\{and_,
+    asc,
+    col,
+    column,
+    column_type_integer,
+    column_type_timestamptz,
+    column_type_varchar,
+    create,
+    delete,
+    eq,
+    func,
+    insert,
+    param,
+    parameters,
+    select};
+
+use Flow\PostgreSql\Client\Client;
+use Flow\PostgreSql\Migrations\{Configuration, ExecutedMigration, Version};
+
+final readonly class PostgreSqlMigrationStore implements MigrationStore
+{
+    public function __construct(
+        private Client $client,
+        private Configuration $configuration,
+    ) {
+    }
+
+    public function complete(Version $version, int $executionTimeMs) : void
+    {
+        $this->client->execute(
+            insert()->into($this->qualifiedTableName())
+                ->columns('version', 'execution_time_ms')
+                ->values(...parameters(2)),
+            [(string) $version, $executionTimeMs],
+        );
+    }
+
+    public function executedMigrations() : ExecutedMigrations
+    {
+        $rows = $this->client->fetchAll(
+            select(col('version'), col('executed_at'), col('execution_time_ms'))
+                ->from($this->qualifiedTableName())
+                ->orderBy(asc('version')),
+        );
+
+        return new ExecutedMigrations(
+            ...\array_map(
+                static function (array $row) : ExecutedMigration {
+                    /** @var string $version */
+                    $version = $row['version'];
+                    /** @var string $executedAt */
+                    $executedAt = $row['executed_at'];
+                    /** @var null|int $executionTimeMs */
+                    $executionTimeMs = $row['execution_time_ms'];
+
+                    return new ExecutedMigration(
+                        Version::fromString($version),
+                        new \DateTimeImmutable($executedAt),
+                        $executionTimeMs,
+                    );
+                },
+                $rows,
+            ),
+        );
+    }
+
+    public function initialize() : void
+    {
+        $this->client->execute(
+            create()->table($this->configuration->tableName, $this->configuration->tableSchema)
+                ->column(column('version', column_type_varchar(255))->primaryKey())
+                ->column(column('executed_at', column_type_timestamptz())->notNull()->default(func('now')))
+                ->column(column('execution_time_ms', column_type_integer()))
+                ->ifNotExists(),
+        );
+    }
+
+    public function isInitialized() : bool
+    {
+        return $this->client->fetch(
+            select(col('table_name'))
+                ->from('information_schema.tables')
+                ->where(and_(
+                    eq(col('table_schema'), param(1)),
+                    eq(col('table_name'), param(2)),
+                )),
+            [$this->configuration->tableSchema, $this->configuration->tableName],
+        ) !== null;
+    }
+
+    public function remove(Version $version) : void
+    {
+        $this->client->execute(
+            delete()->from($this->qualifiedTableName())
+                ->where(eq(col('version'), param(1))),
+            [(string) $version],
+        );
+    }
+
+    public function reset() : void
+    {
+        $this->client->execute(
+            delete()->from($this->qualifiedTableName()),
+        );
+    }
+
+    private function qualifiedTableName() : string
+    {
+        return $this->configuration->tableSchema . '.' . $this->configuration->tableName;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Version.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Version.php
new file mode 100644
index 0000000000..620105698b
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/Version.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+
+final readonly class Version implements \Stringable
+{
+    private function __construct(
+        private string $version,
+    ) {
+    }
+
+    public static function fromString(string $version) : self
+    {
+        if (\preg_match('/^[a-zA-Z0-9_]+$/', $version) !== 1 || \strlen($version) > 255) {
+            throw MigrationException::invalidVersionFormat($version);
+        }
+
+        return new self($version);
+    }
+
+    public function __toString() : string
+    {
+        return $this->version;
+    }
+
+    public function equals(self $other) : bool
+    {
+        return $this->version === $other->version;
+    }
+
+    public function isAfter(self $other) : bool
+    {
+        return \strcmp($this->version, $other->version) > 0;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionAlias.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionAlias.php
new file mode 100644
index 0000000000..17ac6a6e78
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionAlias.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+enum VersionAlias : string
+{
+    case FIRST = 'first';
+    case LATEST = 'latest';
+    case NEXT = 'next';
+    case PREV = 'prev';
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator.php
new file mode 100644
index 0000000000..633512bd3f
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+interface VersionGenerator
+{
+    public function generate() : Version;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator/RandomHexVersionGenerator.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator/RandomHexVersionGenerator.php
new file mode 100644
index 0000000000..8f32e4f0c8
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator/RandomHexVersionGenerator.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\VersionGenerator;
+
+use Flow\PostgreSql\Migrations\{Version, VersionGenerator};
+
+final readonly class RandomHexVersionGenerator implements VersionGenerator
+{
+    public function __construct(
+        private int $length = 12,
+    ) {
+    }
+
+    public function generate() : Version
+    {
+        return Version::fromString(\bin2hex(\random_bytes(\max(1, (int) \ceil($this->length / 2)))));
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator/SequentialVersionGenerator.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator/SequentialVersionGenerator.php
new file mode 100644
index 0000000000..035ac7edd8
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator/SequentialVersionGenerator.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\VersionGenerator;
+
+use Flow\PostgreSql\Migrations\Store\MigrationStore;
+use Flow\PostgreSql\Migrations\{Version, VersionGenerator};
+
+final readonly class SequentialVersionGenerator implements VersionGenerator
+{
+    public function __construct(
+        private MigrationStore $store,
+        private int $padding = 5,
+    ) {
+    }
+
+    public function generate() : Version
+    {
+        $latest = $this->store->executedMigrations()->latest();
+        $next = $latest === null ? 1 : ((int) (string) $latest->version) + 1;
+
+        return Version::fromString(\str_pad((string) $next, $this->padding, '0', \STR_PAD_LEFT));
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator/TimestampVersionGenerator.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator/TimestampVersionGenerator.php
new file mode 100644
index 0000000000..15dc8b5dac
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionGenerator/TimestampVersionGenerator.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\VersionGenerator;
+
+use Flow\PostgreSql\Migrations\{Version, VersionGenerator};
+
+final readonly class TimestampVersionGenerator implements VersionGenerator
+{
+    public function __construct(
+        private string $format = 'YmdHis',
+    ) {
+    }
+
+    public function generate() : Version
+    {
+        return Version::fromString(\date($this->format));
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionResolver.php b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionResolver.php
new file mode 100644
index 0000000000..32ee3b94cd
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Migrations/VersionResolver.php
@@ -0,0 +1,97 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Repository\MigrationRepository;
+use Flow\PostgreSql\Migrations\Store\MigrationStore;
+
+final readonly class VersionResolver
+{
+    public function __construct(
+        private MigrationRepository $repository,
+        private MigrationStore $store,
+    ) {
+    }
+
+    public function resolve(VersionAlias|string $alias) : Version
+    {
+        $versionAlias = $alias instanceof VersionAlias ? $alias : VersionAlias::tryFrom($alias);
+
+        if ($versionAlias === null) {
+            return Version::fromString($alias);
+        }
+
+        return match ($versionAlias) {
+            VersionAlias::FIRST => $this->resolveFirst(),
+            VersionAlias::LATEST => $this->resolveLatest(),
+            VersionAlias::PREV => $this->resolvePrev(),
+            VersionAlias::NEXT => $this->resolveNext(),
+        };
+    }
+
+    private function resolveFirst() : Version
+    {
+        $first = $this->repository->all()->first();
+
+        if ($first === null) {
+            throw MigrationException::versionNotFound(Version::fromString('first'));
+        }
+
+        return $first->version;
+    }
+
+    private function resolveLatest() : Version
+    {
+        $last = $this->repository->all()->last();
+
+        if ($last === null) {
+            throw MigrationException::versionNotFound(Version::fromString('latest'));
+        }
+
+        return $last->version;
+    }
+
+    private function resolveNext() : Version
+    {
+        $latest = $this->store->executedMigrations()->latest();
+        $available = $this->repository->all();
+
+        if ($latest === null) {
+            $first = $available->first();
+
+            if ($first === null) {
+                throw MigrationException::versionNotFound(Version::fromString('next'));
+            }
+
+            return $first->version;
+        }
+
+        $next = $available->after($latest->version)->first();
+
+        if ($next === null) {
+            throw MigrationException::versionNotFound(Version::fromString('next'));
+        }
+
+        return $next->version;
+    }
+
+    private function resolvePrev() : Version
+    {
+        $latest = $this->store->executedMigrations()->latest();
+
+        if ($latest === null) {
+            throw MigrationException::versionNotFound(Version::fromString('prev'));
+        }
+
+        $items = \iterator_to_array($this->repository->all()->upTo($latest->version));
+
+        if (\count($items) < 2) {
+            return Version::fromString('0');
+        }
+
+        return $items[\count($items) - 2]->version;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Parser/ColumnTypeParser.php b/src/lib/postgresql/src/Flow/PostgreSql/Parser/ColumnTypeParser.php
new file mode 100644
index 0000000000..5d4f7099f9
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Parser/ColumnTypeParser.php
@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Parser;
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+
+final readonly class ColumnTypeParser
+{
+    public function parse(string $typeName) : ColumnType
+    {
+        if ($typeName === '') {
+            throw new \InvalidArgumentException('Type name cannot be empty');
+        }
+
+        $parser = new Parser();
+        $parsed = $parser->parse("SELECT NULL::{$typeName}");
+
+        $stmts = $parsed->raw()->getStmts();
+
+        if ($stmts === null || \count($stmts) === 0) {
+            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
+        }
+
+        $selectStmt = $stmts[0]->getStmt()?->getSelectStmt();
+
+        if ($selectStmt === null) {
+            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
+        }
+
+        $targetList = $selectStmt->getTargetList();
+
+        if ($targetList === null || \count($targetList) === 0) {
+            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
+        }
+
+        $resTarget = $targetList[0]->getResTarget();
+
+        if ($resTarget === null) {
+            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
+        }
+
+        $val = $resTarget->getVal();
+
+        if ($val === null) {
+            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
+        }
+
+        $typeCast = $val->getTypeCast();
+
+        if ($typeCast === null) {
+            throw InvalidAstException::unexpectedNodeType('TypeCast', 'unknown');
+        }
+
+        $typeNameAst = $typeCast->getTypeName();
+
+        if ($typeNameAst === null) {
+            throw InvalidAstException::missingRequiredField('typeName', 'TypeCast');
+        }
+
+        return ColumnType::fromAst($typeNameAst);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Parser/ConditionParser.php b/src/lib/postgresql/src/Flow/PostgreSql/Parser/ConditionParser.php
new file mode 100644
index 0000000000..3b62dc665e
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Parser/ConditionParser.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Parser;
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Protobuf\AST\Node;
+use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+
+final readonly class ConditionParser
+{
+    public function __construct(
+        private Parser $parser,
+    ) {
+    }
+
+    public function parse(string $condition) : Node
+    {
+        $parsed = $this->parser->parse("SELECT * FROM t WHERE {$condition}");
+
+        $stmts = $parsed->raw()->getStmts();
+
+        if ($stmts === null || \count($stmts) === 0) {
+            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
+        }
+
+        $selectStmt = $stmts[0]->getStmt()?->getSelectStmt();
+
+        if ($selectStmt === null) {
+            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
+        }
+
+        $whereClause = $selectStmt->getWhereClause();
+
+        if ($whereClause === null) {
+            throw InvalidAstException::missingRequiredField('whereClause', 'SelectStmt');
+        }
+
+        return $whereClause;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Parser/ExpressionParser.php b/src/lib/postgresql/src/Flow/PostgreSql/Parser/ExpressionParser.php
new file mode 100644
index 0000000000..de20eebd37
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Parser/ExpressionParser.php
@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Parser;
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Protobuf\AST\Node;
+use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+
+final readonly class ExpressionParser
+{
+    public function __construct(
+        private Parser $parser,
+    ) {
+    }
+
+    public function parse(string $expression) : Node
+    {
+        $parsed = $this->parser->parse("SELECT {$expression} AS x");
+
+        $stmts = $parsed->raw()->getStmts();
+
+        if ($stmts === null || \count($stmts) === 0) {
+            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
+        }
+
+        $selectStmt = $stmts[0]->getStmt()?->getSelectStmt();
+
+        if ($selectStmt === null) {
+            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
+        }
+
+        $targetList = $selectStmt->getTargetList();
+
+        if ($targetList === null || \count($targetList) === 0) {
+            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
+        }
+
+        $resTarget = $targetList[0]->getResTarget();
+
+        if ($resTarget === null) {
+            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
+        }
+
+        $val = $resTarget->getVal();
+
+        if ($val === null) {
+            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
+        }
+
+        return $val;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/All.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/All.php
index d369b370dd..50e7c8c1c4 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/All.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/All.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, Node, PBString, SubLink, SubLinkType};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class All implements Condition
 {
@@ -137,6 +137,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/AndCondition.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/AndCondition.php
index 01460f1aea..e86390ab3f 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/AndCondition.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/AndCondition.php
@@ -7,6 +7,7 @@
 use Flow\PostgreSql\Protobuf\AST\{A_Expr_Kind, SubLinkType};
 use Flow\PostgreSql\Protobuf\AST\{BoolExpr, BoolExprType, Node};
 use Flow\PostgreSql\QueryBuilder\Exception\{InvalidAstException, UnsupportedNodeException};
+use Flow\PostgreSql\QueryBuilder\Expression\AliasedExpression;
 
 final readonly class AndCondition implements Condition
 {
@@ -58,6 +59,11 @@ public function and(Condition $other) : self
         return new self(...[...$this->conditions, $other]);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Any.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Any.php
index 43c1404b4b..d601264df9 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Any.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Any.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, Node, PBString, SubLink, SubLinkType};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class Any implements Condition
 {
@@ -137,6 +137,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Between.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Between.php
index 63bd0814f8..8e548f7095 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Between.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Between.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, Node, PBList, PBString};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class Between implements Condition
 {
@@ -79,6 +79,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/BooleanCondition.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/BooleanCondition.php
new file mode 100644
index 0000000000..99399281da
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/BooleanCondition.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\QueryBuilder\Condition;
+
+use Flow\PostgreSql\Protobuf\AST\{Boolean, Node};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Column, Expression, ExpressionFactory, Literal};
+
+/**
+ * Wraps an Expression as a Condition for use in WHERE/HAVING/JOIN ON clauses.
+ *
+ * Used for boolean columns (e.g., WHERE is_active) and boolean literals (e.g., WHERE true).
+ * The AST output is identical to the wrapped expression — this is a type-system bridge only.
+ */
+final readonly class BooleanCondition implements Condition
+{
+    public function __construct(
+        public Expression $expression,
+    ) {
+    }
+
+    public static function fromAst(Node $node) : static
+    {
+        if ($node->hasColumnRef()) {
+            return new self(Column::fromAst($node));
+        }
+
+        if ($node->hasAConst()) {
+            $aConst = $node->getAConst();
+
+            if ($aConst !== null && $aConst->hasBoolval()) {
+                $boolval = $aConst->getBoolval();
+                \assert($boolval instanceof Boolean);
+
+                return new self(Literal::bool($boolval->getBoolval()));
+            }
+        }
+
+        return new self(ExpressionFactory::fromAst($node));
+    }
+
+    public function and(Condition $other) : AndCondition
+    {
+        return new AndCondition($this, $other);
+    }
+
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
+    public function not() : NotCondition
+    {
+        return new NotCondition($this);
+    }
+
+    public function or(Condition $other) : OrCondition
+    {
+        return new OrCondition($this, $other);
+    }
+
+    public function toAst() : Node
+    {
+        return $this->expression->toAst();
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Comparison.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Comparison.php
index 0bdff59413..062e79b7b9 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Comparison.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Comparison.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, Node, PBString};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class Comparison implements Condition
 {
@@ -77,6 +77,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Condition.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Condition.php
index 9e4e232ea7..18aaebd18b 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Condition.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Condition.php
@@ -4,12 +4,15 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Condition;
 
-use Flow\PostgreSql\QueryBuilder\Bridge\AstConvertible;
+use Flow\PostgreSql\QueryBuilder\Expression\Expression;
 
 /**
  * Base interface for all SQL conditions (WHERE, HAVING, ON, etc.).
+ *
+ * Conditions are expressions that evaluate to boolean — they can be used
+ * anywhere an expression is expected (SELECT list, CASE WHEN, etc.).
  */
-interface Condition extends AstConvertible
+interface Condition extends Expression
 {
     public function and(self $other) : AndCondition;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/ConditionBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/ConditionBuilder.php
index 8792d1bf5f..208b9778fe 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/ConditionBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/ConditionBuilder.php
@@ -36,6 +36,9 @@ public function getCondition() : ?Condition
         return $this->condition;
     }
 
+    /**
+     * @phpstan-assert-if-true Condition $this->condition
+     */
     public function isEmpty() : bool
     {
         return $this->condition === null;
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/ConditionFactory.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/ConditionFactory.php
index 3daddf532c..db5711c450 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/ConditionFactory.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/ConditionFactory.php
@@ -62,12 +62,8 @@ public static function fromAst(Node $node) : Condition
             };
         }
 
-        if ($node->getTypeCast() !== null) {
-            return RawCondition::fromTypeCast($node);
-        }
-
-        if ($node->getAConst() !== null) {
-            return RawCondition::fromAConst($node);
+        if ($node->getAConst() !== null || $node->getColumnRef() !== null) {
+            return BooleanCondition::fromAst($node);
         }
 
         throw UnsupportedNodeException::forNodeType('Unknown condition node type');
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Exists.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Exists.php
index 7c3bff8a38..cc81ddd4ff 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Exists.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Exists.php
@@ -6,6 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{Node, SubLink, SubLinkType};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+use Flow\PostgreSql\QueryBuilder\Expression\AliasedExpression;
 
 final readonly class Exists implements Condition
 {
@@ -40,6 +41,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/In.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/In.php
index ab434f6f8d..bac0000301 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/In.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/In.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, Node, PBList, PBString};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class In implements Condition
 {
@@ -73,6 +73,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/IsDistinctFrom.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/IsDistinctFrom.php
index ea7ba19e4b..1388a4bee7 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/IsDistinctFrom.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/IsDistinctFrom.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, Node, PBString};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class IsDistinctFrom implements Condition
 {
@@ -57,6 +57,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/IsNull.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/IsNull.php
index fe3f3a32c3..fbc2c4f447 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/IsNull.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/IsNull.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{Node, NullTest, NullTestType};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class IsNull implements Condition
 {
@@ -49,6 +49,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Like.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Like.php
index e95860ecf1..cfd51d04c5 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Like.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/Like.php
@@ -4,9 +4,9 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Condition;
 
-use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, Node, PBString};
+use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, BoolExpr, BoolExprType, Node, PBString};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class Like implements Condition
 {
@@ -15,6 +15,7 @@ public function __construct(
         public Expression $pattern,
         public bool $caseInsensitive = false,
         public ?Expression $escape = null,
+        public bool $negated = false,
     ) {
     }
 
@@ -59,6 +60,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
@@ -83,6 +89,16 @@ public function toAst() : Node
             'rexpr' => $this->pattern->toAst(),
         ]);
 
-        return new Node(['a_expr' => $aExpr]);
+        $likeNode = new Node(['a_expr' => $aExpr]);
+
+        if ($this->negated) {
+            $boolExpr = new BoolExpr();
+            $boolExpr->setBoolop(BoolExprType::NOT_EXPR);
+            $boolExpr->setArgs([$likeNode]);
+
+            return new Node(['bool_expr' => $boolExpr]);
+        }
+
+        return $likeNode;
     }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/NotCondition.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/NotCondition.php
index 7a143f228d..d2c8dd8ab1 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/NotCondition.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/NotCondition.php
@@ -7,11 +7,12 @@
 use Flow\PostgreSql\Protobuf\AST\{A_Expr_Kind, SubLinkType};
 use Flow\PostgreSql\Protobuf\AST\{BoolExpr, BoolExprType, Node};
 use Flow\PostgreSql\QueryBuilder\Exception\{InvalidAstException, UnsupportedNodeException};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class NotCondition implements Condition
 {
     public function __construct(
-        private Condition $condition,
+        private Expression $expression,
     ) {
     }
 
@@ -46,7 +47,7 @@ public static function fromAst(Node $node) : static
 
         $argNode = $args[0];
 
-        return new self(self::conditionFromNode($argNode));
+        return new self(self::expressionFromNode($argNode));
     }
 
     public function and(Condition $other) : AndCondition
@@ -54,6 +55,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : self
     {
         return new self($this);
@@ -68,7 +74,7 @@ public function toAst() : Node
     {
         $boolExpr = new BoolExpr();
         $boolExpr->setBoolop(BoolExprType::NOT_EXPR);
-        $boolExpr->setArgs([$this->condition->toAst()]);
+        $boolExpr->setArgs([$this->expression->toAst()]);
 
         $node = new Node();
         $node->setBoolExpr($boolExpr);
@@ -76,7 +82,7 @@ public function toAst() : Node
         return $node;
     }
 
-    private static function conditionFromNode(Node $node) : Condition
+    private static function expressionFromNode(Node $node) : Expression
     {
         if ($node->hasBoolExpr()) {
             $boolExpr = $node->getBoolExpr();
@@ -132,6 +138,6 @@ private static function conditionFromNode(Node $node) : Condition
             };
         }
 
-        throw UnsupportedNodeException::forNodeType('unknown node type in condition');
+        return ExpressionFactory::fromAst($node);
     }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/OperatorCondition.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/OperatorCondition.php
index db10d35392..945101c945 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/OperatorCondition.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/OperatorCondition.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, Node, PBString};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 /**
  * Generic operator condition for any binary operator (e.g., @>, <@, &&, ~, @@).
@@ -71,6 +71,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/OrCondition.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/OrCondition.php
index 3d5be81995..cbda859947 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/OrCondition.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/OrCondition.php
@@ -7,6 +7,7 @@
 use Flow\PostgreSql\Protobuf\AST\{A_Expr_Kind, SubLinkType};
 use Flow\PostgreSql\Protobuf\AST\{BoolExpr, BoolExprType, Node};
 use Flow\PostgreSql\QueryBuilder\Exception\{InvalidAstException, UnsupportedNodeException};
+use Flow\PostgreSql\QueryBuilder\Expression\AliasedExpression;
 
 final readonly class OrCondition implements Condition
 {
@@ -54,6 +55,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/RawCondition.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/RawCondition.php
deleted file mode 100644
index 0e34b36b9e..0000000000
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/RawCondition.php
+++ /dev/null
@@ -1,156 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\QueryBuilder\Condition;
-
-use Flow\PostgreSql\Parser;
-use Flow\PostgreSql\Protobuf\AST\{Boolean, Node};
-use Flow\PostgreSql\QueryBuilder\Exception\{InvalidAstException, UnsupportedNodeException};
-
-/**
- * Raw SQL condition (escape hatch for unsupported conditions).
- *
- * Use this when you need to include raw SQL conditions that aren't supported by the query builder.
- * The SQL will be parsed to ensure it's valid PostgreSQL syntax.
- *
- * SECURITY WARNING: This class accepts raw SQL without parameterization.
- * SQL injection is possible if used with untrusted user input.
- * Only use with trusted, validated input. For user-provided values,
- * use the standard Condition classes (Comparison, Like, In, etc.) with Parameter.
- *
- * @see Comparison For safe comparison conditions
- * @see Parameter For safe parameterized values
- */
-final readonly class RawCondition implements Condition
-{
-    public function __construct(
-        private string $sql,
-    ) {
-    }
-
-    public static function fromAConst(Node $node) : static
-    {
-        $aConst = $node->getAConst();
-
-        if ($aConst === null) {
-            throw InvalidAstException::unexpectedNodeType('A_Const', 'unknown');
-        }
-
-        if ($aConst->hasBoolval()) {
-            $boolval = $aConst->getBoolval();
-            \assert($boolval instanceof Boolean);
-
-            return new self($boolval->getBoolval() ? 'true' : 'false');
-        }
-
-        throw UnsupportedNodeException::cannotReconstruct(self::class . ' from A_Const');
-    }
-
-    public static function fromAst(Node $node) : static
-    {
-        throw UnsupportedNodeException::cannotReconstruct(self::class);
-    }
-
-    public static function fromTypeCast(Node $node) : static
-    {
-        $typeCast = $node->getTypeCast();
-
-        if ($typeCast === null) {
-            throw InvalidAstException::unexpectedNodeType('TypeCast', 'unknown');
-        }
-
-        $typeName = $typeCast->getTypeName();
-
-        if ($typeName === null) {
-            throw InvalidAstException::missingRequiredField('type_name', 'TypeCast');
-        }
-
-        $names = $typeName->getNames();
-
-        if ($names !== null) {
-            foreach ($names as $nameNode) {
-                $stringNode = $nameNode->getString();
-
-                if ($stringNode !== null && $stringNode->getSval() === 'bool') {
-                    $arg = $typeCast->getArg();
-
-                    if ($arg !== null) {
-                        $aConst = $arg->getAConst();
-
-                        if ($aConst !== null) {
-                            $sval = $aConst->getSval();
-
-                            if ($sval !== null) {
-                                return new self($sval->getSval());
-                            }
-                        }
-                    }
-                }
-            }
-        }
-
-        throw UnsupportedNodeException::cannotReconstruct(self::class . ' from TypeCast');
-    }
-
-    public function and(Condition $other) : AndCondition
-    {
-        return new AndCondition($this, $other);
-    }
-
-    public function not() : NotCondition
-    {
-        return new NotCondition($this);
-    }
-
-    public function or(Condition $other) : OrCondition
-    {
-        return new OrCondition($this, $other);
-    }
-
-    public function toAst() : Node
-    {
-        $parser = new Parser();
-        $parsed = $parser->parse("SELECT 1 WHERE {$this->sql}");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if (\count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('sql', 'RawCondition', 'Cannot parse SQL condition');
-        }
-
-        $firstStmt = $stmts[0];
-
-        if (!$firstStmt->hasStmt()) {
-            throw InvalidAstException::invalidFieldValue('sql', 'RawCondition', 'Statement does not have stmt field');
-        }
-
-        $stmt = $firstStmt->getStmt();
-
-        if ($stmt === null) {
-            throw InvalidAstException::missingRequiredField('stmt', 'RawPgQuery_Stmt');
-        }
-
-        if (!$stmt->hasSelectStmt()) {
-            throw InvalidAstException::invalidFieldValue('sql', 'RawCondition', 'Expected SelectStmt');
-        }
-
-        $selectStmt = $stmt->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::missingRequiredField('select_stmt', 'Node');
-        }
-
-        if (!$selectStmt->hasWhereClause()) {
-            throw InvalidAstException::invalidFieldValue('sql', 'RawCondition', 'WHERE clause is missing');
-        }
-
-        $whereClause = $selectStmt->getWhereClause();
-
-        if ($whereClause === null) {
-            throw InvalidAstException::missingRequiredField('where_clause', 'SelectStmt');
-        }
-
-        return $whereClause;
-    }
-}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/SimilarTo.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/SimilarTo.php
index 2a9b3e0b3a..cc997055a2 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/SimilarTo.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Condition/SimilarTo.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{A_Expr, A_Expr_Kind, CoercionForm, FuncCall, Node, PBString};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Expression\{Expression, ExpressionFactory};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory};
 
 final readonly class SimilarTo implements Condition
 {
@@ -77,6 +77,11 @@ public function and(Condition $other) : AndCondition
         return new AndCondition($this, $other);
     }
 
+    public function as(string $alias) : AliasedExpression
+    {
+        return new AliasedExpression($this, $alias);
+    }
+
     public function not() : NotCondition
     {
         return new NotCondition($this);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Copy/CopyFromFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Copy/CopyFromFinalStep.php
index ab9c2d94b9..aadd3f341c 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Copy/CopyFromFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Copy/CopyFromFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Copy;
 
 use Flow\PostgreSql\Protobuf\AST\CopyStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CopyFromFinalStep extends SqlQuery
+interface CopyFromFinalStep extends Sql
 {
     public function toAst() : CopyStmt;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Copy/CopyToFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Copy/CopyToFinalStep.php
index 9e61e19459..e6f32f3738 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Copy/CopyToFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Copy/CopyToFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Copy;
 
 use Flow\PostgreSql\Protobuf\AST\CopyStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CopyToFinalStep extends SqlQuery
+interface CopyToFinalStep extends Sql
 {
     public function toAst() : CopyStmt;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/CloseCursorFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/CloseCursorFinalStep.php
index 2e38dae520..566adbb279 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/CloseCursorFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/CloseCursorFinalStep.php
@@ -4,8 +4,8 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Cursor;
 
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CloseCursorFinalStep extends SqlQuery
+interface CloseCursorFinalStep extends Sql
 {
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/DeclareCursorBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/DeclareCursorBuilder.php
index 0e1eade1a2..05fd0c523a 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/DeclareCursorBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/DeclareCursorBuilder.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Parser;
 use Flow\PostgreSql\Protobuf\AST\{DeclareCursorStmt, Node};
-use Flow\PostgreSql\QueryBuilder\{AstToSql, SqlQuery};
+use Flow\PostgreSql\QueryBuilder\{AstToSql, Sql};
 use Flow\PostgreSql\QueryBuilder\Select\SelectFinalStep;
 
 final class DeclareCursorBuilder implements DeclareCursorOptionsStep
@@ -29,9 +29,9 @@ public static function create(string $cursorName, SelectFinalStep $query) : Decl
         return new self($cursorName, $node);
     }
 
-    public static function createFromSql(string $cursorName, string|SqlQuery $query) : DeclareCursorOptionsStep
+    public static function createFromSql(string $cursorName, string|Sql $query) : DeclareCursorOptionsStep
     {
-        $sql = $query instanceof SqlQuery ? $query->toSql() : $query;
+        $sql = $query instanceof Sql ? $query->toSql() : $query;
         $parser = new Parser();
         $parsed = $parser->parse($sql);
         $rawStmts = $parsed->raw()->getStmts();
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/DeclareCursorFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/DeclareCursorFinalStep.php
index e1a9372bd6..0ffc9ae040 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/DeclareCursorFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/DeclareCursorFinalStep.php
@@ -4,8 +4,8 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Cursor;
 
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DeclareCursorFinalStep extends SqlQuery
+interface DeclareCursorFinalStep extends Sql
 {
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/FetchCursorFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/FetchCursorFinalStep.php
index 8b6d04dade..325fcc6b67 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/FetchCursorFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Cursor/FetchCursorFinalStep.php
@@ -4,8 +4,8 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Cursor;
 
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface FetchCursorFinalStep extends SqlQuery
+interface FetchCursorFinalStep extends Sql
 {
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteBuilder.php
index 26aaf52bc5..4da5f90cdb 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteBuilder.php
@@ -254,8 +254,20 @@ public function toAst() : DeleteStmt
         return $deleteStmt;
     }
 
-    public function using(TableReference ...$tables) : DeleteWhereStep
+    public function using(string|TableReference ...$tables) : DeleteWhereStep
     {
+        $tables = \array_map(
+            static function (string|TableReference $t) : TableReference {
+                if ($t instanceof TableReference) {
+                    return $t;
+                }
+                $id = QualifiedIdentifier::parse($t);
+
+                return new Table($id->name(), $id->schema());
+            },
+            $tables,
+        );
+
         return new self(
             with: $this->with,
             table: $this->table,
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteFinalStep.php
index 851177221e..bcc8bdad5d 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteFinalStep.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\QueryBuilder\Delete;
 
 use Flow\PostgreSql\Protobuf\AST\DeleteStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 /**
  * Terminal interface for DELETE query builder.
  * Represents a complete DELETE statement that can be converted to AST.
  */
-interface DeleteFinalStep extends SqlQuery
+interface DeleteFinalStep extends Sql
 {
     /**
      * Convert this DELETE query to a protobuf AST DeleteStmt.
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteUsingStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteUsingStep.php
index ddb1d20054..557e057050 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteUsingStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Delete/DeleteUsingStep.php
@@ -18,5 +18,5 @@ interface DeleteUsingStep extends DeleteWhereStep
      *
      * @param TableReference ...$tables Tables to join for conditional deletion
      */
-    public function using(TableReference ...$tables) : DeleteWhereStep;
+    public function using(string|TableReference ...$tables) : DeleteWhereStep;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Expression/RawExpression.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Expression/RawExpression.php
deleted file mode 100644
index bda3a90f8e..0000000000
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Expression/RawExpression.php
+++ /dev/null
@@ -1,88 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\QueryBuilder\Expression;
-
-use Flow\PostgreSql\Parser;
-use Flow\PostgreSql\Protobuf\AST\Node;
-use Flow\PostgreSql\QueryBuilder\Exception\{InvalidAstException, UnsupportedNodeException};
-
-/**
- * Raw SQL expression (escape hatch for unsupported expressions).
- *
- * Use this when you need to include raw SQL that isn't supported by the query builder.
- * The SQL will be parsed to ensure it's valid PostgreSQL syntax.
- *
- * SECURITY WARNING: This class accepts raw SQL without parameterization.
- * SQL injection is possible if used with untrusted user input.
- * Only use with trusted, validated input. For user-provided values,
- * use parameterized queries with Parameter expressions instead.
- *
- * @see Parameter For safe parameterized values
- */
-final readonly class RawExpression implements Expression
-{
-    public function __construct(
-        private string $sql,
-    ) {
-        if ($this->sql === '') {
-            throw new \InvalidArgumentException('RawExpression SQL cannot be empty');
-        }
-    }
-
-    public static function fromAst(Node $node) : static
-    {
-        throw UnsupportedNodeException::cannotReconstruct('RawExpression - cannot convert AST back to raw SQL string');
-    }
-
-    public function as(string $alias) : AliasedExpression
-    {
-        return new AliasedExpression($this, $alias);
-    }
-
-    public function sql() : string
-    {
-        return $this->sql;
-    }
-
-    public function toAst() : Node
-    {
-        $parser = new Parser();
-        $parsed = $parser->parse("SELECT {$this->sql} AS x");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if ($stmts === null || \count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
-        }
-
-        $firstStmt = $stmts[0];
-        $selectStmt = $firstStmt->getStmt()?->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
-        }
-
-        $targetList = $selectStmt->getTargetList();
-
-        if ($targetList === null || \count($targetList) === 0) {
-            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
-        }
-
-        $firstTarget = $targetList[0];
-        $resTarget = $firstTarget->getResTarget();
-
-        if ($resTarget === null) {
-            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
-        }
-
-        $val = $resTarget->getVal();
-
-        if ($val === null) {
-            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
-        }
-
-        return $val;
-    }
-}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Expression/TypeCast.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Expression/TypeCast.php
index cb26da10a2..d2ec548d6c 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Expression/TypeCast.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Expression/TypeCast.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{Node, TypeCast as AstTypeCast};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 
 /**
  * Represents a type cast expression: expr::type or CAST(expr AS type).
@@ -15,11 +15,11 @@
 {
     /**
      * @param Expression $expression Expression to cast
-     * @param DataType $dataType Target data type
+     * @param ColumnType $dataType Target data type
      */
     public function __construct(
         private Expression $expression,
-        private DataType $dataType,
+        private ColumnType $dataType,
     ) {
     }
 
@@ -45,7 +45,7 @@ public static function fromAst(Node $node) : static
             throw InvalidAstException::missingRequiredField('typeName', 'TypeCast');
         }
 
-        $dataType = DataType::fromAst($typeNameNode);
+        $dataType = ColumnType::fromAst($typeNameNode);
 
         return new self($expression, $dataType);
     }
@@ -55,7 +55,7 @@ public function as(string $alias) : AliasedExpression
         return new AliasedExpression($this, $alias);
     }
 
-    public function getDataType() : DataType
+    public function getColumnType() : ColumnType
     {
         return $this->dataType;
     }
@@ -77,7 +77,7 @@ public function toAst() : Node
         return $node;
     }
 
-    public function withDataType(DataType $dataType) : self
+    public function withColumnType(ColumnType $dataType) : self
     {
         return new self($this->expression, $dataType);
     }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Factory/CreateFactory.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Factory/CreateFactory.php
index 7d857cd49a..f906b67ac3 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Factory/CreateFactory.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Factory/CreateFactory.php
@@ -8,6 +8,7 @@
 use Flow\PostgreSql\QueryBuilder\Schema\CreateSequence\{CreateSequenceBuilder, CreateSequenceOptionsStep};
 use Flow\PostgreSql\QueryBuilder\Schema\CreateTable\{CreateTableBuilder, CreateTableColumnsStep, CreateTemporaryTableColumnsStep};
 use Flow\PostgreSql\QueryBuilder\Schema\CreateTableAs\{CreateTableAsBuilder, CreateTableAsFinalStep};
+use Flow\PostgreSql\QueryBuilder\Schema\Database\{CreateDatabaseBuilder, CreateDatabaseOptionsStep};
 use Flow\PostgreSql\QueryBuilder\Schema\Domain\{CreateDomainBuilder, CreateDomainTypeStep};
 use Flow\PostgreSql\QueryBuilder\Schema\Extension\{CreateExtensionBuilder, CreateExtensionOptionsStep};
 use Flow\PostgreSql\QueryBuilder\Schema\Function\{CreateFunctionArgsStep, CreateFunctionBuilder, CreateProcedureArgsStep, CreateProcedureBuilder};
@@ -28,6 +29,11 @@ public function compositeType(string $name) : CreateCompositeTypeAttributesStep
         return CreateCompositeTypeBuilder::create($name);
     }
 
+    public function database(string $name) : CreateDatabaseOptionsStep
+    {
+        return CreateDatabaseBuilder::create($name);
+    }
+
     public function domain(string $name) : CreateDomainTypeStep
     {
         return CreateDomainBuilder::create($name);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Factory/DropFactory.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Factory/DropFactory.php
index 4cd1a6d998..5a8e3caa9b 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Factory/DropFactory.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Factory/DropFactory.php
@@ -4,6 +4,7 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Factory;
 
+use Flow\PostgreSql\QueryBuilder\Schema\Database\{DropDatabaseBuilder, DropDatabaseFinalStep};
 use Flow\PostgreSql\QueryBuilder\Schema\Domain\{DropDomainBuilder, DropDomainFinalStep};
 use Flow\PostgreSql\QueryBuilder\Schema\DropSequence\{DropSequenceBuilder, DropSequenceFinalStep};
 use Flow\PostgreSql\QueryBuilder\Schema\DropTable\{DropTableBuilder, DropTableFinalStep};
@@ -21,6 +22,11 @@
 
 final readonly class DropFactory
 {
+    public function database(string $name) : DropDatabaseFinalStep
+    {
+        return DropDatabaseBuilder::create($name);
+    }
+
     public function domain(string ...$domains) : DropDomainFinalStep
     {
         return DropDomainBuilder::create(...$domains);
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Insert/BulkInsert.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Insert/BulkInsert.php
index 592ab74bf0..c64dfca679 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Insert/BulkInsert.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Insert/BulkInsert.php
@@ -5,7 +5,7 @@
 namespace Flow\PostgreSql\QueryBuilder\Insert;
 
 use Flow\PostgreSql\QueryBuilder\Clause\ConflictTarget;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 /**
  * Optimized bulk INSERT query builder for high-performance multi-row inserts.
@@ -15,7 +15,7 @@
  *
  * Uses PostgreSQL-style numbered placeholders ($1, $2, $3...).
  */
-final readonly class BulkInsert implements SqlQuery
+final readonly class BulkInsert implements Sql
 {
     /**
      * @param list<string> $columns
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Insert/InsertFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Insert/InsertFinalStep.php
index c9bd3c6f14..877f967931 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Insert/InsertFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Insert/InsertFinalStep.php
@@ -5,12 +5,12 @@
 namespace Flow\PostgreSql\QueryBuilder\Insert;
 
 use Flow\PostgreSql\Protobuf\AST\InsertStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 /**
  * Terminal interface for INSERT query builder.
  */
-interface InsertFinalStep extends SqlQuery
+interface InsertFinalStep extends Sql
 {
     /**
      * Convert this INSERT query to protobuf AST.
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Merge/MergeFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Merge/MergeFinalStep.php
index 44813ee620..ea95d069d5 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Merge/MergeFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Merge/MergeFinalStep.php
@@ -5,12 +5,12 @@
 namespace Flow\PostgreSql\QueryBuilder\Merge;
 
 use Flow\PostgreSql\Protobuf\AST\MergeStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 /**
  * Terminal interface for MERGE query builder.
  */
-interface MergeFinalStep extends SqlQuery
+interface MergeFinalStep extends Sql
 {
     /**
      * Convert this MERGE query to protobuf AST.
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceFinalStep.php
index adf2140224..e8fd9c7740 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\AlterSequence;
 
 use Flow\PostgreSql\Protobuf\AST\AlterSeqStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterSequenceFinalStep extends SqlQuery
+interface AlterSequenceFinalStep extends Sql
 {
     public function toAst() : AlterSeqStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceLoggingFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceLoggingFinalStep.php
index f1ec293640..6e44075f97 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceLoggingFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceLoggingFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\AlterSequence;
 
 use Flow\PostgreSql\Protobuf\AST\AlterTableStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterSequenceLoggingFinalStep extends SqlQuery
+interface AlterSequenceLoggingFinalStep extends Sql
 {
     public function toAst() : AlterTableStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceOwnerFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceOwnerFinalStep.php
index 985c65ea75..8dfe29f7d3 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceOwnerFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceOwnerFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\AlterSequence;
 
 use Flow\PostgreSql\Protobuf\AST\AlterTableStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterSequenceOwnerFinalStep extends SqlQuery
+interface AlterSequenceOwnerFinalStep extends Sql
 {
     public function toAst() : AlterTableStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceSchemaFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceSchemaFinalStep.php
index 834bd87cb9..39abded448 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceSchemaFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/AlterSequenceSchemaFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\AlterSequence;
 
 use Flow\PostgreSql\Protobuf\AST\AlterObjectSchemaStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterSequenceSchemaFinalStep extends SqlQuery
+interface AlterSequenceSchemaFinalStep extends Sql
 {
     public function toAst() : AlterObjectSchemaStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/RenameSequenceFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/RenameSequenceFinalStep.php
index b656237dbd..1b942cac1f 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/RenameSequenceFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterSequence/RenameSequenceFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\AlterSequence;
 
 use Flow\PostgreSql\Protobuf\AST\RenameStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface RenameSequenceFinalStep extends SqlQuery
+interface RenameSequenceFinalStep extends Sql
 {
     public function toAst() : RenameStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableBuilder.php
index d328a2765f..dd878f33f9 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableBuilder.php
@@ -4,12 +4,11 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\AlterTable;
 
-use Flow\PostgreSql\Parser;
 use Flow\PostgreSql\Protobuf\AST\{AlterTableCmd, AlterTableStmt, AlterTableType, DropBehavior, Node, ObjectType, RangeVar};
 use Flow\PostgreSql\Protobuf\AST\ColumnDef;
 use Flow\PostgreSql\QueryBuilder\AstToSql;
-use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, DataType};
+use Flow\PostgreSql\QueryBuilder\Expression\Expression;
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, ColumnType};
 use Flow\PostgreSql\QueryBuilder\Schema\Constraint\TableConstraint;
 
 final readonly class AlterTableBuilder implements AlterTableFinalStep
@@ -66,6 +65,28 @@ public function addConstraint(TableConstraint $constraint) : AlterTableFinalStep
         );
     }
 
+    public function addInherit(string $table) : AlterTableFinalStep
+    {
+        $cmd = new AlterTableCmd();
+        $cmd->setSubtype(AlterTableType::AT_AddInherit);
+
+        $rangeVar = new RangeVar();
+        $rangeVar->setRelname($table);
+        $rangeVar->setInh(true);
+        $rangeVar->setRelpersistence('p');
+
+        $node = new Node();
+        $node->setRangeVar($rangeVar);
+        $cmd->setDef($node);
+
+        return new self(
+            $this->table,
+            $this->schema,
+            [...$this->commands, $cmd],
+            $this->ifExists,
+        );
+    }
+
     public function alterColumnDropDefault(string $column) : AlterTableFinalStep
     {
         $cmd = new AlterTableCmd();
@@ -94,13 +115,13 @@ public function alterColumnDropNotNull(string $column) : AlterTableFinalStep
         );
     }
 
-    public function alterColumnSetDefault(string $column, string $defaultExpression) : AlterTableFinalStep
+    public function alterColumnSetDefault(string $column, Expression $defaultExpression) : AlterTableFinalStep
     {
         $cmd = new AlterTableCmd();
         $cmd->setSubtype(AlterTableType::AT_ColumnDefault);
         $cmd->setName($column);
 
-        $cmd->setDef($this->parseExpression($defaultExpression));
+        $cmd->setDef($defaultExpression->toAst());
 
         return new self(
             $this->table,
@@ -124,7 +145,7 @@ public function alterColumnSetNotNull(string $column) : AlterTableFinalStep
         );
     }
 
-    public function alterColumnType(string $column, DataType $type) : AlterTableFinalStep
+    public function alterColumnType(string $column, ColumnType $type) : AlterTableFinalStep
     {
         $cmd = new AlterTableCmd();
         $cmd->setSubtype(AlterTableType::AT_AlterColumnType);
@@ -259,6 +280,28 @@ public function dropConstraintIfExists(string $constraintName, bool $cascade = f
         );
     }
 
+    public function dropInherit(string $table) : AlterTableFinalStep
+    {
+        $cmd = new AlterTableCmd();
+        $cmd->setSubtype(AlterTableType::AT_DropInherit);
+
+        $rangeVar = new RangeVar();
+        $rangeVar->setRelname($table);
+        $rangeVar->setInh(true);
+        $rangeVar->setRelpersistence('p');
+
+        $node = new Node();
+        $node->setRangeVar($rangeVar);
+        $cmd->setDef($node);
+
+        return new self(
+            $this->table,
+            $this->schema,
+            [...$this->commands, $cmd],
+            $this->ifExists,
+        );
+    }
+
     public function enableTrigger(string $trigger) : AlterTableFinalStep
     {
         $cmd = new AlterTableCmd();
@@ -352,11 +395,35 @@ public function renameTo(string $newName) : RenameTableBuilder
         return RenameTableBuilder::renameTo($this->table, $this->schema, $newName, $this->ifExists);
     }
 
+    public function setLogged() : AlterTableLoggingFinalStep
+    {
+        return AlterTableLoggingBuilder::createLogged($this->table, $this->schema, $this->ifExists);
+    }
+
     public function setSchema(string $schema) : AlterTableSchemaBuilder
     {
         return AlterTableSchemaBuilder::create($this->table, $this->schema, $schema, $this->ifExists);
     }
 
+    public function setTablespace(string $tablespace) : AlterTableFinalStep
+    {
+        $cmd = new AlterTableCmd();
+        $cmd->setSubtype(AlterTableType::AT_SetTableSpace);
+        $cmd->setName($tablespace);
+
+        return new self(
+            $this->table,
+            $this->schema,
+            [...$this->commands, $cmd],
+            $this->ifExists,
+        );
+    }
+
+    public function setUnlogged() : AlterTableLoggingFinalStep
+    {
+        return AlterTableLoggingBuilder::createUnlogged($this->table, $this->schema, $this->ifExists);
+    }
+
     public function toAst() : AlterTableStmt
     {
         $stmt = new AlterTableStmt();
@@ -391,44 +458,4 @@ public function toAst() : AlterTableStmt
 
         return $stmt;
     }
-
-    private function parseExpression(string $expression) : Node
-    {
-        $parser = new Parser();
-        $parsed = $parser->parse("SELECT {$expression} AS x");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if ($stmts === null || \count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
-        }
-
-        $firstStmt = $stmts[0];
-        $selectStmt = $firstStmt->getStmt()?->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
-        }
-
-        $targetList = $selectStmt->getTargetList();
-
-        if ($targetList === null || \count($targetList) === 0) {
-            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
-        }
-
-        $firstTarget = $targetList[0];
-        $resTarget = $firstTarget->getResTarget();
-
-        if ($resTarget === null) {
-            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
-        }
-
-        $val = $resTarget->getVal();
-
-        if ($val === null) {
-            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
-        }
-
-        return $val;
-    }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableFinalStep.php
index 77707d9713..5bae42d085 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableFinalStep.php
@@ -5,25 +5,28 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\AlterTable;
 
 use Flow\PostgreSql\Protobuf\AST\AlterTableStmt;
-use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, DataType};
+use Flow\PostgreSql\QueryBuilder\Expression\Expression;
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, ColumnType};
 use Flow\PostgreSql\QueryBuilder\Schema\Constraint\TableConstraint;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterTableFinalStep extends SqlQuery
+interface AlterTableFinalStep extends Sql
 {
     public function addColumn(ColumnDefinition $column) : self;
 
     public function addConstraint(TableConstraint $constraint) : self;
 
+    public function addInherit(string $table) : self;
+
     public function alterColumnDropDefault(string $column) : self;
 
     public function alterColumnDropNotNull(string $column) : self;
 
-    public function alterColumnSetDefault(string $column, string $defaultExpression) : self;
+    public function alterColumnSetDefault(string $column, Expression $defaultExpression) : self;
 
     public function alterColumnSetNotNull(string $column) : self;
 
-    public function alterColumnType(string $column, DataType $type) : self;
+    public function alterColumnType(string $column, ColumnType $type) : self;
 
     public function disableTrigger(string $trigger) : self;
 
@@ -39,6 +42,8 @@ public function dropConstraint(string $constraintName, bool $cascade = false) :
 
     public function dropConstraintIfExists(string $constraintName, bool $cascade = false) : self;
 
+    public function dropInherit(string $table) : self;
+
     public function enableTrigger(string $trigger) : self;
 
     public function enableTriggerAll() : self;
@@ -57,8 +62,14 @@ public function renameConstraint(string $oldName, string $newName) : RenameTable
 
     public function renameTo(string $newName) : RenameTableBuilder;
 
+    public function setLogged() : AlterTableLoggingFinalStep;
+
     public function setSchema(string $schema) : AlterTableSchemaBuilder;
 
+    public function setTablespace(string $tablespace) : self;
+
+    public function setUnlogged() : AlterTableLoggingFinalStep;
+
     public function toAst() : AlterTableStmt;
 
     public function toSql() : string;
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableLoggingBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableLoggingBuilder.php
new file mode 100644
index 0000000000..85cfd2a1ab
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableLoggingBuilder.php
@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\QueryBuilder\Schema\AlterTable;
+
+use Flow\PostgreSql\Protobuf\AST\{AlterTableCmd, AlterTableStmt, AlterTableType, DropBehavior, Node, ObjectType, RangeVar};
+use Flow\PostgreSql\QueryBuilder\AstToSql;
+
+final readonly class AlterTableLoggingBuilder implements AlterTableLoggingFinalStep
+{
+    use AstToSql;
+
+    private function __construct(
+        private string $table,
+        private ?string $schema,
+        private bool $logged,
+        private bool $ifExists,
+    ) {
+    }
+
+    public static function createLogged(string $table, ?string $schema, bool $ifExists) : self
+    {
+        return new self($table, $schema, true, $ifExists);
+    }
+
+    public static function createUnlogged(string $table, ?string $schema, bool $ifExists) : self
+    {
+        return new self($table, $schema, false, $ifExists);
+    }
+
+    public function toAst() : AlterTableStmt
+    {
+        $stmt = new AlterTableStmt();
+        $stmt->setObjtype(ObjectType::OBJECT_TABLE);
+
+        $rangeVar = new RangeVar();
+        $rangeVar->setRelname($this->table);
+        $rangeVar->setInh(true);
+        $rangeVar->setRelpersistence('p');
+
+        if ($this->schema !== null) {
+            $rangeVar->setSchemaname($this->schema);
+        }
+
+        $stmt->setRelation($rangeVar);
+
+        if ($this->ifExists) {
+            $stmt->setMissingOk(true);
+        }
+
+        $cmd = new AlterTableCmd();
+        $cmd->setSubtype($this->logged ? AlterTableType::AT_SetLogged : AlterTableType::AT_SetUnLogged);
+        $cmd->setBehavior(DropBehavior::DROP_RESTRICT);
+
+        $cmdNode = new Node();
+        $cmdNode->setAlterTableCmd($cmd);
+
+        $stmt->setCmds([$cmdNode]);
+
+        return $stmt;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableLoggingFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableLoggingFinalStep.php
new file mode 100644
index 0000000000..5f039ac141
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableLoggingFinalStep.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\QueryBuilder\Schema\AlterTable;
+
+use Flow\PostgreSql\Protobuf\AST\AlterTableStmt;
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+interface AlterTableLoggingFinalStep extends Sql
+{
+    public function toAst() : AlterTableStmt;
+
+    public function toSql() : string;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableSchemaBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableSchemaBuilder.php
index df96492626..5655a7895b 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableSchemaBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/AlterTableSchemaBuilder.php
@@ -5,9 +5,12 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\AlterTable;
 
 use Flow\PostgreSql\Protobuf\AST\{AlterObjectSchemaStmt, ObjectType, RangeVar};
+use Flow\PostgreSql\QueryBuilder\AstToSql;
 
 final readonly class AlterTableSchemaBuilder
 {
+    use AstToSql;
+
     private function __construct(
         private string $table,
         private ?string $schema,
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/RenameTableBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/RenameTableBuilder.php
index e2750931c7..aedbcc9d99 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/RenameTableBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/AlterTable/RenameTableBuilder.php
@@ -5,9 +5,12 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\AlterTable;
 
 use Flow\PostgreSql\Protobuf\AST\{ObjectType, RangeVar, RenameStmt};
+use Flow\PostgreSql\QueryBuilder\{AstToSql, Sql};
 
-final readonly class RenameTableBuilder
+final readonly class RenameTableBuilder implements Sql
 {
+    use AstToSql;
+
     private function __construct(
         private string $table,
         private ?string $schema,
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/ColumnDefinition.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/ColumnDefinition.php
index 0cca182837..5b20a03612 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/ColumnDefinition.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/ColumnDefinition.php
@@ -4,11 +4,10 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema;
 
-use Flow\PostgreSql\Parser;
-use Flow\PostgreSql\Protobuf\AST\{ColumnDef, ConstrType, Constraint, Node, RangeVar};
-use Flow\PostgreSql\Protobuf\AST\PBString;
-use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+use Flow\PostgreSql\Protobuf\AST\{A_Const, Boolean as PBBoolean, ColumnDef, ConstrType, Constraint, Integer as PBInteger, Node, PBFloat, PBString, RangeVar};
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
 use Flow\PostgreSql\QueryBuilder\Expression\Expression;
+use Flow\PostgreSql\Schema\IdentityGeneration;
 
 final readonly class ColumnDefinition
 {
@@ -17,25 +16,25 @@
      */
     private function __construct(
         private string $name,
-        private DataType $type,
+        private ColumnType $type,
         private bool $notNull = false,
         private ?Node $defaultValue = null,
-        private ?string $identity = null,
+        private ?IdentityGeneration $identity = null,
         private ?Node $generatedExpression = null,
         private array $constraints = [],
     ) {
     }
 
-    public static function create(string $name, DataType $type) : self
+    public static function create(string $name, ColumnType $type) : self
     {
         return new self($name, $type);
     }
 
-    public function check(string $expression) : self
+    public function check(Condition $condition) : self
     {
         $constraint = new Constraint();
         $constraint->setContype(ConstrType::CONSTR_CHECK);
-        $constraint->setRawExpr($this->parseExpression($expression));
+        $constraint->setRawExpr($condition->toAst());
 
         return new self(
             $this->name,
@@ -65,20 +64,20 @@ public function default(bool|float|int|string|Expression|null $value) : self
         );
     }
 
-    public function defaultRaw(string $expression) : self
+    public function defaultRaw(Expression $expression) : self
     {
         return new self(
             $this->name,
             $this->type,
             $this->notNull,
-            $this->parseExpression($expression),
+            $expression->toAst(),
             $this->identity,
             $this->generatedExpression,
             $this->constraints,
         );
     }
 
-    public function generatedAs(string $expression) : self
+    public function generatedAs(Expression $expression) : self
     {
         return new self(
             $this->name,
@@ -86,21 +85,19 @@ public function generatedAs(string $expression) : self
             $this->notNull,
             $this->defaultValue,
             $this->identity,
-            $this->parseExpression($expression),
+            $expression->toAst(),
             $this->constraints,
         );
     }
 
-    public function identity(string $type = 'ALWAYS') : self
+    public function identity(IdentityGeneration $type = IdentityGeneration::ALWAYS) : self
     {
-        $identityChar = \strtoupper($type) === 'ALWAYS' ? 'a' : 'd';
-
         return new self(
             $this->name,
             $this->type,
             $this->notNull,
             $this->defaultValue,
-            $identityChar,
+            $type,
             $this->generatedExpression,
             $this->constraints,
         );
@@ -184,10 +181,6 @@ public function toAst() : ColumnDef
         $columnDef->setTypeName($this->type->toAst());
         $columnDef->setIsLocal(true);
 
-        if ($this->identity !== null) {
-            $columnDef->setIdentity($this->identity);
-        }
-
         $allConstraints = [];
 
         if ($this->notNull) {
@@ -207,6 +200,13 @@ public function toAst() : ColumnDef
             $allConstraints[] = $constraint;
         }
 
+        if ($this->identity !== null) {
+            $identityConstraint = new Constraint();
+            $identityConstraint->setContype(ConstrType::CONSTR_IDENTITY);
+            $identityConstraint->setGeneratedWhen($this->identity->value);
+            $allConstraints[] = $identityConstraint;
+        }
+
         if ($this->generatedExpression !== null) {
             $columnDef->setGenerated('s');
 
@@ -251,50 +251,26 @@ public function unique() : self
 
     private function createLiteralNode(bool|float|int|string|null $value) : Node
     {
-        $parser = new Parser();
-
-        $literal = match (true) {
-            $value === null => 'NULL',
-            \is_bool($value) => $value ? 'TRUE' : 'FALSE',
-            \is_string($value) => "'" . \str_replace("'", "''", $value) . "'",
-            default => (string) $value,
-        };
-
-        $parsed = $parser->parse("SELECT {$literal} AS x");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if ($stmts === null || \count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
+        $aConst = new A_Const();
+
+        if ($value === null) {
+            $aConst->setIsnull(true);
+        } elseif (\is_bool($value)) {
+            /** @phpstan-ignore-next-line */
+            $aConst->setBoolval((new PBBoolean())->setBoolval($value));
+        } elseif (\is_int($value)) {
+            /** @phpstan-ignore-next-line */
+            $aConst->setIval((new PBInteger())->setIval($value));
+        } elseif (\is_float($value)) {
+            $aConst->setFval((new PBFloat())->setFval((string) $value));
+        } else {
+            $aConst->setSval((new PBString())->setSval($value));
         }
 
-        $firstStmt = $stmts[0];
-        $selectStmt = $firstStmt->getStmt()?->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
-        }
-
-        $targetList = $selectStmt->getTargetList();
-
-        if ($targetList === null || \count($targetList) === 0) {
-            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
-        }
-
-        $firstTarget = $targetList[0];
-        $resTarget = $firstTarget->getResTarget();
-
-        if ($resTarget === null) {
-            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
-        }
-
-        $val = $resTarget->getVal();
-
-        if ($val === null) {
-            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
-        }
+        $node = new Node();
+        $node->setAConst($aConst);
 
-        return $val;
+        return $node;
     }
 
     private function createStringNode(string $value) : Node
@@ -307,44 +283,4 @@ private function createStringNode(string $value) : Node
 
         return $node;
     }
-
-    private function parseExpression(string $expression) : Node
-    {
-        $parser = new Parser();
-        $parsed = $parser->parse("SELECT {$expression} AS x");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if ($stmts === null || \count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
-        }
-
-        $firstStmt = $stmts[0];
-        $selectStmt = $firstStmt->getStmt()?->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
-        }
-
-        $targetList = $selectStmt->getTargetList();
-
-        if ($targetList === null || \count($targetList) === 0) {
-            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
-        }
-
-        $firstTarget = $targetList[0];
-        $resTarget = $firstTarget->getResTarget();
-
-        if ($resTarget === null) {
-            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
-        }
-
-        $val = $resTarget->getVal();
-
-        if ($val === null) {
-            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
-        }
-
-        return $val;
-    }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DataType.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/ColumnType.php
similarity index 51%
rename from src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DataType.php
rename to src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/ColumnType.php
index f623b0c949..2022d1df7e 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DataType.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/ColumnType.php
@@ -7,71 +7,69 @@
 use Flow\PostgreSql\Protobuf\AST\{A_Const, Integer, Node, PBString, TypeName};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
 
-final readonly class DataType
+/**
+ * @phpstan-type ColumnTypeShape = array{name: string, schema: ?string, precision: ?int, scale: ?int, is_array: bool}
+ */
+final readonly class ColumnType
 {
-    /**
-     * @param list<string> $names
-     * @param list<int> $typmods
-     * @param list<int> $arrayBounds
-     */
     private function __construct(
-        private array $names,
-        private array $typmods = [],
-        private array $arrayBounds = [],
+        private string $name,
+        private ?string $schema = null,
+        private ?int $precision = null,
+        private ?int $scale = null,
+        private bool $isArray = false,
     ) {
     }
 
     public static function array(self $elementType) : self
     {
         return new self(
-            $elementType->names,
-            $elementType->typmods,
-            [-1],
+            $elementType->name,
+            $elementType->schema,
+            $elementType->precision,
+            $elementType->scale,
+            true,
         );
     }
 
     public static function bigint() : self
     {
-        return new self(['pg_catalog', 'int8']);
+        return new self('int8', 'pg_catalog');
     }
 
     public static function bigserial() : self
     {
-        return new self(['bigserial']);
+        return new self('bigserial');
     }
 
     public static function boolean() : self
     {
-        return new self(['pg_catalog', 'bool']);
+        return new self('bool', 'pg_catalog');
     }
 
     public static function bytea() : self
     {
-        return new self(['pg_catalog', 'bytea']);
+        return new self('bytea', 'pg_catalog');
     }
 
     public static function char(int $length) : self
     {
-        return new self(['pg_catalog', 'bpchar'], [$length]);
+        return new self('bpchar', 'pg_catalog', $length);
     }
 
     public static function cidr() : self
     {
-        return new self(['pg_catalog', 'cidr']);
+        return new self('cidr', 'pg_catalog');
     }
 
     public static function custom(string $typeName, ?string $schema = null) : self
     {
-        if ($schema !== null) {
-            return new self([$schema, $typeName]);
-        }
-
-        return new self([$typeName]);
+        return new self($typeName, $schema);
     }
 
     public static function date() : self
     {
-        return new self(['pg_catalog', 'date']);
+        return new self('date', 'pg_catalog');
     }
 
     public static function decimal(?int $precision = null, ?int $scale = null) : self
@@ -81,7 +79,21 @@ public static function decimal(?int $precision = null, ?int $scale = null) : sel
 
     public static function doublePrecision() : self
     {
-        return new self(['pg_catalog', 'float8']);
+        return new self('float8', 'pg_catalog');
+    }
+
+    /**
+     * @param ColumnTypeShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            schema: $data['schema'] ?? null,
+            precision: $data['precision'] ?? null,
+            scale: $data['scale'] ?? null,
+            isArray: $data['is_array'] ?? false,
+        );
     }
 
     public static function fromAst(TypeName $typeName) : self
@@ -104,6 +116,9 @@ public static function fromAst(TypeName $typeName) : self
             $names[] = $stringNode->getSval();
         }
 
+        $schema = \count($names) > 1 ? $names[0] : null;
+        $name = $names[\count($names) - 1];
+
         $typmods = [];
         $typmodsNodes = $typeName->getTypmods();
 
@@ -120,7 +135,7 @@ public static function fromAst(TypeName $typeName) : self
             }
         }
 
-        $arrayBounds = [];
+        $isArray = false;
         $arrayBoundsNodes = $typeName->getArrayBounds();
 
         foreach ($arrayBoundsNodes as $boundNode) {
@@ -130,126 +145,134 @@ public static function fromAst(TypeName $typeName) : self
                 $ival = $aConst->getIval();
 
                 if ($ival !== null) {
-                    /** @phpstan-ignore method.nonObject (protobuf PHPDoc says int but getIval() actually returns Integer object) */
-                    $arrayBounds[] = $ival->getIval();
+                    $isArray = true;
+
+                    continue;
                 }
             }
+
+            $integer = $boundNode->getInteger();
+
+            if ($integer !== null) {
+                $isArray = true;
+            }
         }
 
-        return new self($names, $typmods, $arrayBounds);
+        return new self(
+            $name,
+            $schema,
+            $typmods[0] ?? null,
+            $typmods[1] ?? null,
+            $isArray,
+        );
     }
 
     public static function inet() : self
     {
-        return new self(['pg_catalog', 'inet']);
+        return new self('inet', 'pg_catalog');
     }
 
     public static function integer() : self
     {
-        return new self(['pg_catalog', 'int4']);
+        return new self('int4', 'pg_catalog');
     }
 
     public static function interval() : self
     {
-        return new self(['pg_catalog', 'interval']);
+        return new self('interval', 'pg_catalog');
     }
 
     public static function json() : self
     {
-        return new self(['pg_catalog', 'json']);
+        return new self('json', 'pg_catalog');
     }
 
     public static function jsonb() : self
     {
-        return new self(['pg_catalog', 'jsonb']);
+        return new self('jsonb', 'pg_catalog');
     }
 
     public static function macaddr() : self
     {
-        return new self(['pg_catalog', 'macaddr']);
+        return new self('macaddr', 'pg_catalog');
     }
 
     public static function numeric(?int $precision = null, ?int $scale = null) : self
     {
-        $typmods = [];
-
-        if ($precision !== null) {
-            $typmods[] = $precision;
-
-            if ($scale !== null) {
-                $typmods[] = $scale;
-            }
-        }
-
-        return new self(['pg_catalog', 'numeric'], $typmods);
+        return new self('numeric', 'pg_catalog', $precision, $scale);
     }
 
     public static function real() : self
     {
-        return new self(['pg_catalog', 'float4']);
+        return new self('float4', 'pg_catalog');
     }
 
     public static function serial() : self
     {
-        return new self(['serial']);
+        return new self('serial');
     }
 
     public static function smallint() : self
     {
-        return new self(['pg_catalog', 'int2']);
+        return new self('int2', 'pg_catalog');
     }
 
     public static function smallserial() : self
     {
-        return new self(['smallserial']);
+        return new self('smallserial');
     }
 
     public static function text() : self
     {
-        return new self(['pg_catalog', 'text']);
+        return new self('text', 'pg_catalog');
     }
 
     public static function time(?int $precision = null) : self
     {
-        $typmods = [];
-
-        if ($precision !== null) {
-            $typmods[] = $precision;
-        }
-
-        return new self(['pg_catalog', 'time'], $typmods);
+        return new self('time', 'pg_catalog', $precision);
     }
 
     public static function timestamp(?int $precision = null) : self
     {
-        $typmods = [];
-
-        if ($precision !== null) {
-            $typmods[] = $precision;
-        }
-
-        return new self(['pg_catalog', 'timestamp'], $typmods);
+        return new self('timestamp', 'pg_catalog', $precision);
     }
 
     public static function timestamptz(?int $precision = null) : self
     {
-        $typmods = [];
-
-        if ($precision !== null) {
-            $typmods[] = $precision;
-        }
-
-        return new self(['pg_catalog', 'timestamptz'], $typmods);
+        return new self('timestamptz', 'pg_catalog', $precision);
     }
 
     public static function uuid() : self
     {
-        return new self(['pg_catalog', 'uuid']);
+        return new self('uuid', 'pg_catalog');
     }
 
     public static function varchar(int $length) : self
     {
-        return new self(['pg_catalog', 'varchar'], [$length]);
+        return new self('varchar', 'pg_catalog', $length);
+    }
+
+    public function isEqual(self $other) : bool
+    {
+        return self::normalizedName($this->name) === self::normalizedName($other->name)
+            && $this->normalizedSchema() === $other->normalizedSchema()
+            && $this->precision === $other->precision
+            && $this->scale === $other->scale
+            && $this->isArray === $other->isArray;
+    }
+
+    /**
+     * @return ColumnTypeShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'schema' => $this->normalizedSchema(),
+            'precision' => $this->precision,
+            'scale' => $this->scale,
+            'is_array' => $this->isArray,
+        ];
     }
 
     public function toAst() : TypeName
@@ -258,30 +281,29 @@ public function toAst() : TypeName
 
         $names = [];
 
-        foreach ($this->names as $name) {
-            $names[] = $this->createStringNode($name);
+        if ($this->schema !== null) {
+            $names[] = $this->createStringNode($this->schema);
         }
 
+        $names[] = $this->createStringNode($this->name);
         $typeName->setNames($names);
 
-        if ($this->typmods !== []) {
-            $typmods = [];
+        $typmods = [];
+
+        if ($this->precision !== null) {
+            $typmods[] = $this->createIntegerConstNode($this->precision);
 
-            foreach ($this->typmods as $typmod) {
-                $typmods[] = $this->createIntegerConstNode($typmod);
+            if ($this->scale !== null) {
+                $typmods[] = $this->createIntegerConstNode($this->scale);
             }
+        }
 
+        if ($typmods !== []) {
             $typeName->setTypmods($typmods);
         }
 
-        if ($this->arrayBounds !== []) {
-            $arrayBounds = [];
-
-            foreach ($this->arrayBounds as $bound) {
-                $arrayBounds[] = $this->createIntegerConstNode($bound);
-            }
-
-            $typeName->setArrayBounds($arrayBounds);
+        if ($this->isArray) {
+            $typeName->setArrayBounds([$this->createIntegerConstNode(-1)]);
         }
 
         return $typeName;
@@ -311,4 +333,26 @@ private function createStringNode(string $value) : Node
 
         return $node;
     }
+
+    private function normalizedSchema() : ?string
+    {
+        if ($this->schema === 'pg_catalog') {
+            return null;
+        }
+
+        return $this->schema;
+    }
+
+    /**
+     * Serial types are syntactic sugar — PostgreSQL stores them as their base integer types.
+     */
+    private static function normalizedName(string $name) : string
+    {
+        return match ($name) {
+            'bigserial' => 'int8',
+            'serial' => 'int4',
+            'smallserial' => 'int2',
+            default => $name,
+        };
+    }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/CheckConstraint.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/CheckConstraint.php
index 3eb09717dc..3ca8f0b144 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/CheckConstraint.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/CheckConstraint.php
@@ -4,32 +4,31 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Constraint;
 
-use Flow\PostgreSql\Parser;
-use Flow\PostgreSql\Protobuf\AST\{ConstrType, Constraint, Node};
-use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+use Flow\PostgreSql\Protobuf\AST\{ConstrType, Constraint};
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
 
 final readonly class CheckConstraint implements TableConstraint
 {
     private function __construct(
-        private string $expression,
+        private Condition $condition,
         private ?string $name = null,
         private bool $noInherit = false,
     ) {
     }
 
-    public static function create(string $expression) : self
+    public static function create(Condition $condition) : self
     {
-        return new self($expression);
+        return new self($condition);
     }
 
     public function name(string $name) : self
     {
-        return new self($this->expression, $name, $this->noInherit);
+        return new self($this->condition, $name, $this->noInherit);
     }
 
     public function noInherit() : self
     {
-        return new self($this->expression, $this->name, true);
+        return new self($this->condition, $this->name, true);
     }
 
     public function toAst() : Constraint
@@ -45,48 +44,8 @@ public function toAst() : Constraint
             $constraint->setIsNoInherit(true);
         }
 
-        $constraint->setRawExpr($this->parseExpression($this->expression));
+        $constraint->setRawExpr($this->condition->toAst());
 
         return $constraint;
     }
-
-    private function parseExpression(string $expression) : Node
-    {
-        $parser = new Parser();
-        $parsed = $parser->parse("SELECT {$expression} AS x");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if ($stmts === null || \count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
-        }
-
-        $firstStmt = $stmts[0];
-        $selectStmt = $firstStmt->getStmt()?->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
-        }
-
-        $targetList = $selectStmt->getTargetList();
-
-        if ($targetList === null || \count($targetList) === 0) {
-            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
-        }
-
-        $firstTarget = $targetList[0];
-        $resTarget = $firstTarget->getResTarget();
-
-        if ($resTarget === null) {
-            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
-        }
-
-        $val = $resTarget->getVal();
-
-        if ($val === null) {
-            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
-        }
-
-        return $val;
-    }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/ExcludeConstraint.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/ExcludeConstraint.php
index f5286f81d0..1ab12505f8 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/ExcludeConstraint.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/ExcludeConstraint.php
@@ -4,21 +4,21 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Constraint;
 
-use Flow\PostgreSql\Parser;
 use Flow\PostgreSql\Protobuf\AST\{ConstrType, Constraint, Node, PBString};
 use Flow\PostgreSql\Protobuf\AST\PBList;
-use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
+use Flow\PostgreSql\QueryBuilder\Expression\Expression;
 
 final readonly class ExcludeConstraint implements TableConstraint
 {
     /**
-     * @param list<array{element: string, operator: string}> $elements
+     * @param list<array{element: Expression, operator: string}> $elements
      */
     private function __construct(
         private string $accessMethod,
         private array $elements = [],
         private ?string $name = null,
-        private ?string $whereClause = null,
+        private ?Condition $whereCondition = null,
     ) {
     }
 
@@ -27,13 +27,13 @@ public static function create(string $accessMethod = 'gist') : self
         return new self($accessMethod);
     }
 
-    public function element(string $element, string $operator) : self
+    public function element(Expression $element, string $operator) : self
     {
         return new self(
             $this->accessMethod,
             [...$this->elements, ['element' => $element, 'operator' => $operator]],
             $this->name,
-            $this->whereClause,
+            $this->whereCondition,
         );
     }
 
@@ -43,7 +43,7 @@ public function name(string $name) : self
             $this->accessMethod,
             $this->elements,
             $name,
-            $this->whereClause,
+            $this->whereCondition,
         );
     }
 
@@ -61,27 +61,27 @@ public function toAst() : Constraint
             $exclusions = [];
 
             foreach ($this->elements as $element) {
-                $exclusions[] = $this->parseExpression($element['element']);
+                $exclusions[] = $element['element']->toAst();
                 $exclusions[] = $this->createOperatorNode($element['operator']);
             }
 
             $constraint->setExclusions($exclusions);
         }
 
-        if ($this->whereClause !== null) {
-            $constraint->setWhereClause($this->parseExpression($this->whereClause));
+        if ($this->whereCondition !== null) {
+            $constraint->setWhereClause($this->whereCondition->toAst());
         }
 
         return $constraint;
     }
 
-    public function where(string $whereClause) : self
+    public function where(Condition $condition) : self
     {
         return new self(
             $this->accessMethod,
             $this->elements,
             $this->name,
-            $whereClause,
+            $condition,
         );
     }
 
@@ -104,44 +104,4 @@ private function createOperatorNode(string $operator) : Node
 
         return $resultNode;
     }
-
-    private function parseExpression(string $expression) : Node
-    {
-        $parser = new Parser();
-        $parsed = $parser->parse("SELECT {$expression} AS x");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if ($stmts === null || \count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
-        }
-
-        $firstStmt = $stmts[0];
-        $selectStmt = $firstStmt->getStmt()?->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
-        }
-
-        $targetList = $selectStmt->getTargetList();
-
-        if ($targetList === null || \count($targetList) === 0) {
-            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
-        }
-
-        $firstTarget = $targetList[0];
-        $resTarget = $firstTarget->getResTarget();
-
-        if ($resTarget === null) {
-            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
-        }
-
-        $val = $resTarget->getVal();
-
-        if ($val === null) {
-            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
-        }
-
-        return $val;
-    }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/ForeignKeyConstraint.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/ForeignKeyConstraint.php
index 7b11e8c57e..779a6fd5ca 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/ForeignKeyConstraint.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Constraint/ForeignKeyConstraint.php
@@ -5,6 +5,7 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Constraint;
 
 use Flow\PostgreSql\Protobuf\AST\{ConstrType, Constraint, Node, PBString, RangeVar};
+use Flow\PostgreSql\QueryBuilder\QualifiedIdentifier;
 use Flow\PostgreSql\QueryBuilder\Schema\ReferentialAction;
 
 final readonly class ForeignKeyConstraint implements TableConstraint
@@ -32,7 +33,9 @@ private function __construct(
      */
     public static function create(array $columns, string $referenceTable, array $referenceColumns = []) : self
     {
-        return new self($columns, $referenceTable, $referenceColumns);
+        $identifier = QualifiedIdentifier::parse($referenceTable);
+
+        return new self($columns, $identifier->name(), $referenceColumns, $identifier->schema());
     }
 
     public function deferrable(bool $initiallyDeferred = false) : self
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateSequence/CreateSequenceFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateSequence/CreateSequenceFinalStep.php
index 30b6703057..88f422cf3d 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateSequence/CreateSequenceFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateSequence/CreateSequenceFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\CreateSequence;
 
 use Flow\PostgreSql\Protobuf\AST\CreateSeqStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateSequenceFinalStep extends SqlQuery
+interface CreateSequenceFinalStep extends Sql
 {
     public function toAst() : CreateSeqStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateTable/CreateTableFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateTable/CreateTableFinalStep.php
index 03bbb0f877..e73007fa68 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateTable/CreateTableFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateTable/CreateTableFinalStep.php
@@ -6,9 +6,9 @@
 
 use Flow\PostgreSql\Protobuf\AST\CreateStmt;
 use Flow\PostgreSql\QueryBuilder\Schema\Constraint\TableConstraint;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateTableFinalStep extends SqlQuery
+interface CreateTableFinalStep extends Sql
 {
     public function constraint(TableConstraint $constraint) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateTableAs/CreateTableAsFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateTableAs/CreateTableAsFinalStep.php
index 615db78e77..941bed19d1 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateTableAs/CreateTableAsFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/CreateTableAs/CreateTableAsFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\CreateTableAs;
 
 use Flow\PostgreSql\Protobuf\AST\CreateTableAsStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateTableAsFinalStep extends SqlQuery
+interface CreateTableAsFinalStep extends Sql
 {
     public function columnNames(string ...$names) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/CreateDatabaseBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/CreateDatabaseBuilder.php
new file mode 100644
index 0000000000..557339630c
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/CreateDatabaseBuilder.php
@@ -0,0 +1,190 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\QueryBuilder\Schema\Database;
+
+use Flow\PostgreSql\Protobuf\AST\{CreatedbStmt, DefElem, Integer, Node, PBString};
+use Flow\PostgreSql\QueryBuilder\AstToSql;
+
+final readonly class CreateDatabaseBuilder implements CreateDatabaseOptionsStep
+{
+    use AstToSql;
+
+    /**
+     * @param list<array{name: string, arg: ?Node}> $options
+     */
+    private function __construct(
+        private string $name,
+        private array $options = [],
+    ) {
+    }
+
+    public static function create(string $name) : CreateDatabaseOptionsStep
+    {
+        return new self($name);
+    }
+
+    public function allowConnections(bool $allow) : self
+    {
+        return $this->withOption('allow_connections', $this->booleanNode($allow));
+    }
+
+    public function builtinLocale(string $locale) : self
+    {
+        return $this->withOption('builtin_locale', $this->stringNode($locale));
+    }
+
+    public function collationVersion(string $version) : self
+    {
+        return $this->withOption('collation_version', $this->stringNode($version));
+    }
+
+    public function connectionLimit(int $limit) : self
+    {
+        return $this->withOption('connection_limit', $this->integerNode($limit));
+    }
+
+    public function encoding(string $encoding) : self
+    {
+        return $this->withOption('encoding', $this->stringNode($encoding));
+    }
+
+    public function icuLocale(string $locale) : self
+    {
+        return $this->withOption('icu_locale', $this->stringNode($locale));
+    }
+
+    public function icuRules(string $rules) : self
+    {
+        return $this->withOption('icu_rules', $this->stringNode($rules));
+    }
+
+    public function ifNotExists() : self
+    {
+        return $this->withOption('if_not_exists', $this->booleanNode(true));
+    }
+
+    public function isTemplate(bool $template) : self
+    {
+        return $this->withOption('is_template', $this->booleanNode($template));
+    }
+
+    public function lcCollate(string $collate) : self
+    {
+        return $this->withOption('lc_collate', $this->stringNode($collate));
+    }
+
+    public function lcCtype(string $ctype) : self
+    {
+        return $this->withOption('lc_ctype', $this->stringNode($ctype));
+    }
+
+    public function locale(string $locale) : self
+    {
+        return $this->withOption('locale', $this->stringNode($locale));
+    }
+
+    public function localeProvider(string $provider) : self
+    {
+        return $this->withOption('locale_provider', $this->stringNode($provider));
+    }
+
+    public function oid(int $oid) : self
+    {
+        return $this->withOption('oid', $this->integerNode($oid));
+    }
+
+    public function owner(string $role) : self
+    {
+        return $this->withOption('owner', $this->stringNode($role));
+    }
+
+    public function strategy(string $strategy) : self
+    {
+        return $this->withOption('strategy', $this->stringNode($strategy));
+    }
+
+    public function tablespace(string $name) : self
+    {
+        return $this->withOption('tablespace', $this->stringNode($name));
+    }
+
+    public function template(string $name) : self
+    {
+        return $this->withOption('template', $this->stringNode($name));
+    }
+
+    public function toAst() : CreatedbStmt
+    {
+        $stmt = new CreatedbStmt();
+        $stmt->setDbname($this->name);
+
+        $optionNodes = [];
+
+        foreach ($this->options as $option) {
+            $defElem = new DefElem();
+            $defElem->setDefname($option['name']);
+
+            if ($option['arg'] !== null) {
+                $defElem->setArg($option['arg']);
+            }
+
+            $node = new Node();
+            $node->setDefElem($defElem);
+            $optionNodes[] = $node;
+        }
+
+        if ($optionNodes !== []) {
+            $stmt->setOptions($optionNodes);
+        }
+
+        return $stmt;
+    }
+
+    private function booleanNode(bool $value) : Node
+    {
+        $integer = new Integer();
+        $integer->setIval($value ? 1 : 0);
+
+        $node = new Node();
+        /** @phpstan-ignore argument.type (protobuf PHPDoc says int but actually expects Integer) */
+        $node->setInteger($integer);
+
+        return $node;
+    }
+
+    private function integerNode(int $value) : Node
+    {
+        $integer = new Integer();
+        $integer->setIval($value);
+
+        $node = new Node();
+        /** @phpstan-ignore argument.type (protobuf PHPDoc says int but actually expects Integer) */
+        $node->setInteger($integer);
+
+        return $node;
+    }
+
+    private function stringNode(string $value) : Node
+    {
+        $str = new PBString();
+        $str->setSval($value);
+
+        $node = new Node();
+        $node->setString($str);
+
+        return $node;
+    }
+
+    private function withOption(string $name, ?Node $arg) : self
+    {
+        $newOptions = $this->options;
+        $newOptions[] = ['name' => $name, 'arg' => $arg];
+
+        return new self(
+            $this->name,
+            $newOptions,
+        );
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/CreateDatabaseFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/CreateDatabaseFinalStep.php
new file mode 100644
index 0000000000..384dc5fa9b
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/CreateDatabaseFinalStep.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\QueryBuilder\Schema\Database;
+
+use Flow\PostgreSql\Protobuf\AST\CreatedbStmt;
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+interface CreateDatabaseFinalStep extends Sql
+{
+    public function toAst() : CreatedbStmt;
+
+    public function toSql() : string;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/CreateDatabaseOptionsStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/CreateDatabaseOptionsStep.php
new file mode 100644
index 0000000000..70040dd5fa
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/CreateDatabaseOptionsStep.php
@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\QueryBuilder\Schema\Database;
+
+interface CreateDatabaseOptionsStep extends CreateDatabaseFinalStep
+{
+    public function allowConnections(bool $allow) : self;
+
+    public function builtinLocale(string $locale) : self;
+
+    public function collationVersion(string $version) : self;
+
+    public function connectionLimit(int $limit) : self;
+
+    public function encoding(string $encoding) : self;
+
+    public function icuLocale(string $locale) : self;
+
+    public function icuRules(string $rules) : self;
+
+    public function ifNotExists() : self;
+
+    public function isTemplate(bool $template) : self;
+
+    public function lcCollate(string $collate) : self;
+
+    public function lcCtype(string $ctype) : self;
+
+    public function locale(string $locale) : self;
+
+    public function localeProvider(string $provider) : self;
+
+    public function oid(int $oid) : self;
+
+    public function owner(string $role) : self;
+
+    public function strategy(string $strategy) : self;
+
+    public function tablespace(string $name) : self;
+
+    public function template(string $name) : self;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/DropDatabaseBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/DropDatabaseBuilder.php
new file mode 100644
index 0000000000..34842f8c48
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/DropDatabaseBuilder.php
@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\QueryBuilder\Schema\Database;
+
+use Flow\PostgreSql\Protobuf\AST\{DefElem, DropdbStmt, Node};
+use Flow\PostgreSql\QueryBuilder\AstToSql;
+
+final readonly class DropDatabaseBuilder implements DropDatabaseFinalStep
+{
+    use AstToSql;
+
+    private function __construct(
+        private string $name,
+        private bool $ifExists = false,
+        private bool $force = false,
+    ) {
+    }
+
+    public static function create(string $name) : DropDatabaseFinalStep
+    {
+        return new self($name);
+    }
+
+    public function force() : self
+    {
+        return new self($this->name, $this->ifExists, true);
+    }
+
+    public function ifExists() : self
+    {
+        return new self($this->name, true, $this->force);
+    }
+
+    public function toAst() : DropdbStmt
+    {
+        $stmt = new DropdbStmt();
+        $stmt->setDbname($this->name);
+        $stmt->setMissingOk($this->ifExists);
+
+        if ($this->force) {
+            $defElem = new DefElem();
+            $defElem->setDefname('force');
+            $node = new Node();
+            $node->setDefElem($defElem);
+            $stmt->setOptions([$node]);
+        }
+
+        return $stmt;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/DropDatabaseFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/DropDatabaseFinalStep.php
new file mode 100644
index 0000000000..d2f791a328
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Database/DropDatabaseFinalStep.php
@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\QueryBuilder\Schema\Database;
+
+use Flow\PostgreSql\Protobuf\AST\DropdbStmt;
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+interface DropDatabaseFinalStep extends Sql
+{
+    public function force() : self;
+
+    public function ifExists() : self;
+
+    public function toAst() : DropdbStmt;
+
+    public function toSql() : string;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainActionStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainActionStep.php
index 1447c9adf9..2904109ba9 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainActionStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainActionStep.php
@@ -4,9 +4,12 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Domain;
 
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
+use Flow\PostgreSql\QueryBuilder\Expression\Expression;
+
 interface AlterDomainActionStep
 {
-    public function addConstraint(string $name, string $expression) : AlterDomainFinalStep;
+    public function addConstraint(string $name, Condition $condition) : AlterDomainFinalStep;
 
     public function dropConstraint(string $name) : AlterDomainFinalStep;
 
@@ -14,7 +17,7 @@ public function dropDefault() : AlterDomainFinalStep;
 
     public function dropNotNull() : AlterDomainFinalStep;
 
-    public function setDefault(string $expression) : AlterDomainFinalStep;
+    public function setDefault(Expression $expression) : AlterDomainFinalStep;
 
     public function setNotNull() : AlterDomainFinalStep;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainBuilder.php
index b046286c69..09200d3ef5 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainBuilder.php
@@ -4,10 +4,10 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Domain;
 
-use Flow\PostgreSql\Parser;
 use Flow\PostgreSql\Protobuf\AST\{AlterDomainStmt, ConstrType, Constraint, DropBehavior, Node, PBString};
 use Flow\PostgreSql\QueryBuilder\{AstToSql, QualifiedIdentifier};
-use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
+use Flow\PostgreSql\QueryBuilder\Expression\Expression;
 
 final readonly class AlterDomainBuilder implements AlterDomainActionStep, AlterDomainFinalStep
 {
@@ -18,7 +18,7 @@ private function __construct(
         private ?string $schema = null,
         private string $subtype = '',
         private ?string $constraintName = null,
-        private ?string $expression = null,
+        private ?Expression $expression = null,
         private int $behavior = DropBehavior::DROP_RESTRICT,
         private bool $missingOk = false,
     ) {
@@ -31,14 +31,14 @@ public static function create(string $name) : AlterDomainActionStep
         return new self($identifier->name(), $identifier->schema());
     }
 
-    public function addConstraint(string $name, string $expression) : AlterDomainFinalStep
+    public function addConstraint(string $name, Condition $condition) : AlterDomainFinalStep
     {
         return new self(
             $this->name,
             $this->schema,
             'C',
             $name,
-            $expression,
+            $condition,
             $this->behavior,
             $this->missingOk,
         );
@@ -122,7 +122,7 @@ public function restrict() : AlterDomainFinalStep
         );
     }
 
-    public function setDefault(string $expression) : AlterDomainFinalStep
+    public function setDefault(Expression $expression) : AlterDomainFinalStep
     {
         return new self(
             $this->name,
@@ -178,7 +178,7 @@ public function toAst() : AlterDomainStmt
         if ($this->subtype === 'C' && $this->expression !== null) {
             $constraint = new Constraint();
             $constraint->setContype(ConstrType::CONSTR_CHECK);
-            $constraint->setRawExpr($this->parseExpression($this->expression));
+            $constraint->setRawExpr($this->expression->toAst());
 
             if ($this->constraintName !== null) {
                 $constraint->setConname($this->constraintName);
@@ -188,7 +188,7 @@ public function toAst() : AlterDomainStmt
             $defNode->setConstraint($constraint);
             $stmt->setDef($defNode);
         } elseif ($this->subtype === 'T' && $this->expression !== null) {
-            $stmt->setDef($this->parseExpression($this->expression));
+            $stmt->setDef($this->expression->toAst());
         }
 
         $stmt->setBehavior($this->behavior);
@@ -209,44 +209,4 @@ public function validateConstraint(string $name) : AlterDomainFinalStep
             $this->missingOk,
         );
     }
-
-    private function parseExpression(string $expression) : Node
-    {
-        $parser = new Parser();
-        $parsed = $parser->parse("SELECT {$expression} AS x");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if ($stmts === null || \count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
-        }
-
-        $firstStmt = $stmts[0];
-        $selectStmt = $firstStmt->getStmt()?->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
-        }
-
-        $targetList = $selectStmt->getTargetList();
-
-        if ($targetList === null || \count($targetList) === 0) {
-            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
-        }
-
-        $firstTarget = $targetList[0];
-        $resTarget = $firstTarget->getResTarget();
-
-        if ($resTarget === null) {
-            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
-        }
-
-        $val = $resTarget->getVal();
-
-        if ($val === null) {
-            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
-        }
-
-        return $val;
-    }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainFinalStep.php
index 52806238a8..cec729ee6f 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/AlterDomainFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Domain;
 
 use Flow\PostgreSql\Protobuf\AST\AlterDomainStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterDomainFinalStep extends SqlQuery
+interface AlterDomainFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainBuilder.php
index 8d85d80703..d915d57e36 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainBuilder.php
@@ -4,11 +4,11 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Domain;
 
-use Flow\PostgreSql\Parser;
 use Flow\PostgreSql\Protobuf\AST\{CollateClause, ConstrType, Constraint, CreateDomainStmt, Node, PBString};
 use Flow\PostgreSql\QueryBuilder\{AstToSql, QualifiedIdentifier};
-use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
+use Flow\PostgreSql\QueryBuilder\Expression\Expression;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 
 final readonly class CreateDomainBuilder implements CreateDomainOptionsStep, CreateDomainTypeStep
 {
@@ -20,7 +20,7 @@
     private function __construct(
         private string $name,
         private ?string $schema = null,
-        private ?DataType $dataType = null,
+        private ?ColumnType $dataType = null,
         private ?string $collation = null,
         private array $constraints = [],
         private ?string $currentConstraintName = null,
@@ -34,7 +34,7 @@ public static function create(string $name) : CreateDomainTypeStep
         return new self($identifier->name(), $identifier->schema());
     }
 
-    public function as(DataType $dataType) : CreateDomainOptionsStep
+    public function as(ColumnType $dataType) : CreateDomainOptionsStep
     {
         return new self(
             $this->name,
@@ -46,11 +46,11 @@ public function as(DataType $dataType) : CreateDomainOptionsStep
         );
     }
 
-    public function check(string $expression) : CreateDomainOptionsStep
+    public function check(Condition $condition) : CreateDomainOptionsStep
     {
         $constraint = new Constraint();
         $constraint->setContype(ConstrType::CONSTR_CHECK);
-        $constraint->setRawExpr($this->parseExpression($expression));
+        $constraint->setRawExpr($condition->toAst());
 
         if ($this->currentConstraintName !== null) {
             $constraint->setConname($this->currentConstraintName);
@@ -93,11 +93,11 @@ public function constraint(string $name) : CreateDomainOptionsStep
         );
     }
 
-    public function default(string $expression) : CreateDomainOptionsStep
+    public function default(Expression $expression) : CreateDomainOptionsStep
     {
         $constraint = new Constraint();
         $constraint->setContype(ConstrType::CONSTR_DEFAULT);
-        $constraint->setRawExpr($this->parseExpression($expression));
+        $constraint->setRawExpr($expression->toAst());
 
         $newConstraints = $this->constraints;
         $newConstraints[] = $constraint;
@@ -206,44 +206,4 @@ public function toAst() : CreateDomainStmt
 
         return $stmt;
     }
-
-    private function parseExpression(string $expression) : Node
-    {
-        $parser = new Parser();
-        $parsed = $parser->parse("SELECT {$expression} AS x");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if ($stmts === null || \count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
-        }
-
-        $firstStmt = $stmts[0];
-        $selectStmt = $firstStmt->getStmt()?->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
-        }
-
-        $targetList = $selectStmt->getTargetList();
-
-        if ($targetList === null || \count($targetList) === 0) {
-            throw InvalidAstException::invalidFieldValue('targetList', 'SelectStmt', 'expected at least one target');
-        }
-
-        $firstTarget = $targetList[0];
-        $resTarget = $firstTarget->getResTarget();
-
-        if ($resTarget === null) {
-            throw InvalidAstException::unexpectedNodeType('ResTarget', 'unknown');
-        }
-
-        $val = $resTarget->getVal();
-
-        if ($val === null) {
-            throw InvalidAstException::missingRequiredField('val', 'ResTarget');
-        }
-
-        return $val;
-    }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainFinalStep.php
index 3c90306658..71f4e0ad2f 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Domain;
 
 use Flow\PostgreSql\Protobuf\AST\CreateDomainStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateDomainFinalStep extends SqlQuery
+interface CreateDomainFinalStep extends Sql
 {
     public function toAst() : CreateDomainStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainOptionsStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainOptionsStep.php
index fd52519807..1b29b7b2df 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainOptionsStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainOptionsStep.php
@@ -4,15 +4,18 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Domain;
 
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
+use Flow\PostgreSql\QueryBuilder\Expression\Expression;
+
 interface CreateDomainOptionsStep extends CreateDomainFinalStep
 {
-    public function check(string $expression) : self;
+    public function check(Condition $condition) : self;
 
     public function collate(string $collation) : self;
 
     public function constraint(string $name) : self;
 
-    public function default(string $expression) : self;
+    public function default(Expression $expression) : self;
 
     public function notNull() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainTypeStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainTypeStep.php
index 882186b309..04d22a4262 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainTypeStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/CreateDomainTypeStep.php
@@ -4,9 +4,9 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Domain;
 
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 
 interface CreateDomainTypeStep
 {
-    public function as(DataType $dataType) : CreateDomainOptionsStep;
+    public function as(ColumnType $dataType) : CreateDomainOptionsStep;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/DropDomainFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/DropDomainFinalStep.php
index 7d9bbcab0c..8f374a0c97 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/DropDomainFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Domain/DropDomainFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Domain;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropDomainFinalStep extends SqlQuery
+interface DropDomainFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DropSequence/DropSequenceFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DropSequence/DropSequenceFinalStep.php
index d6fb3b4f01..c6bf5e0b43 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DropSequence/DropSequenceFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DropSequence/DropSequenceFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\DropSequence;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropSequenceFinalStep extends SqlQuery
+interface DropSequenceFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DropTable/DropTableFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DropTable/DropTableFinalStep.php
index 6afc6f0ad0..b5eb1d965d 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DropTable/DropTableFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/DropTable/DropTableFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\DropTable;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropTableFinalStep extends SqlQuery
+interface DropTableFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/AlterExtensionFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/AlterExtensionFinalStep.php
index e47931fdbd..90e25ca873 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/AlterExtensionFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/AlterExtensionFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Extension;
 
 use Flow\PostgreSql\Protobuf\AST\{AlterExtensionContentsStmt, AlterExtensionStmt};
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterExtensionFinalStep extends SqlQuery
+interface AlterExtensionFinalStep extends Sql
 {
     public function toAst() : AlterExtensionStmt|AlterExtensionContentsStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/CreateExtensionFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/CreateExtensionFinalStep.php
index ec8b66c911..f9b7f94cae 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/CreateExtensionFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/CreateExtensionFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Extension;
 
 use Flow\PostgreSql\Protobuf\AST\CreateExtensionStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateExtensionFinalStep extends SqlQuery
+interface CreateExtensionFinalStep extends Sql
 {
     public function toAst() : CreateExtensionStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/DropExtensionFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/DropExtensionFinalStep.php
index cb123c5151..d231eb3098 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/DropExtensionFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Extension/DropExtensionFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Extension;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropExtensionFinalStep extends SqlQuery
+interface DropExtensionFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/AlterFunctionFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/AlterFunctionFinalStep.php
index 540684a0c5..d02a23eb98 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/AlterFunctionFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/AlterFunctionFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
 use Flow\PostgreSql\Protobuf\AST\{AlterFunctionStmt, RenameStmt};
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterFunctionFinalStep extends SqlQuery
+interface AlterFunctionFinalStep extends Sql
 {
     public function cost(int $cost) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/AlterProcedureFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/AlterProcedureFinalStep.php
index bb4a250c20..b09d74c119 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/AlterProcedureFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/AlterProcedureFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
 use Flow\PostgreSql\Protobuf\AST\{AlterFunctionStmt, RenameStmt};
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterProcedureFinalStep extends SqlQuery
+interface AlterProcedureFinalStep extends Sql
 {
     public function renameTo(string $newName) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CallFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CallFinalStep.php
index a139604bf2..772b0b6c5d 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CallFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CallFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
 use Flow\PostgreSql\Protobuf\AST\CallStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CallFinalStep extends SqlQuery
+interface CallFinalStep extends Sql
 {
     public function toAst() : CallStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionBuilder.php
index 89c178da3e..dcae50d78d 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionBuilder.php
@@ -5,8 +5,8 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
 use Flow\PostgreSql\Protobuf\AST\{A_Const, CreateFunctionStmt, DefElem, FunctionParameter, FunctionParameterMode, Integer, Node, PBList, PBString};
-use Flow\PostgreSql\QueryBuilder\AstToSql;
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\{AstToSql, QualifiedIdentifier};
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 
 final readonly class CreateFunctionBuilder implements CreateFunctionArgsStep, CreateFunctionFinalStep, CreateFunctionOptionsStep, CreateFunctionReturnsStep
 {
@@ -15,13 +15,14 @@
     /**
      * @param list<FunctionArgument> $arguments
      * @param list<array{name: string, arg: ?Node}> $options
-     * @param null|array<string, DataType> $tableColumns
+     * @param null|array<string, ColumnType> $tableColumns
      */
     private function __construct(
         private string $name,
+        private ?string $schema = null,
         private bool $replace = false,
         private array $arguments = [],
-        private ?DataType $returnType = null,
+        private ?ColumnType $returnType = null,
         private bool $setof = false,
         private ?array $tableColumns = null,
         private array $options = [],
@@ -30,13 +31,16 @@ private function __construct(
 
     public static function create(string $name) : CreateFunctionArgsStep
     {
-        return new self($name);
+        $identifier = QualifiedIdentifier::parse($name);
+
+        return new self($identifier->name(), $identifier->schema());
     }
 
     public function arguments(FunctionArgument ...$args) : CreateFunctionReturnsStep
     {
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             \array_values($args),
             $this->returnType,
@@ -80,6 +84,7 @@ public function orReplace() : CreateFunctionArgsStep
     {
         return new self(
             $this->name,
+            $this->schema,
             true,
             $this->arguments,
             $this->returnType,
@@ -94,10 +99,11 @@ public function parallel(ParallelSafety $safety) : CreateFunctionOptionsStep
         return $this->withStringOption('parallel', $safety->value);
     }
 
-    public function returns(DataType $type) : CreateFunctionOptionsStep
+    public function returns(ColumnType $type) : CreateFunctionOptionsStep
     {
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             $this->arguments,
             $type,
@@ -107,10 +113,11 @@ public function returns(DataType $type) : CreateFunctionOptionsStep
         );
     }
 
-    public function returnsSetOf(DataType $type) : CreateFunctionOptionsStep
+    public function returnsSetOf(ColumnType $type) : CreateFunctionOptionsStep
     {
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             $this->arguments,
             $type,
@@ -121,12 +128,13 @@ public function returnsSetOf(DataType $type) : CreateFunctionOptionsStep
     }
 
     /**
-     * @param array<string, DataType> $columns
+     * @param array<string, ColumnType> $columns
      */
     public function returnsTable(array $columns) : CreateFunctionOptionsStep
     {
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             $this->arguments,
             null,
@@ -140,9 +148,10 @@ public function returnsVoid() : CreateFunctionOptionsStep
     {
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             $this->arguments,
-            DataType::custom('void'),
+            ColumnType::custom('void'),
             false,
             null,
             $this->options,
@@ -188,6 +197,7 @@ public function set(string $parameter, string $value) : CreateFunctionOptionsSte
 
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             $this->arguments,
             $this->returnType,
@@ -214,6 +224,15 @@ public function toAst() : CreateFunctionStmt
         $stmt->setReplace($this->replace);
 
         $funcnameNodes = [];
+
+        if ($this->schema !== null) {
+            $str = new PBString();
+            $str->setSval($this->schema);
+            $node = new Node();
+            $node->setString($str);
+            $funcnameNodes[] = $node;
+        }
+
         $str = new PBString();
         $str->setSval($this->name);
         $node = new Node();
@@ -373,6 +392,7 @@ private function withOption(string $name, ?Node $arg) : self
 
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             $this->arguments,
             $this->returnType,
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionFinalStep.php
index 46fcaa83bd..d9155a8ae1 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
 use Flow\PostgreSql\Protobuf\AST\CreateFunctionStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateFunctionFinalStep extends SqlQuery
+interface CreateFunctionFinalStep extends Sql
 {
     public function toAst() : CreateFunctionStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionReturnsStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionReturnsStep.php
index 07090157b8..7e6f0a5b6d 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionReturnsStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateFunctionReturnsStep.php
@@ -4,16 +4,16 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 
 interface CreateFunctionReturnsStep
 {
-    public function returns(DataType $type) : CreateFunctionOptionsStep;
+    public function returns(ColumnType $type) : CreateFunctionOptionsStep;
 
-    public function returnsSetOf(DataType $type) : CreateFunctionOptionsStep;
+    public function returnsSetOf(ColumnType $type) : CreateFunctionOptionsStep;
 
     /**
-     * @param array<string, DataType> $columns
+     * @param array<string, ColumnType> $columns
      */
     public function returnsTable(array $columns) : CreateFunctionOptionsStep;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateProcedureBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateProcedureBuilder.php
index 512cc45643..f00477bb35 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateProcedureBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateProcedureBuilder.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Protobuf\AST\{A_Const, CreateFunctionStmt, DefElem, FunctionParameter, Node, PBList, PBString};
 use Flow\PostgreSql\Protobuf\AST\Integer;
-use Flow\PostgreSql\QueryBuilder\AstToSql;
+use Flow\PostgreSql\QueryBuilder\{AstToSql, QualifiedIdentifier};
 
 final readonly class CreateProcedureBuilder implements CreateProcedureArgsStep, CreateProcedureFinalStep, CreateProcedureOptionsStep
 {
@@ -18,6 +18,7 @@
      */
     private function __construct(
         private string $name,
+        private ?string $schema = null,
         private bool $replace = false,
         private array $arguments = [],
         private array $options = [],
@@ -26,13 +27,16 @@ private function __construct(
 
     public static function create(string $name) : CreateProcedureArgsStep
     {
-        return new self($name);
+        $identifier = QualifiedIdentifier::parse($name);
+
+        return new self($identifier->name(), $identifier->schema());
     }
 
     public function arguments(FunctionArgument ...$args) : CreateProcedureOptionsStep
     {
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             \array_values($args),
             $this->options,
@@ -53,6 +57,7 @@ public function orReplace() : CreateProcedureArgsStep
     {
         return new self(
             $this->name,
+            $this->schema,
             true,
             $this->arguments,
             $this->options,
@@ -107,6 +112,7 @@ public function set(string $parameter, string $value) : CreateProcedureOptionsSt
 
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             $this->arguments,
             $newOptions,
@@ -120,6 +126,15 @@ public function toAst() : CreateFunctionStmt
         $stmt->setReplace($this->replace);
 
         $funcnameNodes = [];
+
+        if ($this->schema !== null) {
+            $str = new PBString();
+            $str->setSval($this->schema);
+            $node = new Node();
+            $node->setString($str);
+            $funcnameNodes[] = $node;
+        }
+
         $str = new PBString();
         $str->setSval($this->name);
         $node = new Node();
@@ -216,6 +231,7 @@ private function withOption(string $name, ?Node $arg) : self
 
         return new self(
             $this->name,
+            $this->schema,
             $this->replace,
             $this->arguments,
             $newOptions,
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateProcedureFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateProcedureFinalStep.php
index e7bb0821ab..dbecc0774c 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateProcedureFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/CreateProcedureFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
 use Flow\PostgreSql\Protobuf\AST\CreateFunctionStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateProcedureFinalStep extends SqlQuery
+interface CreateProcedureFinalStep extends Sql
 {
     public function toAst() : CreateFunctionStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DoFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DoFinalStep.php
index faf1b525f3..f61f7f4fde 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DoFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DoFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
 use Flow\PostgreSql\Protobuf\AST\DoStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DoFinalStep extends SqlQuery
+interface DoFinalStep extends Sql
 {
     public function language(string $language) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DropFunctionFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DropFunctionFinalStep.php
index 1e23e9b675..1feb8620f2 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DropFunctionFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DropFunctionFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropFunctionFinalStep extends SqlQuery
+interface DropFunctionFinalStep extends Sql
 {
     public function arguments(FunctionArgument ...$args) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DropProcedureFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DropProcedureFinalStep.php
index b6d4870782..a557bda355 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DropProcedureFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/DropProcedureFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropProcedureFinalStep extends SqlQuery
+interface DropProcedureFinalStep extends Sql
 {
     public function arguments(FunctionArgument ...$args) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/FunctionArgument.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/FunctionArgument.php
index a1d1e4c6ad..418bb953a1 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/FunctionArgument.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Function/FunctionArgument.php
@@ -4,19 +4,19 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Function;
 
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 
 final readonly class FunctionArgument
 {
     private function __construct(
-        public DataType $type,
+        public ColumnType $type,
         public ?string $name = null,
         public ArgumentMode $mode = ArgumentMode::IN,
         public ?string $default = null,
     ) {
     }
 
-    public static function of(DataType $type) : self
+    public static function of(ColumnType $type) : self
     {
         return new self($type);
     }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/GrantFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/GrantFinalStep.php
index b3ad7bf5e0..f61448c999 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/GrantFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/GrantFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Grant;
 
 use Flow\PostgreSql\Protobuf\AST\GrantStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface GrantFinalStep extends SqlQuery
+interface GrantFinalStep extends Sql
 {
     public function toAst() : GrantStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/GrantRoleFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/GrantRoleFinalStep.php
index 74d0393855..3fa59e4442 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/GrantRoleFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/GrantRoleFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Grant;
 
 use Flow\PostgreSql\Protobuf\AST\GrantRoleStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface GrantRoleFinalStep extends SqlQuery
+interface GrantRoleFinalStep extends Sql
 {
     public function toAst() : GrantRoleStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/RevokeFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/RevokeFinalStep.php
index e2da84d594..d94ba79f13 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/RevokeFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/RevokeFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Grant;
 
 use Flow\PostgreSql\Protobuf\AST\GrantStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface RevokeFinalStep extends SqlQuery
+interface RevokeFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/RevokeRoleFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/RevokeRoleFinalStep.php
index 2be0aea703..07095913f0 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/RevokeRoleFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Grant/RevokeRoleFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Grant;
 
 use Flow\PostgreSql\Protobuf\AST\GrantRoleStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface RevokeRoleFinalStep extends SqlQuery
+interface RevokeRoleFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/AlterIndex/AlterTablespaceIndexFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/AlterIndex/AlterTablespaceIndexFinalStep.php
index 3dba14fe11..4122a00303 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/AlterIndex/AlterTablespaceIndexFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/AlterIndex/AlterTablespaceIndexFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Index\AlterIndex;
 
 use Flow\PostgreSql\Protobuf\AST\AlterTableStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterTablespaceIndexFinalStep extends SqlQuery
+interface AlterTablespaceIndexFinalStep extends Sql
 {
     public function toAst() : AlterTableStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/AlterIndex/RenameIndexFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/AlterIndex/RenameIndexFinalStep.php
index 0f0dec4410..e0029e6542 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/AlterIndex/RenameIndexFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/AlterIndex/RenameIndexFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Index\AlterIndex;
 
 use Flow\PostgreSql\Protobuf\AST\RenameStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface RenameIndexFinalStep extends SqlQuery
+interface RenameIndexFinalStep extends Sql
 {
     public function toAst() : RenameStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/CreateIndex/CreateIndexBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/CreateIndex/CreateIndexBuilder.php
index f1fbe28a4a..664ce42af4 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/CreateIndex/CreateIndexBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/CreateIndex/CreateIndexBuilder.php
@@ -5,7 +5,7 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Index\CreateIndex;
 
 use Flow\PostgreSql\Protobuf\AST\{IndexElem, IndexStmt, Node, RangeVar};
-use Flow\PostgreSql\QueryBuilder\AstToSql;
+use Flow\PostgreSql\QueryBuilder\{AstToSql, QualifiedIdentifier};
 use Flow\PostgreSql\QueryBuilder\Condition\Condition;
 use Flow\PostgreSql\QueryBuilder\Schema\Index\{IndexColumn, IndexMethod};
 
@@ -165,6 +165,12 @@ public function nullsNotDistinct() : CreateIndexFinalStep
 
     public function on(string $table, ?string $schema = null) : CreateIndexColumnsStep
     {
+        if ($schema === null) {
+            $identifier = QualifiedIdentifier::parse($table);
+            $table = $identifier->name();
+            $schema = $identifier->schema();
+        }
+
         return new self(
             $this->name,
             $table,
@@ -184,6 +190,12 @@ public function on(string $table, ?string $schema = null) : CreateIndexColumnsSt
 
     public function onOnly(string $table, ?string $schema = null) : CreateIndexColumnsStep
     {
+        if ($schema === null) {
+            $identifier = QualifiedIdentifier::parse($table);
+            $table = $identifier->name();
+            $schema = $identifier->schema();
+        }
+
         return new self(
             $this->name,
             $table,
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/CreateIndex/CreateIndexFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/CreateIndex/CreateIndexFinalStep.php
index 489f8b4feb..6c5b4345b2 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/CreateIndex/CreateIndexFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/CreateIndex/CreateIndexFinalStep.php
@@ -6,9 +6,9 @@
 
 use Flow\PostgreSql\Protobuf\AST\IndexStmt;
 use Flow\PostgreSql\QueryBuilder\Condition\Condition;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateIndexFinalStep extends SqlQuery
+interface CreateIndexFinalStep extends Sql
 {
     public function include(string ...$columns) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/DropIndex/DropIndexFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/DropIndex/DropIndexFinalStep.php
index a2708e45c0..0b229c43a3 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/DropIndex/DropIndexFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/DropIndex/DropIndexFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Index\DropIndex;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropIndexFinalStep extends SqlQuery
+interface DropIndexFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/Reindex/ReindexFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/Reindex/ReindexFinalStep.php
index bb757bd699..862dac0a8e 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/Reindex/ReindexFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Index/Reindex/ReindexFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Index\Reindex;
 
 use Flow\PostgreSql\Protobuf\AST\ReindexStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface ReindexFinalStep extends SqlQuery
+interface ReindexFinalStep extends Sql
 {
     public function concurrently() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Ownership/DropOwnedFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Ownership/DropOwnedFinalStep.php
index b091cd532b..140e58cd95 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Ownership/DropOwnedFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Ownership/DropOwnedFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Ownership;
 
 use Flow\PostgreSql\Protobuf\AST\DropOwnedStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropOwnedFinalStep extends SqlQuery
+interface DropOwnedFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Ownership/ReassignOwnedFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Ownership/ReassignOwnedFinalStep.php
index ffeb0fd62e..67e1b43b43 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Ownership/ReassignOwnedFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Ownership/ReassignOwnedFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Ownership;
 
 use Flow\PostgreSql\Protobuf\AST\ReassignOwnedStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface ReassignOwnedFinalStep extends SqlQuery
+interface ReassignOwnedFinalStep extends Sql
 {
     public function toAst() : ReassignOwnedStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/AlterRoleFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/AlterRoleFinalStep.php
index f0808e2565..6878eae547 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/AlterRoleFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/AlterRoleFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Role;
 
 use Flow\PostgreSql\Protobuf\AST\AlterRoleStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterRoleFinalStep extends SqlQuery
+interface AlterRoleFinalStep extends Sql
 {
     public function bypassRls() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/AlterRoleRenameFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/AlterRoleRenameFinalStep.php
index 3ab082be4d..283eba1ad9 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/AlterRoleRenameFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/AlterRoleRenameFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Role;
 
 use Flow\PostgreSql\Protobuf\AST\RenameStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterRoleRenameFinalStep extends SqlQuery
+interface AlterRoleRenameFinalStep extends Sql
 {
     public function toAst() : RenameStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/CreateRoleFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/CreateRoleFinalStep.php
index d72197864e..92223e74b1 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/CreateRoleFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/CreateRoleFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Role;
 
 use Flow\PostgreSql\Protobuf\AST\CreateRoleStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateRoleFinalStep extends SqlQuery
+interface CreateRoleFinalStep extends Sql
 {
     public function toAst() : CreateRoleStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/DropRoleFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/DropRoleFinalStep.php
index cbad212f6d..a5c9efafc1 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/DropRoleFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Role/DropRoleFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Role;
 
 use Flow\PostgreSql\Protobuf\AST\DropRoleStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropRoleFinalStep extends SqlQuery
+interface DropRoleFinalStep extends Sql
 {
     public function ifExists() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleBuilder.php
index c64c58dba8..e4e2eb9dcf 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleBuilder.php
@@ -7,6 +7,7 @@
 use Flow\PostgreSql\Parser;
 use Flow\PostgreSql\Protobuf\AST\{Node, RangeVar, RuleStmt};
 use Flow\PostgreSql\QueryBuilder\{AstToSql, QualifiedIdentifier};
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
 
 final readonly class CreateRuleBuilder implements CreateRuleDoStep, CreateRuleEventStep, CreateRuleFinalStep, CreateRuleToStep, CreateRuleWhereStep
@@ -22,7 +23,7 @@ private function __construct(
         private ?RuleEvent $event = null,
         private ?string $table = null,
         private ?string $schema = null,
-        private ?string $whereCondition = null,
+        private ?Condition $whereCondition = null,
         private bool $instead = false,
         private array $actions = [],
     ) {
@@ -189,7 +190,7 @@ public function toAst() : RuleStmt
         }
 
         if ($this->whereCondition !== null) {
-            $stmt->setWhereClause($this->parseCondition($this->whereCondition));
+            $stmt->setWhereClause($this->whereCondition->toAst());
         }
 
         $stmt->setInstead($this->instead);
@@ -201,7 +202,7 @@ public function toAst() : RuleStmt
         return $stmt;
     }
 
-    public function where(string $condition) : CreateRuleDoStep
+    public function where(Condition $condition) : CreateRuleDoStep
     {
         return new self(
             $this->name,
@@ -234,30 +235,4 @@ private function parseCommand(string $command) : Node
 
         return $stmt;
     }
-
-    private function parseCondition(string $condition) : Node
-    {
-        $parser = new Parser();
-        $parsed = $parser->parse("SELECT * FROM t WHERE {$condition}");
-
-        $stmts = $parsed->raw()->getStmts();
-
-        if ($stmts === null || \count($stmts) === 0) {
-            throw InvalidAstException::invalidFieldValue('stmts', 'ParseResult', 'expected at least one statement');
-        }
-
-        $selectStmt = $stmts[0]->getStmt()?->getSelectStmt();
-
-        if ($selectStmt === null) {
-            throw InvalidAstException::unexpectedNodeType('SelectStmt', 'unknown');
-        }
-
-        $whereClause = $selectStmt->getWhereClause();
-
-        if ($whereClause === null) {
-            throw InvalidAstException::missingRequiredField('whereClause', 'SelectStmt');
-        }
-
-        return $whereClause;
-    }
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleFinalStep.php
index ba00c30f73..8e43d5daaf 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Rule;
 
 use Flow\PostgreSql\Protobuf\AST\RuleStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateRuleFinalStep extends SqlQuery
+interface CreateRuleFinalStep extends Sql
 {
     public function toAst() : RuleStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleWhereStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleWhereStep.php
index 0a9dc67e43..d7670b09e7 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleWhereStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/CreateRuleWhereStep.php
@@ -4,7 +4,9 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Rule;
 
+use Flow\PostgreSql\QueryBuilder\Condition\Condition;
+
 interface CreateRuleWhereStep extends CreateRuleDoStep
 {
-    public function where(string $condition) : CreateRuleDoStep;
+    public function where(Condition $condition) : CreateRuleDoStep;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/DropRuleFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/DropRuleFinalStep.php
index 260dbbb59d..4517c95319 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/DropRuleFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Rule/DropRuleFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Rule;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropRuleFinalStep extends SqlQuery
+interface DropRuleFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/AlterSchemaOwnerFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/AlterSchemaOwnerFinalStep.php
index 93d62fbf1e..9c3a77eee0 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/AlterSchemaOwnerFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/AlterSchemaOwnerFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Schema;
 
 use Flow\PostgreSql\Protobuf\AST\AlterOwnerStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterSchemaOwnerFinalStep extends SqlQuery
+interface AlterSchemaOwnerFinalStep extends Sql
 {
     public function toAst() : AlterOwnerStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/AlterSchemaRenameFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/AlterSchemaRenameFinalStep.php
index 5fda1e04aa..3483eef962 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/AlterSchemaRenameFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/AlterSchemaRenameFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Schema;
 
 use Flow\PostgreSql\Protobuf\AST\RenameStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterSchemaRenameFinalStep extends SqlQuery
+interface AlterSchemaRenameFinalStep extends Sql
 {
     public function toAst() : RenameStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/CreateSchemaFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/CreateSchemaFinalStep.php
index e028ea57e3..dc40634ce6 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/CreateSchemaFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/CreateSchemaFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Schema;
 
 use Flow\PostgreSql\Protobuf\AST\CreateSchemaStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateSchemaFinalStep extends SqlQuery
+interface CreateSchemaFinalStep extends Sql
 {
     public function toAst() : CreateSchemaStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/DropSchemaFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/DropSchemaFinalStep.php
index e4187cb9c7..76c1fcf626 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/DropSchemaFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Schema/DropSchemaFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Schema;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropSchemaFinalStep extends SqlQuery
+interface DropSchemaFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Session/ResetRoleFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Session/ResetRoleFinalStep.php
index f7fd1f9759..5a42145b50 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Session/ResetRoleFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Session/ResetRoleFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Session;
 
 use Flow\PostgreSql\Protobuf\AST\VariableSetStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface ResetRoleFinalStep extends SqlQuery
+interface ResetRoleFinalStep extends Sql
 {
     public function toAst() : VariableSetStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Session/SetRoleFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Session/SetRoleFinalStep.php
index 49dae37bdf..f6edaf3b42 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Session/SetRoleFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Session/SetRoleFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Session;
 
 use Flow\PostgreSql\Protobuf\AST\VariableSetStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface SetRoleFinalStep extends SqlQuery
+interface SetRoleFinalStep extends Sql
 {
     public function toAst() : VariableSetStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/AlterTriggerFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/AlterTriggerFinalStep.php
index 7eca58996d..2f29d11b92 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/AlterTriggerFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/AlterTriggerFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Trigger;
 
 use Flow\PostgreSql\Protobuf\AST\{AlterObjectDependsStmt, RenameStmt};
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterTriggerFinalStep extends SqlQuery
+interface AlterTriggerFinalStep extends Sql
 {
     public function toAst() : RenameStmt|AlterObjectDependsStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/CreateTriggerFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/CreateTriggerFinalStep.php
index 8369c31f9d..a5207d903e 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/CreateTriggerFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/CreateTriggerFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Trigger;
 
 use Flow\PostgreSql\Protobuf\AST\CreateTrigStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateTriggerFinalStep extends SqlQuery
+interface CreateTriggerFinalStep extends Sql
 {
     public function toAst() : CreateTrigStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/DropTriggerFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/DropTriggerFinalStep.php
index 19a44c9bf7..aa085654a8 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/DropTriggerFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Trigger/DropTriggerFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Trigger;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropTriggerFinalStep extends SqlQuery
+interface DropTriggerFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Truncate/TruncateFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Truncate/TruncateFinalStep.php
index 700d7e1923..317984857b 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Truncate/TruncateFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Truncate/TruncateFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Truncate;
 
 use Flow\PostgreSql\Protobuf\AST\TruncateStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface TruncateFinalStep extends SqlQuery
+interface TruncateFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/AlterEnumTypeFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/AlterEnumTypeFinalStep.php
index ea2d0eb504..e37ea5d616 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/AlterEnumTypeFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/AlterEnumTypeFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Type;
 
 use Flow\PostgreSql\Protobuf\AST\AlterEnumStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterEnumTypeFinalStep extends SqlQuery
+interface AlterEnumTypeFinalStep extends Sql
 {
     public function ifNotExists() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateCompositeTypeFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateCompositeTypeFinalStep.php
index 769b2afeb6..769ee6e8f0 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateCompositeTypeFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateCompositeTypeFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Type;
 
 use Flow\PostgreSql\Protobuf\AST\CompositeTypeStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateCompositeTypeFinalStep extends SqlQuery
+interface CreateCompositeTypeFinalStep extends Sql
 {
     public function toAst() : CompositeTypeStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateEnumTypeFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateEnumTypeFinalStep.php
index 1052947185..856984ab86 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateEnumTypeFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateEnumTypeFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Type;
 
 use Flow\PostgreSql\Protobuf\AST\CreateEnumStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateEnumTypeFinalStep extends SqlQuery
+interface CreateEnumTypeFinalStep extends Sql
 {
     public function toAst() : CreateEnumStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateRangeTypeFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateRangeTypeFinalStep.php
index 0ed38a45a2..bf76cd2d34 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateRangeTypeFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/CreateRangeTypeFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Type;
 
 use Flow\PostgreSql\Protobuf\AST\CreateRangeStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateRangeTypeFinalStep extends SqlQuery
+interface CreateRangeTypeFinalStep extends Sql
 {
     public function toAst() : CreateRangeStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/DropTypeFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/DropTypeFinalStep.php
index e6dfebcde8..b8aba0411f 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/DropTypeFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/DropTypeFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\Type;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropTypeFinalStep extends SqlQuery
+interface DropTypeFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/TypeAttribute.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/TypeAttribute.php
index c1a6810b45..bc00a3acb0 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/TypeAttribute.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/Type/TypeAttribute.php
@@ -4,18 +4,18 @@
 
 namespace Flow\PostgreSql\QueryBuilder\Schema\Type;
 
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 
 final readonly class TypeAttribute
 {
     public function __construct(
         public string $name,
-        public DataType $type,
+        public ColumnType $type,
         public ?string $collation = null,
     ) {
     }
 
-    public static function of(string $name, DataType $type) : self
+    public static function of(string $name, ColumnType $type) : self
     {
         return new self($name, $type);
     }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewOwnerFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewOwnerFinalStep.php
index 5b62f04630..6cad03bbc2 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewOwnerFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewOwnerFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\AlterMaterializedView;
 
 use Flow\PostgreSql\Protobuf\AST\AlterTableStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterMatViewOwnerFinalStep extends SqlQuery
+interface AlterMatViewOwnerFinalStep extends Sql
 {
     public function toAst() : AlterTableStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewSchemaFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewSchemaFinalStep.php
index 8bcef1d8e2..bbb622c484 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewSchemaFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewSchemaFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\AlterMaterializedView;
 
 use Flow\PostgreSql\Protobuf\AST\AlterObjectSchemaStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterMatViewSchemaFinalStep extends SqlQuery
+interface AlterMatViewSchemaFinalStep extends Sql
 {
     public function toAst() : AlterObjectSchemaStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewTablespaceFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewTablespaceFinalStep.php
index cae4f43929..f85a42cdf6 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewTablespaceFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/AlterMatViewTablespaceFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\AlterMaterializedView;
 
 use Flow\PostgreSql\Protobuf\AST\AlterTableStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterMatViewTablespaceFinalStep extends SqlQuery
+interface AlterMatViewTablespaceFinalStep extends Sql
 {
     public function toAst() : AlterTableStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/RenameMatViewFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/RenameMatViewFinalStep.php
index 8b05282e63..a343ce72d5 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/RenameMatViewFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterMaterializedView/RenameMatViewFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\AlterMaterializedView;
 
 use Flow\PostgreSql\Protobuf\AST\RenameStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface RenameMatViewFinalStep extends SqlQuery
+interface RenameMatViewFinalStep extends Sql
 {
     public function toAst() : RenameStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/AlterViewOwnerFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/AlterViewOwnerFinalStep.php
index 81d8d72f0e..0fde569fd9 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/AlterViewOwnerFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/AlterViewOwnerFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\AlterView;
 
 use Flow\PostgreSql\Protobuf\AST\AlterTableStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterViewOwnerFinalStep extends SqlQuery
+interface AlterViewOwnerFinalStep extends Sql
 {
     public function toAst() : AlterTableStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/AlterViewSchemaFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/AlterViewSchemaFinalStep.php
index 6a6bfb5075..75baccb2d5 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/AlterViewSchemaFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/AlterViewSchemaFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\AlterView;
 
 use Flow\PostgreSql\Protobuf\AST\AlterObjectSchemaStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AlterViewSchemaFinalStep extends SqlQuery
+interface AlterViewSchemaFinalStep extends Sql
 {
     public function toAst() : AlterObjectSchemaStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/RenameViewFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/RenameViewFinalStep.php
index 595ffe99ab..cbd166f9d6 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/RenameViewFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/AlterView/RenameViewFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\AlterView;
 
 use Flow\PostgreSql\Protobuf\AST\RenameStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface RenameViewFinalStep extends SqlQuery
+interface RenameViewFinalStep extends Sql
 {
     public function toAst() : RenameStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/CreateMaterializedView/CreateMatViewFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/CreateMaterializedView/CreateMatViewFinalStep.php
index a6c9856118..4449260081 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/CreateMaterializedView/CreateMatViewFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/CreateMaterializedView/CreateMatViewFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\CreateMaterializedView;
 
 use Flow\PostgreSql\Protobuf\AST\CreateTableAsStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateMatViewFinalStep extends SqlQuery
+interface CreateMatViewFinalStep extends Sql
 {
     public function toAst() : CreateTableAsStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/CreateView/CreateViewFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/CreateView/CreateViewFinalStep.php
index 12a8b1774a..fdc05c7cc1 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/CreateView/CreateViewFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/CreateView/CreateViewFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\CreateView;
 
 use Flow\PostgreSql\Protobuf\AST\ViewStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CreateViewFinalStep extends SqlQuery
+interface CreateViewFinalStep extends Sql
 {
     public function toAst() : ViewStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/DropMaterializedView/DropMatViewFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/DropMaterializedView/DropMatViewFinalStep.php
index b4d51b750d..bc06f05d6b 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/DropMaterializedView/DropMatViewFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/DropMaterializedView/DropMatViewFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\DropMaterializedView;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropMatViewFinalStep extends SqlQuery
+interface DropMatViewFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/DropView/DropViewFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/DropView/DropViewFinalStep.php
index 4f84d6e26b..1cd834234e 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/DropView/DropViewFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/DropView/DropViewFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\DropView;
 
 use Flow\PostgreSql\Protobuf\AST\DropStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DropViewFinalStep extends SqlQuery
+interface DropViewFinalStep extends Sql
 {
     public function cascade() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/RefreshMaterializedView/RefreshMatViewFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/RefreshMaterializedView/RefreshMatViewFinalStep.php
index f30b231f44..a483ef9587 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/RefreshMaterializedView/RefreshMatViewFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Schema/View/RefreshMaterializedView/RefreshMatViewFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Schema\View\RefreshMaterializedView;
 
 use Flow\PostgreSql\Protobuf\AST\RefreshMatViewStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface RefreshMatViewFinalStep extends SqlQuery
+interface RefreshMatViewFinalStep extends Sql
 {
     public function toAst() : RefreshMatViewStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/ParsedSelect.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/ParsedSelect.php
new file mode 100644
index 0000000000..42f23b85f7
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/ParsedSelect.php
@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\QueryBuilder\Select;
+
+use Flow\PostgreSql\{ParsedQuery, Parser};
+use Flow\PostgreSql\Protobuf\AST\{Node, ParseResult, RawStmt, SelectStmt};
+
+final readonly class ParsedSelect implements SelectFinalStep
+{
+    private SelectStmt $ast;
+
+    public function __construct(string $sql)
+    {
+        $parser = new Parser();
+        $parsed = $parser->parse($sql);
+
+        $stmt = $parsed->raw()->getStmts()[0]->getStmt();
+
+        if ($stmt === null) {
+            throw new \RuntimeException(\sprintf('Failed to parse SQL: "%s".', $sql));
+        }
+
+        $selectStmt = $stmt->getSelectStmt();
+
+        if ($selectStmt === null) {
+            throw new \RuntimeException(\sprintf('Expected SELECT statement, got: "%s".', $sql));
+        }
+
+        $this->ast = $selectStmt;
+    }
+
+    public function toAst() : SelectStmt
+    {
+        return $this->ast;
+    }
+
+    public function toSql() : string
+    {
+        $node = new Node();
+        $node->setSelectStmt($this->ast);
+
+        $rawStmt = new RawStmt(['stmt' => $node]);
+        $parseResult = new ParseResult();
+        $parseResult->setStmts([$rawStmt]);
+
+        return (new ParsedQuery($parseResult))->deparse();
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectBuilder.php
index 5cf7c90f7a..dad4a1edb0 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectBuilder.php
@@ -5,11 +5,11 @@
 namespace Flow\PostgreSql\QueryBuilder\Select;
 
 use Flow\PostgreSql\Protobuf\AST\{LimitOption, Node, ResTarget, SelectStmt as ProtobufSelectStmt};
-use Flow\PostgreSql\QueryBuilder\AstToSql;
+use Flow\PostgreSql\QueryBuilder\{AstToSql, QualifiedIdentifier};
 use Flow\PostgreSql\QueryBuilder\Clause\{LockingClause, OrderBy, WindowDefinition, WithClause};
 use Flow\PostgreSql\QueryBuilder\Condition\{Condition, ConditionBuilder, ConditionFactory};
 use Flow\PostgreSql\QueryBuilder\Exception\{InvalidAstException, InvalidBuilderStateException};
-use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Expression, ExpressionFactory, Literal};
+use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, Column, Expression, ExpressionFactory, Literal};
 use Flow\PostgreSql\QueryBuilder\Table\{AliasedTable, DerivedTable, JoinType, JoinedTable, Table, TableFunction, TableReference};
 
 final readonly class SelectBuilder implements SelectFromStep, SelectJoinStep, SelectSelectStep
@@ -221,8 +221,13 @@ public static function with(WithClause $with) : SelectSelectStep
         return new self(with: $with);
     }
 
-    public function crossJoin(TableReference $table) : SelectJoinStep
+    public function crossJoin(string|TableReference $table) : SelectJoinStep
     {
+        if (\is_string($table)) {
+            $id = QualifiedIdentifier::parse($table);
+            $table = new Table($id->name(), $id->schema());
+        }
+
         $join = new JoinedTable(
             left: $this->from[\count($this->from) - 1],
             right: $table,
@@ -381,8 +386,20 @@ public function forUpdate(string ...$tables) : SelectFinalStep
         );
     }
 
-    public function from(TableReference ...$tables) : SelectJoinStep
+    public function from(string|TableReference ...$tables) : SelectJoinStep
     {
+        $tables = \array_map(
+            static function (string|TableReference $t) : TableReference {
+                if ($t instanceof TableReference) {
+                    return $t;
+                }
+                $id = QualifiedIdentifier::parse($t);
+
+                return new Table($id->name(), $id->schema());
+            },
+            $tables,
+        );
+
         return new self(
             with: $this->with,
             selectList: $this->selectList,
@@ -402,8 +419,13 @@ public function from(TableReference ...$tables) : SelectJoinStep
         );
     }
 
-    public function fullJoin(TableReference $table, Condition $on) : SelectJoinStep
+    public function fullJoin(string|TableReference $table, Condition $on) : SelectJoinStep
     {
+        if (\is_string($table)) {
+            $id = QualifiedIdentifier::parse($table);
+            $table = new Table($id->name(), $id->schema());
+        }
+
         $join = new JoinedTable(
             left: $this->from[\count($this->from) - 1],
             right: $table,
@@ -431,8 +453,13 @@ public function fullJoin(TableReference $table, Condition $on) : SelectJoinStep
         );
     }
 
-    public function groupBy(Expression ...$expressions) : SelectHavingStep
+    public function groupBy(string|Expression ...$expressions) : SelectHavingStep
     {
+        $expressions = \array_map(
+            static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : Column::fromParts(QualifiedIdentifier::parse($e)->parts()),
+            $expressions,
+        );
+
         return new self(
             with: $this->with,
             selectList: $this->selectList,
@@ -511,8 +538,13 @@ public function intersectAll(SelectFinalStep $other) : SelectOrderByStep
         );
     }
 
-    public function join(TableReference $table, Condition $on) : SelectJoinStep
+    public function join(string|TableReference $table, Condition $on) : SelectJoinStep
     {
+        if (\is_string($table)) {
+            $id = QualifiedIdentifier::parse($table);
+            $table = new Table($id->name(), $id->schema());
+        }
+
         $join = new JoinedTable(
             left: $this->from[\count($this->from) - 1],
             right: $table,
@@ -540,8 +572,13 @@ public function join(TableReference $table, Condition $on) : SelectJoinStep
         );
     }
 
-    public function leftJoin(TableReference $table, Condition $on) : SelectJoinStep
+    public function leftJoin(string|TableReference $table, Condition $on) : SelectJoinStep
     {
+        if (\is_string($table)) {
+            $id = QualifiedIdentifier::parse($table);
+            $table = new Table($id->name(), $id->schema());
+        }
+
         $join = new JoinedTable(
             left: $this->from[\count($this->from) - 1],
             right: $table,
@@ -635,8 +672,13 @@ public function orderBy(OrderBy ...$items) : SelectLimitStep
         );
     }
 
-    public function rightJoin(TableReference $table, Condition $on) : SelectJoinStep
+    public function rightJoin(string|TableReference $table, Condition $on) : SelectJoinStep
     {
+        if (\is_string($table)) {
+            $id = QualifiedIdentifier::parse($table);
+            $table = new Table($id->name(), $id->schema());
+        }
+
         $join = new JoinedTable(
             left: $this->from[\count($this->from) - 1],
             right: $table,
@@ -664,8 +706,13 @@ public function rightJoin(TableReference $table, Condition $on) : SelectJoinStep
         );
     }
 
-    public function select(Expression ...$expressions) : self
+    public function select(string|Expression ...$expressions) : self
     {
+        $expressions = \array_map(
+            static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : Column::fromParts(QualifiedIdentifier::parse($e)->parts()),
+            $expressions,
+        );
+
         return new self(
             with: $this->with,
             selectList: $expressions,
@@ -685,8 +732,13 @@ public function select(Expression ...$expressions) : self
         );
     }
 
-    public function selectDistinct(Expression ...$expressions) : SelectFromStep
+    public function selectDistinct(string|Expression ...$expressions) : SelectFromStep
     {
+        $expressions = \array_map(
+            static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : Column::fromParts(QualifiedIdentifier::parse($e)->parts()),
+            $expressions,
+        );
+
         return new self(
             with: $this->with,
             selectList: $expressions,
@@ -706,13 +758,15 @@ public function selectDistinct(Expression ...$expressions) : SelectFromStep
         );
     }
 
-    public function selectDistinctOn(array $distinctExpressions, Expression ...$selectExpressions) : SelectFromStep
+    public function selectDistinctOn(array $distinctExpressions, string|Expression ...$selectExpressions) : SelectFromStep
     {
+        $coerce = static fn (string|Expression $e) : Expression => $e instanceof Expression ? $e : Column::fromParts(QualifiedIdentifier::parse($e)->parts());
+
         return new self(
             with: $this->with,
-            selectList: $selectExpressions,
+            selectList: \array_map($coerce, $selectExpressions),
             distinct: true,
-            distinctOn: $distinctExpressions,
+            distinctOn: \array_map($coerce, $distinctExpressions),
             from: $this->from,
             joins: $this->joins,
             where: $this->where,
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectFinalStep.php
index cbdb84b7c3..76bab6c5c1 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectFinalStep.php
@@ -5,13 +5,13 @@
 namespace Flow\PostgreSql\QueryBuilder\Select;
 
 use Flow\PostgreSql\Protobuf\AST\SelectStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 /**
  * Terminal interface for SELECT query builder.
  * Represents a complete SELECT statement that can be converted to AST.
  */
-interface SelectFinalStep extends SqlQuery
+interface SelectFinalStep extends Sql
 {
     /**
      * Convert this SELECT query to a protobuf AST SelectStmt.
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectFromStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectFromStep.php
index 732de358ec..b727152d2b 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectFromStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectFromStep.php
@@ -8,5 +8,5 @@
 
 interface SelectFromStep extends SelectFinalStep
 {
-    public function from(TableReference ...$tables) : SelectJoinStep;
+    public function from(string|TableReference ...$tables) : SelectJoinStep;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectGroupByStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectGroupByStep.php
index d9731fbb31..43f4a6ff39 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectGroupByStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectGroupByStep.php
@@ -8,5 +8,5 @@
 
 interface SelectGroupByStep extends SelectHavingStep
 {
-    public function groupBy(Expression ...$expressions) : SelectHavingStep;
+    public function groupBy(string|Expression ...$expressions) : SelectHavingStep;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectJoinStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectJoinStep.php
index f5ce52e6e6..04eaed5fff 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectJoinStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectJoinStep.php
@@ -9,13 +9,13 @@
 
 interface SelectJoinStep extends SelectWhereStep
 {
-    public function crossJoin(TableReference $table) : self;
+    public function crossJoin(string|TableReference $table) : self;
 
-    public function fullJoin(TableReference $table, Condition $on) : self;
+    public function fullJoin(string|TableReference $table, Condition $on) : self;
 
-    public function join(TableReference $table, Condition $on) : self;
+    public function join(string|TableReference $table, Condition $on) : self;
 
-    public function leftJoin(TableReference $table, Condition $on) : self;
+    public function leftJoin(string|TableReference $table, Condition $on) : self;
 
-    public function rightJoin(TableReference $table, Condition $on) : self;
+    public function rightJoin(string|TableReference $table, Condition $on) : self;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectSelectStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectSelectStep.php
index 17453fecaa..11b0b77c2e 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectSelectStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Select/SelectSelectStep.php
@@ -9,18 +9,18 @@
 interface SelectSelectStep
 {
     /**
-     * @param Expression ...$expressions
+     * @param Expression|string ...$expressions
      */
-    public function select(Expression ...$expressions) : SelectFromStep;
+    public function select(string|Expression ...$expressions) : SelectFromStep;
 
     /**
-     * @param Expression ...$expressions
+     * @param Expression|string ...$expressions
      */
-    public function selectDistinct(Expression ...$expressions) : SelectFromStep;
+    public function selectDistinct(string|Expression ...$expressions) : SelectFromStep;
 
     /**
-     * @param array<Expression> $distinctExpressions
-     * @param Expression ...$selectExpressions
+     * @param array<Expression|string> $distinctExpressions
+     * @param Expression|string ...$selectExpressions
      */
-    public function selectDistinctOn(array $distinctExpressions, Expression ...$selectExpressions) : SelectFromStep;
+    public function selectDistinctOn(array $distinctExpressions, string|Expression ...$selectExpressions) : SelectFromStep;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/SqlQuery.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Sql.php
similarity index 95%
rename from src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/SqlQuery.php
rename to src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Sql.php
index b037411e5f..efcc1fc238 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/SqlQuery.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Sql.php
@@ -10,7 +10,7 @@
  * Implemented by all query builder final step interfaces.
  * Allows the Client to accept both raw SQL strings and query builder objects.
  */
-interface SqlQuery
+interface Sql
 {
     /**
      * Convert this query to a SQL string.
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/BeginFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/BeginFinalStep.php
index 6477208cd6..161435918b 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/BeginFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/BeginFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Transaction;
 
 use Flow\PostgreSql\Protobuf\AST\TransactionStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface BeginFinalStep extends SqlQuery
+interface BeginFinalStep extends Sql
 {
     public function toAst() : TransactionStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/CommitFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/CommitFinalStep.php
index 5a8909c16e..7b3222626f 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/CommitFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/CommitFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Transaction;
 
 use Flow\PostgreSql\Protobuf\AST\TransactionStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CommitFinalStep extends SqlQuery
+interface CommitFinalStep extends Sql
 {
     public function toAst() : TransactionStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/PreparedTransactionFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/PreparedTransactionFinalStep.php
index 4dbe7096e6..2b98aa97cd 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/PreparedTransactionFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/PreparedTransactionFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Transaction;
 
 use Flow\PostgreSql\Protobuf\AST\TransactionStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface PreparedTransactionFinalStep extends SqlQuery
+interface PreparedTransactionFinalStep extends Sql
 {
     public function toAst() : TransactionStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/RollbackFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/RollbackFinalStep.php
index a8354d8933..cf68a0a1ed 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/RollbackFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/RollbackFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Transaction;
 
 use Flow\PostgreSql\Protobuf\AST\TransactionStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface RollbackFinalStep extends SqlQuery
+interface RollbackFinalStep extends Sql
 {
     public function toAst() : TransactionStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/SavepointFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/SavepointFinalStep.php
index f2d9cbbccd..5defe1b3c4 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/SavepointFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/SavepointFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Transaction;
 
 use Flow\PostgreSql\Protobuf\AST\TransactionStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface SavepointFinalStep extends SqlQuery
+interface SavepointFinalStep extends Sql
 {
     public function toAst() : TransactionStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/SetTransactionFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/SetTransactionFinalStep.php
index 5bd4c666d8..e52ea29828 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/SetTransactionFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Transaction/SetTransactionFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Transaction;
 
 use Flow\PostgreSql\Protobuf\AST\VariableSetStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface SetTransactionFinalStep extends SqlQuery
+interface SetTransactionFinalStep extends Sql
 {
     public function toAst() : VariableSetStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateBuilder.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateBuilder.php
index a5c3a2fb9d..e9642f4c69 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateBuilder.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateBuilder.php
@@ -142,8 +142,20 @@ public static function with(WithClause $with) : UpdateTableStep
         return new self(with: $with);
     }
 
-    public function from(TableReference ...$tables) : UpdateWhereStep
+    public function from(string|TableReference ...$tables) : UpdateWhereStep
     {
+        $tables = \array_map(
+            static function (string|TableReference $t) : TableReference {
+                if ($t instanceof TableReference) {
+                    return $t;
+                }
+                $id = QualifiedIdentifier::parse($t);
+
+                return new Table($id->name(), $id->schema());
+            },
+            $tables,
+        );
+
         return new self(
             with: $this->with,
             table: $this->table,
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateFinalStep.php
index 2ed29fa0f0..6001736d9c 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateFinalStep.php
@@ -5,12 +5,12 @@
 namespace Flow\PostgreSql\QueryBuilder\Update;
 
 use Flow\PostgreSql\Protobuf\AST\UpdateStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
 /**
  * Terminal interface for UPDATE query builder.
  */
-interface UpdateFinalStep extends SqlQuery
+interface UpdateFinalStep extends Sql
 {
     /**
      * Convert this UPDATE query to protobuf AST.
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateFromStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateFromStep.php
index 4f0633a42a..0c60837b3f 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateFromStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Update/UpdateFromStep.php
@@ -16,5 +16,5 @@ interface UpdateFromStep extends UpdateWhereStep
      *
      * @param TableReference ...$tables Tables to reference in FROM clause
      */
-    public function from(TableReference ...$tables) : UpdateWhereStep;
+    public function from(string|TableReference ...$tables) : UpdateWhereStep;
 }
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/AnalyzeFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/AnalyzeFinalStep.php
index 8603fa4b98..e844e4f7d9 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/AnalyzeFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/AnalyzeFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Utility;
 
 use Flow\PostgreSql\Protobuf\AST\VacuumStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface AnalyzeFinalStep extends SqlQuery
+interface AnalyzeFinalStep extends Sql
 {
     public function skipLocked() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/ClusterFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/ClusterFinalStep.php
index 95638c3020..8ed2a4a4c7 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/ClusterFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/ClusterFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Utility;
 
 use Flow\PostgreSql\Protobuf\AST\ClusterStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface ClusterFinalStep extends SqlQuery
+interface ClusterFinalStep extends Sql
 {
     public function table(string $table) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/CommentFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/CommentFinalStep.php
index 3dd38bc808..3dcbc754be 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/CommentFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/CommentFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Utility;
 
 use Flow\PostgreSql\Protobuf\AST\CommentStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface CommentFinalStep extends SqlQuery
+interface CommentFinalStep extends Sql
 {
     public function is(string $comment) : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/DiscardFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/DiscardFinalStep.php
index 7b72557171..a69061ae90 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/DiscardFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/DiscardFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Utility;
 
 use Flow\PostgreSql\Protobuf\AST\DiscardStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface DiscardFinalStep extends SqlQuery
+interface DiscardFinalStep extends Sql
 {
     public function toAst() : DiscardStmt;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/ExplainFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/ExplainFinalStep.php
index aa8fdb0c93..96f45deede 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/ExplainFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/ExplainFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Utility;
 
 use Flow\PostgreSql\Protobuf\AST\ExplainStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface ExplainFinalStep extends SqlQuery
+interface ExplainFinalStep extends Sql
 {
     public function analyze() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/LockFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/LockFinalStep.php
index a9564f8358..24cbbf20f3 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/LockFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/LockFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Utility;
 
 use Flow\PostgreSql\Protobuf\AST\LockStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface LockFinalStep extends SqlQuery
+interface LockFinalStep extends Sql
 {
     public function accessExclusive() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/VacuumFinalStep.php b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/VacuumFinalStep.php
index 7ba072a90c..35471f6b57 100644
--- a/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/VacuumFinalStep.php
+++ b/src/lib/postgresql/src/Flow/PostgreSql/QueryBuilder/Utility/VacuumFinalStep.php
@@ -5,9 +5,9 @@
 namespace Flow\PostgreSql\QueryBuilder\Utility;
 
 use Flow\PostgreSql\Protobuf\AST\VacuumStmt;
-use Flow\PostgreSql\QueryBuilder\SqlQuery;
+use Flow\PostgreSql\QueryBuilder\Sql;
 
-interface VacuumFinalStep extends SqlQuery
+interface VacuumFinalStep extends Sql
 {
     public function analyze() : self;
 
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Catalog.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Catalog.php
new file mode 100644
index 0000000000..1dfa89ea9f
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Catalog.php
@@ -0,0 +1,107 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use Flow\PostgreSql\Schema\Exception\SchemaException;
+
+/**
+ * @phpstan-import-type SchemaShape from Schema
+ *
+ * @phpstan-type CatalogShape = array{schemas: list<SchemaShape>}
+ */
+final readonly class Catalog
+{
+    /**
+     * @param list<Schema> $schemas
+     */
+    public function __construct(
+        private array $schemas,
+    ) {
+    }
+
+    /**
+     * @param CatalogShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            schemas: \array_map(
+                static fn (array $s) : Schema => Schema::fromArray($s),
+                $data['schemas'],
+            ),
+        );
+    }
+
+    /**
+     * @return list<Schema>
+     */
+    public function all() : array
+    {
+        return $this->schemas;
+    }
+
+    public function get(string $name) : Schema
+    {
+        foreach ($this->schemas as $schema) {
+            if ($schema->name === $name) {
+                return $schema;
+            }
+        }
+
+        throw new SchemaException(\sprintf('Schema "%s" not found in catalog.', $name));
+    }
+
+    public function has(string $name) : bool
+    {
+        foreach ($this->schemas as $schema) {
+            if ($schema->name === $name) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function merge(self $other) : self
+    {
+        $schemas = [];
+
+        foreach ($this->schemas as $schema) {
+            $schemas[$schema->name] = $schema;
+        }
+
+        foreach ($other->schemas as $schema) {
+            $schemas[$schema->name] = \array_key_exists($schema->name, $schemas)
+                ? $schemas[$schema->name]->merge($schema)
+                : $schema;
+        }
+
+        return new self(\array_values($schemas));
+    }
+
+    /**
+     * @return list<string>
+     */
+    public function names() : array
+    {
+        return \array_map(
+            static fn (Schema $s) : string => $s->name,
+            $this->schemas,
+        );
+    }
+
+    /**
+     * @return CatalogShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'schemas' => \array_map(
+                static fn (Schema $s) : array => $s->normalize(),
+                $this->schemas,
+            ),
+        ];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/CatalogProvider.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/CatalogProvider.php
new file mode 100644
index 0000000000..dbaf1c8a1b
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/CatalogProvider.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+interface CatalogProvider
+{
+    public function get() : Catalog;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/ChainCatalogProvider.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ChainCatalogProvider.php
new file mode 100644
index 0000000000..ef8e2b0a15
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ChainCatalogProvider.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+final readonly class ChainCatalogProvider implements CatalogProvider
+{
+    /**
+     * @var list<CatalogProvider>
+     */
+    private array $providers;
+
+    public function __construct(CatalogProvider ...$providers)
+    {
+        $this->providers = \array_values($providers);
+    }
+
+    public function get() : Catalog
+    {
+        $catalog = new Catalog([]);
+
+        foreach ($this->providers as $provider) {
+            $catalog = $catalog->merge($provider->get());
+        }
+
+        return $catalog;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Column.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Column.php
new file mode 100644
index 0000000000..6b9b8abb91
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Column.php
@@ -0,0 +1,80 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+
+/**
+ * @phpstan-import-type ColumnTypeShape from ColumnType
+ *
+ * @phpstan-type ColumnShape = array{name: string, type: ColumnTypeShape, nullable: bool, default: ?string, is_identity: bool, identity_generation: ?string, is_generated: bool, generation_expression: ?string, ordinal_position: ?int}
+ */
+final readonly class Column
+{
+    public function __construct(
+        public string $name,
+        public ColumnType $type,
+        public bool $nullable,
+        public ?string $default = null,
+        public bool $isIdentity = false,
+        public ?IdentityGeneration $identityGeneration = null,
+        public bool $isGenerated = false,
+        public ?string $generationExpression = null,
+        public ?int $ordinalPosition = null,
+    ) {
+    }
+
+    /**
+     * @param ColumnShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            type: ColumnType::fromArray($data['type']),
+            nullable: $data['nullable'],
+            default: $data['default'] ?? null,
+            isIdentity: $data['is_identity'] ?? false,
+            identityGeneration: array_key_exists('identity_generation', $data) && $data['identity_generation'] !== null ? IdentityGeneration::from($data['identity_generation']) : null,
+            isGenerated: $data['is_generated'] ?? false,
+            generationExpression: $data['generation_expression'] ?? null,
+            ordinalPosition: $data['ordinal_position'] ?? null,
+        );
+    }
+
+    public function isEqual(self $other) : bool
+    {
+        return $this->name === $other->name && $this->isEqualStructure($other);
+    }
+
+    public function isEqualStructure(self $other) : bool
+    {
+        return $this->type->isEqual($other->type)
+            && $this->nullable === $other->nullable
+            && $this->default === $other->default
+            && $this->isIdentity === $other->isIdentity
+            && $this->identityGeneration === $other->identityGeneration
+            && $this->isGenerated === $other->isGenerated
+            && $this->generationExpression === $other->generationExpression;
+    }
+
+    /**
+     * @return ColumnShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'type' => $this->type->normalize(),
+            'nullable' => $this->nullable,
+            'default' => $this->default,
+            'is_identity' => $this->isIdentity,
+            'identity_generation' => $this->identityGeneration?->value,
+            'is_generated' => $this->isGenerated,
+            'generation_expression' => $this->generationExpression,
+            'ordinal_position' => $this->ordinalPosition,
+        ];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/CheckConstraint.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/CheckConstraint.php
new file mode 100644
index 0000000000..4a20112948
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/CheckConstraint.php
@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Constraint;
+
+/**
+ * @phpstan-type CheckConstraintShape = array{expression: string, name: ?string, no_inherit: bool}
+ */
+final readonly class CheckConstraint
+{
+    public function __construct(
+        public string $expression,
+        public ?string $name = null,
+        public bool $noInherit = false,
+    ) {
+    }
+
+    /**
+     * @param CheckConstraintShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            expression: $data['expression'],
+            name: $data['name'] ?? null,
+            noInherit: $data['no_inherit'] ?? false,
+        );
+    }
+
+    public function isEqual(self $other) : bool
+    {
+        return $this->name === $other->name && $this->isEqualStructure($other);
+    }
+
+    public function isEqualStructure(self $other) : bool
+    {
+        return $this->expression === $other->expression
+            && $this->noInherit === $other->noInherit;
+    }
+
+    /**
+     * @return CheckConstraintShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'expression' => $this->expression,
+            'name' => $this->name,
+            'no_inherit' => $this->noInherit,
+        ];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/ExcludeConstraint.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/ExcludeConstraint.php
new file mode 100644
index 0000000000..4a1c668339
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/ExcludeConstraint.php
@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Constraint;
+
+/**
+ * @phpstan-type ExcludeConstraintShape = array{definition: string, name: ?string}
+ */
+final readonly class ExcludeConstraint
+{
+    public function __construct(
+        public string $definition,
+        public ?string $name = null,
+    ) {
+    }
+
+    /**
+     * @param ExcludeConstraintShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            definition: $data['definition'],
+            name: $data['name'] ?? null,
+        );
+    }
+
+    public function isEqual(self $other) : bool
+    {
+        return $this->name === $other->name && $this->isEqualStructure($other);
+    }
+
+    public function isEqualStructure(self $other) : bool
+    {
+        return $this->definition === $other->definition;
+    }
+
+    /**
+     * @return ExcludeConstraintShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'definition' => $this->definition,
+            'name' => $this->name,
+        ];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/ForeignKey.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/ForeignKey.php
new file mode 100644
index 0000000000..0db4065c5d
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/ForeignKey.php
@@ -0,0 +1,83 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Constraint;
+
+use Flow\PostgreSql\QueryBuilder\Schema\ReferentialAction;
+
+/**
+ * @phpstan-type ForeignKeyShape = array{name: ?string, columns: non-empty-list<string>, reference_schema: string, reference_table: string, reference_columns: non-empty-list<string>, on_update: string, on_delete: string, deferrable: bool, initially_deferred: bool}
+ */
+final readonly class ForeignKey
+{
+    /**
+     * @param non-empty-list<string> $columns
+     * @param non-empty-list<string> $referenceColumns
+     */
+    public function __construct(
+        public ?string $name,
+        public array $columns,
+        public string $referenceSchema,
+        public string $referenceTable,
+        public array $referenceColumns,
+        public ReferentialAction $onUpdate = ReferentialAction::NO_ACTION,
+        public ReferentialAction $onDelete = ReferentialAction::NO_ACTION,
+        public bool $deferrable = false,
+        public bool $initiallyDeferred = false,
+    ) {
+    }
+
+    /**
+     * @param ForeignKeyShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            columns: $data['columns'],
+            referenceSchema: $data['reference_schema'],
+            referenceTable: $data['reference_table'],
+            referenceColumns: $data['reference_columns'],
+            onUpdate: array_key_exists('on_update', $data) ? ReferentialAction::from($data['on_update']) : ReferentialAction::NO_ACTION,
+            onDelete: array_key_exists('on_delete', $data) ? ReferentialAction::from($data['on_delete']) : ReferentialAction::NO_ACTION,
+            deferrable: $data['deferrable'] ?? false,
+            initiallyDeferred: $data['initially_deferred'] ?? false,
+        );
+    }
+
+    public function isEqual(self $other) : bool
+    {
+        return $this->name === $other->name && $this->isEqualStructure($other);
+    }
+
+    public function isEqualStructure(self $other) : bool
+    {
+        return $this->columns === $other->columns
+            && $this->referenceSchema === $other->referenceSchema
+            && $this->referenceTable === $other->referenceTable
+            && $this->referenceColumns === $other->referenceColumns
+            && $this->onUpdate === $other->onUpdate
+            && $this->onDelete === $other->onDelete
+            && $this->deferrable === $other->deferrable
+            && $this->initiallyDeferred === $other->initiallyDeferred;
+    }
+
+    /**
+     * @return ForeignKeyShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'columns' => $this->columns,
+            'reference_schema' => $this->referenceSchema,
+            'reference_table' => $this->referenceTable,
+            'reference_columns' => $this->referenceColumns,
+            'on_update' => $this->onUpdate->value,
+            'on_delete' => $this->onDelete->value,
+            'deferrable' => $this->deferrable,
+            'initially_deferred' => $this->initiallyDeferred,
+        ];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/PrimaryKey.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/PrimaryKey.php
new file mode 100644
index 0000000000..edfc988864
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/PrimaryKey.php
@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Constraint;
+
+/**
+ * @phpstan-type PrimaryKeyShape = array{columns: non-empty-list<string>, name: ?string}
+ */
+final readonly class PrimaryKey
+{
+    /**
+     * @param non-empty-list<string> $columns
+     */
+    public function __construct(
+        public array $columns,
+        public ?string $name = null,
+    ) {
+    }
+
+    /**
+     * @param PrimaryKeyShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            columns: $data['columns'],
+            name: $data['name'] ?? null,
+        );
+    }
+
+    public function isEqual(self $other) : bool
+    {
+        return $this->name === $other->name && $this->isEqualStructure($other);
+    }
+
+    public function isEqualStructure(self $other) : bool
+    {
+        $aCols = $this->columns;
+        $bCols = $other->columns;
+        \sort($aCols);
+        \sort($bCols);
+
+        return $aCols === $bCols;
+    }
+
+    /**
+     * @return PrimaryKeyShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'columns' => $this->columns,
+            'name' => $this->name,
+        ];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/UniqueConstraint.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/UniqueConstraint.php
new file mode 100644
index 0000000000..3fecd91714
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Constraint/UniqueConstraint.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Constraint;
+
+/**
+ * @phpstan-type UniqueConstraintShape = array{columns: non-empty-list<string>, name: ?string, nulls_not_distinct: bool}
+ */
+final readonly class UniqueConstraint
+{
+    /**
+     * @param non-empty-list<string> $columns
+     */
+    public function __construct(
+        public array $columns,
+        public ?string $name = null,
+        public bool $nullsNotDistinct = false,
+    ) {
+    }
+
+    /**
+     * @param UniqueConstraintShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            columns: $data['columns'],
+            name: $data['name'] ?? null,
+            nullsNotDistinct: $data['nulls_not_distinct'] ?? false,
+        );
+    }
+
+    public function isEqual(self $other) : bool
+    {
+        return $this->name === $other->name && $this->isEqualStructure($other);
+    }
+
+    public function isEqualStructure(self $other) : bool
+    {
+        $aCols = $this->columns;
+        $bCols = $other->columns;
+        \sort($aCols);
+        \sort($bCols);
+
+        return $aCols === $bCols && $this->nullsNotDistinct === $other->nullsNotDistinct;
+    }
+
+    /**
+     * @return UniqueConstraintShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'columns' => $this->columns,
+            'name' => $this->name,
+            'nulls_not_distinct' => $this->nullsNotDistinct,
+        ];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/AstViewDependencyResolver.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/AstViewDependencyResolver.php
new file mode 100644
index 0000000000..585494669e
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/AstViewDependencyResolver.php
@@ -0,0 +1,144 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Extractors\Tables;
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Schema\Catalog;
+
+final readonly class AstViewDependencyResolver implements ViewDependencyResolver
+{
+    public function __construct(private Parser $parser)
+    {
+    }
+
+    public function resolve(Catalog $catalog, array $modifiedTableQualifiedNames) : DependentViews
+    {
+        if ($modifiedTableQualifiedNames === []) {
+            return DependentViews::empty();
+        }
+
+        /** @var array<string, DependentView> $allViews */
+        $allViews = [];
+        /** @var array<string, list<string>> $viewDependsOn */
+        $viewDependsOn = [];
+
+        foreach ($catalog->all() as $schema) {
+            foreach ($schema->views as $view) {
+                $qualifiedName = $schema->name . '.' . $view->name;
+                $allViews[$qualifiedName] = new DependentView($schema->name, $view);
+                $viewDependsOn[$qualifiedName] = $this->extractDependencies($view->definition, $schema->name);
+            }
+
+            foreach ($schema->materializedViews as $materializedView) {
+                $qualifiedName = $schema->name . '.' . $materializedView->name;
+                $allViews[$qualifiedName] = new DependentView($schema->name, $materializedView);
+                $viewDependsOn[$qualifiedName] = $this->extractDependencies($materializedView->definition, $schema->name);
+            }
+        }
+
+        $affected = $this->findAffectedViews($modifiedTableQualifiedNames, $viewDependsOn);
+
+        if ($affected === []) {
+            return DependentViews::empty();
+        }
+
+        $depths = $this->computeDepths($affected, $viewDependsOn, $allViews);
+
+        $dropOrder = $affected;
+        \usort($dropOrder, static fn (string $a, string $b) : int => $depths[$b] <=> $depths[$a]);
+
+        $createOrder = $affected;
+        \usort($createOrder, static fn (string $a, string $b) : int => $depths[$a] <=> $depths[$b]);
+
+        return new DependentViews(
+            \array_map(static fn (string $name) : DependentView => $allViews[$name], $dropOrder),
+            \array_map(static fn (string $name) : DependentView => $allViews[$name], $createOrder),
+        );
+    }
+
+    /**
+     * @param list<string> $affected
+     * @param array<string, list<string>> $viewDependsOn
+     * @param array<string, DependentView> $allViews
+     *
+     * @return array<string, int>
+     */
+    private function computeDepths(array $affected, array $viewDependsOn, array $allViews) : array
+    {
+        $depths = [];
+        $affectedSet = \array_flip($affected);
+
+        $getDepth = static function (string $viewName) use (&$getDepth, &$depths, $viewDependsOn, $allViews, $affectedSet) : int {
+            if (\array_key_exists($viewName, $depths)) {
+                return $depths[$viewName];
+            }
+
+            $depths[$viewName] = 0;
+            $maxDep = -1;
+
+            foreach ($viewDependsOn[$viewName] ?? [] as $dep) {
+                if (\array_key_exists($dep, $allViews) && \array_key_exists($dep, $affectedSet)) {
+                    $maxDep = \max($maxDep, $getDepth($dep));
+                }
+            }
+
+            $depths[$viewName] = $maxDep + 1;
+
+            return $depths[$viewName];
+        };
+
+        foreach ($affected as $viewName) {
+            $getDepth($viewName);
+        }
+
+        return $depths;
+    }
+
+    /**
+     * @return list<string>
+     */
+    private function extractDependencies(string $definition, string $defaultSchema) : array
+    {
+        $parsedQuery = $this->parser->parse($definition);
+        $tables = (new Tables($parsedQuery))->all();
+        $deps = [];
+
+        foreach ($tables as $table) {
+            $deps[] = ($table->schema() ?? $defaultSchema) . '.' . $table->name();
+        }
+
+        return $deps;
+    }
+
+    /**
+     * @param list<string> $modifiedTableQualifiedNames
+     * @param array<string, list<string>> $viewDependsOn
+     *
+     * @return list<string>
+     */
+    private function findAffectedViews(array $modifiedTableQualifiedNames, array $viewDependsOn) : array
+    {
+        $affected = [];
+        $queue = $modifiedTableQualifiedNames;
+
+        while ($queue !== []) {
+            $current = \array_shift($queue);
+
+            foreach ($viewDependsOn as $viewName => $deps) {
+                if (\in_array($viewName, $affected, true)) {
+                    continue;
+                }
+
+                if (\in_array($current, $deps, true)) {
+                    $affected[] = $viewName;
+                    $queue[] = $viewName;
+                }
+            }
+        }
+
+        return $affected;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/CatalogComparator.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/CatalogComparator.php
new file mode 100644
index 0000000000..60b0b34f85
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/CatalogComparator.php
@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Schema\{Catalog, ExecutionOrderStrategy, ForeignKeyDependencyOrder, MaterializedView, MaterializedViewDependencyOrder, View, ViewDependencyOrder};
+use Flow\PostgreSql\Schema\Table;
+
+final readonly class CatalogComparator
+{
+    /**
+     * @param ExecutionOrderStrategy<Table> $tableOrderStrategy
+     * @param ExecutionOrderStrategy<View> $viewOrderStrategy
+     * @param ExecutionOrderStrategy<MaterializedView> $materializedViewOrderStrategy
+     */
+    public function __construct(
+        private SchemaComparator $schemaComparator,
+        private ViewDependencyResolver $viewDependencyResolver = new AstViewDependencyResolver(new Parser()),
+        private ExecutionOrderStrategy $tableOrderStrategy = new ForeignKeyDependencyOrder(),
+        private ExecutionOrderStrategy $viewOrderStrategy = new ViewDependencyOrder(new Parser()),
+        private ExecutionOrderStrategy $materializedViewOrderStrategy = new MaterializedViewDependencyOrder(new Parser()),
+    ) {
+    }
+
+    /**
+     * @param null|ExecutionOrderStrategy<Table> $tableOrderStrategy
+     * @param null|ExecutionOrderStrategy<View> $viewOrderStrategy
+     * @param null|ExecutionOrderStrategy<MaterializedView> $materializedViewOrderStrategy
+     */
+    public static function create(
+        ?RenameStrategy $renameStrategy = null,
+        ?ViewDependencyResolver $viewDependencyResolver = null,
+        ?ExecutionOrderStrategy $tableOrderStrategy = null,
+        ?ExecutionOrderStrategy $viewOrderStrategy = null,
+        ?ExecutionOrderStrategy $materializedViewOrderStrategy = null,
+    ) : self {
+        $renameStrategy ??= new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+        $constraintComparator = new ConstraintComparator();
+        $indexComparator = new IndexComparator($renameStrategy);
+        $tableComparator = new TableComparator($indexComparator, $constraintComparator, $renameStrategy);
+        $tableStructureComparator = new TableStructureComparator($renameStrategy);
+
+        $tableOrderStrategy ??= new ForeignKeyDependencyOrder();
+        $viewOrderStrategy ??= new ViewDependencyOrder(new Parser());
+        $materializedViewOrderStrategy ??= new MaterializedViewDependencyOrder(new Parser());
+
+        return new self(
+            new SchemaComparator($tableComparator, $indexComparator, $constraintComparator, $tableStructureComparator, $tableOrderStrategy, $viewOrderStrategy, $materializedViewOrderStrategy),
+            $viewDependencyResolver ?? new AstViewDependencyResolver(new Parser()),
+            $tableOrderStrategy,
+            $viewOrderStrategy,
+            $materializedViewOrderStrategy,
+        );
+    }
+
+    public function compare(Catalog $source, Catalog $target) : CatalogDiff
+    {
+        $sourceNames = $source->names();
+        $targetNames = $target->names();
+
+        $addedSchemas = [];
+        $removedSchemas = [];
+        $modifiedSchemas = [];
+
+        foreach ($targetNames as $name) {
+            if (!\in_array($name, $sourceNames, true)) {
+                $addedSchemas[] = $target->get($name);
+            }
+        }
+
+        foreach ($sourceNames as $name) {
+            if (!\in_array($name, $targetNames, true)) {
+                $removedSchemas[] = $source->get($name);
+            }
+        }
+
+        foreach ($sourceNames as $name) {
+            if (!\in_array($name, $targetNames, true)) {
+                continue;
+            }
+
+            $schemaDiff = $this->schemaComparator->compare($source->get($name), $target->get($name));
+
+            if (!$schemaDiff->isEmpty()) {
+                $modifiedSchemas[] = $schemaDiff;
+            }
+        }
+
+        return new CatalogDiff($source, $target, $addedSchemas, $removedSchemas, $modifiedSchemas, $this->viewDependencyResolver, $this->tableOrderStrategy, $this->viewOrderStrategy, $this->materializedViewOrderStrategy);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/CatalogDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/CatalogDiff.php
new file mode 100644
index 0000000000..320412bddd
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/CatalogDiff.php
@@ -0,0 +1,169 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{create, drop, parsed_select};
+use Flow\PostgreSql\Parser;
+
+use Flow\PostgreSql\QueryBuilder\Schema\Index\IndexMethod as QbIndexMethod;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\{Catalog, ExecutionOrderStrategy, ForeignKeyDependencyOrder, IndexMethod, MaterializedView, MaterializedViewDependencyOrder, Schema, View, ViewDependencyOrder};
+use Flow\PostgreSql\Schema\Table;
+
+final readonly class CatalogDiff implements Diff
+{
+    /**
+     * @param list<Schema> $addedSchemas
+     * @param list<Schema> $removedSchemas
+     * @param list<SchemaDiff> $modifiedSchemas
+     * @param ExecutionOrderStrategy<Table> $tableOrderStrategy
+     * @param ExecutionOrderStrategy<View> $viewOrderStrategy
+     * @param ExecutionOrderStrategy<MaterializedView> $materializedViewOrderStrategy
+     */
+    public function __construct(
+        public Catalog $source,
+        public Catalog $target,
+        public array $addedSchemas = [],
+        public array $removedSchemas = [],
+        public array $modifiedSchemas = [],
+        private ViewDependencyResolver $viewDependencyResolver = new NoopViewDependencyResolver(),
+        private ExecutionOrderStrategy $tableOrderStrategy = new ForeignKeyDependencyOrder(),
+        private ExecutionOrderStrategy $viewOrderStrategy = new ViewDependencyOrder(new Parser()),
+        private ExecutionOrderStrategy $materializedViewOrderStrategy = new MaterializedViewDependencyOrder(new Parser()),
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        $sqls = [];
+
+        foreach ($this->addedSchemas as $schema) {
+            $sqls[] = create()->schema($schema->name)->ifNotExists();
+            $sqls = [...$sqls, ...$schema->toSql($this->tableOrderStrategy, $this->viewOrderStrategy, $this->materializedViewOrderStrategy)];
+        }
+
+        $dependentViews = $this->resolveDependentViews();
+
+        foreach ($dependentViews->toDrop as $dv) {
+            $sqls[] = $dv->view instanceof MaterializedView
+                ? drop()->materializedView($dv->qualifiedName())
+                : drop()->view($dv->qualifiedName());
+        }
+
+        foreach ($this->modifiedSchemas as $diff) {
+            $sqls = [...$sqls, ...$diff->generate()];
+        }
+
+        foreach ($dependentViews->toCreate as $dv) {
+            if ($dv->view instanceof MaterializedView) {
+                $sqls[] = create()->materializedView($dv->view->name, $dv->schema)->as(parsed_select($dv->view->definition));
+
+                foreach ($dv->view->indexes as $idx) {
+                    $builder = create()->index($idx->name);
+
+                    if ($idx->unique) {
+                        $builder = $builder->unique();
+                    }
+
+                    $onBuilder = $builder->on($dv->view->name, $dv->schema);
+
+                    if ($idx->method !== IndexMethod::BTREE) {
+                        $onBuilder = $onBuilder->using(QbIndexMethod::from($idx->method->value));
+                    }
+
+                    $sqls[] = $onBuilder->columns(...$idx->columns);
+                }
+            } else {
+                $sqls[] = create()->view($dv->view->name, $dv->schema)->as(parsed_select($dv->view->definition));
+            }
+        }
+
+        foreach ($this->removedSchemas as $schema) {
+            $sqls[] = drop()->schema($schema->name)->cascade();
+        }
+
+        return $sqls;
+    }
+
+    public function isEmpty() : bool
+    {
+        return $this->addedSchemas === []
+            && $this->removedSchemas === []
+            && $this->modifiedSchemas === [];
+    }
+
+    /**
+     * @return list<string>
+     */
+    private function collectModifiedTableNames() : array
+    {
+        $names = [];
+
+        foreach ($this->modifiedSchemas as $schemaDiff) {
+            foreach ($schemaDiff->modifiedTables as $tableDiff) {
+                if ($tableDiff->requiresViewRebuild()) {
+                    $names[] = $tableDiff->target->qualifiedName();
+                }
+            }
+        }
+
+        return $names;
+    }
+
+    private function resolveDependentViews() : DependentViews
+    {
+        $modifiedTableNames = $this->collectModifiedTableNames();
+
+        if ($modifiedTableNames === []) {
+            return DependentViews::empty();
+        }
+
+        $resolved = $this->viewDependencyResolver->resolve($this->source, $modifiedTableNames);
+
+        $excludedNames = $this->viewNamesAlreadyHandledByDiff();
+
+        if ($excludedNames === []) {
+            return $resolved;
+        }
+
+        $excludeSet = \array_flip($excludedNames);
+
+        return new DependentViews(
+            \array_values(\array_filter($resolved->toDrop, static fn (DependentView $dv) : bool => !\array_key_exists($dv->qualifiedName(), $excludeSet))),
+            \array_values(\array_filter($resolved->toCreate, static fn (DependentView $dv) : bool => !\array_key_exists($dv->qualifiedName(), $excludeSet))),
+        );
+    }
+
+    /**
+     * @return list<string>
+     */
+    private function viewNamesAlreadyHandledByDiff() : array
+    {
+        $names = [];
+
+        foreach ($this->modifiedSchemas as $schemaDiff) {
+            foreach ($schemaDiff->removedViews as $view) {
+                $names[] = $schemaDiff->source->name . '.' . $view->name;
+            }
+
+            foreach ($schemaDiff->modifiedViews as $viewDiff) {
+                $names[] = $schemaDiff->source->name . '.' . $viewDiff->target->name;
+            }
+
+            foreach ($schemaDiff->removedMaterializedViews as $mv) {
+                $names[] = $schemaDiff->source->name . '.' . $mv->name;
+            }
+
+            foreach ($schemaDiff->modifiedMaterializedViews as $mvDiff) {
+                $names[] = $schemaDiff->source->name . '.' . $mvDiff->target->name;
+            }
+        }
+
+        return $names;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ChangeSet.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ChangeSet.php
new file mode 100644
index 0000000000..e108585ac6
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ChangeSet.php
@@ -0,0 +1,84 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+/**
+ * @template T
+ * @template TDiff
+ */
+final readonly class ChangeSet
+{
+    /**
+     * @param list<T> $added
+     * @param list<T> $removed
+     * @param null|list<TDiff> $modified
+     * @param null|array<string, T> $renamed
+     */
+    public function __construct(
+        public array $added,
+        public array $removed,
+        public ?array $modified = null,
+        public ?array $renamed = null,
+    ) {
+    }
+
+    /**
+     * @template TObj
+     * @template TObjDiff
+     *
+     * @param list<TObj> $source
+     * @param list<TObj> $target
+     * @param callable(TObj): string $identityFn
+     * @param null|(callable(TObj, TObj): ?TObjDiff) $modifiedFn
+     *
+     * @return self<TObj, TObjDiff>
+     */
+    public static function fromNamedObjects(array $source, array $target, callable $identityFn, ?callable $modifiedFn = null) : self
+    {
+        $sourceMap = [];
+
+        foreach ($source as $item) {
+            $sourceMap[$identityFn($item)] = $item;
+        }
+
+        $targetMap = [];
+
+        foreach ($target as $item) {
+            $targetMap[$identityFn($item)] = $item;
+        }
+
+        $added = [];
+        $removed = [];
+        $modified = [];
+
+        foreach ($targetMap as $identity => $item) {
+            if (!array_key_exists($identity, $sourceMap)) {
+                $added[] = $item;
+            }
+        }
+
+        foreach ($sourceMap as $identity => $item) {
+            if (!array_key_exists($identity, $targetMap)) {
+                $removed[] = $item;
+            }
+        }
+
+        if ($modifiedFn !== null) {
+            foreach ($sourceMap as $identity => $sourceItem) {
+                if (!array_key_exists($identity, $targetMap)) {
+                    continue;
+                }
+
+                $diff = $modifiedFn($sourceItem, $targetMap[$identity]);
+
+                if ($diff !== null) {
+                    $modified[] = $diff;
+                }
+            }
+        }
+
+        return new self($added, $removed, $modified !== [] ? $modified : null);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ColumnDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ColumnDiff.php
new file mode 100644
index 0000000000..08ca5039ff
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ColumnDiff.php
@@ -0,0 +1,115 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{alter, column};
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Parser\ExpressionParser;
+use Flow\PostgreSql\QueryBuilder\Expression\ExpressionFactory;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\{Column, IdentityGeneration};
+
+final readonly class ColumnDiff implements Diff
+{
+    public function __construct(
+        public string $qualifiedTableName,
+        public Column $source,
+        public Column $target,
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        $sqls = [];
+        $columnName = $this->source->name;
+
+        if ($this->source->name !== $this->target->name) {
+            $sqls[] = alter()->table($this->qualifiedTableName)->renameColumn($this->source->name, $this->target->name);
+            $columnName = $this->target->name;
+        }
+
+        // PostgreSQL cannot ALTER generated columns or identity — must drop and re-add
+        if ($this->target->isGenerated !== $this->source->isGenerated || $this->target->generationExpression !== $this->source->generationExpression
+            || $this->target->isIdentity !== $this->source->isIdentity || $this->target->identityGeneration !== $this->source->identityGeneration) {
+            $sqls[] = alter()->table($this->qualifiedTableName)->dropColumn($columnName);
+
+            $colDef = column($this->target->name, $this->target->type);
+
+            if (!$this->target->nullable) {
+                $colDef = $colDef->notNull();
+            }
+
+            if ($this->target->default !== null) {
+                $colDef = $colDef->defaultRaw(ExpressionFactory::fromAst((new ExpressionParser(new Parser()))->parse($this->target->default)));
+            }
+
+            if ($this->target->isGenerated && $this->target->generationExpression !== null) {
+                $colDef = $colDef->generatedAs(ExpressionFactory::fromAst((new ExpressionParser(new Parser()))->parse($this->target->generationExpression)));
+            }
+
+            if ($this->target->isIdentity) {
+                $colDef = $colDef->identity($this->target->identityGeneration ?? IdentityGeneration::ALWAYS);
+            }
+
+            $sqls[] = alter()->table($this->qualifiedTableName)->addColumn($colDef);
+
+            return $sqls;
+        }
+
+        if (!$this->target->type->isEqual($this->source->type)) {
+            $sqls[] = alter()->table($this->qualifiedTableName)->alterColumnType($columnName, $this->target->type);
+        }
+
+        if ($this->target->nullable !== $this->source->nullable) {
+            $sqls[] = $this->target->nullable
+                ? alter()->table($this->qualifiedTableName)->alterColumnDropNotNull($columnName)
+                : alter()->table($this->qualifiedTableName)->alterColumnSetNotNull($columnName);
+        }
+
+        if ($this->target->default !== $this->source->default) {
+            $sqls[] = $this->target->default === null
+                ? alter()->table($this->qualifiedTableName)->alterColumnDropDefault($columnName)
+                : alter()->table($this->qualifiedTableName)->alterColumnSetDefault($columnName, ExpressionFactory::fromAst((new ExpressionParser(new Parser()))->parse($this->target->default)));
+        }
+
+        return $sqls;
+    }
+
+    public function hasDefaultChanged() : bool
+    {
+        return $this->source->default !== $this->target->default;
+    }
+
+    public function hasGenerationChanged() : bool
+    {
+        return $this->source->isGenerated !== $this->target->isGenerated
+            || $this->source->generationExpression !== $this->target->generationExpression;
+    }
+
+    public function hasIdentityChanged() : bool
+    {
+        return $this->source->isIdentity !== $this->target->isIdentity
+            || $this->source->identityGeneration !== $this->target->identityGeneration;
+    }
+
+    public function hasNameChanged() : bool
+    {
+        return $this->source->name !== $this->target->name;
+    }
+
+    public function hasNullableChanged() : bool
+    {
+        return $this->source->nullable !== $this->target->nullable;
+    }
+
+    public function hasTypeChanged() : bool
+    {
+        return !$this->source->type->isEqual($this->target->type);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ConstraintComparator.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ConstraintComparator.php
new file mode 100644
index 0000000000..5714a73f5b
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ConstraintComparator.php
@@ -0,0 +1,128 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Constraint\{CheckConstraint, ExcludeConstraint, ForeignKey, UniqueConstraint};
+
+final readonly class ConstraintComparator
+{
+    /**
+     * @param list<CheckConstraint> $sourceCcs
+     * @param list<CheckConstraint> $targetCcs
+     *
+     * @return ChangeSet<CheckConstraint, mixed>
+     */
+    public function diffCheckConstraints(array $sourceCcs, array $targetCcs) : ChangeSet
+    {
+        return $this->diffConstraints(
+            $sourceCcs,
+            $targetCcs,
+            static fn (CheckConstraint $cc) : string => $cc->name ?? $cc->expression,
+            static fn (CheckConstraint $a, CheckConstraint $b) : bool => $a->isEqualStructure($b),
+        );
+    }
+
+    /**
+     * @param list<ExcludeConstraint> $sourceEcs
+     * @param list<ExcludeConstraint> $targetEcs
+     *
+     * @return ChangeSet<ExcludeConstraint, mixed>
+     */
+    public function diffExcludeConstraints(array $sourceEcs, array $targetEcs) : ChangeSet
+    {
+        return $this->diffConstraints(
+            $sourceEcs,
+            $targetEcs,
+            static fn (ExcludeConstraint $ec) : string => $ec->name ?? $ec->definition,
+            static fn (ExcludeConstraint $a, ExcludeConstraint $b) : bool => $a->isEqualStructure($b),
+        );
+    }
+
+    /**
+     * @param list<ForeignKey> $sourceFks
+     * @param list<ForeignKey> $targetFks
+     *
+     * @return ChangeSet<ForeignKey, mixed>
+     */
+    public function diffForeignKeys(array $sourceFks, array $targetFks) : ChangeSet
+    {
+        return $this->diffConstraints(
+            $sourceFks,
+            $targetFks,
+            static fn (ForeignKey $fk) : string => $fk->name ?? \implode(',', $fk->columns) . '=>' . $fk->referenceSchema . '.' . $fk->referenceTable . '(' . \implode(',', $fk->referenceColumns) . ')',
+            static fn (ForeignKey $a, ForeignKey $b) : bool => $a->isEqualStructure($b),
+        );
+    }
+
+    /**
+     * @param list<UniqueConstraint> $sourceUcs
+     * @param list<UniqueConstraint> $targetUcs
+     *
+     * @return ChangeSet<UniqueConstraint, mixed>
+     */
+    public function diffUniqueConstraints(array $sourceUcs, array $targetUcs) : ChangeSet
+    {
+        return $this->diffConstraints(
+            $sourceUcs,
+            $targetUcs,
+            static function (UniqueConstraint $uc) : string {
+                if ($uc->name !== null) {
+                    return $uc->name;
+                }
+
+                $cols = $uc->columns;
+                \sort($cols);
+
+                return \implode(',', $cols);
+            },
+            static fn (UniqueConstraint $a, UniqueConstraint $b) : bool => $a->isEqualStructure($b),
+        );
+    }
+
+    /**
+     * @template T
+     *
+     * @param list<T> $sourceList
+     * @param list<T> $targetList
+     * @param callable(T): string $identityFn
+     * @param callable(T, T): bool $equalsFn
+     *
+     * @return ChangeSet<T, mixed>
+     */
+    private function diffConstraints(array $sourceList, array $targetList, callable $identityFn, callable $equalsFn) : ChangeSet
+    {
+        $sourceMap = [];
+
+        foreach ($sourceList as $item) {
+            $sourceMap[$identityFn($item)] = $item;
+        }
+
+        $targetMap = [];
+
+        foreach ($targetList as $item) {
+            $targetMap[$identityFn($item)] = $item;
+        }
+
+        $added = [];
+        $removed = [];
+
+        foreach ($targetMap as $identity => $item) {
+            if (!array_key_exists($identity, $sourceMap)) {
+                $added[] = $item;
+            } elseif (!$equalsFn($sourceMap[$identity], $item)) {
+                $removed[] = $sourceMap[$identity];
+                $added[] = $item;
+            }
+        }
+
+        foreach ($sourceMap as $identity => $item) {
+            if (!array_key_exists($identity, $targetMap)) {
+                $removed[] = $item;
+            }
+        }
+
+        return new ChangeSet($added, $removed);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/DependentView.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/DependentView.php
new file mode 100644
index 0000000000..03989fdfbc
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/DependentView.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Schema\{MaterializedView, View};
+
+final readonly class DependentView
+{
+    public function __construct(
+        public string $schema,
+        public View|MaterializedView $view,
+    ) {
+    }
+
+    public function qualifiedName() : string
+    {
+        return $this->schema . '.' . $this->view->name;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/DependentViews.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/DependentViews.php
new file mode 100644
index 0000000000..8564631660
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/DependentViews.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class DependentViews
+{
+    /**
+     * @param list<DependentView> $toDrop views to drop before table modifications, ordered most-dependent first
+     * @param list<DependentView> $toCreate views to recreate after table modifications, ordered least-dependent first
+     */
+    public function __construct(
+        public array $toDrop,
+        public array $toCreate,
+    ) {
+    }
+
+    public static function empty() : self
+    {
+        return new self([], []);
+    }
+
+    public function isEmpty() : bool
+    {
+        return $this->toDrop === [] && $this->toCreate === [];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/Diff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/Diff.php
new file mode 100644
index 0000000000..e93c7d636b
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/Diff.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+interface Diff
+{
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/DomainDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/DomainDiff.php
new file mode 100644
index 0000000000..d6a1c49285
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/DomainDiff.php
@@ -0,0 +1,87 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{alter, drop};
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Parser\ExpressionParser;
+use Flow\PostgreSql\QueryBuilder\Condition\ConditionFactory;
+use Flow\PostgreSql\QueryBuilder\Expression\ExpressionFactory;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\Constraint\CheckConstraint;
+use Flow\PostgreSql\Schema\Domain;
+
+final readonly class DomainDiff implements Diff
+{
+    /**
+     * @param list<CheckConstraint> $addedCheckConstraints
+     * @param list<CheckConstraint> $removedCheckConstraints
+     */
+    public function __construct(
+        public Domain $source,
+        public Domain $target,
+        public array $addedCheckConstraints = [],
+        public array $removedCheckConstraints = [],
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        if ($this->hasBaseTypeChanged()) {
+            return [drop()->domain($this->target->name)->cascade(), $this->target->toSql()];
+        }
+
+        $sqls = [];
+
+        if ($this->target->nullable !== $this->source->nullable) {
+            $sqls[] = $this->target->nullable
+                ? alter()->domain($this->target->name)->dropNotNull()
+                : alter()->domain($this->target->name)->setNotNull();
+        }
+
+        if ($this->target->default !== $this->source->default) {
+            $sqls[] = $this->target->default === null
+                ? alter()->domain($this->target->name)->dropDefault()
+                : alter()->domain($this->target->name)->setDefault(ExpressionFactory::fromAst((new ExpressionParser(new Parser()))->parse($this->target->default)));
+        }
+
+        foreach ($this->removedCheckConstraints as $cc) {
+            if ($cc->name === null) {
+                throw new \RuntimeException(\sprintf('Cannot drop unnamed check constraint on domain "%s". Constraint names are required for reversible migrations.', $this->target->name));
+            }
+
+            $sqls[] = alter()->domain($this->target->name)->dropConstraint($cc->name);
+        }
+
+        foreach ($this->addedCheckConstraints as $cc) {
+            if ($cc->name === null) {
+                throw new \RuntimeException(\sprintf('Cannot add unnamed check constraint on domain "%s". Constraint names are required for reversible migrations.', $this->target->name));
+            }
+
+            $sqls[] = alter()->domain($this->target->name)->addConstraint($cc->name, ConditionFactory::fromAst((new ExpressionParser(new Parser()))->parse($cc->expression)));
+        }
+
+        return $sqls;
+    }
+
+    public function hasBaseTypeChanged() : bool
+    {
+        return !$this->source->baseType->isEqual($this->target->baseType);
+    }
+
+    public function hasDefaultChanged() : bool
+    {
+        return $this->source->default !== $this->target->default;
+    }
+
+    public function hasNullableChanged() : bool
+    {
+        return $this->source->nullable !== $this->target->nullable;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ExtensionDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ExtensionDiff.php
new file mode 100644
index 0000000000..36c92159f3
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ExtensionDiff.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\alter;
+
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\Extension;
+
+final readonly class ExtensionDiff implements Diff
+{
+    public function __construct(
+        public Extension $source,
+        public Extension $target,
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        if (!$this->hasVersionChanged()) {
+            return [];
+        }
+
+        if ($this->target->version === null) {
+            return [alter()->extension($this->target->name)->update()];
+        }
+
+        return [alter()->extension($this->target->name)->updateTo($this->target->version)];
+    }
+
+    public function hasVersionChanged() : bool
+    {
+        return $this->source->version !== $this->target->version;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/FuncDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/FuncDiff.php
new file mode 100644
index 0000000000..8fedac41ec
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/FuncDiff.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\Func;
+
+final readonly class FuncDiff implements Diff
+{
+    public function __construct(
+        public Func $source,
+        public Func $target,
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        $sql = $this->target->toSql();
+
+        if ($sql === null) {
+            return [];
+        }
+
+        return [$sql];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/GreedySimilarityRenameStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/GreedySimilarityRenameStrategy.php
new file mode 100644
index 0000000000..4977222418
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/GreedySimilarityRenameStrategy.php
@@ -0,0 +1,70 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class GreedySimilarityRenameStrategy implements RenameStrategy
+{
+    public function __construct(
+        private SimilarityStrategy $similarity,
+    ) {
+    }
+
+    public function resolve(array $candidates) : array
+    {
+        $candidatesByAdded = [];
+
+        foreach ($candidates as $candidate) {
+            $candidatesByAdded[$candidate->addedName][] = $candidate->removedName;
+        }
+
+        $matched = [];
+        $matchedAdded = [];
+        $matchedRemoved = [];
+
+        foreach ($candidatesByAdded as $addedName => $removedCandidates) {
+            if (\count($removedCandidates) !== 1) {
+                continue;
+            }
+
+            $removedName = $removedCandidates[0];
+
+            if (array_key_exists($removedName, $matchedRemoved)) {
+                continue;
+            }
+
+            $matched[] = new RenameMatch($addedName, $removedName);
+            $matchedAdded[$addedName] = true;
+            $matchedRemoved[$removedName] = true;
+        }
+
+        $pairs = [];
+
+        foreach ($candidates as $candidate) {
+            if (array_key_exists($candidate->addedName, $matchedAdded) || array_key_exists($candidate->removedName, $matchedRemoved)) {
+                continue;
+            }
+
+            $score = $this->similarity->similarity($candidate->addedName, $candidate->removedName);
+
+            if ($score >= $this->similarity->threshold()) {
+                $pairs[] = ['added' => $candidate->addedName, 'removed' => $candidate->removedName, 'score' => $score];
+            }
+        }
+
+        \usort($pairs, static fn (array $a, array $b) : int => $b['score'] <=> $a['score']);
+
+        foreach ($pairs as $pair) {
+            if (array_key_exists($pair['added'], $matchedAdded) || array_key_exists($pair['removed'], $matchedRemoved)) {
+                continue;
+            }
+
+            $matched[] = new RenameMatch($pair['added'], $pair['removed']);
+            $matchedAdded[$pair['added']] = true;
+            $matchedRemoved[$pair['removed']] = true;
+        }
+
+        return $matched;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/IndexComparator.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/IndexComparator.php
new file mode 100644
index 0000000000..19441c00f8
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/IndexComparator.php
@@ -0,0 +1,98 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Index;
+
+final readonly class IndexComparator
+{
+    public function __construct(
+        private RenameStrategy $renameStrategy,
+    ) {
+    }
+
+    /**
+     * @param list<Index> $sourceIndexes
+     * @param list<Index> $targetIndexes
+     *
+     * @return ChangeSet<Index, mixed>
+     */
+    public function compare(array $sourceIndexes, array $targetIndexes) : ChangeSet
+    {
+        $sourceMap = [];
+
+        foreach ($sourceIndexes as $idx) {
+            $sourceMap[$idx->name] = $idx;
+        }
+
+        $targetMap = [];
+
+        foreach ($targetIndexes as $idx) {
+            $targetMap[$idx->name] = $idx;
+        }
+
+        $added = [];
+        $removed = [];
+
+        foreach ($targetMap as $name => $idx) {
+            if (!array_key_exists($name, $sourceMap)) {
+                $added[] = $idx;
+            } elseif (!$sourceMap[$name]->isEqualStructure($idx)) {
+                $removed[] = $sourceMap[$name];
+                $added[] = $idx;
+            }
+        }
+
+        foreach ($sourceMap as $name => $idx) {
+            if (!array_key_exists($name, $targetMap)) {
+                $removed[] = $idx;
+            }
+        }
+
+        $renameResult = $this->detectIndexRenames($added, $removed);
+
+        return new ChangeSet($renameResult->added, $renameResult->removed, renamed: $renameResult->renamed ?? []);
+    }
+
+    /**
+     * @param list<Index> $added
+     * @param list<Index> $removed
+     *
+     * @return ChangeSet<Index, mixed>
+     */
+    private function detectIndexRenames(array $added, array $removed) : ChangeSet
+    {
+        $addedMap = [];
+
+        foreach ($added as $idx) {
+            $addedMap[$idx->name] = $idx;
+        }
+
+        $removedMap = [];
+
+        foreach ($removed as $idx) {
+            $removedMap[$idx->name] = $idx;
+        }
+
+        $candidates = [];
+
+        foreach ($addedMap as $addedName => $addedIdx) {
+            foreach ($removedMap as $removedName => $removedIdx) {
+                if ($addedIdx->isEqualStructure($removedIdx)) {
+                    $candidates[] = new RenameCandidate($addedName, $removedName);
+                }
+            }
+        }
+
+        $renamed = [];
+
+        foreach ($this->renameStrategy->resolve($candidates) as $match) {
+            $renamed[$match->removedName] = $addedMap[$match->addedName];
+            unset($addedMap[$match->addedName], $removedMap[$match->removedName]);
+        }
+
+        return new ChangeSet(\array_values($addedMap), \array_values($removedMap), renamed: $renamed !== [] ? $renamed : null);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/LevenshteinStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/LevenshteinStrategy.php
new file mode 100644
index 0000000000..759a988369
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/LevenshteinStrategy.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class LevenshteinStrategy implements SimilarityStrategy
+{
+    public function __construct(
+        private float $threshold = 50.0,
+    ) {
+    }
+
+    public function similarity(string $a, string $b) : float
+    {
+        $maxLen = \max(\strlen($a), \strlen($b));
+
+        if ($maxLen === 0) {
+            return 100.0;
+        }
+
+        return (1.0 - \levenshtein($a, $b) / $maxLen) * 100.0;
+    }
+
+    public function threshold() : float
+    {
+        return $this->threshold;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/LongestCommonSubstringStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/LongestCommonSubstringStrategy.php
new file mode 100644
index 0000000000..4e28690653
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/LongestCommonSubstringStrategy.php
@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class LongestCommonSubstringStrategy implements SimilarityStrategy
+{
+    public function __construct(
+        private float $threshold = 50.0,
+    ) {
+    }
+
+    public function similarity(string $a, string $b) : float
+    {
+        $maxLen = \max(\strlen($a), \strlen($b));
+
+        if ($maxLen === 0) {
+            return 100.0;
+        }
+
+        $lenA = \strlen($a);
+        $lenB = \strlen($b);
+        $longest = 0;
+
+        $prev = \array_fill(0, $lenB + 1, 0);
+
+        for ($i = 1; $i <= $lenA; $i++) {
+            $curr = \array_fill(0, $lenB + 1, 0);
+
+            for ($j = 1; $j <= $lenB; $j++) {
+                if ($a[$i - 1] === $b[$j - 1]) {
+                    $curr[$j] = $prev[$j - 1] + 1;
+
+                    if ($curr[$j] > $longest) {
+                        $longest = $curr[$j];
+                    }
+                }
+            }
+
+            $prev = $curr;
+        }
+
+        return ($longest / $maxLen) * 100.0;
+    }
+
+    public function threshold() : float
+    {
+        return $this->threshold;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/MaterializedViewDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/MaterializedViewDiff.php
new file mode 100644
index 0000000000..f6d9c37aa8
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/MaterializedViewDiff.php
@@ -0,0 +1,72 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{create, drop};
+
+use Flow\PostgreSql\QueryBuilder\Schema\Index\IndexMethod as QbIndexMethod;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\{Index, IndexMethod, MaterializedView};
+
+final readonly class MaterializedViewDiff implements Diff
+{
+    /**
+     * @param list<Index> $addedIndexes
+     * @param list<Index> $removedIndexes
+     */
+    public function __construct(
+        public MaterializedView $source,
+        public MaterializedView $target,
+        public array $addedIndexes = [],
+        public array $removedIndexes = [],
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        $sqls = [];
+
+        if ($this->hasDefinitionChanged()) {
+            foreach ($this->source->indexes as $idx) {
+                $sqls[] = drop()->index($idx->name);
+            }
+
+            $sqls[] = drop()->materializedView($this->source->name);
+            $sqls = [...$sqls, ...$this->target->toSql()];
+
+            return $sqls;
+        }
+
+        foreach ($this->removedIndexes as $idx) {
+            $sqls[] = drop()->index($idx->name);
+        }
+
+        foreach ($this->addedIndexes as $idx) {
+            $builder = create()->index($idx->name);
+
+            if ($idx->unique) {
+                $builder = $builder->unique();
+            }
+
+            $onBuilder = $builder->on($this->target->name);
+
+            if ($idx->method !== IndexMethod::BTREE) {
+                $onBuilder = $onBuilder->using(QbIndexMethod::from($idx->method->value));
+            }
+
+            $sqls[] = $onBuilder->columns(...$idx->columns);
+        }
+
+        return $sqls;
+    }
+
+    public function hasDefinitionChanged() : bool
+    {
+        return $this->source->definition !== $this->target->definition;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/NoRenameStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/NoRenameStrategy.php
new file mode 100644
index 0000000000..45b92481e6
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/NoRenameStrategy.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class NoRenameStrategy implements RenameStrategy
+{
+    public function resolve(array $structuralMatches) : array
+    {
+        return [];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/NoSimilarityStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/NoSimilarityStrategy.php
new file mode 100644
index 0000000000..c178bcd8ae
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/NoSimilarityStrategy.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class NoSimilarityStrategy implements SimilarityStrategy
+{
+    public function similarity(string $a, string $b) : float
+    {
+        return 0.0;
+    }
+
+    public function threshold() : float
+    {
+        return 100.0;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/NoopViewDependencyResolver.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/NoopViewDependencyResolver.php
new file mode 100644
index 0000000000..cbb0b9e545
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/NoopViewDependencyResolver.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Catalog;
+
+final readonly class NoopViewDependencyResolver implements ViewDependencyResolver
+{
+    public function resolve(Catalog $catalog, array $modifiedTableQualifiedNames) : DependentViews
+    {
+        return DependentViews::empty();
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ProcedureDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ProcedureDiff.php
new file mode 100644
index 0000000000..77f808813c
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ProcedureDiff.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\Procedure;
+
+final readonly class ProcedureDiff implements Diff
+{
+    public function __construct(
+        public Procedure $source,
+        public Procedure $target,
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        $sql = $this->target->toSql();
+
+        if ($sql === null) {
+            return [];
+        }
+
+        return [$sql];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/RenameCandidate.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/RenameCandidate.php
new file mode 100644
index 0000000000..c35cd34c43
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/RenameCandidate.php
@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class RenameCandidate
+{
+    public function __construct(
+        public string $addedName,
+        public string $removedName,
+    ) {
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/RenameMatch.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/RenameMatch.php
new file mode 100644
index 0000000000..979e383a6a
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/RenameMatch.php
@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class RenameMatch
+{
+    public function __construct(
+        public string $addedName,
+        public string $removedName,
+    ) {
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/RenameStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/RenameStrategy.php
new file mode 100644
index 0000000000..98fe345070
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/RenameStrategy.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+interface RenameStrategy
+{
+    /**
+     * Given structurally matching candidate pairs (added name → removed name),
+     * determine which pairs are renames.
+     *
+     * @param list<RenameCandidate> $candidates
+     *
+     * @return list<RenameMatch>
+     */
+    public function resolve(array $candidates) : array;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SchemaComparator.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SchemaComparator.php
new file mode 100644
index 0000000000..e46aec5564
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SchemaComparator.php
@@ -0,0 +1,215 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Schema\{Domain, ExecutionOrderStrategy, Extension, ForeignKeyDependencyOrder, Func, MaterializedView, MaterializedViewDependencyOrder, Procedure, Schema, Sequence, Table, View, ViewDependencyOrder};
+
+final readonly class SchemaComparator
+{
+    /**
+     * @param ExecutionOrderStrategy<Table> $tableOrderStrategy
+     * @param ExecutionOrderStrategy<View> $viewOrderStrategy
+     * @param ExecutionOrderStrategy<MaterializedView> $materializedViewOrderStrategy
+     */
+    public function __construct(
+        private TableComparator $tableComparator,
+        private IndexComparator $indexComparator,
+        private ConstraintComparator $constraintComparator,
+        private TableStructureComparator $tableStructureComparator,
+        private ExecutionOrderStrategy $tableOrderStrategy = new ForeignKeyDependencyOrder(),
+        private ExecutionOrderStrategy $viewOrderStrategy = new ViewDependencyOrder(new Parser()),
+        private ExecutionOrderStrategy $materializedViewOrderStrategy = new MaterializedViewDependencyOrder(new Parser()),
+    ) {
+    }
+
+    public function compare(Schema $source, Schema $target) : SchemaDiff
+    {
+        $tables = $this->diffTables($source->tables, $target->tables);
+        $materializedViews = $this->diffMaterializedViews($source->materializedViews, $target->materializedViews);
+        $domains = $this->diffDomains($source->domains, $target->domains);
+
+        /** @var ChangeSet<Sequence, SequenceDiff> $sequences */
+        $sequences = ChangeSet::fromNamedObjects(
+            $source->sequences,
+            $target->sequences,
+            static fn (Sequence $s) : string => $s->name,
+            static fn (Sequence $a, Sequence $b) : ?SequenceDiff => $a->dataType === $b->dataType
+                && $a->startValue === $b->startValue
+                && $a->minValue === $b->minValue
+                && $a->maxValue === $b->maxValue
+                && $a->incrementBy === $b->incrementBy
+                && $a->cycle === $b->cycle
+                && $a->cacheValue === $b->cacheValue
+                && $a->ownedByTable === $b->ownedByTable
+                && $a->ownedByColumn === $b->ownedByColumn
+                    ? null
+                    : new SequenceDiff($a, $b),
+        );
+
+        /** @var ChangeSet<View, ViewDiff> $views */
+        $views = ChangeSet::fromNamedObjects(
+            $source->views,
+            $target->views,
+            static fn (View $v) : string => $v->name,
+            static fn (View $a, View $b) : ?ViewDiff => $a->definition === $b->definition
+                && $a->isUpdatable === $b->isUpdatable
+                    ? null
+                    : new ViewDiff($a, $b),
+        );
+
+        /** @var ChangeSet<Func, FuncDiff> $functions */
+        $functions = ChangeSet::fromNamedObjects(
+            $source->functions,
+            $target->functions,
+            static fn (Func $f) : string => $f->name,
+            static fn (Func $a, Func $b) : ?FuncDiff => $a->returnType === $b->returnType
+                && $a->argumentTypes === $b->argumentTypes
+                && $a->language === $b->language
+                && $a->definition === $b->definition
+                && $a->isStrict === $b->isStrict
+                && $a->volatility === $b->volatility
+                    ? null
+                    : new FuncDiff($a, $b),
+        );
+
+        /** @var ChangeSet<Procedure, ProcedureDiff> $procedures */
+        $procedures = ChangeSet::fromNamedObjects(
+            $source->procedures,
+            $target->procedures,
+            static fn (Procedure $p) : string => $p->name,
+            static fn (Procedure $a, Procedure $b) : ?ProcedureDiff => $a->argumentTypes === $b->argumentTypes
+                && $a->language === $b->language
+                && $a->definition === $b->definition
+                    ? null
+                    : new ProcedureDiff($a, $b),
+        );
+
+        /** @var ChangeSet<Extension, ExtensionDiff> $extensions */
+        $extensions = ChangeSet::fromNamedObjects(
+            $source->extensions,
+            $target->extensions,
+            static fn (Extension $e) : string => $e->name,
+            static fn (Extension $a, Extension $b) : ?ExtensionDiff => $a->version === $b->version
+                ? null
+                : new ExtensionDiff($a, $b),
+        );
+
+        return new SchemaDiff(
+            $source,
+            $target,
+            $tables->added,
+            $tables->removed,
+            $tables->modified ?? [],
+            $tables->renamed ?? [],
+            $sequences->added,
+            $sequences->removed,
+            $sequences->modified ?? [],
+            $views->added,
+            $views->removed,
+            $views->modified ?? [],
+            $materializedViews->added,
+            $materializedViews->removed,
+            $materializedViews->modified ?? [],
+            $functions->added,
+            $functions->removed,
+            $functions->modified ?? [],
+            $procedures->added,
+            $procedures->removed,
+            $procedures->modified ?? [],
+            $domains->added,
+            $domains->removed,
+            $domains->modified ?? [],
+            $extensions->added,
+            $extensions->removed,
+            $extensions->modified ?? [],
+            $this->tableOrderStrategy,
+            $this->viewOrderStrategy,
+            $this->materializedViewOrderStrategy,
+        );
+    }
+
+    /**
+     * @param list<Domain> $sourceDomains
+     * @param list<Domain> $targetDomains
+     *
+     * @return ChangeSet<Domain, DomainDiff>
+     */
+    private function diffDomains(array $sourceDomains, array $targetDomains) : ChangeSet
+    {
+        /** @var ChangeSet<Domain, DomainDiff> */
+        return ChangeSet::fromNamedObjects(
+            $sourceDomains,
+            $targetDomains,
+            static fn (Domain $d) : string => $d->name,
+            function (Domain $a, Domain $b) : ?DomainDiff {
+                $checkDiff = $this->constraintComparator->diffCheckConstraints($a->checkConstraints, $b->checkConstraints);
+
+                $hasPropertyChange = !$a->baseType->isEqual($b->baseType)
+                    || $a->nullable !== $b->nullable
+                    || $a->default !== $b->default;
+
+                if (!$hasPropertyChange && $checkDiff->added === [] && $checkDiff->removed === []) {
+                    return null;
+                }
+
+                return new DomainDiff($a, $b, $checkDiff->added, $checkDiff->removed);
+            },
+        );
+    }
+
+    /**
+     * @param list<MaterializedView> $sourceMViews
+     * @param list<MaterializedView> $targetMViews
+     *
+     * @return ChangeSet<MaterializedView, MaterializedViewDiff>
+     */
+    private function diffMaterializedViews(array $sourceMViews, array $targetMViews) : ChangeSet
+    {
+        /** @var ChangeSet<MaterializedView, MaterializedViewDiff> */
+        return ChangeSet::fromNamedObjects(
+            $sourceMViews,
+            $targetMViews,
+            static fn (MaterializedView $mv) : string => $mv->name,
+            function (MaterializedView $a, MaterializedView $b) : ?MaterializedViewDiff {
+                $indexChanges = $this->indexComparator->compare($a->indexes, $b->indexes);
+
+                if ($a->definition === $b->definition && $indexChanges->added === [] && $indexChanges->removed === [] && ($indexChanges->renamed === null || $indexChanges->renamed === [])) {
+                    return null;
+                }
+
+                return new MaterializedViewDiff($a, $b, $indexChanges->added, $indexChanges->removed);
+            },
+        );
+    }
+
+    /**
+     * @param list<Table> $sourceTables
+     * @param list<Table> $targetTables
+     *
+     * @return ChangeSet<Table, TableDiff>
+     */
+    private function diffTables(array $sourceTables, array $targetTables) : ChangeSet
+    {
+        /** @var ChangeSet<Table, TableDiff> $initial */
+        $initial = ChangeSet::fromNamedObjects(
+            $sourceTables,
+            $targetTables,
+            static fn (Table $t) : string => $t->name,
+            fn (Table $a, Table $b) : ?TableDiff => ($diff = $this->tableComparator->compare($a, $b))->isEmpty()
+                ? null
+                : $diff,
+        );
+
+        $renameResult = $this->tableStructureComparator->detectTableRenames($initial->added, $initial->removed);
+
+        return new ChangeSet(
+            $renameResult->added,
+            $renameResult->removed,
+            $initial->modified,
+            $renameResult->renamed,
+        );
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SchemaDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SchemaDiff.php
new file mode 100644
index 0000000000..f078162a36
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SchemaDiff.php
@@ -0,0 +1,212 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{alter, drop};
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\{Domain, ExecutionOrderStrategy, Extension, ForeignKeyDependencyOrder, Func, MaterializedView, MaterializedViewDependencyOrder, Procedure, Schema, Sequence, Table, View, ViewDependencyOrder};
+
+final readonly class SchemaDiff implements Diff
+{
+    /**
+     * @param list<Table> $addedTables
+     * @param list<Table> $removedTables
+     * @param list<TableDiff> $modifiedTables
+     * @param array<string, Table> $renamedTables old qualified name => new Table
+     * @param list<Sequence> $addedSequences
+     * @param list<Sequence> $removedSequences
+     * @param list<SequenceDiff> $modifiedSequences
+     * @param list<View> $addedViews
+     * @param list<View> $removedViews
+     * @param list<ViewDiff> $modifiedViews
+     * @param list<MaterializedView> $addedMaterializedViews
+     * @param list<MaterializedView> $removedMaterializedViews
+     * @param list<MaterializedViewDiff> $modifiedMaterializedViews
+     * @param list<Func> $addedFunctions
+     * @param list<Func> $removedFunctions
+     * @param list<FuncDiff> $modifiedFunctions
+     * @param list<Procedure> $addedProcedures
+     * @param list<Procedure> $removedProcedures
+     * @param list<ProcedureDiff> $modifiedProcedures
+     * @param list<Domain> $addedDomains
+     * @param list<Domain> $removedDomains
+     * @param list<DomainDiff> $modifiedDomains
+     * @param list<Extension> $addedExtensions
+     * @param list<Extension> $removedExtensions
+     * @param list<ExtensionDiff> $modifiedExtensions
+     * @param ExecutionOrderStrategy<Table> $tableOrderStrategy
+     * @param ExecutionOrderStrategy<View> $viewOrderStrategy
+     * @param ExecutionOrderStrategy<MaterializedView> $materializedViewOrderStrategy
+     */
+    public function __construct(
+        public Schema $source,
+        public Schema $target,
+        public array $addedTables = [],
+        public array $removedTables = [],
+        public array $modifiedTables = [],
+        public array $renamedTables = [],
+        public array $addedSequences = [],
+        public array $removedSequences = [],
+        public array $modifiedSequences = [],
+        public array $addedViews = [],
+        public array $removedViews = [],
+        public array $modifiedViews = [],
+        public array $addedMaterializedViews = [],
+        public array $removedMaterializedViews = [],
+        public array $modifiedMaterializedViews = [],
+        public array $addedFunctions = [],
+        public array $removedFunctions = [],
+        public array $modifiedFunctions = [],
+        public array $addedProcedures = [],
+        public array $removedProcedures = [],
+        public array $modifiedProcedures = [],
+        public array $addedDomains = [],
+        public array $removedDomains = [],
+        public array $modifiedDomains = [],
+        public array $addedExtensions = [],
+        public array $removedExtensions = [],
+        public array $modifiedExtensions = [],
+        private ExecutionOrderStrategy $tableOrderStrategy = new ForeignKeyDependencyOrder(),
+        private ExecutionOrderStrategy $viewOrderStrategy = new ViewDependencyOrder(new Parser()),
+        private ExecutionOrderStrategy $materializedViewOrderStrategy = new MaterializedViewDependencyOrder(new Parser()),
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        return [
+            ...(new Schema($this->target->name, $this->addedTables, $this->addedSequences, $this->addedViews, $this->addedMaterializedViews, $this->addedFunctions, $this->addedProcedures, $this->addedDomains, $this->addedExtensions))->toSql($this->tableOrderStrategy, $this->viewOrderStrategy, $this->materializedViewOrderStrategy),
+            ...$this->modifiedSqls(),
+            ...$this->renamedTableSqls(),
+            ...$this->dropObjectSqls($this->removedMaterializedViews, $this->removedViews, $this->removedTables, $this->removedProcedures, $this->removedFunctions, $this->removedSequences, $this->removedDomains, $this->removedExtensions),
+        ];
+    }
+
+    public function isEmpty() : bool
+    {
+        return $this->addedTables === []
+            && $this->removedTables === []
+            && $this->modifiedTables === []
+            && $this->renamedTables === []
+            && $this->addedSequences === []
+            && $this->removedSequences === []
+            && $this->modifiedSequences === []
+            && $this->addedViews === []
+            && $this->removedViews === []
+            && $this->modifiedViews === []
+            && $this->addedMaterializedViews === []
+            && $this->removedMaterializedViews === []
+            && $this->modifiedMaterializedViews === []
+            && $this->addedFunctions === []
+            && $this->removedFunctions === []
+            && $this->modifiedFunctions === []
+            && $this->addedProcedures === []
+            && $this->removedProcedures === []
+            && $this->modifiedProcedures === []
+            && $this->addedDomains === []
+            && $this->removedDomains === []
+            && $this->modifiedDomains === []
+            && $this->addedExtensions === []
+            && $this->removedExtensions === []
+            && $this->modifiedExtensions === [];
+    }
+
+    /**
+     * @param list<MaterializedView> $materializedViews
+     * @param list<View> $views
+     * @param list<Table> $tables
+     * @param list<Procedure> $procedures
+     * @param list<Func> $functions
+     * @param list<Sequence> $sequences
+     * @param list<Domain> $domains
+     * @param list<Extension> $extensions
+     *
+     * @return list<Sql>
+     */
+    private function dropObjectSqls(array $materializedViews, array $views, array $tables, array $procedures, array $functions, array $sequences, array $domains, array $extensions) : array
+    {
+        $sqls = [];
+
+        foreach ($materializedViews as $mv) {
+            $sqls[] = drop()->materializedView($mv->name);
+        }
+
+        foreach ($views as $view) {
+            $sqls[] = drop()->view($view->name);
+        }
+
+        foreach ($tables as $table) {
+            $sqls[] = drop()->table($table->qualifiedName())->cascade();
+        }
+
+        foreach ($procedures as $proc) {
+            $sqls[] = drop()->procedure($proc->name);
+        }
+
+        foreach ($functions as $func) {
+            $sqls[] = drop()->function($func->name);
+        }
+
+        foreach ($sequences as $seq) {
+            $sqls[] = drop()->sequence($seq->name);
+        }
+
+        foreach ($domains as $domain) {
+            $sqls[] = drop()->domain($domain->name)->cascade();
+        }
+
+        foreach ($extensions as $ext) {
+            $sqls[] = drop()->extension($ext->name);
+        }
+
+        return $sqls;
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    private function modifiedSqls() : array
+    {
+        $sqls = [];
+
+        $diffs = [
+            $this->modifiedExtensions,
+            $this->modifiedDomains,
+            $this->modifiedSequences,
+            $this->modifiedFunctions,
+            $this->modifiedProcedures,
+            $this->modifiedTables,
+            $this->modifiedViews,
+            $this->modifiedMaterializedViews,
+        ];
+
+        foreach ($diffs as $diffGroup) {
+            foreach ($diffGroup as $diff) {
+                $sqls = [...$sqls, ...$diff->generate()];
+            }
+        }
+
+        return $sqls;
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    private function renamedTableSqls() : array
+    {
+        $sqls = [];
+
+        foreach ($this->renamedTables as $oldQualifiedName => $newTable) {
+            $sqls[] = alter()->table($oldQualifiedName)->renameTo($newTable->name);
+        }
+
+        return $sqls;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SequenceDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SequenceDiff.php
new file mode 100644
index 0000000000..2ab6a94de8
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SequenceDiff.php
@@ -0,0 +1,82 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\alter;
+
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\Sequence;
+
+final readonly class SequenceDiff implements Diff
+{
+    public function __construct(
+        public Sequence $source,
+        public Sequence $target,
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        $builder = alter()->sequence($this->target->name);
+        $hasChanges = false;
+
+        if ($this->target->dataType !== $this->source->dataType) {
+            $builder = $builder->asType($this->target->dataType);
+            $hasChanges = true;
+        }
+
+        if ($this->target->incrementBy !== $this->source->incrementBy) {
+            $builder = $builder->incrementBy((int) $this->target->incrementBy);
+            $hasChanges = true;
+        }
+
+        if ($this->target->startValue !== $this->source->startValue) {
+            $builder = $builder->startWith((int) $this->target->startValue);
+            $hasChanges = true;
+        }
+
+        if ($this->target->minValue !== $this->source->minValue) {
+            $builder = $builder->minValue((int) $this->target->minValue);
+            $hasChanges = true;
+        }
+
+        if ($this->target->maxValue !== $this->source->maxValue) {
+            if ($this->target->maxValue === null) {
+                $builder = $builder->noMaxValue();
+            } else {
+                $builder = $builder->maxValue((int) $this->target->maxValue);
+            }
+            $hasChanges = true;
+        }
+
+        if ($this->target->cacheValue !== $this->source->cacheValue) {
+            $builder = $builder->cache((int) $this->target->cacheValue);
+            $hasChanges = true;
+        }
+
+        if ($this->target->cycle !== $this->source->cycle) {
+            $builder = $this->target->cycle ? $builder->cycle() : $builder->noCycle();
+            $hasChanges = true;
+        }
+
+        if ($this->target->ownedByTable !== $this->source->ownedByTable || $this->target->ownedByColumn !== $this->source->ownedByColumn) {
+            if ($this->target->ownedByTable !== null && $this->target->ownedByColumn !== null) {
+                $builder = $builder->ownedBy($this->target->ownedByTable, $this->target->ownedByColumn);
+            } else {
+                $builder = $builder->ownedByNone();
+            }
+            $hasChanges = true;
+        }
+
+        if (!$hasChanges) {
+            return [];
+        }
+
+        return [$builder];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SimilarTextStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SimilarTextStrategy.php
new file mode 100644
index 0000000000..6e2b96ae6d
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SimilarTextStrategy.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class SimilarTextStrategy implements SimilarityStrategy
+{
+    public function __construct(
+        private float $threshold = 50.0,
+    ) {
+    }
+
+    public function similarity(string $a, string $b) : float
+    {
+        \similar_text($a, $b, $percent);
+
+        return $percent;
+    }
+
+    public function threshold() : float
+    {
+        return $this->threshold;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SimilarityStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SimilarityStrategy.php
new file mode 100644
index 0000000000..b2bb0e9a51
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/SimilarityStrategy.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+interface SimilarityStrategy
+{
+    /**
+     * Returns a similarity score between two names as a percentage (0.0–100.0).
+     */
+    public function similarity(string $a, string $b) : float;
+
+    /**
+     * Minimum similarity score (0.0–100.0) required to consider two names as a rename candidate.
+     */
+    public function threshold() : float;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/StrictRenameStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/StrictRenameStrategy.php
new file mode 100644
index 0000000000..05468a34cb
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/StrictRenameStrategy.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+final readonly class StrictRenameStrategy implements RenameStrategy
+{
+    public function resolve(array $candidates) : array
+    {
+        $candidatesByAdded = [];
+
+        foreach ($candidates as $candidate) {
+            $candidatesByAdded[$candidate->addedName][] = $candidate->removedName;
+        }
+
+        $matched = [];
+        $matchedRemoved = [];
+
+        foreach ($candidatesByAdded as $addedName => $removedCandidates) {
+            if (\count($removedCandidates) !== 1) {
+                continue;
+            }
+
+            $removedName = $removedCandidates[0];
+
+            if (array_key_exists($removedName, $matchedRemoved)) {
+                continue;
+            }
+
+            $matched[] = new RenameMatch($addedName, $removedName);
+            $matchedRemoved[$removedName] = true;
+        }
+
+        return $matched;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/TableComparator.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/TableComparator.php
new file mode 100644
index 0000000000..0418529a9d
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/TableComparator.php
@@ -0,0 +1,206 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Schema\{Column, Table, Trigger};
+use Flow\PostgreSql\Schema\Constraint\PrimaryKey;
+
+final readonly class TableComparator
+{
+    public function __construct(
+        private IndexComparator $indexComparator,
+        private ConstraintComparator $constraintComparator,
+        private RenameStrategy $renameStrategy,
+    ) {
+    }
+
+    public function compare(Table $source, Table $target) : TableDiff
+    {
+        $sourceColumnMap = [];
+
+        foreach ($source->columns as $col) {
+            $sourceColumnMap[$col->name] = $col;
+        }
+
+        $targetColumnMap = [];
+
+        foreach ($target->columns as $col) {
+            $targetColumnMap[$col->name] = $col;
+        }
+
+        $addedColumns = [];
+        $removedColumns = [];
+        $modifiedColumns = [];
+
+        foreach ($targetColumnMap as $name => $col) {
+            if (!array_key_exists($name, $sourceColumnMap)) {
+                $addedColumns[$name] = $col;
+            }
+        }
+
+        foreach ($sourceColumnMap as $name => $col) {
+            if (!array_key_exists($name, $targetColumnMap)) {
+                $removedColumns[$name] = $col;
+            }
+        }
+
+        $this->detectColumnRenames($source->qualifiedName(), $addedColumns, $removedColumns, $modifiedColumns);
+
+        foreach ($sourceColumnMap as $name => $sourceCol) {
+            if (!array_key_exists($name, $targetColumnMap)) {
+                continue;
+            }
+
+            if (!$sourceCol->isEqual($targetColumnMap[$name])) {
+                $modifiedColumns[] = new ColumnDiff($source->qualifiedName(), $sourceCol, $targetColumnMap[$name]);
+            }
+        }
+
+        $indexes = $this->indexComparator->compare($source->indexes, $target->indexes);
+        $foreignKeys = $this->constraintComparator->diffForeignKeys($source->foreignKeys, $target->foreignKeys);
+        $uniqueConstraints = $this->constraintComparator->diffUniqueConstraints($source->uniqueConstraints, $target->uniqueConstraints);
+        $checkConstraints = $this->constraintComparator->diffCheckConstraints($source->checkConstraints, $target->checkConstraints);
+        $excludeConstraints = $this->constraintComparator->diffExcludeConstraints($source->excludeConstraints, $target->excludeConstraints);
+        $triggers = $this->diffTriggers($source->triggers, $target->triggers);
+
+        $partitionChanged = $source->partitionStrategy !== $target->partitionStrategy
+            || $source->partitionColumns !== $target->partitionColumns;
+
+        $sourceInherits = $source->inherits;
+        $targetInherits = $target->inherits;
+        \sort($sourceInherits);
+        \sort($targetInherits);
+        $addedInherits = \array_values(\array_diff($targetInherits, $sourceInherits));
+        $removedInherits = \array_values(\array_diff($sourceInherits, $targetInherits));
+
+        $tablespaceChanged = $source->tablespace !== $target->tablespace;
+
+        return new TableDiff(
+            $source,
+            $target,
+            \array_values($addedColumns),
+            \array_values($removedColumns),
+            $modifiedColumns,
+            $this->diffPrimaryKeyAdded($source->primaryKey, $target->primaryKey),
+            $this->diffPrimaryKeyRemoved($source->primaryKey, $target->primaryKey),
+            $indexes->added,
+            $indexes->removed,
+            $indexes->renamed ?? [],
+            $foreignKeys->added,
+            $foreignKeys->removed,
+            $uniqueConstraints->added,
+            $uniqueConstraints->removed,
+            $checkConstraints->added,
+            $checkConstraints->removed,
+            $excludeConstraints->added,
+            $excludeConstraints->removed,
+            $triggers->added,
+            $triggers->removed,
+            $source->unlogged !== $target->unlogged,
+            $partitionChanged,
+            $addedInherits,
+            $removedInherits,
+            $tablespaceChanged,
+        );
+    }
+
+    /**
+     * @param array<string, Column> $addedColumns
+     * @param array<string, Column> $removedColumns
+     * @param list<ColumnDiff> $modifiedColumns
+     */
+    private function detectColumnRenames(string $qualifiedTableName, array &$addedColumns, array &$removedColumns, array &$modifiedColumns) : void
+    {
+        $candidates = [];
+
+        foreach ($addedColumns as $addedName => $addedCol) {
+            foreach ($removedColumns as $removedName => $removedCol) {
+                if ($addedCol->isEqualStructure($removedCol)) {
+                    $candidates[] = new RenameCandidate($addedName, $removedName);
+                }
+            }
+        }
+
+        foreach ($this->renameStrategy->resolve($candidates) as $match) {
+            $modifiedColumns[] = new ColumnDiff($qualifiedTableName, $removedColumns[$match->removedName], $addedColumns[$match->addedName]);
+            unset($addedColumns[$match->addedName], $removedColumns[$match->removedName]);
+        }
+    }
+
+    private function diffPrimaryKeyAdded(?PrimaryKey $source, ?PrimaryKey $target) : ?PrimaryKey
+    {
+        if ($target === null) {
+            return null;
+        }
+
+        if ($source === null) {
+            return $target;
+        }
+
+        if ($source->isEqualStructure($target)) {
+            return null;
+        }
+
+        return $target;
+    }
+
+    private function diffPrimaryKeyRemoved(?PrimaryKey $source, ?PrimaryKey $target) : ?PrimaryKey
+    {
+        if ($source === null) {
+            return null;
+        }
+
+        if ($target === null) {
+            return $source;
+        }
+
+        if ($source->isEqualStructure($target)) {
+            return null;
+        }
+
+        return $source;
+    }
+
+    /**
+     * @param list<Trigger> $sourceTriggers
+     * @param list<Trigger> $targetTriggers
+     *
+     * @return ChangeSet<Trigger, mixed>
+     */
+    private function diffTriggers(array $sourceTriggers, array $targetTriggers) : ChangeSet
+    {
+        $sourceMap = [];
+
+        foreach ($sourceTriggers as $trigger) {
+            $sourceMap[$trigger->name] = $trigger;
+        }
+
+        $targetMap = [];
+
+        foreach ($targetTriggers as $trigger) {
+            $targetMap[$trigger->name] = $trigger;
+        }
+
+        $added = [];
+        $removed = [];
+
+        foreach ($targetMap as $name => $trigger) {
+            if (!array_key_exists($name, $sourceMap)) {
+                $added[] = $trigger;
+            } elseif (!$sourceMap[$name]->isEqual($trigger)) {
+                $removed[] = $sourceMap[$name];
+                $added[] = $trigger;
+            }
+        }
+
+        foreach ($sourceMap as $name => $trigger) {
+            if (!array_key_exists($name, $targetMap)) {
+                $removed[] = $trigger;
+            }
+        }
+
+        return new ChangeSet($added, $removed);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/TableDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/TableDiff.php
new file mode 100644
index 0000000000..c02a5b0c98
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/TableDiff.php
@@ -0,0 +1,326 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{alter, column, create, drop};
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Parser\ExpressionParser;
+use Flow\PostgreSql\QueryBuilder\Condition\ConditionFactory;
+use Flow\PostgreSql\QueryBuilder\Expression\ExpressionFactory;
+use Flow\PostgreSql\QueryBuilder\Schema\Constraint\{CheckConstraint as CheckConstraintBuilder, ForeignKeyConstraint, PrimaryKeyConstraint, UniqueConstraint as UniqueConstraintBuilder};
+use Flow\PostgreSql\QueryBuilder\Schema\Index\IndexMethod as QbIndexMethod;
+use Flow\PostgreSql\QueryBuilder\Schema\Trigger\TriggerEvent as QbTriggerEvent;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\{Column, IdentityGeneration, Index, IndexMethod, Table, Trigger, TriggerEvent, TriggerTiming};
+use Flow\PostgreSql\Schema\Constraint\{CheckConstraint, ExcludeConstraint, ForeignKey, PrimaryKey, UniqueConstraint};
+
+final readonly class TableDiff implements Diff
+{
+    /**
+     * @param list<Column> $addedColumns
+     * @param list<Column> $removedColumns
+     * @param list<ColumnDiff> $modifiedColumns
+     * @param list<Index> $addedIndexes
+     * @param list<Index> $removedIndexes
+     * @param array<string, Index> $renamedIndexes
+     * @param list<ForeignKey> $addedForeignKeys
+     * @param list<ForeignKey> $removedForeignKeys
+     * @param list<UniqueConstraint> $addedUniqueConstraints
+     * @param list<UniqueConstraint> $removedUniqueConstraints
+     * @param list<CheckConstraint> $addedCheckConstraints
+     * @param list<CheckConstraint> $removedCheckConstraints
+     * @param list<ExcludeConstraint> $addedExcludeConstraints
+     * @param list<ExcludeConstraint> $removedExcludeConstraints
+     * @param list<Trigger> $addedTriggers
+     * @param list<Trigger> $removedTriggers
+     * @param list<string> $addedInherits
+     * @param list<string> $removedInherits
+     */
+    public function __construct(
+        public Table $source,
+        public Table $target,
+        public array $addedColumns = [],
+        public array $removedColumns = [],
+        public array $modifiedColumns = [],
+        public ?PrimaryKey $addedPrimaryKey = null,
+        public ?PrimaryKey $removedPrimaryKey = null,
+        public array $addedIndexes = [],
+        public array $removedIndexes = [],
+        public array $renamedIndexes = [],
+        public array $addedForeignKeys = [],
+        public array $removedForeignKeys = [],
+        public array $addedUniqueConstraints = [],
+        public array $removedUniqueConstraints = [],
+        public array $addedCheckConstraints = [],
+        public array $removedCheckConstraints = [],
+        public array $addedExcludeConstraints = [],
+        public array $removedExcludeConstraints = [],
+        public array $addedTriggers = [],
+        public array $removedTriggers = [],
+        public bool $unloggedChanged = false,
+        public bool $partitionChanged = false,
+        public array $addedInherits = [],
+        public array $removedInherits = [],
+        public bool $tablespaceChanged = false,
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        $sqls = [];
+        $qualifiedName = $this->target->qualifiedName();
+
+        if ($this->partitionChanged) {
+            throw new \RuntimeException(\sprintf(
+                'Partition strategy change on table "%s" cannot be applied via ALTER TABLE. The table must be recreated.',
+                $qualifiedName,
+            ));
+        }
+
+        if ($this->unloggedChanged) {
+            $sqls[] = $this->target->unlogged
+                ? alter()->table($qualifiedName)->setUnlogged()
+                : alter()->table($qualifiedName)->setLogged();
+        }
+
+        foreach ($this->removedInherits as $parent) {
+            $sqls[] = alter()->table($qualifiedName)->dropInherit($parent);
+        }
+
+        foreach ($this->removedForeignKeys as $fk) {
+            if ($fk->name === null) {
+                throw new \RuntimeException(\sprintf('Cannot drop unnamed foreign key on table "%s". Constraint names are required for reversible migrations.', $qualifiedName));
+            }
+            $sqls[] = alter()->table($qualifiedName)->dropConstraint($fk->name);
+        }
+
+        foreach ($this->removedIndexes as $idx) {
+            $sqls[] = drop()->index($idx->name);
+        }
+
+        foreach ($this->removedUniqueConstraints as $uc) {
+            if ($uc->name === null) {
+                throw new \RuntimeException(\sprintf('Cannot drop unnamed unique constraint on table "%s". Constraint names are required for reversible migrations.', $qualifiedName));
+            }
+            $sqls[] = alter()->table($qualifiedName)->dropConstraint($uc->name);
+        }
+
+        foreach ($this->removedCheckConstraints as $cc) {
+            if ($cc->name === null) {
+                throw new \RuntimeException(\sprintf('Cannot drop unnamed check constraint on table "%s". Constraint names are required for reversible migrations.', $qualifiedName));
+            }
+            $sqls[] = alter()->table($qualifiedName)->dropConstraint($cc->name);
+        }
+
+        foreach ($this->removedExcludeConstraints as $ec) {
+            if ($ec->name === null) {
+                throw new \RuntimeException(\sprintf('Cannot drop unnamed exclude constraint on table "%s". Constraint names are required for reversible migrations.', $qualifiedName));
+            }
+            $sqls[] = alter()->table($qualifiedName)->dropConstraint($ec->name);
+        }
+
+        if ($this->removedPrimaryKey !== null) {
+            if ($this->removedPrimaryKey->name === null) {
+                throw new \RuntimeException(\sprintf('Cannot drop unnamed primary key on table "%s". Constraint names are required for reversible migrations.', $qualifiedName));
+            }
+            $sqls[] = alter()->table($qualifiedName)->dropConstraint($this->removedPrimaryKey->name);
+        }
+
+        foreach ($this->removedTriggers as $trigger) {
+            $sqls[] = drop()->trigger($trigger->name)->on($this->target->name, $this->target->schema);
+        }
+
+        foreach ($this->removedColumns as $col) {
+            $sqls[] = alter()->table($qualifiedName)->dropColumn($col->name);
+        }
+
+        foreach ($this->addedColumns as $col) {
+            $colDef = column($col->name, $col->type);
+
+            if (!$col->nullable) {
+                $colDef = $colDef->notNull();
+            }
+
+            if ($col->default !== null) {
+                $colDef = $colDef->defaultRaw(ExpressionFactory::fromAst((new ExpressionParser(new Parser()))->parse($col->default)));
+            }
+
+            if ($col->isIdentity) {
+                $colDef = $colDef->identity($col->identityGeneration ?? IdentityGeneration::ALWAYS);
+            }
+
+            if ($col->isGenerated && $col->generationExpression !== null) {
+                $colDef = $colDef->generatedAs(ExpressionFactory::fromAst((new ExpressionParser(new Parser()))->parse($col->generationExpression)));
+            }
+
+            $sqls[] = alter()->table($qualifiedName)->addColumn($colDef);
+        }
+
+        foreach ($this->modifiedColumns as $colDiff) {
+            $sqls = [...$sqls, ...$colDiff->generate()];
+        }
+
+        if ($this->addedPrimaryKey !== null) {
+            $constraint = PrimaryKeyConstraint::create(...$this->addedPrimaryKey->columns);
+
+            if ($this->addedPrimaryKey->name !== null) {
+                $constraint = $constraint->name($this->addedPrimaryKey->name);
+            }
+            $sqls[] = alter()->table($qualifiedName)->addConstraint($constraint);
+        }
+
+        foreach ($this->addedIndexes as $idx) {
+            $builder = create()->index($idx->name);
+
+            if ($idx->unique) {
+                $builder = $builder->unique();
+            }
+
+            $onBuilder = $builder->on($this->target->name, $this->target->schema);
+
+            if ($idx->method !== IndexMethod::BTREE) {
+                $onBuilder = $onBuilder->using(QbIndexMethod::from($idx->method->value));
+            }
+
+            $sqls[] = $onBuilder->columns(...$idx->columns);
+        }
+
+        foreach ($this->renamedIndexes as $oldName => $newIndex) {
+            $sqls[] = alter()->index($oldName, $this->target->schema)->renameTo($newIndex->name);
+        }
+
+        foreach ($this->addedUniqueConstraints as $uc) {
+            $constraint = UniqueConstraintBuilder::create(...$uc->columns);
+
+            if ($uc->name !== null) {
+                $constraint = $constraint->name($uc->name);
+            }
+
+            if ($uc->nullsNotDistinct) {
+                $constraint = $constraint->nullsNotDistinct();
+            }
+            $sqls[] = alter()->table($qualifiedName)->addConstraint($constraint);
+        }
+
+        foreach ($this->addedCheckConstraints as $cc) {
+            $constraint = CheckConstraintBuilder::create(ConditionFactory::fromAst((new ExpressionParser(new Parser()))->parse($cc->expression)));
+
+            if ($cc->name !== null) {
+                $constraint = $constraint->name($cc->name);
+            }
+
+            if ($cc->noInherit) {
+                $constraint = $constraint->noInherit();
+            }
+            $sqls[] = alter()->table($qualifiedName)->addConstraint($constraint);
+        }
+
+        foreach ($this->addedExcludeConstraints as $ec) {
+            if ($ec->name === null) {
+                throw new \RuntimeException(\sprintf('Cannot add unnamed exclude constraint on table "%s". Constraint names are required for reversible migrations.', $qualifiedName));
+            }
+
+            $sqls[] = alter()->table($qualifiedName)->addConstraint(
+                \Flow\PostgreSql\QueryBuilder\Schema\Constraint\ExcludeConstraint::create()->name($ec->name),
+            );
+        }
+
+        foreach ($this->addedForeignKeys as $fk) {
+            $refTable = $fk->referenceSchema . '.' . $fk->referenceTable;
+            $constraint = ForeignKeyConstraint::create($fk->columns, $refTable, $fk->referenceColumns)
+                ->onUpdate($fk->onUpdate)
+                ->onDelete($fk->onDelete);
+
+            if ($fk->name !== null) {
+                $constraint = $constraint->name($fk->name);
+            }
+
+            if ($fk->deferrable) {
+                $constraint = $constraint->deferrable($fk->initiallyDeferred);
+            }
+
+            $sqls[] = alter()->table($qualifiedName)->addConstraint($constraint);
+        }
+
+        foreach ($this->addedTriggers as $trigger) {
+            $qbEvents = \array_map(
+                static fn (TriggerEvent $e) : QbTriggerEvent => QbTriggerEvent::{$e->name},
+                $trigger->events,
+            );
+
+            $triggerBuilder = create()->trigger($trigger->name);
+
+            $onStep = match ($trigger->timing) {
+                TriggerTiming::BEFORE => $triggerBuilder->before(...$qbEvents),
+                TriggerTiming::AFTER => $triggerBuilder->after(...$qbEvents),
+                TriggerTiming::INSTEAD_OF => $triggerBuilder->insteadOf(...$qbEvents),
+            };
+
+            $optionsStep = $onStep->on($this->target->name, $this->target->schema);
+
+            if ($trigger->forEachRow) {
+                $optionsStep = $optionsStep->forEachRow();
+            }
+
+            $sqls[] = $optionsStep->execute($trigger->functionName);
+        }
+
+        foreach ($this->addedInherits as $parent) {
+            $sqls[] = alter()->table($qualifiedName)->addInherit($parent);
+        }
+
+        if ($this->tablespaceChanged && $this->target->tablespace !== null) {
+            $sqls[] = alter()->table($qualifiedName)->setTablespace($this->target->tablespace);
+        }
+
+        return $sqls;
+    }
+
+    public function isEmpty() : bool
+    {
+        return $this->addedColumns === []
+            && $this->removedColumns === []
+            && $this->modifiedColumns === []
+            && $this->addedPrimaryKey === null
+            && $this->removedPrimaryKey === null
+            && $this->addedIndexes === []
+            && $this->removedIndexes === []
+            && $this->renamedIndexes === []
+            && $this->addedForeignKeys === []
+            && $this->removedForeignKeys === []
+            && $this->addedUniqueConstraints === []
+            && $this->removedUniqueConstraints === []
+            && $this->addedCheckConstraints === []
+            && $this->removedCheckConstraints === []
+            && $this->addedExcludeConstraints === []
+            && $this->removedExcludeConstraints === []
+            && $this->addedTriggers === []
+            && $this->removedTriggers === []
+            && !$this->unloggedChanged
+            && !$this->partitionChanged
+            && $this->addedInherits === []
+            && $this->removedInherits === []
+            && !$this->tablespaceChanged;
+    }
+
+    public function requiresViewRebuild() : bool
+    {
+        if ($this->removedColumns !== []) {
+            return true;
+        }
+
+        foreach ($this->modifiedColumns as $colDiff) {
+            if ($colDiff->hasTypeChanged() || $colDiff->hasNameChanged()) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/TableStructureComparator.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/TableStructureComparator.php
new file mode 100644
index 0000000000..058f205119
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/TableStructureComparator.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Schema\{Column, Table};
+use Flow\PostgreSql\Schema\Constraint\PrimaryKey;
+
+final readonly class TableStructureComparator
+{
+    public function __construct(
+        private RenameStrategy $renameStrategy,
+    ) {
+    }
+
+    /**
+     * @param list<Table> $added
+     * @param list<Table> $removed
+     *
+     * @return ChangeSet<Table, mixed>
+     */
+    public function detectTableRenames(array $added, array $removed) : ChangeSet
+    {
+        $addedMap = [];
+
+        foreach ($added as $table) {
+            $addedMap[$table->name] = $table;
+        }
+
+        $removedMap = [];
+
+        foreach ($removed as $table) {
+            $removedMap[$table->name] = $table;
+        }
+
+        $candidates = [];
+
+        foreach ($addedMap as $addedName => $addedTable) {
+            foreach ($removedMap as $removedName => $removedTable) {
+                if ($this->haveEqualStructure($addedTable, $removedTable)) {
+                    $candidates[] = new RenameCandidate($addedName, $removedName);
+                }
+            }
+        }
+
+        $renamed = [];
+
+        foreach ($this->renameStrategy->resolve($candidates) as $match) {
+            $renamed[$removedMap[$match->removedName]->qualifiedName()] = $addedMap[$match->addedName];
+            unset($addedMap[$match->addedName], $removedMap[$match->removedName]);
+        }
+
+        return new ChangeSet(
+            \array_values($addedMap),
+            \array_values($removedMap),
+            renamed: $renamed !== [] ? $renamed : null,
+        );
+    }
+
+    public function haveEqualStructure(Table $a, Table $b) : bool
+    {
+        if ($a->schema !== $b->schema) {
+            return false;
+        }
+
+        if ($a->unlogged !== $b->unlogged
+            || $a->partitionStrategy !== $b->partitionStrategy
+            || $a->tablespace !== $b->tablespace) {
+            return false;
+        }
+
+        $aPartCols = $a->partitionColumns;
+        $bPartCols = $b->partitionColumns;
+        \sort($aPartCols);
+        \sort($bPartCols);
+
+        if ($aPartCols !== $bPartCols) {
+            return false;
+        }
+
+        $aInherits = $a->inherits;
+        $bInherits = $b->inherits;
+        \sort($aInherits);
+        \sort($bInherits);
+
+        if ($aInherits !== $bInherits) {
+            return false;
+        }
+
+        if (!$this->columnListsEqual($a->columns, $b->columns)) {
+            return false;
+        }
+
+        if (!$this->primaryKeysStructurallyEqual($a->primaryKey, $b->primaryKey)) {
+            return false;
+        }
+
+        return $this->listsStructurallyEqual($a->indexes, $b->indexes, static fn ($x, $y) => $x->isEqualStructure($y))
+            && $this->listsStructurallyEqual($a->foreignKeys, $b->foreignKeys, static fn ($x, $y) => $x->isEqualStructure($y))
+            && $this->listsStructurallyEqual($a->uniqueConstraints, $b->uniqueConstraints, static fn ($x, $y) => $x->isEqualStructure($y))
+            && $this->listsStructurallyEqual($a->checkConstraints, $b->checkConstraints, static fn ($x, $y) => $x->isEqualStructure($y))
+            && $this->listsStructurallyEqual($a->excludeConstraints, $b->excludeConstraints, static fn ($x, $y) => $x->isEqualStructure($y))
+            && $this->listsStructurallyEqual($a->triggers, $b->triggers, static fn ($x, $y) => $x->isEqualStructure($y));
+    }
+
+    /**
+     * @param list<Column> $a
+     * @param list<Column> $b
+     */
+    private function columnListsEqual(array $a, array $b) : bool
+    {
+        if (\count($a) !== \count($b)) {
+            return false;
+        }
+
+        $mapA = [];
+
+        foreach ($a as $col) {
+            $mapA[$col->name] = $col;
+        }
+
+        $mapB = [];
+
+        foreach ($b as $col) {
+            $mapB[$col->name] = $col;
+        }
+
+        if (\count($mapA) !== \count($mapB)) {
+            return false;
+        }
+
+        foreach ($mapA as $name => $colA) {
+            if (!array_key_exists($name, $mapB)) {
+                return false;
+            }
+
+            if (!$colA->isEqualStructure($mapB[$name])) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * @template T
+     *
+     * @param list<T> $a
+     * @param list<T> $b
+     * @param callable(T, T): bool $equalsFn
+     */
+    private function listsStructurallyEqual(array $a, array $b, callable $equalsFn) : bool
+    {
+        if (\count($a) !== \count($b)) {
+            return false;
+        }
+
+        $matched = [];
+
+        foreach ($a as $itemA) {
+            foreach ($b as $j => $itemB) {
+                if (!array_key_exists($j, $matched) && $equalsFn($itemA, $itemB)) {
+                    $matched[$j] = true;
+
+                    continue 2;
+                }
+            }
+
+            return false;
+        }
+
+        return true;
+    }
+
+    private function primaryKeysStructurallyEqual(?PrimaryKey $a, ?PrimaryKey $b) : bool
+    {
+        if ($a === null && $b === null) {
+            return true;
+        }
+
+        if ($a === null || $b === null) {
+            return false;
+        }
+
+        return $a->isEqualStructure($b);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ViewDependencyResolver.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ViewDependencyResolver.php
new file mode 100644
index 0000000000..b4071685f5
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ViewDependencyResolver.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Catalog;
+
+interface ViewDependencyResolver
+{
+    /**
+     * @param list<string> $modifiedTableQualifiedNames
+     */
+    public function resolve(Catalog $catalog, array $modifiedTableQualifiedNames) : DependentViews;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ViewDiff.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ViewDiff.php
new file mode 100644
index 0000000000..768fe10e5a
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Diff/ViewDiff.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{create, parsed_select};
+
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\View;
+
+final readonly class ViewDiff implements Diff
+{
+    public function __construct(
+        public View $source,
+        public View $target,
+    ) {
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function generate() : array
+    {
+        return [create()->view($this->target->name)->orReplace()->as(parsed_select($this->target->definition))];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Domain.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Domain.php
new file mode 100644
index 0000000000..6a09716be4
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Domain.php
@@ -0,0 +1,92 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use function Flow\PostgreSql\DSL\create;
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Parser\ExpressionParser;
+use Flow\PostgreSql\QueryBuilder\Condition\ConditionFactory;
+use Flow\PostgreSql\QueryBuilder\Expression\ExpressionFactory;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\Constraint\CheckConstraint;
+
+/**
+ * @phpstan-import-type ColumnTypeShape from ColumnType
+ * @phpstan-import-type CheckConstraintShape from CheckConstraint
+ *
+ * @phpstan-type DomainShape = array{name: string, base_type: ColumnTypeShape, nullable: bool, default: ?string, check_constraints: list<CheckConstraintShape>}
+ */
+final readonly class Domain
+{
+    /**
+     * @param list<CheckConstraint> $checkConstraints
+     */
+    public function __construct(
+        public string $name,
+        public ColumnType $baseType,
+        public bool $nullable = true,
+        public ?string $default = null,
+        public array $checkConstraints = [],
+    ) {
+    }
+
+    /**
+     * @param DomainShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            baseType: ColumnType::fromArray($data['base_type']),
+            nullable: $data['nullable'] ?? true,
+            default: $data['default'] ?? null,
+            checkConstraints: \array_map(
+                static fn (array $cc) : CheckConstraint => CheckConstraint::fromArray($cc),
+                $data['check_constraints'] ?? [],
+            ),
+        );
+    }
+
+    /**
+     * @return DomainShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'base_type' => $this->baseType->normalize(),
+            'nullable' => $this->nullable,
+            'default' => $this->default,
+            'check_constraints' => \array_map(
+                static fn (CheckConstraint $cc) : array => $cc->normalize(),
+                $this->checkConstraints,
+            ),
+        ];
+    }
+
+    public function toSql() : Sql
+    {
+        $builder = create()->domain($this->name)->as($this->baseType);
+
+        if (!$this->nullable) {
+            $builder = $builder->notNull();
+        }
+
+        if ($this->default !== null) {
+            $builder = $builder->default(ExpressionFactory::fromAst((new ExpressionParser(new Parser()))->parse($this->default)));
+        }
+
+        foreach ($this->checkConstraints as $cc) {
+            if ($cc->name !== null) {
+                $builder = $builder->constraint($cc->name);
+            }
+            $builder = $builder->check(ConditionFactory::fromAst((new ExpressionParser(new Parser()))->parse($cc->expression)));
+        }
+
+        return $builder;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Exception/ColumnNotFoundException.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Exception/ColumnNotFoundException.php
new file mode 100644
index 0000000000..59029d2099
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Exception/ColumnNotFoundException.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Exception;
+
+final class ColumnNotFoundException extends SchemaException
+{
+    public static function inTable(string $columnName, string $tableName) : self
+    {
+        return new self(\sprintf('Column "%s" not found in table "%s".', $columnName, $tableName));
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Exception/SchemaException.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Exception/SchemaException.php
new file mode 100644
index 0000000000..28bb0c2fe5
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Exception/SchemaException.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Exception;
+
+class SchemaException extends \RuntimeException
+{
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Exception/TableNotFoundException.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Exception/TableNotFoundException.php
new file mode 100644
index 0000000000..f135cd682b
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Exception/TableNotFoundException.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema\Exception;
+
+final class TableNotFoundException extends SchemaException
+{
+    public static function inSchema(string $tableName, string $schemaName) : self
+    {
+        return new self(\sprintf('Table "%s" not found in schema "%s".', $tableName, $schemaName));
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/ExecutionOrderStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ExecutionOrderStrategy.php
new file mode 100644
index 0000000000..009a77c91b
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ExecutionOrderStrategy.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+/**
+ * @template T
+ */
+interface ExecutionOrderStrategy
+{
+    /**
+     * @param list<T> $items
+     *
+     * @return list<T>
+     */
+    public function order(array $items) : array;
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Extension.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Extension.php
new file mode 100644
index 0000000000..53469f8cdc
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Extension.php
@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use function Flow\PostgreSql\DSL\create;
+
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+/**
+ * @phpstan-type ExtensionShape = array{name: string, version: ?string}
+ */
+final readonly class Extension
+{
+    public function __construct(
+        public string $name,
+        public ?string $version = null,
+    ) {
+    }
+
+    /**
+     * @param ExtensionShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            version: $data['version'] ?? null,
+        );
+    }
+
+    /**
+     * @return ExtensionShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'version' => $this->version,
+        ];
+    }
+
+    public function toSql() : Sql
+    {
+        $builder = create()->extension($this->name);
+
+        if ($this->version !== null) {
+            $builder = $builder->version($this->version);
+        }
+
+        return $builder;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/ForeignKeyDependencyOrder.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ForeignKeyDependencyOrder.php
new file mode 100644
index 0000000000..911c53f4e0
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ForeignKeyDependencyOrder.php
@@ -0,0 +1,105 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use Flow\PostgreSql\Schema\Exception\SchemaException;
+
+/**
+ * @implements ExecutionOrderStrategy<Table>
+ */
+final readonly class ForeignKeyDependencyOrder implements ExecutionOrderStrategy
+{
+    /**
+     * Orders tables so that referenced tables come before tables that reference them.
+     * Uses Kahn's algorithm for topological sorting.
+     *
+     * @param list<Table> $items
+     *
+     * @throws SchemaException when circular foreign key dependencies are detected
+     *
+     * @return list<Table>
+     */
+    public function order(array $items) : array
+    {
+        if (\count($items) <= 1) {
+            return $items;
+        }
+
+        $tablesByQualifiedName = [];
+
+        foreach ($items as $table) {
+            $tablesByQualifiedName[$table->qualifiedName()] = $table;
+        }
+
+        /** @var array<string, list<string>> $dependsOn qualified name → list of qualified names it depends on */
+        $dependsOn = [];
+        /** @var array<string, int> $inDegree */
+        $inDegree = [];
+
+        foreach ($tablesByQualifiedName as $qualifiedName => $table) {
+            $inDegree[$qualifiedName] ??= 0;
+            $dependsOn[$qualifiedName] = [];
+
+            foreach ($table->foreignKeys as $fk) {
+                $refQualified = $fk->referenceSchema . '.' . $fk->referenceTable;
+
+                if ($refQualified === $qualifiedName) {
+                    continue;
+                }
+
+                if (!array_key_exists($refQualified, $tablesByQualifiedName)) {
+                    continue;
+                }
+
+                $dependsOn[$qualifiedName][] = $refQualified;
+                $inDegree[$refQualified] ??= 0;
+                $inDegree[$qualifiedName]++;
+            }
+        }
+
+        $queue = [];
+
+        foreach ($inDegree as $name => $degree) {
+            if ($degree === 0) {
+                $queue[] = $name;
+            }
+        }
+
+        $sorted = [];
+
+        while ($queue !== []) {
+            $current = \array_shift($queue);
+            $sorted[] = $tablesByQualifiedName[$current];
+
+            foreach ($tablesByQualifiedName as $name => $table) {
+                if (\in_array($current, $dependsOn[$name], true)) {
+                    $dependsOn[$name] = \array_values(\array_filter(
+                        $dependsOn[$name],
+                        static fn (string $dep) : bool => $dep !== $current,
+                    ));
+                    $inDegree[$name]--;
+
+                    if ($inDegree[$name] === 0) {
+                        $queue[] = $name;
+                    }
+                }
+            }
+        }
+
+        if (\count($sorted) !== \count($tablesByQualifiedName)) {
+            $unsorted = \array_diff(\array_keys($tablesByQualifiedName), \array_map(
+                static fn (Table $t) : string => $t->qualifiedName(),
+                $sorted,
+            ));
+
+            throw new SchemaException(\sprintf(
+                'Circular foreign key dependency detected between tables: %s. Use deferred constraints to handle circular references.',
+                \implode(', ', $unsorted),
+            ));
+        }
+
+        return $sorted;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Func.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Func.php
new file mode 100644
index 0000000000..27ff7f8e54
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Func.php
@@ -0,0 +1,96 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use function Flow\PostgreSql\DSL\{column_type_from_string, create};
+
+use Flow\PostgreSql\QueryBuilder\Schema\Function\FunctionArgument;
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+/**
+ * @phpstan-type FuncShape = array{name: string, return_type: string, argument_types: list<string>, language: string, definition: ?string, is_strict: bool, volatility: ?string}
+ */
+final readonly class Func
+{
+    /**
+     * @param list<string> $argumentTypes
+     */
+    public function __construct(
+        public string $name,
+        public string $returnType,
+        public array $argumentTypes = [],
+        public string $language = 'sql',
+        public ?string $definition = null,
+        public bool $isStrict = false,
+        public ?FunctionVolatility $volatility = null,
+    ) {
+    }
+
+    /**
+     * @param FuncShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            returnType: $data['return_type'],
+            argumentTypes: $data['argument_types'] ?? [],
+            language: $data['language'] ?? 'sql',
+            definition: $data['definition'] ?? null,
+            isStrict: $data['is_strict'] ?? false,
+            volatility: array_key_exists('volatility', $data) && $data['volatility'] !== null ? FunctionVolatility::from($data['volatility']) : null,
+        );
+    }
+
+    /**
+     * @return FuncShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'return_type' => $this->returnType,
+            'argument_types' => $this->argumentTypes,
+            'language' => $this->language,
+            'definition' => $this->definition,
+            'is_strict' => $this->isStrict,
+            'volatility' => $this->volatility?->value,
+        ];
+    }
+
+    public function toSql() : ?Sql
+    {
+        if ($this->definition === null) {
+            return null;
+        }
+
+        $builder = create()->function($this->name)->orReplace();
+
+        if ($this->argumentTypes !== []) {
+            $args = \array_map(
+                static fn (string $type) : FunctionArgument => FunctionArgument::of(column_type_from_string($type)),
+                $this->argumentTypes,
+            );
+            $builder = $builder->arguments(...$args);
+        }
+
+        $builder = $builder->returns(column_type_from_string($this->returnType))
+            ->language($this->language);
+
+        if ($this->isStrict) {
+            $builder = $builder->strict();
+        }
+
+        if ($this->volatility !== null) {
+            $builder = match ($this->volatility) {
+                FunctionVolatility::IMMUTABLE => $builder->immutable(),
+                FunctionVolatility::STABLE => $builder->stable(),
+                FunctionVolatility::VOLATILE => $builder->volatile(),
+            };
+        }
+
+        return $builder->as($this->definition);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/FunctionVolatility.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/FunctionVolatility.php
new file mode 100644
index 0000000000..f177e994ca
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/FunctionVolatility.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+enum FunctionVolatility : string
+{
+    case IMMUTABLE = 'immutable';
+    case STABLE = 'stable';
+    case VOLATILE = 'volatile';
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/IdentityGeneration.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/IdentityGeneration.php
new file mode 100644
index 0000000000..60caf376b5
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/IdentityGeneration.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+enum IdentityGeneration : string
+{
+    case ALWAYS = 'a';
+    case BY_DEFAULT = 'd';
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Index.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Index.php
new file mode 100644
index 0000000000..3663e16424
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Index.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+/**
+ * @phpstan-type IndexShape = array{name: string, columns: non-empty-list<string>, unique: bool, method: string, primary: bool, predicate: ?string}
+ */
+final readonly class Index
+{
+    /**
+     * @param non-empty-list<string> $columns
+     */
+    public function __construct(
+        public string $name,
+        public array $columns,
+        public bool $unique = false,
+        public IndexMethod $method = IndexMethod::BTREE,
+        public bool $primary = false,
+        public ?string $predicate = null,
+    ) {
+    }
+
+    /**
+     * @param IndexShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            columns: $data['columns'],
+            unique: $data['unique'] ?? false,
+            method: array_key_exists('method', $data) ? IndexMethod::from($data['method']) : IndexMethod::BTREE,
+            primary: $data['primary'] ?? false,
+            predicate: $data['predicate'] ?? null,
+        );
+    }
+
+    public function isEqual(self $other) : bool
+    {
+        return $this->name === $other->name && $this->isEqualStructure($other);
+    }
+
+    public function isEqualStructure(self $other) : bool
+    {
+        return $this->columns === $other->columns
+            && $this->unique === $other->unique
+            && $this->method === $other->method
+            && $this->primary === $other->primary
+            && $this->predicate === $other->predicate;
+    }
+
+    /**
+     * @return IndexShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'columns' => $this->columns,
+            'unique' => $this->unique,
+            'method' => $this->method->value,
+            'primary' => $this->primary,
+            'predicate' => $this->predicate,
+        ];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/IndexMethod.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/IndexMethod.php
new file mode 100644
index 0000000000..aef2e6f028
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/IndexMethod.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+enum IndexMethod : string
+{
+    case BRIN = 'brin';
+    case BTREE = 'btree';
+    case GIN = 'gin';
+    case GIST = 'gist';
+    case HASH = 'hash';
+    case SPGIST = 'spgist';
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/ManualCatalogProvider.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ManualCatalogProvider.php
new file mode 100644
index 0000000000..2a95fbfbae
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ManualCatalogProvider.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+final readonly class ManualCatalogProvider implements CatalogProvider
+{
+    public function __construct(
+        private Catalog $catalog,
+    ) {
+    }
+
+    public function get() : Catalog
+    {
+        return $this->catalog;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/MaterializedView.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/MaterializedView.php
new file mode 100644
index 0000000000..c54f2ef2fa
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/MaterializedView.php
@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use function Flow\PostgreSql\DSL\{create, parsed_select};
+
+use Flow\PostgreSql\QueryBuilder\Schema\Index\IndexMethod as QbIndexMethod;
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+/**
+ * @phpstan-import-type IndexShape from Index
+ *
+ * @phpstan-type MaterializedViewShape = array{name: string, definition: string, indexes: list<IndexShape>}
+ */
+final readonly class MaterializedView
+{
+    /**
+     * @param list<Index> $indexes
+     */
+    public function __construct(
+        public string $name,
+        public string $definition,
+        public array $indexes = [],
+    ) {
+    }
+
+    /**
+     * @param MaterializedViewShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            definition: $data['definition'],
+            indexes: \array_map(
+                static fn (array $index) : Index => Index::fromArray($index),
+                $data['indexes'] ?? [],
+            ),
+        );
+    }
+
+    /**
+     * @return MaterializedViewShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'definition' => $this->definition,
+            'indexes' => \array_map(
+                static fn (Index $index) : array => $index->normalize(),
+                $this->indexes,
+            ),
+        ];
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function toSql() : array
+    {
+        $sqls = [];
+
+        $sqls[] = create()->materializedView($this->name)->as(parsed_select($this->definition));
+
+        foreach ($this->indexes as $idx) {
+            $builder = create()->index($idx->name);
+
+            if ($idx->unique) {
+                $builder = $builder->unique();
+            }
+
+            $onBuilder = $builder->on($this->name);
+
+            if ($idx->method !== IndexMethod::BTREE) {
+                $onBuilder = $onBuilder->using(QbIndexMethod::from($idx->method->value));
+            }
+
+            $sqls[] = $onBuilder->columns(...$idx->columns);
+        }
+
+        return $sqls;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/MaterializedViewDependencyOrder.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/MaterializedViewDependencyOrder.php
new file mode 100644
index 0000000000..4ee0daa1a2
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/MaterializedViewDependencyOrder.php
@@ -0,0 +1,121 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use Flow\PostgreSql\Extractors\Tables;
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Schema\Exception\SchemaException;
+
+/**
+ * @implements ExecutionOrderStrategy<MaterializedView>
+ */
+final readonly class MaterializedViewDependencyOrder implements ExecutionOrderStrategy
+{
+    public function __construct(private Parser $parser)
+    {
+    }
+
+    /**
+     * @param list<MaterializedView> $items
+     *
+     * @throws SchemaException when circular materialized view dependencies are detected
+     *
+     * @return list<MaterializedView>
+     */
+    public function order(array $items) : array
+    {
+        if (\count($items) <= 1) {
+            return $items;
+        }
+
+        $viewsByName = [];
+
+        foreach ($items as $view) {
+            $viewsByName[$view->name] = $view;
+        }
+
+        /** @var array<string, list<string>> $dependsOn */
+        $dependsOn = [];
+        /** @var array<string, int> $inDegree */
+        $inDegree = [];
+
+        foreach ($viewsByName as $name => $view) {
+            $inDegree[$name] ??= 0;
+            $dependsOn[$name] = [];
+
+            foreach ($this->extractReferencedNames($view->definition) as $refName) {
+                if ($refName === $name) {
+                    continue;
+                }
+
+                if (!array_key_exists($refName, $viewsByName)) {
+                    continue;
+                }
+
+                $dependsOn[$name][] = $refName;
+                $inDegree[$refName] ??= 0;
+                $inDegree[$name]++;
+            }
+        }
+
+        $queue = [];
+
+        foreach ($inDegree as $name => $degree) {
+            if ($degree === 0) {
+                $queue[] = $name;
+            }
+        }
+
+        $sorted = [];
+
+        while ($queue !== []) {
+            $current = \array_shift($queue);
+            $sorted[] = $viewsByName[$current];
+
+            foreach ($viewsByName as $name => $view) {
+                if (\in_array($current, $dependsOn[$name], true)) {
+                    $dependsOn[$name] = \array_values(\array_filter(
+                        $dependsOn[$name],
+                        static fn (string $dep) : bool => $dep !== $current,
+                    ));
+                    $inDegree[$name]--;
+
+                    if ($inDegree[$name] === 0) {
+                        $queue[] = $name;
+                    }
+                }
+            }
+        }
+
+        if (\count($sorted) !== \count($viewsByName)) {
+            $unsorted = \array_diff(\array_keys($viewsByName), \array_map(
+                static fn (MaterializedView $v) : string => $v->name,
+                $sorted,
+            ));
+
+            throw new SchemaException(\sprintf(
+                'Circular dependency detected between materialized views: %s.',
+                \implode(', ', $unsorted),
+            ));
+        }
+
+        return $sorted;
+    }
+
+    /**
+     * @return list<string>
+     */
+    private function extractReferencedNames(string $definition) : array
+    {
+        $tables = (new Tables($this->parser->parse($definition)))->all();
+        $names = [];
+
+        foreach ($tables as $table) {
+            $names[] = $table->name();
+        }
+
+        return $names;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/NoExecutionOrder.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/NoExecutionOrder.php
new file mode 100644
index 0000000000..4539b90be1
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/NoExecutionOrder.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+/**
+ * @template T
+ *
+ * @implements ExecutionOrderStrategy<T>
+ */
+final readonly class NoExecutionOrder implements ExecutionOrderStrategy
+{
+    public function order(array $items) : array
+    {
+        return $items;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/PartitionStrategy.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/PartitionStrategy.php
new file mode 100644
index 0000000000..914f03bba4
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/PartitionStrategy.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+enum PartitionStrategy : string
+{
+    case HASH = 'hash';
+    case LIST = 'list';
+    case RANGE = 'range';
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Procedure.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Procedure.php
new file mode 100644
index 0000000000..e2cf2877a7
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Procedure.php
@@ -0,0 +1,72 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use function Flow\PostgreSql\DSL\{column_type_from_string, create};
+
+use Flow\PostgreSql\QueryBuilder\Schema\Function\FunctionArgument;
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+/**
+ * @phpstan-type ProcedureShape = array{name: string, argument_types: list<string>, language: string, definition: ?string}
+ */
+final readonly class Procedure
+{
+    /**
+     * @param list<string> $argumentTypes
+     */
+    public function __construct(
+        public string $name,
+        public array $argumentTypes = [],
+        public string $language = 'sql',
+        public ?string $definition = null,
+    ) {
+    }
+
+    /**
+     * @param ProcedureShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            argumentTypes: $data['argument_types'] ?? [],
+            language: $data['language'] ?? 'sql',
+            definition: $data['definition'] ?? null,
+        );
+    }
+
+    /**
+     * @return ProcedureShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'argument_types' => $this->argumentTypes,
+            'language' => $this->language,
+            'definition' => $this->definition,
+        ];
+    }
+
+    public function toSql() : ?Sql
+    {
+        if ($this->definition === null) {
+            return null;
+        }
+
+        $builder = create()->procedure($this->name)->orReplace();
+
+        if ($this->argumentTypes !== []) {
+            $args = \array_map(
+                static fn (string $type) : FunctionArgument => FunctionArgument::of(column_type_from_string($type)),
+                $this->argumentTypes,
+            );
+            $builder = $builder->arguments(...$args);
+        }
+
+        return $builder->language($this->language)->as($this->definition);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Schema.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Schema.php
new file mode 100644
index 0000000000..96bee3f014
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Schema.php
@@ -0,0 +1,287 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\Exception\{SchemaException, TableNotFoundException};
+
+/**
+ * @phpstan-import-type TableShape from Table
+ * @phpstan-import-type SequenceShape from Sequence
+ * @phpstan-import-type ViewShape from View
+ * @phpstan-import-type MaterializedViewShape from MaterializedView
+ * @phpstan-import-type FuncShape from Func
+ * @phpstan-import-type ProcedureShape from Procedure
+ * @phpstan-import-type DomainShape from Domain
+ * @phpstan-import-type ExtensionShape from Extension
+ *
+ * @phpstan-type SchemaShape = array{name: string, tables: list<TableShape>, sequences: list<SequenceShape>, views: list<ViewShape>, materialized_views: list<MaterializedViewShape>, functions: list<FuncShape>, procedures: list<ProcedureShape>, domains: list<DomainShape>, extensions: list<ExtensionShape>}
+ */
+final readonly class Schema
+{
+    /**
+     * @param list<Table> $tables
+     * @param list<Sequence> $sequences
+     * @param list<View> $views
+     * @param list<MaterializedView> $materializedViews
+     * @param list<Func> $functions
+     * @param list<Procedure> $procedures
+     * @param list<Domain> $domains
+     * @param list<Extension> $extensions
+     */
+    public function __construct(
+        public string $name,
+        public array $tables = [],
+        public array $sequences = [],
+        public array $views = [],
+        public array $materializedViews = [],
+        public array $functions = [],
+        public array $procedures = [],
+        public array $domains = [],
+        public array $extensions = [],
+    ) {
+    }
+
+    /**
+     * @param SchemaShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            tables: \array_map(
+                static function (array $t) use ($data) : Table {
+                    if (!\array_key_exists('schema', $t)) {
+                        $t['schema'] = $data['name'];
+                    }
+
+                    return Table::fromArray($t);
+                },
+                $data['tables'] ?? [],
+            ),
+            sequences: \array_map(
+                static fn (array $s) : Sequence => Sequence::fromArray($s),
+                $data['sequences'] ?? [],
+            ),
+            views: \array_map(
+                static fn (array $v) : View => View::fromArray($v),
+                $data['views'] ?? [],
+            ),
+            materializedViews: \array_map(
+                static fn (array $mv) : MaterializedView => MaterializedView::fromArray($mv),
+                $data['materialized_views'] ?? [],
+            ),
+            functions: \array_map(
+                static fn (array $f) : Func => Func::fromArray($f),
+                $data['functions'] ?? [],
+            ),
+            procedures: \array_map(
+                static fn (array $p) : Procedure => Procedure::fromArray($p),
+                $data['procedures'] ?? [],
+            ),
+            domains: \array_map(
+                static fn (array $d) : Domain => Domain::fromArray($d),
+                $data['domains'] ?? [],
+            ),
+            extensions: \array_map(
+                static fn (array $e) : Extension => Extension::fromArray($e),
+                $data['extensions'] ?? [],
+            ),
+        );
+    }
+
+    public function hasSequence(string $name) : bool
+    {
+        foreach ($this->sequences as $sequence) {
+            if ($sequence->name === $name) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function hasTable(string $name) : bool
+    {
+        foreach ($this->tables as $table) {
+            if ($table->name === $name) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function merge(self $other) : self
+    {
+        return new self(
+            name: $this->name,
+            tables: self::mergeByName($this->tables, $other->tables),
+            sequences: self::mergeByName($this->sequences, $other->sequences),
+            views: self::mergeByName($this->views, $other->views),
+            materializedViews: self::mergeByName($this->materializedViews, $other->materializedViews),
+            functions: self::mergeByName($this->functions, $other->functions),
+            procedures: self::mergeByName($this->procedures, $other->procedures),
+            domains: self::mergeByName($this->domains, $other->domains),
+            extensions: self::mergeByName($this->extensions, $other->extensions),
+        );
+    }
+
+    /**
+     * @return SchemaShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'tables' => \array_map(
+                static fn (Table $t) : array => $t->normalize(),
+                $this->tables,
+            ),
+            'sequences' => \array_map(
+                static fn (Sequence $s) : array => $s->normalize(),
+                $this->sequences,
+            ),
+            'views' => \array_map(
+                static fn (View $v) : array => $v->normalize(),
+                $this->views,
+            ),
+            'materialized_views' => \array_map(
+                static fn (MaterializedView $mv) : array => $mv->normalize(),
+                $this->materializedViews,
+            ),
+            'functions' => \array_map(
+                static fn (Func $f) : array => $f->normalize(),
+                $this->functions,
+            ),
+            'procedures' => \array_map(
+                static fn (Procedure $p) : array => $p->normalize(),
+                $this->procedures,
+            ),
+            'domains' => \array_map(
+                static fn (Domain $d) : array => $d->normalize(),
+                $this->domains,
+            ),
+            'extensions' => \array_map(
+                static fn (Extension $e) : array => $e->normalize(),
+                $this->extensions,
+            ),
+        ];
+    }
+
+    public function sequence(string $name) : Sequence
+    {
+        foreach ($this->sequences as $sequence) {
+            if ($sequence->name === $name) {
+                return $sequence;
+            }
+        }
+
+        throw new SchemaException(\sprintf('Sequence "%s" not found in schema "%s".', $name, $this->name));
+    }
+
+    public function table(string $name) : Table
+    {
+        foreach ($this->tables as $table) {
+            if ($table->name === $name) {
+                return $table;
+            }
+        }
+
+        throw TableNotFoundException::inSchema($name, $this->name);
+    }
+
+    /**
+     * @return list<string>
+     */
+    public function tableNames() : array
+    {
+        return \array_map(
+            static fn (Table $t) : string => $t->name,
+            $this->tables,
+        );
+    }
+
+    /**
+     * @param ExecutionOrderStrategy<Table> $tableOrderStrategy
+     * @param ExecutionOrderStrategy<View> $viewOrderStrategy
+     * @param ExecutionOrderStrategy<MaterializedView> $materializedViewOrderStrategy
+     *
+     * @return list<Sql>
+     */
+    public function toSql(
+        ExecutionOrderStrategy $tableOrderStrategy = new ForeignKeyDependencyOrder(),
+        ExecutionOrderStrategy $viewOrderStrategy = new ViewDependencyOrder(new Parser()),
+        ExecutionOrderStrategy $materializedViewOrderStrategy = new MaterializedViewDependencyOrder(new Parser()),
+    ) : array {
+        $sqls = [];
+
+        foreach ($this->extensions as $ext) {
+            $sqls[] = $ext->toSql();
+        }
+
+        foreach ($this->domains as $domain) {
+            $sqls[] = $domain->toSql();
+        }
+
+        foreach ($this->sequences as $seq) {
+            $sqls[] = $seq->toSql();
+        }
+
+        foreach ($this->functions as $func) {
+            $sql = $func->toSql();
+
+            if ($sql !== null) {
+                $sqls[] = $sql;
+            }
+        }
+
+        foreach ($this->procedures as $proc) {
+            $sql = $proc->toSql();
+
+            if ($sql !== null) {
+                $sqls[] = $sql;
+            }
+        }
+
+        foreach ($tableOrderStrategy->order($this->tables) as $table) {
+            $sqls = [...$sqls, ...$table->toSql()];
+        }
+
+        foreach ($viewOrderStrategy->order($this->views) as $view) {
+            $sqls[] = $view->toSql();
+        }
+
+        foreach ($materializedViewOrderStrategy->order($this->materializedViews) as $mv) {
+            $sqls = [...$sqls, ...$mv->toSql()];
+        }
+
+        return $sqls;
+    }
+
+    /**
+     * @template T of object{name: string}
+     *
+     * @param list<T> $base
+     * @param list<T> $override
+     *
+     * @return list<T>
+     */
+    private static function mergeByName(array $base, array $override) : array
+    {
+        $indexed = [];
+
+        foreach ($base as $item) {
+            $indexed[$item->name] = $item;
+        }
+
+        foreach ($override as $item) {
+            $indexed[$item->name] = $item;
+        }
+
+        return \array_values($indexed);
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Sequence.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Sequence.php
new file mode 100644
index 0000000000..3a3b339922
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Sequence.php
@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use function Flow\PostgreSql\DSL\create;
+
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+/**
+ * @phpstan-type SequenceShape = array{name: string, data_type: string, start_value: int|string, min_value: int|string, max_value: null|int|string, increment_by: int|string, cycle: bool, cache_value: int|string, owned_by_table: ?string, owned_by_column: ?string}
+ */
+final readonly class Sequence
+{
+    public function __construct(
+        public string $name,
+        public string $dataType = 'bigint',
+        public int|string $startValue = 1,
+        public int|string $minValue = 1,
+        public int|string|null $maxValue = null,
+        public int|string $incrementBy = 1,
+        public bool $cycle = false,
+        public int|string $cacheValue = 1,
+        public ?string $ownedByTable = null,
+        public ?string $ownedByColumn = null,
+    ) {
+    }
+
+    /**
+     * @param SequenceShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            dataType: $data['data_type'] ?? 'bigint',
+            startValue: $data['start_value'] ?? 1,
+            minValue: $data['min_value'] ?? 1,
+            maxValue: $data['max_value'] ?? null,
+            incrementBy: $data['increment_by'] ?? 1,
+            cycle: $data['cycle'] ?? false,
+            cacheValue: $data['cache_value'] ?? 1,
+            ownedByTable: $data['owned_by_table'] ?? null,
+            ownedByColumn: $data['owned_by_column'] ?? null,
+        );
+    }
+
+    /**
+     * @return SequenceShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'data_type' => $this->dataType,
+            'start_value' => $this->startValue,
+            'min_value' => $this->minValue,
+            'max_value' => $this->maxValue,
+            'increment_by' => $this->incrementBy,
+            'cycle' => $this->cycle,
+            'cache_value' => $this->cacheValue,
+            'owned_by_table' => $this->ownedByTable,
+            'owned_by_column' => $this->ownedByColumn,
+        ];
+    }
+
+    public function toSql() : Sql
+    {
+        $builder = create()->sequence($this->name)
+            ->asType($this->dataType)
+            ->startWith((int) $this->startValue)
+            ->incrementBy((int) $this->incrementBy)
+            ->minValue((int) $this->minValue)
+            ->cache((int) $this->cacheValue);
+
+        if ($this->maxValue !== null) {
+            $builder = $builder->maxValue((int) $this->maxValue);
+        } else {
+            $builder = $builder->noMaxValue();
+        }
+
+        if ($this->cycle) {
+            $builder = $builder->cycle();
+        }
+
+        if ($this->ownedByTable !== null && $this->ownedByColumn !== null) {
+            $builder = $builder->ownedBy($this->ownedByTable, $this->ownedByColumn);
+        }
+
+        return $builder;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Table.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Table.php
new file mode 100644
index 0000000000..bab6726797
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Table.php
@@ -0,0 +1,339 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use function Flow\PostgreSql\DSL\{column, create};
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Parser\ExpressionParser;
+use Flow\PostgreSql\QueryBuilder\Condition\ConditionFactory;
+use Flow\PostgreSql\QueryBuilder\Expression\ExpressionFactory;
+use Flow\PostgreSql\QueryBuilder\Schema\Constraint\{CheckConstraint as CheckConstraintBuilder, ForeignKeyConstraint, PrimaryKeyConstraint, UniqueConstraint as UniqueConstraintBuilder};
+use Flow\PostgreSql\QueryBuilder\Schema\Index\IndexMethod as QbIndexMethod;
+use Flow\PostgreSql\QueryBuilder\Schema\Trigger\TriggerEvent as QbTriggerEvent;
+use Flow\PostgreSql\QueryBuilder\Sql;
+use Flow\PostgreSql\Schema\Constraint\{CheckConstraint, ExcludeConstraint, ForeignKey, PrimaryKey, UniqueConstraint};
+use Flow\PostgreSql\Schema\Exception\ColumnNotFoundException;
+
+/**
+ * @phpstan-import-type ColumnShape from Column
+ * @phpstan-import-type IndexShape from Index
+ * @phpstan-import-type TriggerShape from Trigger
+ * @phpstan-import-type PrimaryKeyShape from PrimaryKey
+ * @phpstan-import-type ForeignKeyShape from ForeignKey
+ * @phpstan-import-type UniqueConstraintShape from UniqueConstraint
+ * @phpstan-import-type CheckConstraintShape from CheckConstraint
+ * @phpstan-import-type ExcludeConstraintShape from ExcludeConstraint
+ *
+ * @phpstan-type TableShape = array{schema?: string, name: string, columns: non-empty-list<ColumnShape>, primary_key: ?PrimaryKeyShape, indexes: list<IndexShape>, foreign_keys: list<ForeignKeyShape>, unique_constraints: list<UniqueConstraintShape>, check_constraints: list<CheckConstraintShape>, exclude_constraints: list<ExcludeConstraintShape>, triggers: list<TriggerShape>, unlogged: bool, partition_strategy: ?string, partition_columns: list<string>, inherits: list<string>, tablespace: ?string}
+ */
+final readonly class Table
+{
+    /**
+     * @param non-empty-list<Column> $columns
+     * @param list<Index> $indexes
+     * @param list<ForeignKey> $foreignKeys
+     * @param list<UniqueConstraint> $uniqueConstraints
+     * @param list<CheckConstraint> $checkConstraints
+     * @param list<ExcludeConstraint> $excludeConstraints
+     * @param list<Trigger> $triggers
+     * @param list<string> $partitionColumns
+     * @param list<string> $inherits
+     */
+    public function __construct(
+        public string $schema,
+        public string $name,
+        public array $columns,
+        public ?PrimaryKey $primaryKey = null,
+        public array $indexes = [],
+        public array $foreignKeys = [],
+        public array $uniqueConstraints = [],
+        public array $checkConstraints = [],
+        public array $excludeConstraints = [],
+        public array $triggers = [],
+        public bool $unlogged = false,
+        public ?PartitionStrategy $partitionStrategy = null,
+        public array $partitionColumns = [],
+        public array $inherits = [],
+        public ?string $tablespace = null,
+    ) {
+    }
+
+    /**
+     * @param TableShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            schema: $data['schema'] ?? 'public',
+            name: $data['name'],
+            columns: \array_map(
+                static fn (array $col) : Column => Column::fromArray($col),
+                $data['columns'],
+            ),
+            primaryKey: array_key_exists('primary_key', $data) && $data['primary_key'] !== null
+                ? PrimaryKey::fromArray($data['primary_key'])
+                : null,
+            indexes: \array_map(
+                static fn (array $idx) : Index => Index::fromArray($idx),
+                $data['indexes'] ?? [],
+            ),
+            foreignKeys: \array_map(
+                static fn (array $fk) : ForeignKey => ForeignKey::fromArray($fk),
+                $data['foreign_keys'] ?? [],
+            ),
+            uniqueConstraints: \array_map(
+                static fn (array $uc) : UniqueConstraint => UniqueConstraint::fromArray($uc),
+                $data['unique_constraints'] ?? [],
+            ),
+            checkConstraints: \array_map(
+                static fn (array $cc) : CheckConstraint => CheckConstraint::fromArray($cc),
+                $data['check_constraints'] ?? [],
+            ),
+            excludeConstraints: \array_map(
+                static fn (array $ec) : ExcludeConstraint => ExcludeConstraint::fromArray($ec),
+                $data['exclude_constraints'] ?? [],
+            ),
+            triggers: \array_map(
+                static fn (array $t) : Trigger => Trigger::fromArray($t),
+                $data['triggers'] ?? [],
+            ),
+            unlogged: $data['unlogged'] ?? false,
+            partitionStrategy: array_key_exists('partition_strategy', $data) && $data['partition_strategy'] !== null ? PartitionStrategy::from($data['partition_strategy']) : null,
+            partitionColumns: $data['partition_columns'] ?? [],
+            inherits: $data['inherits'] ?? [],
+            tablespace: $data['tablespace'] ?? null,
+        );
+    }
+
+    public function column(string $name) : Column
+    {
+        foreach ($this->columns as $column) {
+            if ($column->name === $name) {
+                return $column;
+            }
+        }
+
+        throw ColumnNotFoundException::inTable($name, $this->name);
+    }
+
+    /**
+     * @return list<string>
+     */
+    public function columnNames() : array
+    {
+        return \array_map(
+            static fn (Column $c) : string => $c->name,
+            $this->columns,
+        );
+    }
+
+    public function hasColumn(string $name) : bool
+    {
+        foreach ($this->columns as $column) {
+            if ($column->name === $name) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * @return TableShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'schema' => $this->schema,
+            'name' => $this->name,
+            'columns' => \array_map(
+                static fn (Column $col) : array => $col->normalize(),
+                $this->columns,
+            ),
+            'primary_key' => $this->primaryKey?->normalize(),
+            'indexes' => \array_map(
+                static fn (Index $idx) : array => $idx->normalize(),
+                $this->indexes,
+            ),
+            'foreign_keys' => \array_map(
+                static fn (ForeignKey $fk) : array => $fk->normalize(),
+                $this->foreignKeys,
+            ),
+            'unique_constraints' => \array_map(
+                static fn (UniqueConstraint $uc) : array => $uc->normalize(),
+                $this->uniqueConstraints,
+            ),
+            'check_constraints' => \array_map(
+                static fn (CheckConstraint $cc) : array => $cc->normalize(),
+                $this->checkConstraints,
+            ),
+            'exclude_constraints' => \array_map(
+                static fn (ExcludeConstraint $ec) : array => $ec->normalize(),
+                $this->excludeConstraints,
+            ),
+            'triggers' => \array_map(
+                static fn (Trigger $t) : array => $t->normalize(),
+                $this->triggers,
+            ),
+            'unlogged' => $this->unlogged,
+            'partition_strategy' => $this->partitionStrategy?->value,
+            'partition_columns' => $this->partitionColumns,
+            'inherits' => $this->inherits,
+            'tablespace' => $this->tablespace,
+        ];
+    }
+
+    public function qualifiedName() : string
+    {
+        return $this->schema . '.' . $this->name;
+    }
+
+    /**
+     * @return list<Sql>
+     */
+    public function toSql() : array
+    {
+        $sqls = [];
+
+        $tableBuilder = create()->table($this->name, $this->schema);
+
+        foreach ($this->columns as $col) {
+            $colDef = column($col->name, $col->type);
+
+            if (!$col->nullable) {
+                $colDef = $colDef->notNull();
+            }
+
+            if ($col->default !== null) {
+                $colDef = $colDef->defaultRaw(ExpressionFactory::fromAst((new ExpressionParser(new Parser()))->parse($col->default)));
+            }
+
+            if ($col->isIdentity) {
+                $colDef = $colDef->identity($col->identityGeneration ?? IdentityGeneration::ALWAYS);
+            }
+
+            if ($col->isGenerated && $col->generationExpression !== null) {
+                $colDef = $colDef->generatedAs(ExpressionFactory::fromAst((new ExpressionParser(new Parser()))->parse($col->generationExpression)));
+            }
+
+            $tableBuilder = $tableBuilder->column($colDef);
+        }
+
+        if ($this->primaryKey !== null) {
+            $pk = PrimaryKeyConstraint::create(...$this->primaryKey->columns);
+
+            if ($this->primaryKey->name !== null) {
+                $pk = $pk->name($this->primaryKey->name);
+            }
+            $tableBuilder = $tableBuilder->constraint($pk);
+        }
+
+        foreach ($this->uniqueConstraints as $uc) {
+            $constraint = UniqueConstraintBuilder::create(...$uc->columns);
+
+            if ($uc->name !== null) {
+                $constraint = $constraint->name($uc->name);
+            }
+
+            if ($uc->nullsNotDistinct) {
+                $constraint = $constraint->nullsNotDistinct();
+            }
+            $tableBuilder = $tableBuilder->constraint($constraint);
+        }
+
+        foreach ($this->checkConstraints as $cc) {
+            $constraint = CheckConstraintBuilder::create(ConditionFactory::fromAst((new ExpressionParser(new Parser()))->parse($cc->expression)));
+
+            if ($cc->name !== null) {
+                $constraint = $constraint->name($cc->name);
+            }
+
+            if ($cc->noInherit) {
+                $constraint = $constraint->noInherit();
+            }
+            $tableBuilder = $tableBuilder->constraint($constraint);
+        }
+
+        foreach ($this->foreignKeys as $fk) {
+            $refTable = $fk->referenceSchema . '.' . $fk->referenceTable;
+            $constraint = ForeignKeyConstraint::create($fk->columns, $refTable, $fk->referenceColumns)
+                ->onUpdate($fk->onUpdate)
+                ->onDelete($fk->onDelete);
+
+            if ($fk->name !== null) {
+                $constraint = $constraint->name($fk->name);
+            }
+
+            if ($fk->deferrable) {
+                $constraint = $constraint->deferrable($fk->initiallyDeferred);
+            }
+            $tableBuilder = $tableBuilder->constraint($constraint);
+        }
+
+        if ($this->unlogged) {
+            $tableBuilder = $tableBuilder->unlogged();
+        }
+
+        if ($this->partitionStrategy !== null && $this->partitionColumns !== []) {
+            $tableBuilder = match ($this->partitionStrategy) {
+                PartitionStrategy::HASH => $tableBuilder->partitionByHash(...$this->partitionColumns),
+                PartitionStrategy::LIST => $tableBuilder->partitionByList(...$this->partitionColumns),
+                PartitionStrategy::RANGE => $tableBuilder->partitionByRange(...$this->partitionColumns),
+            };
+        }
+
+        if ($this->inherits !== []) {
+            $tableBuilder = $tableBuilder->inherits(...$this->inherits);
+        }
+
+        if ($this->tablespace !== null) {
+            $tableBuilder = $tableBuilder->tablespace($this->tablespace);
+        }
+
+        $sqls[] = $tableBuilder;
+
+        foreach ($this->indexes as $idx) {
+            $builder = create()->index($idx->name);
+
+            if ($idx->unique) {
+                $builder = $builder->unique();
+            }
+
+            $onBuilder = $builder->on($this->name, $this->schema);
+
+            if ($idx->method !== IndexMethod::BTREE) {
+                $onBuilder = $onBuilder->using(QbIndexMethod::from($idx->method->value));
+            }
+
+            $sqls[] = $onBuilder->columns(...$idx->columns);
+        }
+
+        foreach ($this->triggers as $trigger) {
+            $qbEvents = \array_map(
+                static fn (TriggerEvent $e) : QbTriggerEvent => QbTriggerEvent::{$e->name},
+                $trigger->events,
+            );
+
+            $triggerBuilder = create()->trigger($trigger->name);
+
+            $onStep = match ($trigger->timing) {
+                TriggerTiming::BEFORE => $triggerBuilder->before(...$qbEvents),
+                TriggerTiming::AFTER => $triggerBuilder->after(...$qbEvents),
+                TriggerTiming::INSTEAD_OF => $triggerBuilder->insteadOf(...$qbEvents),
+            };
+
+            $optionsStep = $onStep->on($this->name, $this->schema);
+
+            if ($trigger->forEachRow) {
+                $optionsStep = $optionsStep->forEachRow();
+            }
+
+            $sqls[] = $optionsStep->execute($trigger->functionName);
+        }
+
+        return $sqls;
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/Trigger.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Trigger.php
new file mode 100644
index 0000000000..1ac4b8781a
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/Trigger.php
@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+/**
+ * @phpstan-type TriggerShape = array{name: string, table_name: string, timing: string, events: non-empty-list<string>, function_name: string, for_each_row: bool, when_condition: ?string}
+ */
+final readonly class Trigger
+{
+    /**
+     * @param non-empty-list<TriggerEvent> $events
+     */
+    public function __construct(
+        public string $name,
+        public string $tableName,
+        public TriggerTiming $timing,
+        public array $events,
+        public string $functionName,
+        public bool $forEachRow = false,
+        public ?string $whenCondition = null,
+    ) {
+    }
+
+    /**
+     * @param TriggerShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            tableName: $data['table_name'],
+            timing: TriggerTiming::from($data['timing']),
+            events: \array_map(
+                static fn (string $event) : TriggerEvent => TriggerEvent::from($event),
+                $data['events'],
+            ),
+            functionName: $data['function_name'],
+            forEachRow: $data['for_each_row'] ?? false,
+            whenCondition: $data['when_condition'] ?? null,
+        );
+    }
+
+    public function isEqual(self $other) : bool
+    {
+        return $this->name === $other->name
+            && $this->tableName === $other->tableName
+            && $this->isEqualStructure($other);
+    }
+
+    public function isEqualStructure(self $other) : bool
+    {
+        return $this->timing === $other->timing
+            && $this->events === $other->events
+            && $this->functionName === $other->functionName
+            && $this->forEachRow === $other->forEachRow
+            && $this->whenCondition === $other->whenCondition;
+    }
+
+    /**
+     * @return TriggerShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'table_name' => $this->tableName,
+            'timing' => $this->timing->value,
+            'events' => \array_map(
+                static fn (TriggerEvent $event) : string => $event->value,
+                $this->events,
+            ),
+            'function_name' => $this->functionName,
+            'for_each_row' => $this->forEachRow,
+            'when_condition' => $this->whenCondition,
+        ];
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/TriggerEvent.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/TriggerEvent.php
new file mode 100644
index 0000000000..14ec90c2de
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/TriggerEvent.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+enum TriggerEvent : string
+{
+    case DELETE = 'DELETE';
+    case INSERT = 'INSERT';
+    case TRUNCATE = 'TRUNCATE';
+    case UPDATE = 'UPDATE';
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/TriggerTiming.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/TriggerTiming.php
new file mode 100644
index 0000000000..6a5317c273
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/TriggerTiming.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+enum TriggerTiming : string
+{
+    case AFTER = 'AFTER';
+    case BEFORE = 'BEFORE';
+    case INSTEAD_OF = 'INSTEAD OF';
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/View.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/View.php
new file mode 100644
index 0000000000..3ba0c01da3
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/View.php
@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use function Flow\PostgreSql\DSL\{create, parsed_select};
+
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+/**
+ * @phpstan-type ViewShape = array{name: string, definition: string, is_updatable: bool}
+ */
+final readonly class View
+{
+    public function __construct(
+        public string $name,
+        public string $definition,
+        public bool $isUpdatable = false,
+    ) {
+    }
+
+    /**
+     * @param ViewShape $data
+     */
+    public static function fromArray(array $data) : self
+    {
+        return new self(
+            name: $data['name'],
+            definition: $data['definition'],
+            isUpdatable: $data['is_updatable'] ?? false,
+        );
+    }
+
+    /**
+     * @return ViewShape
+     */
+    public function normalize() : array
+    {
+        return [
+            'name' => $this->name,
+            'definition' => $this->definition,
+            'is_updatable' => $this->isUpdatable,
+        ];
+    }
+
+    public function toSql() : Sql
+    {
+        return create()->view($this->name)->as(parsed_select($this->definition));
+    }
+}
diff --git a/src/lib/postgresql/src/Flow/PostgreSql/Schema/ViewDependencyOrder.php b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ViewDependencyOrder.php
new file mode 100644
index 0000000000..a360ca8e49
--- /dev/null
+++ b/src/lib/postgresql/src/Flow/PostgreSql/Schema/ViewDependencyOrder.php
@@ -0,0 +1,121 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Schema;
+
+use Flow\PostgreSql\Extractors\Tables;
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Schema\Exception\SchemaException;
+
+/**
+ * @implements ExecutionOrderStrategy<View>
+ */
+final readonly class ViewDependencyOrder implements ExecutionOrderStrategy
+{
+    public function __construct(private Parser $parser)
+    {
+    }
+
+    /**
+     * @param list<View> $items
+     *
+     * @throws SchemaException when circular view dependencies are detected
+     *
+     * @return list<View>
+     */
+    public function order(array $items) : array
+    {
+        if (\count($items) <= 1) {
+            return $items;
+        }
+
+        $viewsByName = [];
+
+        foreach ($items as $view) {
+            $viewsByName[$view->name] = $view;
+        }
+
+        /** @var array<string, list<string>> $dependsOn */
+        $dependsOn = [];
+        /** @var array<string, int> $inDegree */
+        $inDegree = [];
+
+        foreach ($viewsByName as $name => $view) {
+            $inDegree[$name] ??= 0;
+            $dependsOn[$name] = [];
+
+            foreach ($this->extractReferencedNames($view->definition) as $refName) {
+                if ($refName === $name) {
+                    continue;
+                }
+
+                if (!array_key_exists($refName, $viewsByName)) {
+                    continue;
+                }
+
+                $dependsOn[$name][] = $refName;
+                $inDegree[$refName] ??= 0;
+                $inDegree[$name]++;
+            }
+        }
+
+        $queue = [];
+
+        foreach ($inDegree as $name => $degree) {
+            if ($degree === 0) {
+                $queue[] = $name;
+            }
+        }
+
+        $sorted = [];
+
+        while ($queue !== []) {
+            $current = \array_shift($queue);
+            $sorted[] = $viewsByName[$current];
+
+            foreach ($viewsByName as $name => $view) {
+                if (\in_array($current, $dependsOn[$name], true)) {
+                    $dependsOn[$name] = \array_values(\array_filter(
+                        $dependsOn[$name],
+                        static fn (string $dep) : bool => $dep !== $current,
+                    ));
+                    $inDegree[$name]--;
+
+                    if ($inDegree[$name] === 0) {
+                        $queue[] = $name;
+                    }
+                }
+            }
+        }
+
+        if (\count($sorted) !== \count($viewsByName)) {
+            $unsorted = \array_diff(\array_keys($viewsByName), \array_map(
+                static fn (View $v) : string => $v->name,
+                $sorted,
+            ));
+
+            throw new SchemaException(\sprintf(
+                'Circular view dependency detected between views: %s.',
+                \implode(', ', $unsorted),
+            ));
+        }
+
+        return $sorted;
+    }
+
+    /**
+     * @return list<string>
+     */
+    private function extractReferencedNames(string $definition) : array
+    {
+        $tables = (new Tables($this->parser->parse($definition)))->all();
+        $names = [];
+
+        foreach ($tables as $table) {
+            $names[] = $table->name();
+        }
+
+        return $names;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FailingMigration.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FailingMigration.php
new file mode 100644
index 0000000000..0f6013a7be
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FailingMigration.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext};
+
+final class FailingMigration implements Migration
+{
+    public function migrate(MigrationContext $context) : void
+    {
+        throw new \RuntimeException('Migration failed');
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FakeCatalogProvider.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FakeCatalogProvider.php
new file mode 100644
index 0000000000..dc2269e547
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FakeCatalogProvider.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Schema\{Catalog, CatalogProvider};
+
+final class FakeCatalogProvider implements CatalogProvider
+{
+    public function __construct(
+        public Catalog $catalog,
+    ) {
+    }
+
+    public function get() : Catalog
+    {
+        return $this->catalog;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FakeMigrationRepository.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FakeMigrationRepository.php
new file mode 100644
index 0000000000..899b3b3515
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FakeMigrationRepository.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\Repository\{AvailableMigration, AvailableMigrations, MigrationRepository};
+use Flow\PostgreSql\Migrations\Version;
+
+final class FakeMigrationRepository implements MigrationRepository
+{
+    private AvailableMigrations $migrations;
+
+    public function __construct(AvailableMigration ...$migrations)
+    {
+        $this->migrations = new AvailableMigrations(...$migrations);
+    }
+
+    public function all() : AvailableMigrations
+    {
+        return $this->migrations;
+    }
+
+    public function get(Version $version) : AvailableMigration
+    {
+        return $this->migrations->get($version);
+    }
+
+    public function has(Version $version) : bool
+    {
+        return $this->migrations->has($version);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FakeMigrationStore.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FakeMigrationStore.php
new file mode 100644
index 0000000000..04bd90b275
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FakeMigrationStore.php
@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\{ExecutedMigration, Version};
+use Flow\PostgreSql\Migrations\Store\{ExecutedMigrations, MigrationStore};
+
+final class FakeMigrationStore implements MigrationStore
+{
+    private bool $initialized = false;
+
+    /**
+     * @var array<string, ExecutedMigration>
+     */
+    private array $migrations = [];
+
+    public function complete(Version $version, int $executionTimeMs) : void
+    {
+        $this->migrations[(string) $version] = new ExecutedMigration(
+            $version,
+            new \DateTimeImmutable(),
+            $executionTimeMs,
+        );
+    }
+
+    public function executedMigrations() : ExecutedMigrations
+    {
+        return new ExecutedMigrations(...\array_values($this->migrations));
+    }
+
+    public function initialize() : void
+    {
+        $this->initialized = true;
+    }
+
+    public function isInitialized() : bool
+    {
+        return $this->initialized;
+    }
+
+    public function remove(Version $version) : void
+    {
+        unset($this->migrations[(string) $version]);
+    }
+
+    public function reset() : void
+    {
+        $this->migrations = [];
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FixedVersionGenerator.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FixedVersionGenerator.php
new file mode 100644
index 0000000000..21948415e2
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/FixedVersionGenerator.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\{Version, VersionGenerator};
+
+final class FixedVersionGenerator implements VersionGenerator
+{
+    public function __construct(
+        public Version $version,
+    ) {
+    }
+
+    public function generate() : Version
+    {
+        return $this->version;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/NonTransactionalMigration.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/NonTransactionalMigration.php
new file mode 100644
index 0000000000..c043b40b4a
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/NonTransactionalMigration.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext};
+
+final class NonTransactionalMigration implements Migration
+{
+    public bool $migrateCalled = false;
+
+    public function migrate(MigrationContext $context) : void
+    {
+        $this->migrateCalled = true;
+    }
+
+    public function transactional() : bool
+    {
+        return false;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/NonTransactionalRollback.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/NonTransactionalRollback.php
new file mode 100644
index 0000000000..c59592aa4e
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/NonTransactionalRollback.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\{MigrationContext, Rollback};
+
+final class NonTransactionalRollback implements Rollback
+{
+    public bool $rollbackCalled = false;
+
+    public function rollback(MigrationContext $context) : void
+    {
+        $this->rollbackCalled = true;
+    }
+
+    public function transactional() : bool
+    {
+        return false;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyClient.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyClient.php
new file mode 100644
index 0000000000..4a453a02ff
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyClient.php
@@ -0,0 +1,167 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\AST\Transformers\ExplainConfig;
+use Flow\PostgreSql\Client\{Client, ConnectionParameters, Cursor, RowMapper};
+use Flow\PostgreSql\Client\Types\ValueConverters;
+use Flow\PostgreSql\Explain\Plan\Plan;
+use Flow\PostgreSql\QueryBuilder\Sql;
+
+final class SpyClient implements Client
+{
+    /**
+     * @var list<array{sql: string, parameters: array<int, mixed>}>
+     */
+    public array $executedQueries = [];
+
+    public int $transactionCallCount = 0;
+
+    public int $transactionLevel = 0;
+
+    public function beginTransaction() : void
+    {
+        $this->transactionLevel++;
+    }
+
+    public function close() : void
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function commit() : void
+    {
+        $this->transactionLevel--;
+    }
+
+    public function converters() : ValueConverters
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function cursor(Sql|string $sql, array $parameters = []) : Cursor
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function execute(Sql|string $sql, array $parameters = []) : int
+    {
+        $this->executedQueries[] = ['sql' => $sql instanceof Sql ? $sql->toSql() : $sql, 'parameters' => $parameters];
+
+        return 0;
+    }
+
+    public function explain(Sql|string $sql, array $parameters = [], ?ExplainConfig $config = null) : Plan
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetch(Sql|string $sql, array $parameters = []) : ?array
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchAll(Sql|string $sql, array $parameters = []) : array
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchAllInto(RowMapper $mapper, Sql|string $sql, array $parameters = []) : array
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchInto(RowMapper $mapper, Sql|string $sql, array $parameters = []) : mixed
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchOne(Sql|string $sql, array $parameters = []) : array
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchOneInto(RowMapper $mapper, Sql|string $sql, array $parameters = []) : mixed
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchScalar(Sql|string $sql, array $parameters = []) : mixed
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchScalarBool(Sql|string $sql, array $parameters = []) : bool
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchScalarFloat(Sql|string $sql, array $parameters = []) : float
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchScalarInt(Sql|string $sql, array $parameters = []) : int
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function fetchScalarString(Sql|string $sql, array $parameters = []) : string
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function getTransactionNestingLevel() : int
+    {
+        return $this->transactionLevel;
+    }
+
+    public function isAutoCommit() : bool
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function isConnected() : bool
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function lastInsertId(string $sequenceName) : int|string
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function parameters() : ConnectionParameters
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function rollBack() : void
+    {
+        $this->transactionLevel--;
+    }
+
+    public function setAutoCommit(bool $autoCommit) : void
+    {
+        throw new \RuntimeException('Not implemented');
+    }
+
+    public function transaction(callable $callback) : mixed
+    {
+        $this->transactionCallCount++;
+        $this->beginTransaction();
+
+        try {
+            $result = $callback($this);
+            $this->commit();
+
+            return $result;
+        } catch (\Throwable $e) {
+            $this->rollBack();
+
+            throw $e;
+        }
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyMigration.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyMigration.php
new file mode 100644
index 0000000000..9739dcc178
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyMigration.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext};
+
+final class SpyMigration implements Migration
+{
+    public bool $migrateCalled = false;
+
+    public function migrate(MigrationContext $context) : void
+    {
+        $this->migrateCalled = true;
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyMigrationExecutor.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyMigrationExecutor.php
new file mode 100644
index 0000000000..6ae4feec9e
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyMigrationExecutor.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\Executor\{ExecutionResult, MigrationExecutor};
+use Flow\PostgreSql\Migrations\{MigrationContext, MigrationPlan};
+
+final class SpyMigrationExecutor implements MigrationExecutor
+{
+    /**
+     * @var list<MigrationPlan>
+     */
+    public array $executedPlans = [];
+
+    public function execute(MigrationPlan $plan, MigrationContext $context) : ExecutionResult
+    {
+        $this->executedPlans[] = $plan;
+
+        return new ExecutionResult($plan->version, $plan->direction, 0, false, null);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyMigrationGenerator.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyMigrationGenerator.php
new file mode 100644
index 0000000000..96be79b638
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyMigrationGenerator.php
@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\Generator\MigrationGenerator;
+use Flow\PostgreSql\Migrations\Version;
+
+final class SpyMigrationGenerator implements MigrationGenerator
+{
+    public ?string $lastDataName = null;
+
+    /**
+     * @var ?list<string>
+     */
+    public ?array $lastDownSql = null;
+
+    public ?string $lastSchemaName = null;
+
+    /**
+     * @var ?list<string>
+     */
+    public ?array $lastUpSql = null;
+
+    public function __construct(
+        public Version $returnVersion,
+    ) {
+    }
+
+    public function generateDataMigration(?string $name = null) : Version
+    {
+        $this->lastDataName = $name;
+
+        return $this->returnVersion;
+    }
+
+    public function generateSchemaMigration(?string $name, array $upSql, ?array $downSql = null) : Version
+    {
+        $this->lastSchemaName = $name;
+        $this->lastUpSql = $upSql;
+        $this->lastDownSql = $downSql;
+
+        return $this->returnVersion;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyRollback.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyRollback.php
new file mode 100644
index 0000000000..09e4de22e3
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/SpyRollback.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+use Flow\PostgreSql\Migrations\{MigrationContext, Rollback};
+
+final class SpyRollback implements Rollback
+{
+    public bool $rollbackCalled = false;
+
+    public function rollback(MigrationContext $context) : void
+    {
+        $this->rollbackCalled = true;
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/TemporaryDirectory.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/TemporaryDirectory.php
new file mode 100644
index 0000000000..af42fba616
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Double/TemporaryDirectory.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Double;
+
+final class TemporaryDirectory
+{
+    public readonly string $path;
+
+    public function __construct()
+    {
+        $this->path = \sys_get_temp_dir() . '/flow_migrations_test_' . \uniqid();
+        \mkdir($this->path, 0755, true);
+    }
+
+    public function cleanUp() : void
+    {
+        if (!\is_dir($this->path)) {
+            return;
+        }
+
+        $iterator = new \RecursiveIteratorIterator(
+            new \RecursiveDirectoryIterator($this->path, \RecursiveDirectoryIterator::SKIP_DOTS),
+            \RecursiveIteratorIterator::CHILD_FIRST,
+        );
+
+        /** @var \SplFileInfo $file */
+        foreach ($iterator as $file) {
+            if ($file->isDir()) {
+                \rmdir($file->getPathname());
+            } else {
+                \unlink($file->getPathname());
+            }
+        }
+
+        \rmdir($this->path);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260401120000_create_users/migration.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260401120000_create_users/migration.php
new file mode 100644
index 0000000000..c3b783e29b
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260401120000_create_users/migration.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext};
+
+return new class implements Migration {
+    public function migrate(MigrationContext $context) : void
+    {
+        $context->client->execute('CREATE TABLE users (id SERIAL PRIMARY KEY, name VARCHAR(255) NOT NULL)');
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260401120000_create_users/rollback.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260401120000_create_users/rollback.php
new file mode 100644
index 0000000000..91742b3bf1
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260401120000_create_users/rollback.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{MigrationContext, Rollback};
+
+return new class implements Rollback {
+    public function rollback(MigrationContext $context) : void
+    {
+        $context->client->execute('DROP TABLE users');
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260402100000_seed_data/migration.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260402100000_seed_data/migration.php
new file mode 100644
index 0000000000..6f4d905717
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260402100000_seed_data/migration.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext};
+
+return new class implements Migration {
+    public function migrate(MigrationContext $context) : void
+    {
+        $context->client->execute("INSERT INTO users (name) VALUES ('seed')");
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260402100000_seed_data/rollback.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260402100000_seed_data/rollback.php
new file mode 100644
index 0000000000..2973a2e909
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260402100000_seed_data/rollback.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{MigrationContext, Rollback};
+
+return new class implements Rollback {
+    public function rollback(MigrationContext $context) : void
+    {
+        $context->client->execute("DELETE FROM users WHERE name = 'seed'");
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260403090000_add_column/migration.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260403090000_add_column/migration.php
new file mode 100644
index 0000000000..e450697b6b
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Fixture/migrations/20260403090000_add_column/migration.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext};
+
+return new class implements Migration {
+    public function migrate(MigrationContext $context) : void
+    {
+        $context->client->execute('ALTER TABLE users ADD COLUMN email VARCHAR(255)');
+    }
+
+    public function transactional() : bool
+    {
+        return true;
+    }
+};
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration/MigratorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration/MigratorTest.php
new file mode 100644
index 0000000000..f4338afcc4
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration/MigratorTest.php
@@ -0,0 +1,209 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Integration;
+
+use Flow\PostgreSql\Migrations\{Configuration, Direction, Migrator, Version};
+use Flow\PostgreSql\Migrations\Executor\DefaultMigrationExecutor;
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Store\PostgreSqlMigrationStore;
+use Flow\PostgreSql\Migrations\Tests\Double\{FailingMigration, FakeCatalogProvider, FakeMigrationRepository, SpyMigration};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+
+final class MigratorTest extends TestCase
+{
+    protected Configuration $configuration;
+
+    protected PostgreSqlMigrationsContext $context;
+
+    protected PostgreSqlMigrationStore $store;
+
+    protected function setUp() : void
+    {
+        $this->context = new PostgreSqlMigrationsContext();
+        $this->configuration = new Configuration(
+            client: $this->context->client,
+            targetCatalogProvider: new FakeCatalogProvider(new Catalog([])),
+            migrationsDirectory: __DIR__ . '/../Fixture/migrations',
+            migrationsNamespace: 'Flow\\PostgreSql\\Migrations\\Tests\\Fixture',
+            tableName: 'flow_migrations_test',
+            tableSchema: 'public',
+        );
+        $this->store = new PostgreSqlMigrationStore($this->context->client, $this->configuration);
+
+        $this->context->dropTableIfExists('public.flow_migrations_test');
+        $this->context->dropTableIfExists('public.users');
+    }
+
+    protected function tearDown() : void
+    {
+        $this->context->dropTableIfExists('public.flow_migrations_test');
+        $this->context->dropTableIfExists('public.users');
+        $this->context->close();
+    }
+
+    public function test_all_or_nothing_rolls_back_on_failure() : void
+    {
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260501120000'), 'good', new SpyMigration(), null),
+            new AvailableMigration(Version::fromString('20260502120000'), 'bad', new FailingMigration(), null),
+        );
+
+        $migrator = new Migrator(
+            $repository,
+            $this->store,
+            new DefaultMigrationExecutor(),
+            $this->context->client,
+            $this->configuration,
+        );
+
+        try {
+            $migrator->migrate(allOrNothing: true);
+        } catch (\Throwable) {
+        }
+
+        self::assertCount(0, $this->store->executedMigrations());
+    }
+
+    public function test_dry_run_does_not_persist() : void
+    {
+        $migrator = new Migrator(
+            $this->fixtureRepository(),
+            $this->store,
+            new DefaultMigrationExecutor(),
+            $this->context->client,
+            $this->configuration,
+        );
+
+        $results = $migrator->migrate(
+            Version::fromString('20260401120000'),
+            dryRun: true,
+        );
+
+        self::assertCount(1, $results);
+        self::assertTrue($results[0]->isSuccessful());
+        self::assertCount(0, $this->store->executedMigrations());
+    }
+
+    public function test_execute_version_runs_single_migration() : void
+    {
+        $migrator = new Migrator(
+            $this->fixtureRepository(),
+            $this->store,
+            new DefaultMigrationExecutor(),
+            $this->context->client,
+            $this->configuration,
+        );
+
+        $result = $migrator->executeVersion(Version::fromString('20260401120000'), Direction::UP);
+
+        self::assertTrue($result->isSuccessful());
+        self::assertCount(1, $this->store->executedMigrations());
+    }
+
+    public function test_migrate_down_to_specific_version() : void
+    {
+        $migrator = new Migrator(
+            $this->fixtureRepository(),
+            $this->store,
+            new DefaultMigrationExecutor(),
+            $this->context->client,
+            $this->configuration,
+        );
+
+        $migrator->migrate(Version::fromString('20260402100000'));
+
+        self::assertCount(2, $this->store->executedMigrations());
+
+        $results = $migrator->migrate(Version::fromString('20260401120000'));
+
+        self::assertCount(1, $results);
+        self::assertSame(Direction::DOWN, $results[0]->direction);
+        self::assertCount(1, $this->store->executedMigrations());
+    }
+
+    public function test_migrate_up_from_empty_state() : void
+    {
+        $migrator = new Migrator(
+            $this->fixtureRepository(),
+            $this->store,
+            new DefaultMigrationExecutor(),
+            $this->context->client,
+            $this->configuration,
+        );
+
+        $results = $migrator->migrate();
+
+        self::assertCount(3, $results);
+
+        foreach ($results as $result) {
+            self::assertTrue($result->isSuccessful());
+            self::assertSame(Direction::UP, $result->direction);
+        }
+
+        self::assertCount(3, $this->store->executedMigrations());
+    }
+
+    public function test_migrate_up_to_specific_version() : void
+    {
+        $migrator = new Migrator(
+            $this->fixtureRepository(),
+            $this->store,
+            new DefaultMigrationExecutor(),
+            $this->context->client,
+            $this->configuration,
+        );
+
+        $results = $migrator->migrate(Version::fromString('20260402100000'));
+
+        self::assertCount(2, $results);
+        self::assertCount(2, $this->store->executedMigrations());
+    }
+
+    public function test_status_returns_correct_states() : void
+    {
+        $migrator = new Migrator(
+            $this->fixtureRepository(),
+            $this->store,
+            new DefaultMigrationExecutor(),
+            $this->context->client,
+            $this->configuration,
+        );
+
+        $migrator->migrate(Version::fromString('20260401120000'));
+
+        $status = $migrator->status();
+
+        self::assertCount(3, $status);
+        self::assertCount(1, $status->executed());
+        self::assertCount(2, $status->pending());
+    }
+
+    private function fixtureRepository() : FakeMigrationRepository
+    {
+        $fixturesPath = __DIR__ . '/../Fixture/migrations';
+
+        return new FakeMigrationRepository(
+            new AvailableMigration(
+                Version::fromString('20260401120000'),
+                'create_users',
+                require $fixturesPath . '/20260401120000_create_users/migration.php',
+                require $fixturesPath . '/20260401120000_create_users/rollback.php',
+            ),
+            new AvailableMigration(
+                Version::fromString('20260402100000'),
+                'seed_data',
+                require $fixturesPath . '/20260402100000_seed_data/migration.php',
+                require $fixturesPath . '/20260402100000_seed_data/rollback.php',
+            ),
+            new AvailableMigration(
+                Version::fromString('20260403090000'),
+                'add_column',
+                require $fixturesPath . '/20260403090000_add_column/migration.php',
+                null,
+            ),
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration/PostgreSqlMigrationsContext.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration/PostgreSqlMigrationsContext.php
new file mode 100644
index 0000000000..b1fb13ff92
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration/PostgreSqlMigrationsContext.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Integration;
+
+use function Flow\PostgreSql\DSL\{drop, pgsql_client, pgsql_connection_dsn};
+
+use Flow\PostgreSql\Client\Client;
+
+final class PostgreSqlMigrationsContext
+{
+    public readonly Client $client;
+
+    public function __construct()
+    {
+        $dsn = \getenv('PGSQL_DATABASE_URL');
+
+        if (!$dsn) {
+            throw new \RuntimeException('PGSQL_DATABASE_URL environment variable is not set');
+        }
+
+        $this->client = pgsql_client(pgsql_connection_dsn($dsn));
+    }
+
+    public function close() : void
+    {
+        $this->client->close();
+    }
+
+    public function dropTableIfExists(string $table) : void
+    {
+        $this->client->execute(drop()->table($table)->ifExists()->cascade()->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration/Store/PostgreSqlMigrationStoreTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration/Store/PostgreSqlMigrationStoreTest.php
new file mode 100644
index 0000000000..83d97cd66f
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Integration/Store/PostgreSqlMigrationStoreTest.php
@@ -0,0 +1,126 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Integration\Store;
+
+use Flow\PostgreSql\Migrations\{Configuration, Version};
+use Flow\PostgreSql\Migrations\Store\PostgreSqlMigrationStore;
+use Flow\PostgreSql\Migrations\Tests\Double\FakeCatalogProvider;
+use Flow\PostgreSql\Migrations\Tests\Integration\PostgreSqlMigrationsContext;
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+
+final class PostgreSqlMigrationStoreTest extends TestCase
+{
+    protected Configuration $configuration;
+
+    protected PostgreSqlMigrationsContext $context;
+
+    protected PostgreSqlMigrationStore $store;
+
+    protected function setUp() : void
+    {
+        $this->context = new PostgreSqlMigrationsContext();
+        $this->configuration = new Configuration(
+            client: $this->context->client,
+            targetCatalogProvider: new FakeCatalogProvider(new Catalog([])),
+            migrationsDirectory: __DIR__,
+            migrationsNamespace: 'Flow\\PostgreSql\\Migrations\\Tests\\Integration\\Store',
+            tableName: 'flow_migrations_test',
+            tableSchema: 'public',
+        );
+        $this->store = new PostgreSqlMigrationStore($this->context->client, $this->configuration);
+
+        $this->context->dropTableIfExists('public.flow_migrations_test');
+    }
+
+    protected function tearDown() : void
+    {
+        $this->context->dropTableIfExists('public.flow_migrations_test');
+        $this->context->close();
+    }
+
+    public function test_complete_inserts_record() : void
+    {
+        $this->store->initialize();
+
+        $version = Version::fromString('20260403120000');
+        $this->store->complete($version, 150);
+
+        $executed = $this->store->executedMigrations();
+
+        self::assertCount(1, $executed);
+        self::assertTrue($executed->has($version));
+        self::assertSame(150, $executed->get($version)->executionTimeMs);
+    }
+
+    public function test_executed_migrations_returns_sorted_results() : void
+    {
+        $this->store->initialize();
+
+        $this->store->complete(Version::fromString('20260403140000'), 300);
+        $this->store->complete(Version::fromString('20260403120000'), 100);
+        $this->store->complete(Version::fromString('20260403130000'), 200);
+
+        $executed = $this->store->executedMigrations();
+
+        $versions = [];
+
+        foreach ($executed as $migration) {
+            $versions[] = (string) $migration->version;
+        }
+
+        self::assertSame(['20260403120000', '20260403130000', '20260403140000'], $versions);
+    }
+
+    public function test_initialize_creates_table() : void
+    {
+        $this->store->initialize();
+
+        self::assertTrue($this->store->isInitialized());
+    }
+
+    public function test_is_initialized_returns_false_before_init() : void
+    {
+        self::assertFalse($this->store->isInitialized());
+    }
+
+    public function test_is_initialized_returns_true_after_init() : void
+    {
+        self::assertFalse($this->store->isInitialized());
+
+        $this->store->initialize();
+
+        self::assertTrue($this->store->isInitialized());
+    }
+
+    public function test_remove_deletes_record() : void
+    {
+        $this->store->initialize();
+
+        $version = Version::fromString('20260403120000');
+        $this->store->complete($version, 150);
+
+        self::assertCount(1, $this->store->executedMigrations());
+
+        $this->store->remove($version);
+
+        self::assertCount(0, $this->store->executedMigrations());
+    }
+
+    public function test_reset_clears_all_records() : void
+    {
+        $this->store->initialize();
+
+        $this->store->complete(Version::fromString('20260403120000'), 100);
+        $this->store->complete(Version::fromString('20260403130000'), 200);
+
+        self::assertCount(2, $this->store->executedMigrations());
+
+        $this->store->reset();
+
+        self::assertCount(0, $this->store->executedMigrations());
+        self::assertTrue($this->store->executedMigrations()->isEmpty());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/ConfigurationTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/ConfigurationTest.php
new file mode 100644
index 0000000000..451086b18e
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/ConfigurationTest.php
@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit;
+
+use Flow\PostgreSql\Migrations\Configuration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, SpyClient};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+
+final class ConfigurationTest extends TestCase
+{
+    public function test_custom_values() : void
+    {
+        $client = new SpyClient();
+        $catalog = new FakeCatalogProvider(new Catalog([]));
+
+        $config = new Configuration(
+            client: $client,
+            targetCatalogProvider: $catalog,
+            migrationsDirectory: '/app/migrations',
+            migrationsNamespace: 'App\\Migrations',
+            tableName: 'custom_migrations',
+            tableSchema: 'app',
+            allOrNothing: false,
+            generateRollback: false,
+        );
+
+        self::assertSame($client, $config->client);
+        self::assertSame($catalog, $config->targetCatalogProvider);
+        self::assertSame('/app/migrations', $config->migrationsDirectory);
+        self::assertSame('App\\Migrations', $config->migrationsNamespace);
+        self::assertSame('custom_migrations', $config->tableName);
+        self::assertSame('app', $config->tableSchema);
+        self::assertFalse($config->allOrNothing);
+        self::assertFalse($config->generateRollback);
+    }
+
+    public function test_default_values() : void
+    {
+        $config = new Configuration(
+            client: new SpyClient(),
+            targetCatalogProvider: new FakeCatalogProvider(new Catalog([])),
+            migrationsDirectory: '/app/migrations',
+            migrationsNamespace: 'App\\Migrations',
+        );
+
+        self::assertSame('flow_migrations', $config->tableName);
+        self::assertSame('public', $config->tableSchema);
+        self::assertFalse($config->allOrNothing);
+        self::assertTrue($config->generateRollback);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Exception/MigrationExceptionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Exception/MigrationExceptionTest.php
new file mode 100644
index 0000000000..976ef807be
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Exception/MigrationExceptionTest.php
@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit\Exception;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Version;
+use PHPUnit\Framework\TestCase;
+
+final class MigrationExceptionTest extends TestCase
+{
+    public function test_configuration_file_not_found() : void
+    {
+        $exception = MigrationException::configurationFileNotFound('migrations.php');
+
+        self::assertStringContainsString('migrations.php', $exception->getMessage());
+        self::assertStringContainsString('not found', $exception->getMessage());
+    }
+
+    public function test_invalid_configuration_file() : void
+    {
+        $exception = MigrationException::invalidConfigurationFile('/path/to/config.php');
+
+        self::assertStringContainsString('/path/to/config.php', $exception->getMessage());
+        self::assertStringContainsString('Configuration', $exception->getMessage());
+    }
+
+    public function test_invalid_data_migration() : void
+    {
+        $exception = MigrationException::invalidDataMigration('/path/to/file.php');
+
+        self::assertSame('Data migration file "/path/to/file.php" must return an instance of Migration.', $exception->getMessage());
+    }
+
+    public function test_invalid_rollback() : void
+    {
+        $exception = MigrationException::invalidRollback('/path/to/file.php');
+
+        self::assertSame('Rollback file "/path/to/file.php" must return an instance of Rollback.', $exception->getMessage());
+    }
+
+    public function test_invalid_version_format() : void
+    {
+        $exception = MigrationException::invalidVersionFormat('abc');
+
+        self::assertSame('Invalid migration version format: "abc". Expected non-empty alphanumeric string (max 255 chars).', $exception->getMessage());
+    }
+
+    public function test_irreversible_migration() : void
+    {
+        $exception = MigrationException::irreversibleMigration(Version::fromString('20260403120000'));
+
+        self::assertSame('Migration "20260403120000" is irreversible and cannot be rolled back.', $exception->getMessage());
+    }
+
+    public function test_migration_failed() : void
+    {
+        $previous = new \RuntimeException('Connection lost');
+        $exception = MigrationException::migrationFailed(Version::fromString('20260403120000'), $previous);
+
+        self::assertSame('Migration "20260403120000" failed: Connection lost', $exception->getMessage());
+        self::assertSame($previous, $exception->getPrevious());
+    }
+
+    public function test_missing_migration_file() : void
+    {
+        $exception = MigrationException::missingMigrationFile('/path/to/dir');
+
+        self::assertSame('Migration directory "/path/to/dir" must contain migration.php.', $exception->getMessage());
+    }
+
+    public function test_no_changes_detected() : void
+    {
+        $exception = MigrationException::noChangesDetected();
+
+        self::assertSame('No changes detected between source and target catalog.', $exception->getMessage());
+    }
+
+    public function test_version_not_found() : void
+    {
+        $exception = MigrationException::versionNotFound(Version::fromString('20260403120000'));
+
+        self::assertSame('Migration version "20260403120000" not found.', $exception->getMessage());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/ExecutedMigrationTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/ExecutedMigrationTest.php
new file mode 100644
index 0000000000..1bcc07f572
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/ExecutedMigrationTest.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit;
+
+use Flow\PostgreSql\Migrations\{ExecutedMigration, Version};
+use PHPUnit\Framework\TestCase;
+
+final class ExecutedMigrationTest extends TestCase
+{
+    public function test_construction() : void
+    {
+        $version = Version::fromString('20260403120000');
+        $executedAt = new \DateTimeImmutable('2026-04-03 12:00:00');
+
+        $executed = new ExecutedMigration($version, $executedAt, 150);
+
+        self::assertTrue($version->equals($executed->version));
+        self::assertSame($executedAt, $executed->executedAt);
+        self::assertSame(150, $executed->executionTimeMs);
+    }
+
+    public function test_construction_with_null_execution_time() : void
+    {
+        $executed = new ExecutedMigration(
+            Version::fromString('20260403120000'),
+            new \DateTimeImmutable('2026-04-03 12:00:00'),
+            null,
+        );
+
+        self::assertNull($executed->executionTimeMs);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Executor/DefaultMigrationExecutorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Executor/DefaultMigrationExecutorTest.php
new file mode 100644
index 0000000000..4ad24f4fc1
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Executor/DefaultMigrationExecutorTest.php
@@ -0,0 +1,213 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit\Executor;
+
+use Flow\PostgreSql\Migrations\{Direction, MigrationContext, MigrationPlan, Version};
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Executor\{DefaultMigrationExecutor, ExecutionResult};
+use Flow\PostgreSql\Migrations\Tests\Double\{FailingMigration, NonTransactionalMigration, NonTransactionalRollback, SpyClient, SpyMigration, SpyRollback};
+use PHPUnit\Framework\TestCase;
+
+final class DefaultMigrationExecutorTest extends TestCase
+{
+    public function test_execute_captures_exception() : void
+    {
+        $executor = new DefaultMigrationExecutor();
+        $plan = new MigrationPlan(
+            Version::fromString('20260401120000'),
+            new FailingMigration(),
+            null,
+            Direction::UP,
+        );
+
+        $result = $executor->execute($plan, new MigrationContext(new SpyClient()));
+
+        self::assertFalse($result->isSuccessful());
+        self::assertInstanceOf(\RuntimeException::class, $result->error);
+        self::assertSame('Migration failed', $result->error->getMessage());
+    }
+
+    public function test_execute_down_calls_rollback() : void
+    {
+        $executor = new DefaultMigrationExecutor();
+        $rollback = new SpyRollback();
+        $plan = new MigrationPlan(
+            Version::fromString('20260401120000'),
+            new SpyMigration(),
+            $rollback,
+            Direction::DOWN,
+        );
+
+        $result = $executor->execute($plan, new MigrationContext(new SpyClient()));
+
+        self::assertTrue($rollback->rollbackCalled);
+        self::assertTrue($result->isSuccessful());
+        self::assertSame(Direction::DOWN, $result->direction);
+    }
+
+    public function test_execute_down_calls_rollback_in_transaction_when_transactional() : void
+    {
+        $executor = new DefaultMigrationExecutor();
+        $rollback = new SpyRollback();
+        $client = new SpyClient();
+        $plan = new MigrationPlan(
+            Version::fromString('20260401120000'),
+            new SpyMigration(),
+            $rollback,
+            Direction::DOWN,
+        );
+
+        $result = $executor->execute($plan, new MigrationContext($client));
+
+        self::assertTrue($rollback->rollbackCalled);
+        self::assertTrue($result->isSuccessful());
+        self::assertSame(1, $client->transactionCallCount);
+    }
+
+    public function test_execute_down_calls_rollback_without_transaction_when_not_transactional() : void
+    {
+        $executor = new DefaultMigrationExecutor();
+        $rollback = new NonTransactionalRollback();
+        $client = new SpyClient();
+        $plan = new MigrationPlan(
+            Version::fromString('20260401120000'),
+            new SpyMigration(),
+            $rollback,
+            Direction::DOWN,
+        );
+
+        $result = $executor->execute($plan, new MigrationContext($client));
+
+        self::assertTrue($rollback->rollbackCalled);
+        self::assertTrue($result->isSuccessful());
+        self::assertSame(0, $client->transactionCallCount);
+    }
+
+    public function test_execute_down_without_rollback_returns_error() : void
+    {
+        $executor = new DefaultMigrationExecutor();
+        $plan = new MigrationPlan(
+            Version::fromString('20260401120000'),
+            new SpyMigration(),
+            null,
+            Direction::DOWN,
+        );
+
+        $result = $executor->execute($plan, new MigrationContext(new SpyClient()));
+
+        self::assertFalse($result->isSuccessful());
+        self::assertInstanceOf(MigrationException::class, $result->error);
+    }
+
+    public function test_execute_up_calls_migrate() : void
+    {
+        $executor = new DefaultMigrationExecutor();
+        $migration = new SpyMigration();
+        $plan = new MigrationPlan(
+            Version::fromString('20260401120000'),
+            $migration,
+            null,
+            Direction::UP,
+        );
+
+        $result = $executor->execute($plan, new MigrationContext(new SpyClient()));
+
+        self::assertTrue($migration->migrateCalled);
+        self::assertTrue($result->isSuccessful());
+        self::assertSame(Direction::UP, $result->direction);
+    }
+
+    public function test_execute_up_calls_migrate_in_transaction_when_transactional() : void
+    {
+        $executor = new DefaultMigrationExecutor();
+        $migration = new SpyMigration();
+        $client = new SpyClient();
+        $plan = new MigrationPlan(
+            Version::fromString('20260401120000'),
+            $migration,
+            null,
+            Direction::UP,
+        );
+
+        $result = $executor->execute($plan, new MigrationContext($client));
+
+        self::assertTrue($migration->migrateCalled);
+        self::assertTrue($result->isSuccessful());
+        self::assertSame(1, $client->transactionCallCount);
+    }
+
+    public function test_execute_up_calls_migrate_without_transaction_when_not_transactional() : void
+    {
+        $executor = new DefaultMigrationExecutor();
+        $migration = new NonTransactionalMigration();
+        $client = new SpyClient();
+        $plan = new MigrationPlan(
+            Version::fromString('20260401120000'),
+            $migration,
+            null,
+            Direction::UP,
+        );
+
+        $result = $executor->execute($plan, new MigrationContext($client));
+
+        self::assertTrue($migration->migrateCalled);
+        self::assertTrue($result->isSuccessful());
+        self::assertSame(0, $client->transactionCallCount);
+    }
+
+    public function test_execution_time_is_recorded() : void
+    {
+        $executor = new DefaultMigrationExecutor();
+        $plan = new MigrationPlan(
+            Version::fromString('20260401120000'),
+            new SpyMigration(),
+            null,
+            Direction::UP,
+        );
+
+        $result = $executor->execute($plan, new MigrationContext(new SpyClient()));
+
+        self::assertGreaterThanOrEqual(0, $result->executionTimeMs);
+    }
+
+    public function test_failed_result_is_not_successful() : void
+    {
+        $result = new ExecutionResult(
+            Version::fromString('20260401120000'),
+            Direction::UP,
+            0,
+            false,
+            new \RuntimeException('error'),
+        );
+
+        self::assertFalse($result->isSuccessful());
+    }
+
+    public function test_skipped_result_is_not_successful() : void
+    {
+        $result = new ExecutionResult(
+            Version::fromString('20260401120000'),
+            Direction::UP,
+            0,
+            true,
+            null,
+        );
+
+        self::assertFalse($result->isSuccessful());
+    }
+
+    public function test_successful_result_is_successful() : void
+    {
+        $result = new ExecutionResult(
+            Version::fromString('20260401120000'),
+            Direction::UP,
+            0,
+            false,
+            null,
+        );
+
+        self::assertTrue($result->isSuccessful());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Generator/DiffMigrationGeneratorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Generator/DiffMigrationGeneratorTest.php
new file mode 100644
index 0000000000..fa76ae4e5b
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Generator/DiffMigrationGeneratorTest.php
@@ -0,0 +1,179 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit\Generator;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Generator\DiffMigrationGenerator;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, SpyMigrationGenerator};
+use Flow\PostgreSql\Migrations\Version;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\Schema\{Catalog, Column, Schema, Table};
+use Flow\PostgreSql\Schema\Diff\CatalogComparator;
+use PHPUnit\Framework\TestCase;
+
+final class DiffMigrationGeneratorTest extends TestCase
+{
+    public function test_does_not_generate_rollback_when_disabled() : void
+    {
+        $source = new Catalog([]);
+        $target = new Catalog([
+            new Schema('public', [
+                new Table('public', 'users', [
+                    new Column('id', ColumnType::integer(), false),
+                ]),
+            ]),
+        ]);
+
+        $version = Version::fromString('20260403120000');
+        $spy = new SpyMigrationGenerator($version);
+
+        $diffGenerator = new DiffMigrationGenerator(
+            new FakeCatalogProvider($source),
+            new FakeCatalogProvider($target),
+            CatalogComparator::create(),
+            $spy,
+            generateRollback: false,
+        );
+
+        $diffGenerator->generate('create_users');
+
+        self::assertNotEmpty($spy->lastUpSql);
+        self::assertNull($spy->lastDownSql);
+    }
+
+    public function test_does_not_throw_when_no_changes_and_allow_empty_is_true() : void
+    {
+        $catalog = new Catalog([]);
+        $spy = new SpyMigrationGenerator(Version::fromString('20260403120000'));
+
+        $diffGenerator = new DiffMigrationGenerator(
+            new FakeCatalogProvider($catalog),
+            new FakeCatalogProvider($catalog),
+            CatalogComparator::create(),
+            $spy,
+        );
+
+        $result = $diffGenerator->generate('empty_migration', allowEmpty: true);
+
+        self::assertTrue($result->equals(Version::fromString('20260403120000')));
+        self::assertSame([], $spy->lastUpSql);
+        self::assertSame([], $spy->lastDownSql);
+    }
+
+    public function test_from_empty_schema_uses_empty_catalog_as_source() : void
+    {
+        $sourceCatalogWithData = new Catalog([
+            new Schema('public', [
+                new Table('public', 'existing_table', [
+                    new Column('id', ColumnType::integer(), false),
+                ]),
+            ]),
+        ]);
+
+        $target = new Catalog([
+            new Schema('public', [
+                new Table('public', 'existing_table', [
+                    new Column('id', ColumnType::integer(), false),
+                ]),
+                new Table('public', 'new_table', [
+                    new Column('id', ColumnType::integer(), false),
+                ]),
+            ]),
+        ]);
+
+        $version = Version::fromString('20260403120000');
+        $spy = new SpyMigrationGenerator($version);
+
+        $diffGenerator = new DiffMigrationGenerator(
+            new FakeCatalogProvider($sourceCatalogWithData),
+            new FakeCatalogProvider($target),
+            CatalogComparator::create(),
+            $spy,
+        );
+
+        $diffGenerator->generate('initial_schema', fromEmptySchema: true);
+
+        $upSqlJoined = \implode(' ', $spy->lastUpSql ?? []);
+        self::assertStringContainsString('new_table', $upSqlJoined);
+        self::assertStringContainsString('existing_table', $upSqlJoined);
+    }
+
+    public function test_generated_sql_content_comes_from_catalog_diff() : void
+    {
+        $source = new Catalog([]);
+        $target = new Catalog([
+            new Schema('public', [
+                new Table('public', 'users', [
+                    new Column('id', ColumnType::integer(), false),
+                    new Column('name', ColumnType::text(), true),
+                ]),
+            ]),
+        ]);
+
+        $version = Version::fromString('20260403120000');
+        $spy = new SpyMigrationGenerator($version);
+
+        $diffGenerator = new DiffMigrationGenerator(
+            new FakeCatalogProvider($source),
+            new FakeCatalogProvider($target),
+            CatalogComparator::create(),
+            $spy,
+        );
+
+        $diffGenerator->generate('create_users');
+
+        $upSqlJoined = \implode(' ', $spy->lastUpSql ?? []);
+        $downSqlJoined = \implode(' ', $spy->lastDownSql ?? []);
+        self::assertStringContainsString('CREATE', $upSqlJoined);
+        self::assertStringContainsString('users', $upSqlJoined);
+        self::assertStringContainsString('DROP', $downSqlJoined);
+    }
+
+    public function test_generates_migration_when_diff_has_changes() : void
+    {
+        $source = new Catalog([]);
+        $target = new Catalog([
+            new Schema('public', [
+                new Table('public', 'users', [
+                    new Column('id', ColumnType::integer(), false),
+                ]),
+            ]),
+        ]);
+
+        $version = Version::fromString('20260403120000');
+        $spy = new SpyMigrationGenerator($version);
+
+        $diffGenerator = new DiffMigrationGenerator(
+            new FakeCatalogProvider($source),
+            new FakeCatalogProvider($target),
+            CatalogComparator::create(),
+            $spy,
+        );
+
+        $result = $diffGenerator->generate('create_users');
+
+        self::assertTrue($result->equals($version));
+        self::assertSame('create_users', $spy->lastSchemaName);
+        self::assertNotEmpty($spy->lastUpSql);
+        self::assertNotEmpty($spy->lastDownSql);
+    }
+
+    public function test_throws_when_no_changes_detected_and_allow_empty_is_false() : void
+    {
+        $catalog = new Catalog([]);
+
+        $diffGenerator = new DiffMigrationGenerator(
+            new FakeCatalogProvider($catalog),
+            new FakeCatalogProvider($catalog),
+            CatalogComparator::create(),
+            new SpyMigrationGenerator(Version::fromString('20260403120000')),
+        );
+
+        $this->expectException(MigrationException::class);
+        $this->expectExceptionMessage('No changes detected');
+
+        $diffGenerator->generate('empty_migration');
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrateWithVersionAliasTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrateWithVersionAliasTest.php
new file mode 100644
index 0000000000..e787e25410
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrateWithVersionAliasTest.php
@@ -0,0 +1,268 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit;
+
+use Flow\PostgreSql\Migrations\{Configuration, Direction, Migrator, Version, VersionResolver};
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FakeMigrationRepository, FakeMigrationStore, SpyClient, SpyMigration, SpyMigrationExecutor, SpyRollback};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+
+final class MigrateWithVersionAliasTest extends TestCase
+{
+    public function test_first_migrates_up_to_first_available_version() : void
+    {
+        $store = new FakeMigrationStore();
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260403120000'), 'create_comments', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('first'));
+
+        self::assertCount(1, $results);
+        self::assertSame(Direction::UP, $results[0]->direction);
+        self::assertTrue($results[0]->version->equals(Version::fromString('20260401120000')));
+        self::assertCount(1, $store->executedMigrations());
+    }
+
+    public function test_first_rolls_back_to_first_when_all_executed() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 10);
+        $store->complete(Version::fromString('20260402120000'), 10);
+        $store->complete(Version::fromString('20260403120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260403120000'), 'create_comments', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('first'));
+
+        self::assertCount(2, $results);
+        self::assertSame(Direction::DOWN, $results[0]->direction);
+        self::assertTrue($results[0]->version->equals(Version::fromString('20260403120000')));
+        self::assertSame(Direction::DOWN, $results[1]->direction);
+        self::assertTrue($results[1]->version->equals(Version::fromString('20260402120000')));
+        self::assertCount(1, $store->executedMigrations());
+        self::assertTrue($store->executedMigrations()->has(Version::fromString('20260401120000')));
+    }
+
+    public function test_full_lifecycle_latest_then_prev_then_next_then_first() : void
+    {
+        $store = new FakeMigrationStore();
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260403120000'), 'create_comments', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('latest'));
+        self::assertCount(3, $results);
+        self::assertCount(3, $store->executedMigrations());
+
+        $results = $migrator->migrate($resolver->resolve('prev'));
+        self::assertCount(1, $results);
+        self::assertSame(Direction::DOWN, $results[0]->direction);
+        self::assertCount(2, $store->executedMigrations());
+
+        $results = $migrator->migrate($resolver->resolve('next'));
+        self::assertCount(1, $results);
+        self::assertSame(Direction::UP, $results[0]->direction);
+        self::assertCount(3, $store->executedMigrations());
+
+        $results = $migrator->migrate($resolver->resolve('first'));
+        self::assertCount(2, $results);
+        self::assertSame(Direction::DOWN, $results[0]->direction);
+        self::assertSame(Direction::DOWN, $results[1]->direction);
+        self::assertCount(1, $store->executedMigrations());
+        self::assertTrue($store->executedMigrations()->has(Version::fromString('20260401120000')));
+    }
+
+    public function test_latest_migrates_all_from_scratch() : void
+    {
+        $store = new FakeMigrationStore();
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('latest'));
+
+        self::assertCount(2, $results);
+        self::assertCount(2, $store->executedMigrations());
+    }
+
+    public function test_latest_migrates_all_pending() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260403120000'), 'create_comments', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('latest'));
+
+        self::assertCount(2, $results);
+        self::assertSame(Direction::UP, $results[0]->direction);
+        self::assertTrue($results[0]->version->equals(Version::fromString('20260402120000')));
+        self::assertSame(Direction::UP, $results[1]->direction);
+        self::assertTrue($results[1]->version->equals(Version::fromString('20260403120000')));
+        self::assertCount(3, $store->executedMigrations());
+    }
+
+    public function test_latest_returns_empty_when_already_up_to_date() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 10);
+        $store->complete(Version::fromString('20260402120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('latest'));
+
+        self::assertCount(0, $results);
+    }
+
+    public function test_next_migrates_first_when_nothing_executed() : void
+    {
+        $store = new FakeMigrationStore();
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('next'));
+
+        self::assertCount(1, $results);
+        self::assertTrue($results[0]->version->equals(Version::fromString('20260401120000')));
+    }
+
+    public function test_next_migrates_one_step_forward() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260403120000'), 'create_comments', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('next'));
+
+        self::assertCount(1, $results);
+        self::assertSame(Direction::UP, $results[0]->direction);
+        self::assertTrue($results[0]->version->equals(Version::fromString('20260402120000')));
+        self::assertCount(2, $store->executedMigrations());
+    }
+
+    public function test_prev_rolls_back_everything_when_only_one_executed() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('prev'));
+
+        self::assertCount(1, $results);
+        self::assertSame(Direction::DOWN, $results[0]->direction);
+        self::assertTrue($results[0]->version->equals(Version::fromString('20260401120000')));
+        self::assertCount(0, $store->executedMigrations());
+    }
+
+    public function test_prev_rolls_back_one_step() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 10);
+        $store->complete(Version::fromString('20260402120000'), 10);
+        $store->complete(Version::fromString('20260403120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260403120000'), 'create_comments', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $results = $migrator->migrate($resolver->resolve('prev'));
+
+        self::assertCount(1, $results);
+        self::assertSame(Direction::DOWN, $results[0]->direction);
+        self::assertTrue($results[0]->version->equals(Version::fromString('20260403120000')));
+        self::assertCount(2, $store->executedMigrations());
+        self::assertTrue($store->executedMigrations()->has(Version::fromString('20260401120000')));
+        self::assertTrue($store->executedMigrations()->has(Version::fromString('20260402120000')));
+        self::assertFalse($store->executedMigrations()->has(Version::fromString('20260403120000')));
+    }
+
+    public function test_prev_then_next_is_round_trip() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 10);
+        $store->complete(Version::fromString('20260402120000'), 10);
+
+        $repository = new FakeMigrationRepository(
+            new AvailableMigration(Version::fromString('20260401120000'), 'create_users', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260402120000'), 'create_posts', new SpyMigration(), new SpyRollback()),
+            new AvailableMigration(Version::fromString('20260403120000'), 'create_comments', new SpyMigration(), new SpyRollback()),
+        );
+        $client = new SpyClient();
+        $migrator = new Migrator($repository, $store, new SpyMigrationExecutor(), $client, new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'));
+        $resolver = new VersionResolver($repository, $store);
+
+        $migrator->migrate($resolver->resolve('prev'));
+        self::assertCount(1, $store->executedMigrations());
+        self::assertTrue($store->executedMigrations()->has(Version::fromString('20260401120000')));
+
+        $results = $migrator->migrate($resolver->resolve('next'));
+        self::assertCount(1, $results);
+        self::assertSame(Direction::UP, $results[0]->direction);
+        self::assertTrue($results[0]->version->equals(Version::fromString('20260402120000')));
+        self::assertCount(2, $store->executedMigrations());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrationPlanListTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrationPlanListTest.php
new file mode 100644
index 0000000000..9dac8c5296
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrationPlanListTest.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit;
+
+use Flow\PostgreSql\Migrations\{Direction, Migration, MigrationContext, MigrationPlan, MigrationPlanList, Version};
+use PHPUnit\Framework\TestCase;
+
+final class MigrationPlanListTest extends TestCase
+{
+    public function stubMigration() : Migration
+    {
+        return new class implements Migration {
+            public function migrate(MigrationContext $context) : void
+            {
+            }
+
+            public function transactional() : bool
+            {
+                return true;
+            }
+        };
+    }
+
+    public function test_count() : void
+    {
+        $list = new MigrationPlanList(
+            new MigrationPlan(Version::fromString('20260401120000'), $this->stubMigration(), null, Direction::UP),
+            new MigrationPlan(Version::fromString('20260402120000'), $this->stubMigration(), null, Direction::UP),
+        );
+
+        self::assertCount(2, $list);
+    }
+
+    public function test_empty_list() : void
+    {
+        $list = new MigrationPlanList();
+
+        self::assertCount(0, $list);
+        self::assertTrue($list->isEmpty());
+    }
+
+    public function test_is_not_empty() : void
+    {
+        $list = new MigrationPlanList(
+            new MigrationPlan(Version::fromString('20260401120000'), $this->stubMigration(), null, Direction::UP),
+        );
+
+        self::assertFalse($list->isEmpty());
+    }
+
+    public function test_iteration() : void
+    {
+        $plan1 = new MigrationPlan(Version::fromString('20260401120000'), $this->stubMigration(), null, Direction::UP);
+        $plan2 = new MigrationPlan(Version::fromString('20260402120000'), $this->stubMigration(), null, Direction::DOWN);
+
+        $list = new MigrationPlanList($plan1, $plan2);
+
+        $items = [];
+
+        foreach ($list as $plan) {
+            $items[] = $plan;
+        }
+
+        self::assertSame([$plan1, $plan2], $items);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrationStatusListTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrationStatusListTest.php
new file mode 100644
index 0000000000..9ae8932ea8
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrationStatusListTest.php
@@ -0,0 +1,75 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit;
+
+use Flow\PostgreSql\Migrations\{MigrationState, MigrationStatus, MigrationStatusList, Version};
+use PHPUnit\Framework\TestCase;
+
+final class MigrationStatusListTest extends TestCase
+{
+    public function test_count() : void
+    {
+        $list = new MigrationStatusList(
+            new MigrationStatus(Version::fromString('20260401120000'), 'first', MigrationState::EXECUTED, new \DateTimeImmutable()),
+            new MigrationStatus(Version::fromString('20260402120000'), 'second', MigrationState::PENDING, null),
+            new MigrationStatus(Version::fromString('20260403120000'), 'third', MigrationState::UNAVAILABLE, new \DateTimeImmutable()),
+        );
+
+        self::assertCount(3, $list);
+    }
+
+    public function test_empty_list() : void
+    {
+        $list = new MigrationStatusList();
+
+        self::assertCount(0, $list);
+        self::assertTrue($list->isEmpty());
+    }
+
+    public function test_executed_filter() : void
+    {
+        $list = new MigrationStatusList(
+            new MigrationStatus(Version::fromString('20260401120000'), 'first', MigrationState::EXECUTED, new \DateTimeImmutable()),
+            new MigrationStatus(Version::fromString('20260402120000'), 'second', MigrationState::PENDING, null),
+            new MigrationStatus(Version::fromString('20260403120000'), 'third', MigrationState::EXECUTED, new \DateTimeImmutable()),
+        );
+
+        $executed = $list->executed();
+
+        self::assertCount(2, $executed);
+
+        foreach ($executed as $status) {
+            self::assertSame(MigrationState::EXECUTED, $status->state);
+        }
+    }
+
+    public function test_iteration() : void
+    {
+        $s1 = new MigrationStatus(Version::fromString('20260401120000'), 'first', MigrationState::PENDING, null);
+        $s2 = new MigrationStatus(Version::fromString('20260402120000'), 'second', MigrationState::EXECUTED, new \DateTimeImmutable());
+
+        $list = new MigrationStatusList($s1, $s2);
+        $items = \iterator_to_array($list);
+
+        self::assertSame([$s1, $s2], $items);
+    }
+
+    public function test_pending_filter() : void
+    {
+        $list = new MigrationStatusList(
+            new MigrationStatus(Version::fromString('20260401120000'), 'first', MigrationState::EXECUTED, new \DateTimeImmutable()),
+            new MigrationStatus(Version::fromString('20260402120000'), 'second', MigrationState::PENDING, null),
+            new MigrationStatus(Version::fromString('20260403120000'), 'third', MigrationState::PENDING, null),
+        );
+
+        $pending = $list->pending();
+
+        self::assertCount(2, $pending);
+
+        foreach ($pending as $status) {
+            self::assertSame(MigrationState::PENDING, $status->state);
+        }
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrationsFactoryTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrationsFactoryTest.php
new file mode 100644
index 0000000000..12decce57b
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigrationsFactoryTest.php
@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit;
+
+use Flow\PostgreSql\Migrations\{Configuration, MigrationsFactory, Migrator, Version, VersionResolver};
+use Flow\PostgreSql\Migrations\Executor\MigrationExecutor;
+use Flow\PostgreSql\Migrations\Generator\DiffMigrationGenerator;
+use Flow\PostgreSql\Migrations\Store\MigrationStore;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FakeMigrationRepository, SpyClient, SpyMigrationGenerator};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+
+final class MigrationsFactoryTest extends TestCase
+{
+    public function test_create_diff_generator() : void
+    {
+        $factory = new MigrationsFactory(new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), \sys_get_temp_dir() . '/flow_migrations_test', 'App\\Migrations'), new FakeMigrationRepository());
+
+        self::assertInstanceOf(DiffMigrationGenerator::class, $factory->createDiffGenerator(new SpyMigrationGenerator(Version::fromString('20260401120000'))));
+    }
+
+    public function test_create_executor() : void
+    {
+        $factory = new MigrationsFactory(new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), \sys_get_temp_dir() . '/flow_migrations_test', 'App\\Migrations'), new FakeMigrationRepository());
+
+        self::assertInstanceOf(MigrationExecutor::class, $factory->createExecutor());
+    }
+
+    public function test_create_migrator() : void
+    {
+        $factory = new MigrationsFactory(new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), \sys_get_temp_dir() . '/flow_migrations_test', 'App\\Migrations'), new FakeMigrationRepository());
+
+        self::assertInstanceOf(Migrator::class, $factory->createMigrator());
+    }
+
+    public function test_create_store() : void
+    {
+        $factory = new MigrationsFactory(new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), \sys_get_temp_dir() . '/flow_migrations_test', 'App\\Migrations'), new FakeMigrationRepository());
+
+        self::assertInstanceOf(MigrationStore::class, $factory->createStore());
+    }
+
+    public function test_create_version_resolver() : void
+    {
+        $factory = new MigrationsFactory(new Configuration(new SpyClient(), new FakeCatalogProvider(new Catalog([])), \sys_get_temp_dir() . '/flow_migrations_test', 'App\\Migrations'), new FakeMigrationRepository());
+
+        self::assertInstanceOf(VersionResolver::class, $factory->createVersionResolver());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigratorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigratorTest.php
new file mode 100644
index 0000000000..da78fbb3e5
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/MigratorTest.php
@@ -0,0 +1,345 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit;
+
+use Flow\PostgreSql\Migrations\{Configuration, Direction, MigrationState, Migrator, Version};
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeCatalogProvider, FakeMigrationRepository, FakeMigrationStore, SpyClient, SpyMigration, SpyMigrationExecutor, SpyRollback};
+use Flow\PostgreSql\Schema\Catalog;
+use PHPUnit\Framework\TestCase;
+
+final class MigratorTest extends TestCase
+{
+    public function test_execute_version_down() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 100);
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), new SpyRollback()),
+            ),
+            $store,
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $result = $migrator->executeVersion(Version::fromString('20260401120000'), Direction::DOWN);
+
+        self::assertTrue($result->isSuccessful());
+        self::assertSame(Direction::DOWN, $result->direction);
+        self::assertFalse($store->executedMigrations()->has(Version::fromString('20260401120000')));
+    }
+
+    public function test_execute_version_up() : void
+    {
+        $store = new FakeMigrationStore();
+        $executor = new SpyMigrationExecutor();
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+            ),
+            $store,
+            $executor,
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $result = $migrator->executeVersion(Version::fromString('20260401120000'), Direction::UP);
+
+        self::assertTrue($result->isSuccessful());
+        self::assertCount(1, $executor->executedPlans);
+        self::assertTrue($store->executedMigrations()->has(Version::fromString('20260401120000')));
+    }
+
+    public function test_migrate_dry_run_does_not_store() : void
+    {
+        $store = new FakeMigrationStore();
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+            ),
+            $store,
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $results = $migrator->migrate(dryRun: true);
+
+        self::assertCount(1, $results);
+        self::assertTrue($results[0]->isSuccessful());
+        self::assertCount(0, $store->executedMigrations());
+    }
+
+    public function test_migrate_executes_pending_migrations() : void
+    {
+        $executor = new SpyMigrationExecutor();
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260403120000'), 'third', new SpyMigration(), null),
+            ),
+            new FakeMigrationStore(),
+            $executor,
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $results = $migrator->migrate();
+
+        self::assertCount(3, $results);
+        self::assertCount(3, $executor->executedPlans);
+
+        foreach ($results as $result) {
+            self::assertTrue($result->isSuccessful());
+            self::assertSame(Direction::UP, $result->direction);
+        }
+    }
+
+    public function test_migrate_initializes_store() : void
+    {
+        $store = new FakeMigrationStore();
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(),
+            $store,
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $migrator->migrate();
+
+        self::assertTrue($store->isInitialized());
+    }
+
+    public function test_migrate_overrides_configuration_all_or_nothing() : void
+    {
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+            ),
+            new FakeMigrationStore(),
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations', allOrNothing: true),
+        );
+
+        $migrator->migrate(allOrNothing: false);
+
+        self::assertSame(0, $client->transactionCallCount);
+    }
+
+    public function test_migrate_removes_on_down() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 100);
+        $store->complete(Version::fromString('20260402120000'), 100);
+        $store->complete(Version::fromString('20260403120000'), 100);
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), new SpyRollback()),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), new SpyRollback()),
+                new AvailableMigration(Version::fromString('20260403120000'), 'third', new SpyMigration(), new SpyRollback()),
+            ),
+            $store,
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $results = $migrator->migrate(Version::fromString('20260401120000'));
+
+        self::assertCount(2, $results);
+        self::assertCount(1, $store->executedMigrations());
+        self::assertTrue($store->executedMigrations()->has(Version::fromString('20260401120000')));
+    }
+
+    public function test_migrate_returns_empty_when_already_at_target() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 100);
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+            ),
+            $store,
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        self::assertSame([], $migrator->migrate(Version::fromString('20260401120000')));
+    }
+
+    public function test_migrate_returns_empty_when_no_available() : void
+    {
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(),
+            new FakeMigrationStore(),
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        self::assertSame([], $migrator->migrate());
+    }
+
+    public function test_migrate_stores_completed_on_success() : void
+    {
+        $store = new FakeMigrationStore();
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+            ),
+            $store,
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $migrator->migrate();
+
+        self::assertCount(2, $store->executedMigrations());
+        self::assertTrue($store->executedMigrations()->has(Version::fromString('20260401120000')));
+        self::assertTrue($store->executedMigrations()->has(Version::fromString('20260402120000')));
+    }
+
+    public function test_migrate_up_to_specific_version() : void
+    {
+        $executor = new SpyMigrationExecutor();
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260403120000'), 'third', new SpyMigration(), null),
+            ),
+            new FakeMigrationStore(),
+            $executor,
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $results = $migrator->migrate(Version::fromString('20260402120000'));
+
+        self::assertCount(2, $results);
+        self::assertCount(2, $executor->executedPlans);
+    }
+
+    public function test_migrate_uses_all_or_nothing_from_configuration() : void
+    {
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+            ),
+            new FakeMigrationStore(),
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations', allOrNothing: true),
+        );
+
+        $migrator->migrate();
+
+        self::assertSame(1, $client->transactionCallCount);
+    }
+
+    public function test_migrate_without_transaction_when_all_or_nothing_disabled() : void
+    {
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+            ),
+            new FakeMigrationStore(),
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations', allOrNothing: false),
+        );
+
+        $migrator->migrate();
+
+        self::assertSame(0, $client->transactionCallCount);
+    }
+
+    public function test_status_shows_pending_and_executed() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 100);
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+            ),
+            $store,
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $status = $migrator->status();
+
+        self::assertCount(2, $status);
+        self::assertCount(1, $status->executed());
+        self::assertCount(1, $status->pending());
+    }
+
+    public function test_status_shows_unavailable() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 100);
+        $store->complete(Version::fromString('20260499120000'), 100);
+        $client = new SpyClient();
+
+        $migrator = new Migrator(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+            ),
+            $store,
+            new SpyMigrationExecutor(),
+            $client,
+            new Configuration($client, new FakeCatalogProvider(new Catalog([])), '/tmp', 'App\\Migrations'),
+        );
+
+        $status = $migrator->status();
+
+        self::assertCount(2, $status);
+        self::assertCount(1, $status->executed());
+
+        $items = \iterator_to_array($status);
+        $unavailable = \array_filter($items, static fn ($s) => $s->state === MigrationState::UNAVAILABLE);
+
+        self::assertCount(1, $unavailable);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Repository/AvailableMigrationsTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Repository/AvailableMigrationsTest.php
new file mode 100644
index 0000000000..1d814f68e7
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Repository/AvailableMigrationsTest.php
@@ -0,0 +1,201 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit\Repository;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\{Migration, MigrationContext, Version};
+use Flow\PostgreSql\Migrations\Repository\{AvailableMigration, AvailableMigrations};
+use PHPUnit\Framework\TestCase;
+
+final class AvailableMigrationsTest extends TestCase
+{
+    public function stubMigration() : Migration
+    {
+        return new class implements Migration {
+            public function migrate(MigrationContext $context) : void
+            {
+            }
+
+            public function transactional() : bool
+            {
+                return true;
+            }
+        };
+    }
+
+    public function test_after_filters_migrations_strictly_after_given_version() : void
+    {
+        $v1 = Version::fromString('20260401120000');
+        $v2 = Version::fromString('20260402120000');
+        $v3 = Version::fromString('20260403120000');
+
+        $migrations = new AvailableMigrations(
+            new AvailableMigration($v1, 'first', $this->stubMigration(), null),
+            new AvailableMigration($v2, 'second', $this->stubMigration(), null),
+            new AvailableMigration($v3, 'third', $this->stubMigration(), null),
+        );
+
+        $after = $migrations->after($v2);
+
+        self::assertCount(1, $after);
+        self::assertTrue($after->has($v3));
+        self::assertFalse($after->has($v1));
+        self::assertFalse($after->has($v2));
+    }
+
+    public function test_after_returns_empty_when_no_migrations_after() : void
+    {
+        $v1 = Version::fromString('20260401120000');
+
+        $migrations = new AvailableMigrations(
+            new AvailableMigration($v1, 'first', $this->stubMigration(), null),
+        );
+
+        self::assertTrue($migrations->after($v1)->isEmpty());
+    }
+
+    public function test_count_returns_number_of_migrations() : void
+    {
+        $migrations = new AvailableMigrations(
+            new AvailableMigration(Version::fromString('20260401120000'), 'first', $this->stubMigration(), null),
+            new AvailableMigration(Version::fromString('20260402120000'), 'second', $this->stubMigration(), null),
+            new AvailableMigration(Version::fromString('20260403120000'), 'third', $this->stubMigration(), null),
+        );
+
+        self::assertCount(3, $migrations);
+    }
+
+    public function test_empty_collection_is_empty() : void
+    {
+        $migrations = new AvailableMigrations();
+
+        self::assertTrue($migrations->isEmpty());
+        self::assertCount(0, $migrations);
+        self::assertNull($migrations->first());
+        self::assertNull($migrations->last());
+    }
+
+    public function test_first_returns_earliest_version() : void
+    {
+        $v1 = Version::fromString('20260401120000');
+        $v2 = Version::fromString('20260402120000');
+
+        $migrations = new AvailableMigrations(
+            new AvailableMigration($v2, 'second', $this->stubMigration(), null),
+            new AvailableMigration($v1, 'first', $this->stubMigration(), null),
+        );
+
+        self::assertNotNull($migrations->first());
+        self::assertTrue($v1->equals($migrations->first()->version));
+    }
+
+    public function test_get_returns_migration_for_existing_version() : void
+    {
+        $version = Version::fromString('20260401120000');
+        $available = new AvailableMigration($version, 'test', $this->stubMigration(), null);
+        $migrations = new AvailableMigrations($available);
+
+        self::assertSame($available, $migrations->get($version));
+    }
+
+    public function test_get_throws_on_missing_version() : void
+    {
+        $migrations = new AvailableMigrations();
+
+        $this->expectException(MigrationException::class);
+        $migrations->get(Version::fromString('20260401120000'));
+    }
+
+    public function test_has_returns_false_for_missing_version() : void
+    {
+        $migrations = new AvailableMigrations();
+
+        self::assertFalse($migrations->has(Version::fromString('20260401120000')));
+    }
+
+    public function test_has_returns_true_for_existing_version() : void
+    {
+        $version = Version::fromString('20260401120000');
+        $migrations = new AvailableMigrations(
+            new AvailableMigration($version, 'test', $this->stubMigration(), null),
+        );
+
+        self::assertTrue($migrations->has($version));
+    }
+
+    public function test_iteration_is_sorted_by_version() : void
+    {
+        $v1 = Version::fromString('20260401120000');
+        $v2 = Version::fromString('20260402120000');
+        $v3 = Version::fromString('20260403120000');
+
+        $migrations = new AvailableMigrations(
+            new AvailableMigration($v3, 'third', $this->stubMigration(), null),
+            new AvailableMigration($v1, 'first', $this->stubMigration(), null),
+            new AvailableMigration($v2, 'second', $this->stubMigration(), null),
+        );
+
+        $items = \iterator_to_array($migrations);
+
+        self::assertTrue($v1->equals($items[0]->version));
+        self::assertTrue($v2->equals($items[1]->version));
+        self::assertTrue($v3->equals($items[2]->version));
+    }
+
+    public function test_last_returns_latest_version() : void
+    {
+        $v1 = Version::fromString('20260401120000');
+        $v2 = Version::fromString('20260402120000');
+
+        $migrations = new AvailableMigrations(
+            new AvailableMigration($v1, 'first', $this->stubMigration(), null),
+            new AvailableMigration($v2, 'second', $this->stubMigration(), null),
+        );
+
+        self::assertNotNull($migrations->last());
+        self::assertTrue($v2->equals($migrations->last()->version));
+    }
+
+    public function test_non_empty_collection_is_not_empty() : void
+    {
+        $migrations = new AvailableMigrations(
+            new AvailableMigration(Version::fromString('20260401120000'), 'test', $this->stubMigration(), null),
+        );
+
+        self::assertFalse($migrations->isEmpty());
+    }
+
+    public function test_up_to_filters_migrations_up_to_and_including_version() : void
+    {
+        $v1 = Version::fromString('20260401120000');
+        $v2 = Version::fromString('20260402120000');
+        $v3 = Version::fromString('20260403120000');
+
+        $migrations = new AvailableMigrations(
+            new AvailableMigration($v1, 'first', $this->stubMigration(), null),
+            new AvailableMigration($v2, 'second', $this->stubMigration(), null),
+            new AvailableMigration($v3, 'third', $this->stubMigration(), null),
+        );
+
+        $upTo = $migrations->upTo($v2);
+
+        self::assertCount(2, $upTo);
+        self::assertTrue($upTo->has($v1));
+        self::assertTrue($upTo->has($v2));
+        self::assertFalse($upTo->has($v3));
+    }
+
+    public function test_up_to_returns_empty_when_all_versions_are_after() : void
+    {
+        $v1 = Version::fromString('20260401120000');
+        $earlier = Version::fromString('20260101000000');
+
+        $migrations = new AvailableMigrations(
+            new AvailableMigration($v1, 'first', $this->stubMigration(), null),
+        );
+
+        self::assertTrue($migrations->upTo($earlier)->isEmpty());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Store/ExecutedMigrationsTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Store/ExecutedMigrationsTest.php
new file mode 100644
index 0000000000..17f74f8c2c
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/Store/ExecutedMigrationsTest.php
@@ -0,0 +1,100 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit\Store;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\{ExecutedMigration, Version};
+use Flow\PostgreSql\Migrations\Store\ExecutedMigrations;
+use PHPUnit\Framework\TestCase;
+
+final class ExecutedMigrationsTest extends TestCase
+{
+    public function test_count_returns_number_of_migrations() : void
+    {
+        $migrations = new ExecutedMigrations(
+            new ExecutedMigration(Version::fromString('20260403120000'), new \DateTimeImmutable(), 100),
+            new ExecutedMigration(Version::fromString('20260403130000'), new \DateTimeImmutable(), 200),
+            new ExecutedMigration(Version::fromString('20260403140000'), new \DateTimeImmutable(), 300),
+        );
+
+        self::assertCount(3, $migrations);
+    }
+
+    public function test_empty_collection_is_empty() : void
+    {
+        $migrations = new ExecutedMigrations();
+
+        self::assertTrue($migrations->isEmpty());
+        self::assertCount(0, $migrations);
+        self::assertNull($migrations->latest());
+    }
+
+    public function test_get_returns_migration_for_existing_version() : void
+    {
+        $version = Version::fromString('20260403120000');
+        $executed = new ExecutedMigration($version, new \DateTimeImmutable(), 100);
+        $migrations = new ExecutedMigrations($executed);
+
+        self::assertSame($executed, $migrations->get($version));
+    }
+
+    public function test_get_throws_on_missing_version() : void
+    {
+        $migrations = new ExecutedMigrations();
+
+        $this->expectException(MigrationException::class);
+        $migrations->get(Version::fromString('20260403120000'));
+    }
+
+    public function test_has_returns_false_for_missing_version() : void
+    {
+        $migrations = new ExecutedMigrations();
+
+        self::assertFalse($migrations->has(Version::fromString('20260403120000')));
+    }
+
+    public function test_has_returns_true_for_existing_version() : void
+    {
+        $version = Version::fromString('20260403120000');
+        $migrations = new ExecutedMigrations(
+            new ExecutedMigration($version, new \DateTimeImmutable(), 100),
+        );
+
+        self::assertTrue($migrations->has($version));
+    }
+
+    public function test_iteration() : void
+    {
+        $first = new ExecutedMigration(Version::fromString('20260403120000'), new \DateTimeImmutable(), 100);
+        $second = new ExecutedMigration(Version::fromString('20260403130000'), new \DateTimeImmutable(), 200);
+        $migrations = new ExecutedMigrations($first, $second);
+
+        $items = \iterator_to_array($migrations);
+
+        self::assertSame($first, $items[0]);
+        self::assertSame($second, $items[1]);
+    }
+
+    public function test_latest_returns_last_by_version_order() : void
+    {
+        $earliest = new ExecutedMigration(Version::fromString('20260403120000'), new \DateTimeImmutable(), 100);
+        $middle = new ExecutedMigration(Version::fromString('20260403130000'), new \DateTimeImmutable(), 200);
+        $latest = new ExecutedMigration(Version::fromString('20260403140000'), new \DateTimeImmutable(), 300);
+
+        $migrations = new ExecutedMigrations($middle, $latest, $earliest);
+
+        self::assertNotNull($migrations->latest());
+        self::assertTrue($latest->version->equals($migrations->latest()->version));
+    }
+
+    public function test_non_empty_collection_is_not_empty() : void
+    {
+        $migrations = new ExecutedMigrations(
+            new ExecutedMigration(Version::fromString('20260403120000'), new \DateTimeImmutable(), 100),
+        );
+
+        self::assertFalse($migrations->isEmpty());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionGenerator/RandomHexVersionGeneratorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionGenerator/RandomHexVersionGeneratorTest.php
new file mode 100644
index 0000000000..ecf452b189
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionGenerator/RandomHexVersionGeneratorTest.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit\VersionGenerator;
+
+use Flow\PostgreSql\Migrations\VersionGenerator\RandomHexVersionGenerator;
+use PHPUnit\Framework\TestCase;
+
+final class RandomHexVersionGeneratorTest extends TestCase
+{
+    public function test_generates_hex_string_of_correct_length() : void
+    {
+        $generator = new RandomHexVersionGenerator(12);
+
+        self::assertMatchesRegularExpression('/^[a-f0-9]{12}$/', (string) $generator->generate());
+    }
+
+    public function test_generates_hex_string_with_custom_length() : void
+    {
+        $generator = new RandomHexVersionGenerator(8);
+
+        self::assertMatchesRegularExpression('/^[a-f0-9]{8}$/', (string) $generator->generate());
+    }
+
+    public function test_generates_unique_values() : void
+    {
+        $generator = new RandomHexVersionGenerator();
+
+        self::assertNotSame((string) $generator->generate(), (string) $generator->generate());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionGenerator/SequentialVersionGeneratorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionGenerator/SequentialVersionGeneratorTest.php
new file mode 100644
index 0000000000..4ed49491f9
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionGenerator/SequentialVersionGeneratorTest.php
@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit\VersionGenerator;
+
+use Flow\PostgreSql\Migrations\{ExecutedMigration, Version};
+use Flow\PostgreSql\Migrations\Store\{ExecutedMigrations, MigrationStore};
+use Flow\PostgreSql\Migrations\VersionGenerator\SequentialVersionGenerator;
+use PHPUnit\Framework\TestCase;
+
+final class SequentialVersionGeneratorTest extends TestCase
+{
+    public function test_generates_first_version_when_store_is_empty() : void
+    {
+        $store = self::createStub(MigrationStore::class);
+        $store->method('executedMigrations')->willReturn(new ExecutedMigrations());
+
+        $generator = new SequentialVersionGenerator($store);
+
+        self::assertSame('00001', (string) $generator->generate());
+    }
+
+    public function test_generates_version_with_custom_padding() : void
+    {
+        $store = self::createStub(MigrationStore::class);
+        $store->method('executedMigrations')->willReturn(new ExecutedMigrations());
+
+        $generator = new SequentialVersionGenerator($store, 3);
+
+        self::assertSame('001', (string) $generator->generate());
+    }
+
+    public function test_increments_from_latest_version() : void
+    {
+        $store = self::createStub(MigrationStore::class);
+        $store->method('executedMigrations')->willReturn(
+            new ExecutedMigrations(
+                new ExecutedMigration(Version::fromString('00001'), new \DateTimeImmutable(), 100),
+                new ExecutedMigration(Version::fromString('00003'), new \DateTimeImmutable(), 200),
+                new ExecutedMigration(Version::fromString('00002'), new \DateTimeImmutable(), 150),
+            ),
+        );
+
+        $generator = new SequentialVersionGenerator($store);
+
+        self::assertSame('00004', (string) $generator->generate());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionGenerator/TimestampVersionGeneratorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionGenerator/TimestampVersionGeneratorTest.php
new file mode 100644
index 0000000000..b51657c1db
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionGenerator/TimestampVersionGeneratorTest.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit\VersionGenerator;
+
+use Flow\PostgreSql\Migrations\VersionGenerator\TimestampVersionGenerator;
+use PHPUnit\Framework\TestCase;
+
+final class TimestampVersionGeneratorTest extends TestCase
+{
+    public function test_generates_14_digit_version_with_default_format() : void
+    {
+        $generator = new TimestampVersionGenerator();
+
+        self::assertMatchesRegularExpression('/^\d{14}$/', (string) $generator->generate());
+    }
+
+    public function test_generates_version_with_custom_format() : void
+    {
+        $generator = new TimestampVersionGenerator('Ymd_His');
+
+        self::assertMatchesRegularExpression('/^\d{8}_\d{6}$/', (string) $generator->generate());
+    }
+
+    public function test_generates_version_with_date_only_format() : void
+    {
+        $generator = new TimestampVersionGenerator('Ymd');
+
+        self::assertMatchesRegularExpression('/^\d{8}$/', (string) $generator->generate());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionResolverTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionResolverTest.php
new file mode 100644
index 0000000000..c5309ae634
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionResolverTest.php
@@ -0,0 +1,123 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Repository\AvailableMigration;
+use Flow\PostgreSql\Migrations\Tests\Double\{FakeMigrationRepository, FakeMigrationStore, SpyMigration};
+use Flow\PostgreSql\Migrations\{Version, VersionResolver};
+use PHPUnit\Framework\TestCase;
+
+final class VersionResolverTest extends TestCase
+{
+    public function test_resolve_first() : void
+    {
+        $resolver = new VersionResolver(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260403120000'), 'third', new SpyMigration(), null),
+            ),
+            new FakeMigrationStore(),
+        );
+
+        self::assertTrue(Version::fromString('20260401120000')->equals($resolver->resolve('first')));
+    }
+
+    public function test_resolve_first_throws_when_empty() : void
+    {
+        $resolver = new VersionResolver(
+            new FakeMigrationRepository(),
+            new FakeMigrationStore(),
+        );
+
+        $this->expectException(MigrationException::class);
+        $resolver->resolve('first');
+    }
+
+    public function test_resolve_latest() : void
+    {
+        $resolver = new VersionResolver(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+            ),
+            new FakeMigrationStore(),
+        );
+
+        self::assertTrue(Version::fromString('20260402120000')->equals($resolver->resolve('latest')));
+    }
+
+    public function test_resolve_literal_version() : void
+    {
+        $resolver = new VersionResolver(
+            new FakeMigrationRepository(),
+            new FakeMigrationStore(),
+        );
+
+        self::assertTrue(Version::fromString('20260401120000')->equals($resolver->resolve('20260401120000')));
+    }
+
+    public function test_resolve_next_with_executed() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 100);
+
+        $resolver = new VersionResolver(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260403120000'), 'third', new SpyMigration(), null),
+            ),
+            $store,
+        );
+
+        self::assertTrue(Version::fromString('20260402120000')->equals($resolver->resolve('next')));
+    }
+
+    public function test_resolve_next_without_executed() : void
+    {
+        $resolver = new VersionResolver(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+            ),
+            new FakeMigrationStore(),
+        );
+
+        self::assertTrue(Version::fromString('20260401120000')->equals($resolver->resolve('next')));
+    }
+
+    public function test_resolve_prev() : void
+    {
+        $store = new FakeMigrationStore();
+        $store->complete(Version::fromString('20260401120000'), 100);
+        $store->complete(Version::fromString('20260402120000'), 100);
+
+        $resolver = new VersionResolver(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260402120000'), 'second', new SpyMigration(), null),
+                new AvailableMigration(Version::fromString('20260403120000'), 'third', new SpyMigration(), null),
+            ),
+            $store,
+        );
+
+        self::assertTrue(Version::fromString('20260401120000')->equals($resolver->resolve('prev')));
+    }
+
+    public function test_resolve_prev_throws_when_no_executed() : void
+    {
+        $resolver = new VersionResolver(
+            new FakeMigrationRepository(
+                new AvailableMigration(Version::fromString('20260401120000'), 'first', new SpyMigration(), null),
+            ),
+            new FakeMigrationStore(),
+        );
+
+        $this->expectException(MigrationException::class);
+        $resolver->resolve('prev');
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionTest.php
new file mode 100644
index 0000000000..6de76f59c6
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Migrations/Tests/Unit/VersionTest.php
@@ -0,0 +1,100 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Migrations\Tests\Unit;
+
+use Flow\PostgreSql\Migrations\Exception\MigrationException;
+use Flow\PostgreSql\Migrations\Version;
+use PHPUnit\Framework\TestCase;
+
+final class VersionTest extends TestCase
+{
+    public function test_equals_with_different_version() : void
+    {
+        $version1 = Version::fromString('20260403120000');
+        $version2 = Version::fromString('20260403130000');
+
+        self::assertFalse($version1->equals($version2));
+    }
+
+    public function test_equals_with_same_version() : void
+    {
+        $version1 = Version::fromString('20260403120000');
+        $version2 = Version::fromString('20260403120000');
+
+        self::assertTrue($version1->equals($version2));
+    }
+
+    public function test_from_string_rejects_special_characters() : void
+    {
+        $this->expectException(MigrationException::class);
+
+        Version::fromString('version-1.0');
+    }
+
+    public function test_from_string_with_alphanumeric_version() : void
+    {
+        $version = Version::fromString('abc123def456');
+
+        self::assertSame('abc123def456', (string) $version);
+    }
+
+    public function test_from_string_with_empty_string() : void
+    {
+        $this->expectException(MigrationException::class);
+
+        Version::fromString('');
+    }
+
+    public function test_from_string_with_numeric_version() : void
+    {
+        $version = Version::fromString('00001');
+
+        self::assertSame('00001', (string) $version);
+    }
+
+    public function test_from_string_with_timestamp_version() : void
+    {
+        $version = Version::fromString('20260403120000');
+
+        self::assertSame('20260403120000', (string) $version);
+    }
+
+    public function test_from_string_with_underscore_version() : void
+    {
+        $version = Version::fromString('2026_0403_120000');
+
+        self::assertSame('2026_0403_120000', (string) $version);
+    }
+
+    public function test_is_after_returns_false_for_earlier_version() : void
+    {
+        $earlier = Version::fromString('20260401120000');
+        $later = Version::fromString('20260403120000');
+
+        self::assertFalse($earlier->isAfter($later));
+    }
+
+    public function test_is_after_returns_false_for_same_version() : void
+    {
+        $version = Version::fromString('20260403120000');
+
+        self::assertFalse($version->isAfter(Version::fromString('20260403120000')));
+    }
+
+    public function test_is_after_returns_true_for_later_version() : void
+    {
+        $earlier = Version::fromString('20260401120000');
+        $later = Version::fromString('20260403120000');
+
+        self::assertTrue($later->isAfter($earlier));
+    }
+
+    public function test_to_string() : void
+    {
+        $version = Version::fromString('20260403120000');
+
+        self::assertSame('20260403120000', (string) $version);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/ClientTestCase.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/ClientTestCase.php
deleted file mode 100644
index 5e3bf67648..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/ClientTestCase.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\Client;
-
-use function Flow\PostgreSql\DSL\{pgsql_client, pgsql_connection_dsn, pgsql_mapper};
-use Flow\PostgreSql\Client\Client;
-use PHPUnit\Framework\TestCase;
-
-abstract class ClientTestCase extends TestCase
-{
-    protected Client $client;
-
-    protected function setUp() : void
-    {
-        if (!\extension_loaded('pgsql')) {
-            static::markTestSkipped('ext-pgsql is not available');
-        }
-
-        $dsn = \getenv('PGSQL_DATABASE_URL');
-
-        if (!$dsn) {
-            static::markTestSkipped('PGSQL_DATABASE_URL environment variable is not set');
-        }
-
-        $this->client = pgsql_client(
-            pgsql_connection_dsn($dsn),
-            mapper: pgsql_mapper(),
-        );
-    }
-
-    protected function tearDown() : void
-    {
-        if (isset($this->client)) {
-            $this->client->close();
-        }
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgCatalogSchemaProviderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgCatalogSchemaProviderTest.php
new file mode 100644
index 0000000000..ea6a260ec7
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgCatalogSchemaProviderTest.php
@@ -0,0 +1,384 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Integration\Client;
+
+use function Flow\PostgreSql\DSL\{
+    agg_count,
+    check_constraint,
+    client_catalog_provider,
+    col,
+    column,
+    column_type_bigint,
+    column_type_bigserial,
+    column_type_boolean,
+    column_type_inet,
+    column_type_integer,
+    column_type_jsonb,
+    column_type_serial,
+    column_type_text,
+    column_type_timestamp,
+    column_type_timestamptz,
+    column_type_uuid,
+    column_type_varchar,
+    create,
+    eq,
+    foreign_key,
+    func,
+    gt,
+    index_col,
+    literal,
+    primary_key,
+    select,
+    table,
+    type_attr,
+    unique_constraint
+};
+
+use Flow\PostgreSql\QueryBuilder\Condition\OperatorCondition;
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnType, ReferentialAction};
+use Flow\PostgreSql\QueryBuilder\Schema\Trigger\TriggerEvent as BuilderTriggerEvent;
+use Flow\PostgreSql\Schema\{PartitionStrategy, TriggerEvent, TriggerTiming};
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
+
+final class PgCatalogSchemaProviderTest extends PostgreSqlTestCase
+{
+    private const SCHEMA = 'flow_provider_test';
+
+    protected function setUp() : void
+    {
+        parent::setUp();
+
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA);
+        $this->pgsqlContext()->client()->execute(create()->schema(self::SCHEMA)->toSql());
+    }
+
+    protected function tearDown() : void
+    {
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA);
+
+        parent::tearDown();
+    }
+
+    public function test_read_complex_schema() : void
+    {
+        $s = self::SCHEMA;
+
+        $this->pgsqlContext()->client()->execute(create()->enumType("{$s}.user_status")->labels('active', 'inactive', 'banned')->toSql());
+
+        $this->pgsqlContext()->client()->execute(
+            create()->compositeType("{$s}.address_type")
+                ->attributes(
+                    type_attr('street', ColumnType::text()),
+                    type_attr('city', ColumnType::text()),
+                    type_attr('zip', ColumnType::varchar(10)),
+                )
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(
+            create()->domain("{$s}.positive_integer")
+                ->as(column_type_integer())
+                ->notNull()
+                ->check(gt(col('value'), literal(0)))
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(
+            create()->function("{$s}.update_modified_column")
+                ->arguments()
+                ->returns(ColumnType::custom('trigger'))
+                ->language('plpgsql')
+                ->as('BEGIN NEW.updated_at = now(); RETURN NEW; END;')
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('users', $s)
+                ->column(column('id', column_type_serial()))
+                ->column(column('email', column_type_varchar(255))->notNull())
+                ->column(column('name', column_type_text()))
+                ->column(column('active', column_type_boolean())->notNull()->default(true))
+                ->column(column('metadata', column_type_jsonb()))
+                ->column(column('created_at', column_type_timestamptz())->defaultRaw(func('now')))
+                ->constraint(primary_key('id'))
+                ->constraint(unique_constraint('email'))
+                ->constraint(check_constraint(new OperatorCondition(col('email'), '~*', literal('^.+@.+'))))
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(
+            create()->index("{$s}.idx_users_active")
+                ->on("{$s}.users")
+                ->columns(index_col('email'))
+                ->where(eq(col('active'), literal(true)))
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('posts', $s)
+                ->column(column('id', column_type_bigserial()))
+                ->column(column('user_id', column_type_integer())->notNull())
+                ->column(column('title', column_type_text())->notNull())
+                ->column(column('body', column_type_text()))
+                ->column(column('external_id', column_type_uuid())->defaultRaw(func('gen_random_uuid')))
+                ->column(column('updated_at', column_type_timestamptz()))
+                ->constraint(primary_key('id'))
+                ->constraint(foreign_key(['user_id'], "{$s}.users", ['id'])->onDelete(ReferentialAction::CASCADE))
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(
+            create()->trigger('trg_posts_updated')
+                ->before(BuilderTriggerEvent::UPDATE)
+                ->on("{$s}.posts")
+                ->forEachRow()
+                ->execute("{$s}.update_modified_column")
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('audit_log', $s)
+                ->column(column('id', column_type_bigint())->identity())
+                ->column(column('action', column_type_text())->notNull())
+                ->column(column('ip_address', column_type_inet()))
+                ->column(column('logged_at', column_type_timestamp())->defaultRaw(func('now')))
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(create()->sequence('invoice_number_seq', $s)->startWith(1000)->incrementBy(1)->toSql());
+
+        $this->pgsqlContext()->client()->execute(
+            create()->view('active_users_view', $s)
+                ->as(select(col('id'), col('email'))->from(table('users', $s)))
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(
+            create()->materializedView('user_post_counts', $s)
+                ->as(select(col('user_id'), agg_count()->as('post_count'))->from(table('posts', $s))->groupBy(col('user_id')))
+                ->toSql()
+        );
+
+        $schema = client_catalog_provider($this->pgsqlContext()->client(), [$s])->get()->get($s);
+
+        self::assertSame($s, $schema->name);
+
+        self::assertTrue($schema->hasTable('users'));
+        self::assertTrue($schema->hasTable('posts'));
+        self::assertTrue($schema->hasTable('audit_log'));
+        self::assertCount(3, $schema->tables);
+
+        $users = $schema->table('users');
+        self::assertFalse($users->column('id')->nullable);
+        self::assertFalse($users->column('email')->nullable);
+        self::assertTrue($users->column('name')->nullable);
+        self::assertFalse($users->column('active')->nullable);
+        self::assertNotNull($users->primaryKey);
+        self::assertSame(['id'], $users->primaryKey->columns);
+        self::assertCount(1, $users->uniqueConstraints);
+        self::assertCount(1, $users->checkConstraints);
+
+        $posts = $schema->table('posts');
+        self::assertCount(1, $posts->foreignKeys);
+        self::assertSame(['user_id'], $posts->foreignKeys[0]->columns);
+        self::assertSame('users', $posts->foreignKeys[0]->referenceTable);
+        self::assertSame(ReferentialAction::CASCADE, $posts->foreignKeys[0]->onDelete);
+
+        self::assertCount(1, $posts->triggers);
+        self::assertSame(TriggerTiming::BEFORE, $posts->triggers[0]->timing);
+        self::assertContains(TriggerEvent::UPDATE, $posts->triggers[0]->events);
+        self::assertTrue($posts->triggers[0]->forEachRow);
+
+        self::assertTrue($schema->hasSequence('invoice_number_seq'));
+
+        self::assertCount(1, $schema->views);
+        self::assertSame('active_users_view', $schema->views[0]->name);
+
+        self::assertCount(1, $schema->materializedViews);
+        self::assertSame('user_post_counts', $schema->materializedViews[0]->name);
+
+        $functionNames = \array_map(static fn ($f) => $f->name, $schema->functions);
+        self::assertContains('update_modified_column', $functionNames);
+
+        self::assertCount(1, $schema->domains);
+        self::assertSame('positive_integer', $schema->domains[0]->name);
+        self::assertFalse($schema->domains[0]->nullable);
+        self::assertCount(1, $schema->domains[0]->checkConstraints);
+    }
+
+    public function test_read_non_partitioned_table_has_no_partition_info() : void
+    {
+        $s = self::SCHEMA;
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('regular', $s)
+                ->column(column('id', column_type_serial()))
+                ->constraint(primary_key('id'))
+                ->toSql()
+        );
+
+        $table = client_catalog_provider($this->pgsqlContext()->client(), [$s])->get()->get($s)->table('regular');
+
+        self::assertNull($table->partitionStrategy);
+        self::assertSame([], $table->partitionColumns);
+        self::assertSame([], $table->inherits);
+    }
+
+    public function test_read_partitioned_table_by_hash() : void
+    {
+        $s = self::SCHEMA;
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('distributed', $s)
+                ->column(column('id', column_type_integer())->notNull())
+                ->column(column('name', column_type_varchar(255)))
+                ->partitionByHash('id')
+                ->toSql()
+        );
+
+        $table = client_catalog_provider($this->pgsqlContext()->client(), [$s])->get()->get($s)->table('distributed');
+
+        self::assertSame(PartitionStrategy::HASH, $table->partitionStrategy);
+        self::assertSame(['id'], $table->partitionColumns);
+    }
+
+    public function test_read_partitioned_table_by_list() : void
+    {
+        $s = self::SCHEMA;
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('regional_data', $s)
+                ->column(column('id', column_type_serial()))
+                ->column(column('region', column_type_varchar(50))->notNull())
+                ->partitionByList('region')
+                ->toSql()
+        );
+
+        $table = client_catalog_provider($this->pgsqlContext()->client(), [$s])->get()->get($s)->table('regional_data');
+
+        self::assertSame(PartitionStrategy::LIST, $table->partitionStrategy);
+        self::assertSame(['region'], $table->partitionColumns);
+    }
+
+    public function test_read_partitioned_table_by_range() : void
+    {
+        $s = self::SCHEMA;
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('events', $s)
+                ->column(column('id', column_type_serial()))
+                ->column(column('created_at', column_type_timestamptz())->notNull())
+                ->column(column('name', column_type_varchar(255)))
+                ->partitionByRange('created_at')
+                ->toSql()
+        );
+
+        $table = client_catalog_provider($this->pgsqlContext()->client(), [$s])->get()->get($s)->table('events');
+
+        self::assertSame(PartitionStrategy::RANGE, $table->partitionStrategy);
+        self::assertSame(['created_at'], $table->partitionColumns);
+    }
+
+    public function test_read_single_table() : void
+    {
+        $s = self::SCHEMA;
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('simple_table', $s)
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('description', column_type_text()))
+                ->column(column('is_active', column_type_boolean())->default(true))
+                ->column(column('score', ColumnType::numeric(5, 2)))
+                ->column(column('created_at', column_type_timestamptz())->defaultRaw(func('now')))
+                ->constraint(primary_key('id'))
+                ->toSql()
+        );
+
+        $table = client_catalog_provider($this->pgsqlContext()->client(), [$s])->get()->get($s)->table('simple_table');
+
+        self::assertSame('simple_table', $table->name);
+        self::assertCount(6, $table->columns);
+        self::assertFalse($table->column('id')->nullable);
+        self::assertFalse($table->column('name')->nullable);
+        self::assertTrue($table->column('description')->nullable);
+        self::assertNotNull($table->primaryKey);
+        self::assertSame(['id'], $table->primaryKey->columns);
+    }
+
+    public function test_read_table_default_tablespace_is_null() : void
+    {
+        $s = self::SCHEMA;
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('simple', $s)
+                ->column(column('id', column_type_serial()))
+                ->constraint(primary_key('id'))
+                ->toSql()
+        );
+
+        $table = client_catalog_provider($this->pgsqlContext()->client(), [$s])->get()->get($s)->table('simple');
+
+        self::assertNull($table->tablespace);
+    }
+
+    public function test_read_table_names() : void
+    {
+        $s = self::SCHEMA;
+
+        $this->pgsqlContext()->client()->execute(create()->table('alpha', $s)->column(column('id', column_type_serial()))->constraint(primary_key('id'))->toSql());
+        $this->pgsqlContext()->client()->execute(create()->table('beta', $s)->column(column('id', column_type_serial()))->constraint(primary_key('id'))->toSql());
+        $this->pgsqlContext()->client()->execute(create()->table('gamma', $s)->column(column('id', column_type_serial()))->constraint(primary_key('id'))->toSql());
+
+        $schema = client_catalog_provider($this->pgsqlContext()->client(), [$s])->get()->get($s);
+
+        self::assertSame(['alpha', 'beta', 'gamma'], $schema->tableNames());
+    }
+
+    public function test_read_table_with_inheritance() : void
+    {
+        $s = self::SCHEMA;
+
+        $this->pgsqlContext()->client()->execute("SET search_path TO {$s}, public");
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('persons', $s)
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(255))->notNull())
+                ->constraint(primary_key('id'))
+                ->toSql()
+        );
+
+        $this->pgsqlContext()->client()->execute(
+            create()->table('employees', $s)
+                ->column(column('department', column_type_varchar(100)))
+                ->inherits('persons')
+                ->toSql()
+        );
+
+        $schema = client_catalog_provider($this->pgsqlContext()->client(), [$s])->get()->get($s);
+        $employees = $schema->table('employees');
+
+        self::assertSame(["{$s}.persons"], $employees->inherits);
+    }
+
+    public function test_schemas_returns_catalog_with_all_schemas_when_no_filter() : void
+    {
+        $catalog = client_catalog_provider($this->pgsqlContext()->client())->get();
+
+        self::assertTrue($catalog->has(self::SCHEMA));
+        self::assertContains(self::SCHEMA, $catalog->names());
+        self::assertNotContains('pg_catalog', $catalog->names());
+        self::assertNotContains('information_schema', $catalog->names());
+    }
+
+    public function test_schemas_returns_only_filtered_schemas() : void
+    {
+        $catalog = client_catalog_provider($this->pgsqlContext()->client(), [self::SCHEMA])->get();
+
+        self::assertSame([self::SCHEMA], $catalog->names());
+        self::assertCount(1, $catalog->all());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlClientTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlClientTest.php
index eccf54cda4..9f7f29b6b2 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlClientTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlClientTest.php
@@ -8,14 +8,15 @@
     binary_expr,
     cast,
     col,
-    cond_false,
+    column_type_double_precision,
+    column_type_integer,
+    constructor_mapper,
     create,
-    data_type_double_precision,
-    data_type_integer,
     delete,
     func,
     gt,
     insert,
+    is_true,
     literal,
     param,
     row_expr,
@@ -25,32 +26,33 @@
 };
 use Flow\PostgreSql\Client\Exception\{QueryException, ResultException};
 use Flow\PostgreSql\Client\TypedValue;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
-use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, DataType};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, ColumnType};
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class PgSqlClientTest extends ClientTestCase
+final class PgSqlClientTest extends PostgreSqlTestCase
 {
     public function test_close_disconnects() : void
     {
-        $this->client->close();
+        $this->pgsqlContext()->client()->close();
 
-        self::assertFalse($this->client->isConnected());
+        self::assertFalse($this->pgsqlContext()->client()->isConnected());
     }
 
     public function test_execute_returns_affected_rows() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_execute')
-                ->column(ColumnDefinition::create('id', DataType::integer()))
+                ->column(ColumnDefinition::create('id', ColumnType::integer()))
         );
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()->into('test_execute')->columns('id')
                 ->values(literal(1))
                 ->values(literal(2))
                 ->values(literal(3))
         );
 
-        $affected = $this->client->execute(
+        $affected = $this->pgsqlContext()->client()->execute(
             delete()->from('test_execute')->where(gt(col('id'), literal(1)))
         );
 
@@ -59,8 +61,8 @@ public function test_execute_returns_affected_rows() : void
 
     public function test_fetch_all_into_maps_to_objects() : void
     {
-        $users = $this->client->fetchAllInto(
-            TestUser::class,
+        $users = $this->pgsqlContext()->client()->fetchAllInto(
+            constructor_mapper(TestUser::class),
             select(star())->from(
                 values_table(
                     row_expr([literal(1), literal('Alice'), literal('alice@example.com')]),
@@ -78,7 +80,7 @@ public function test_fetch_all_into_maps_to_objects() : void
 
     public function test_fetch_all_returns_all_rows() : void
     {
-        $rows = $this->client->fetchAll(
+        $rows = $this->pgsqlContext()->client()->fetchAll(
             select(func('generate_series', [literal(1), literal(3)])->as('num'))
         );
 
@@ -90,8 +92,8 @@ public function test_fetch_all_returns_all_rows() : void
 
     public function test_fetch_all_returns_empty_array_when_no_rows() : void
     {
-        $rows = $this->client->fetchAll(
-            select(literal(1))->where(cond_false())
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(literal(1))->where(is_true(literal(false)))
         );
 
         self::assertSame([], $rows);
@@ -99,8 +101,8 @@ public function test_fetch_all_returns_empty_array_when_no_rows() : void
 
     public function test_fetch_into_maps_to_object() : void
     {
-        $user = $this->client->fetchInto(
-            TestUser::class,
+        $user = $this->pgsqlContext()->client()->fetchInto(
+            constructor_mapper(TestUser::class),
             select(literal(1)->as('id'), param(1)->as('name'), param(2)->as('email')),
             ['John Doe', 'john@example.com']
         );
@@ -113,10 +115,10 @@ public function test_fetch_into_maps_to_object() : void
 
     public function test_fetch_into_returns_null_when_no_rows() : void
     {
-        $user = $this->client->fetchInto(
-            TestUser::class,
+        $user = $this->pgsqlContext()->client()->fetchInto(
+            constructor_mapper(TestUser::class),
             select(literal(1)->as('id'), param(1)->as('name'), param(2)->as('email'))
-                ->where(cond_false()),
+                ->where(is_true(literal(false))),
             ['John', 'john@example.com']
         );
 
@@ -125,8 +127,8 @@ public function test_fetch_into_returns_null_when_no_rows() : void
 
     public function test_fetch_one_into_maps_to_object() : void
     {
-        $user = $this->client->fetchOneInto(
-            TestUser::class,
+        $user = $this->pgsqlContext()->client()->fetchOneInto(
+            constructor_mapper(TestUser::class),
             select(literal(1)->as('id'), param(1)->as('name'), param(2)->as('email')),
             ['Jane Doe', 'jane@example.com']
         );
@@ -137,7 +139,7 @@ public function test_fetch_one_into_maps_to_object() : void
 
     public function test_fetch_one_returns_exactly_one_row() : void
     {
-        $row = $this->client->fetchOne(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(literal(42)->as('value'))
         );
 
@@ -149,7 +151,7 @@ public function test_fetch_one_throws_when_multiple_rows() : void
         $this->expectException(ResultException::class);
         $this->expectExceptionMessage('Expected exactly one row');
 
-        $this->client->fetchOne(
+        $this->pgsqlContext()->client()->fetchOne(
             select(func('generate_series', [literal(1), literal(3)]))
         );
     }
@@ -159,15 +161,15 @@ public function test_fetch_one_throws_when_no_rows() : void
         $this->expectException(ResultException::class);
         $this->expectExceptionMessage('Expected exactly one row');
 
-        $this->client->fetchOne(
-            select(literal(1))->where(cond_false())
+        $this->pgsqlContext()->client()->fetchOne(
+            select(literal(1))->where(is_true(literal(false)))
         );
     }
 
     public function test_fetch_returns_null_when_no_rows() : void
     {
-        $row = $this->client->fetch(
-            select(literal(1))->where(cond_false())
+        $row = $this->pgsqlContext()->client()->fetch(
+            select(literal(1))->where(is_true(literal(false)))
         );
 
         self::assertNull($row);
@@ -175,7 +177,7 @@ public function test_fetch_returns_null_when_no_rows() : void
 
     public function test_fetch_returns_single_row() : void
     {
-        $row = $this->client->fetch(
+        $row = $this->pgsqlContext()->client()->fetch(
             select(literal(1)->as('id'), param(1)->as('name')),
             ['Alice']
         );
@@ -187,13 +189,13 @@ public function test_fetch_returns_single_row() : void
 
     public function test_fetch_scalar_bool_returns_boolean() : void
     {
-        $value = $this->client->fetchScalarBool(
+        $value = $this->pgsqlContext()->client()->fetchScalarBool(
             select(literal(true))
         );
 
         self::assertTrue($value);
 
-        $value = $this->client->fetchScalarBool(
+        $value = $this->pgsqlContext()->client()->fetchScalarBool(
             select(literal(false))
         );
 
@@ -202,8 +204,8 @@ public function test_fetch_scalar_bool_returns_boolean() : void
 
     public function test_fetch_scalar_float_returns_float() : void
     {
-        $value = $this->client->fetchScalarFloat(
-            select(cast(literal(3.14), data_type_double_precision()))
+        $value = $this->pgsqlContext()->client()->fetchScalarFloat(
+            select(cast(literal(3.14), column_type_double_precision()))
         );
 
         self::assertSame(3.14, $value);
@@ -211,7 +213,7 @@ public function test_fetch_scalar_float_returns_float() : void
 
     public function test_fetch_scalar_int_returns_integer() : void
     {
-        $value = $this->client->fetchScalarInt(
+        $value = $this->pgsqlContext()->client()->fetchScalarInt(
             select(literal(42))
         );
 
@@ -220,8 +222,8 @@ public function test_fetch_scalar_int_returns_integer() : void
 
     public function test_fetch_scalar_returns_null_when_no_rows() : void
     {
-        $value = $this->client->fetchScalar(
-            select(literal(1))->where(cond_false())
+        $value = $this->pgsqlContext()->client()->fetchScalar(
+            select(literal(1))->where(is_true(literal(false)))
         );
 
         self::assertNull($value);
@@ -229,12 +231,12 @@ public function test_fetch_scalar_returns_null_when_no_rows() : void
 
     public function test_fetch_scalar_returns_single_value() : void
     {
-        $value = $this->client->fetchScalar(
+        $value = $this->pgsqlContext()->client()->fetchScalar(
             select(
                 binary_expr(
-                    cast(param(1), data_type_integer()),
+                    cast(param(1), column_type_integer()),
                     '+',
-                    cast(param(2), data_type_integer())
+                    cast(param(2), column_type_integer())
                 )
             ),
             ['10', '32']
@@ -245,7 +247,7 @@ public function test_fetch_scalar_returns_single_value() : void
 
     public function test_fetch_scalar_string_returns_string() : void
     {
-        $value = $this->client->fetchScalarString(
+        $value = $this->pgsqlContext()->client()->fetchScalarString(
             select(literal('hello world'))
         );
 
@@ -254,49 +256,49 @@ public function test_fetch_scalar_string_returns_string() : void
 
     public function test_is_connected() : void
     {
-        self::assertTrue($this->client->isConnected());
+        self::assertTrue($this->pgsqlContext()->client()->isConnected());
     }
 
     public function test_last_insert_id_returns_sequence_value() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_last_insert_id')
-                ->column(ColumnDefinition::create('id', DataType::serial())->primaryKey())
-                ->column(ColumnDefinition::create('name', DataType::text()))
+                ->column(ColumnDefinition::create('id', ColumnType::serial())->primaryKey())
+                ->column(ColumnDefinition::create('name', ColumnType::text()))
         );
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()->into('test_last_insert_id')->columns('name')->values(literal('first'))
         );
 
-        $id = $this->client->lastInsertId('test_last_insert_id_id_seq');
+        $id = $this->pgsqlContext()->client()->lastInsertId('test_last_insert_id_id_seq');
 
         self::assertSame(1, $id);
 
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()->into('test_last_insert_id')->columns('name')->values(literal('second'))
         );
-        $id = $this->client->lastInsertId('test_last_insert_id_id_seq');
+        $id = $this->pgsqlContext()->client()->lastInsertId('test_last_insert_id_id_seq');
 
         self::assertSame(2, $id);
     }
 
     public function test_last_insert_id_throws_when_sequence_not_used() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporarySequence('test_unused_seq')
         );
 
         $this->expectException(QueryException::class);
         $this->expectExceptionMessage('Query execution failed [55000]: Object not in prerequisite state. SQL: SELECT currval($1)');
 
-        $this->client->lastInsertId('test_unused_seq');
+        $this->pgsqlContext()->client()->lastInsertId('test_unused_seq');
     }
 
     public function test_typed_value_forces_type() : void
     {
-        $value = new TypedValue(42, PostgreSqlType::INT4);
-        $row = $this->client->fetchOne(
-            select(cast(param(1), data_type_integer())->as('val')),
+        $value = new TypedValue(42, ValueType::INT4);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(cast(param(1), column_type_integer())->as('val')),
             [$value]
         );
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlCursorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlCursorTest.php
index be93aaa7a9..cd814ebd97 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlCursorTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlCursorTest.php
@@ -4,13 +4,14 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client;
 
-use function Flow\PostgreSql\DSL\{func, literal, select};
+use function Flow\PostgreSql\DSL\{cast, column_type_boolean, column_type_integer, constructor_mapper, func, is_true, literal, row_expr, select, star, values_table};
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class PgSqlCursorTest extends ClientTestCase
+final class PgSqlCursorTest extends PostgreSqlTestCase
 {
     public function test_cursor_count() : void
     {
-        $cursor = $this->client->cursor(
+        $cursor = $this->pgsqlContext()->client()->cursor(
             select(func('generate_series', [literal(1), literal(5)])->as('num'))
         );
 
@@ -19,7 +20,7 @@ public function test_cursor_count() : void
 
     public function test_cursor_free() : void
     {
-        $cursor = $this->client->cursor(
+        $cursor = $this->pgsqlContext()->client()->cursor(
             select(literal(1)->as('num'))
         );
 
@@ -31,7 +32,7 @@ public function test_cursor_free() : void
 
     public function test_cursor_iterate_method() : void
     {
-        $cursor = $this->client->cursor(
+        $cursor = $this->pgsqlContext()->client()->cursor(
             select(func('generate_series', [literal(1), literal(2)])->as('num'))
         );
 
@@ -42,7 +43,7 @@ public function test_cursor_iterate_method() : void
 
     public function test_cursor_iterates_rows() : void
     {
-        $cursor = $this->client->cursor(
+        $cursor = $this->pgsqlContext()->client()->cursor(
             select(func('generate_series', [literal(1), literal(3)])->as('num'))
         );
 
@@ -60,11 +61,16 @@ public function test_cursor_iterates_rows() : void
 
     public function test_cursor_map_to_objects() : void
     {
-        $cursor = $this->client->cursor(
-            "SELECT * FROM (VALUES (1, 'Alice'), (2, 'Bob')) AS t(id, name)"
+        $cursor = $this->pgsqlContext()->client()->cursor(
+            select(star())->from(
+                values_table(
+                    row_expr([literal(1), literal('Alice')]),
+                    row_expr([literal(2), literal('Bob')])
+                )->as('t', ['id', 'name'])
+            )
         );
 
-        $objects = \iterator_to_array($cursor->map(CursorTestUser::class));
+        $objects = \iterator_to_array($cursor->map(constructor_mapper(CursorTestUser::class)));
 
         self::assertCount(2, $objects);
         self::assertInstanceOf(CursorTestUser::class, $objects[0]);
@@ -75,7 +81,7 @@ public function test_cursor_map_to_objects() : void
 
     public function test_cursor_next_method() : void
     {
-        $cursor = $this->client->cursor(
+        $cursor = $this->pgsqlContext()->client()->cursor(
             select(func('generate_series', [literal(1), literal(3)])->as('num'))
         );
 
@@ -96,8 +102,8 @@ public function test_cursor_next_method() : void
 
     public function test_cursor_with_type_conversion() : void
     {
-        $cursor = $this->client->cursor(
-            'SELECT 42::integer AS num, true::boolean AS flag'
+        $cursor = $this->pgsqlContext()->client()->cursor(
+            select(cast(literal(42), column_type_integer())->as('num'), cast(literal(true), column_type_boolean())->as('flag'))
         );
 
         $row = $cursor->next();
@@ -109,7 +115,7 @@ public function test_cursor_with_type_conversion() : void
 
     public function test_empty_cursor() : void
     {
-        $cursor = $this->client->cursor('SELECT 1 WHERE false');
+        $cursor = $this->pgsqlContext()->client()->cursor(select(literal(1))->where(is_true(literal(false))));
 
         self::assertSame(0, $cursor->count());
         self::assertNull($cursor->next());
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlExplainTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlExplainTest.php
index 26d9eb40c8..07b5c92aa6 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlExplainTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/PgSqlExplainTest.php
@@ -5,11 +5,13 @@
 namespace Flow\PostgreSql\Tests\Integration\Client;
 
 use function Flow\PostgreSql\DSL\{
+    binary_expr,
+    cast,
     col,
     column,
+    column_type_integer,
+    column_type_text,
     create,
-    data_type_integer,
-    data_type_text,
     eq,
     insert,
     literal,
@@ -22,9 +24,10 @@
 use Flow\PostgreSql\AST\Transformers\ExplainConfig;
 use Flow\PostgreSql\Explain\Analyzer\{PlanAnalyzer, PlanSummary};
 use Flow\PostgreSql\Explain\Plan\PlanNodeType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class PgSqlExplainTest extends ClientTestCase
+final class PgSqlExplainTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{ExplainConfig, array{
@@ -117,7 +120,7 @@ public static function provideExplainConfigCombinations() : \Generator
 
     public function test_explain_for_estimate() : void
     {
-        $plan = $this->client->explain(
+        $plan = $this->pgsqlContext()->client()->explain(
             select(literal(1)),
             config: ExplainConfig::forEstimate()
         );
@@ -129,13 +132,13 @@ public function test_explain_for_estimate() : void
 
     public function test_explain_returns_plan_for_select_query() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_explain')
-                ->column(column('id', data_type_integer()))
-                ->column(column('name', data_type_text()))
+                ->column(column('id', column_type_integer()))
+                ->column(column('name', column_type_text()))
         );
 
-        $plan = $this->client->explain(
+        $plan = $this->pgsqlContext()->client()->explain(
             select(star())->from(table('test_explain'))
         );
 
@@ -145,13 +148,13 @@ public function test_explain_returns_plan_for_select_query() : void
 
     public function test_explain_returns_plan_with_parameters() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_explain_params')
-                ->column(column('id', data_type_integer()))
-                ->column(column('name', data_type_text()))
+                ->column(column('id', column_type_integer()))
+                ->column(column('name', column_type_text()))
         );
 
-        $plan = $this->client->explain(
+        $plan = $this->pgsqlContext()->client()->explain(
             select(star())->from(table('test_explain_params'))->where(eq(col('id'), param(1))),
             ['42']
         );
@@ -161,8 +164,8 @@ public function test_explain_returns_plan_with_parameters() : void
 
     public function test_explain_returns_plan_with_raw_sql() : void
     {
-        $plan = $this->client->explain(
-            'SELECT $1::int + $2::int',
+        $plan = $this->pgsqlContext()->client()->explain(
+            select(binary_expr(cast(param(1), column_type_integer()), '+', cast(param(2), column_type_integer()))),
             ['10', '32']
         );
 
@@ -181,17 +184,17 @@ public function test_explain_returns_plan_with_raw_sql() : void
     #[DataProvider('provideExplainConfigCombinations')]
     public function test_explain_with_config_combinations(ExplainConfig $config, array $expected) : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_explain_combinations')
-                ->column(column('id', data_type_integer()))
-                ->column(column('name', data_type_text()))
+                ->column(column('id', column_type_integer()))
+                ->column(column('name', column_type_text()))
         );
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()->into('test_explain_combinations')->columns('id', 'name')
                 ->values(literal(1), literal('test'))
         );
 
-        $plan = $this->client->explain(
+        $plan = $this->pgsqlContext()->client()->explain(
             select(star())->from(table('test_explain_combinations')),
             config: $config
         );
@@ -231,12 +234,12 @@ public function test_explain_with_config_combinations(ExplainConfig $config, arr
 
     public function test_explain_with_custom_config() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_explain_config')
-                ->column(column('id', data_type_integer()))
+                ->column(column('id', column_type_integer()))
         );
 
-        $plan = $this->client->explain(
+        $plan = $this->pgsqlContext()->client()->explain(
             select(star())->from(table('test_explain_config')),
             config: sql_explain_config()
         );
@@ -247,7 +250,7 @@ public function test_explain_with_custom_config() : void
 
     public function test_explain_without_analyze() : void
     {
-        $plan = $this->client->explain(
+        $plan = $this->pgsqlContext()->client()->explain(
             select(literal(1)),
             config: sql_explain_config(
                 analyze: false,
@@ -273,17 +276,17 @@ public function test_explain_without_analyze() : void
     #[DataProvider('provideExplainConfigCombinations')]
     public function test_plan_summary_with_config_combinations(ExplainConfig $config, array $expected) : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_summary_combinations')
-                ->column(column('id', data_type_integer()))
-                ->column(column('name', data_type_text()))
+                ->column(column('id', column_type_integer()))
+                ->column(column('name', column_type_text()))
         );
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()->into('test_summary_combinations')->columns('id', 'name')
                 ->values(literal(1), literal('test'))
         );
 
-        $plan = $this->client->explain(
+        $plan = $this->pgsqlContext()->client()->explain(
             select(star())->from(table('test_summary_combinations')),
             config: $config
         );
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/QueryExceptionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/QueryExceptionTest.php
index ce9310c410..f2e0f2e380 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/QueryExceptionTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/QueryExceptionTest.php
@@ -4,23 +4,27 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client;
 
-use function Flow\PostgreSql\DSL\{create, insert, literal};
+use function Flow\PostgreSql\DSL\{alter, cast, check_constraint, col, column_type_integer, create, foreign_key, gt, insert, literal, select};
 use Flow\PostgreSql\Client\Exception\{PostgreSqlErrorCategory, QueryException};
-use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, DataType};
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, ColumnType};
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class QueryExceptionTest extends ClientTestCase
+final class QueryExceptionTest extends PostgreSqlTestCase
 {
     public function test_check_constraint_violation() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_check_violation')
-                ->column(ColumnDefinition::create('id', DataType::integer())->primaryKey())
-                ->column(ColumnDefinition::create('age', DataType::integer()))
+                ->column(ColumnDefinition::create('id', ColumnType::integer())->primaryKey())
+                ->column(ColumnDefinition::create('age', ColumnType::integer()))
+        );
+        $this->pgsqlContext()->client()->execute(
+            alter()->table('test_check_violation')
+                ->addConstraint(check_constraint(gt(col('age'), literal(0)))->name('age_positive'))
         );
-        $this->client->execute('ALTER TABLE test_check_violation ADD CONSTRAINT age_positive CHECK (age > 0)');
 
         try {
-            $this->client->execute(
+            $this->pgsqlContext()->client()->execute(
                 insert()->into('test_check_violation')
                     ->columns('id', 'age')
                     ->values(literal(1), literal(-5))
@@ -41,7 +45,7 @@ public function test_check_constraint_violation() : void
     public function test_data_exception() : void
     {
         try {
-            $this->client->execute("SELECT 'not_a_number'::integer");
+            $this->pgsqlContext()->client()->execute(select(cast(literal('not_a_number'), column_type_integer())));
             self::fail('Expected QueryException to be thrown');
         } catch (QueryException $e) {
             $error = $e->error();
@@ -54,16 +58,16 @@ public function test_data_exception() : void
 
     public function test_exception_message_format() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_safe_message')
-                ->column(ColumnDefinition::create('id', DataType::integer())->primaryKey())
+                ->column(ColumnDefinition::create('id', ColumnType::integer())->primaryKey())
         );
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()->into('test_safe_message')->columns('id')->values(literal(1))
         );
 
         try {
-            $this->client->execute(
+            $this->pgsqlContext()->client()->execute(
                 insert()->into('test_safe_message')->columns('id')->values(literal(1))
             );
             self::fail('Expected QueryException to be thrown');
@@ -75,19 +79,22 @@ public function test_exception_message_format() : void
 
     public function test_foreign_key_violation() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_fk_parent')
-                ->column(ColumnDefinition::create('id', DataType::integer())->primaryKey())
+                ->column(ColumnDefinition::create('id', ColumnType::integer())->primaryKey())
         );
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_fk_child')
-                ->column(ColumnDefinition::create('id', DataType::integer())->primaryKey())
-                ->column(ColumnDefinition::create('parent_id', DataType::integer())->notNull())
+                ->column(ColumnDefinition::create('id', ColumnType::integer())->primaryKey())
+                ->column(ColumnDefinition::create('parent_id', ColumnType::integer())->notNull())
+        );
+        $this->pgsqlContext()->client()->execute(
+            alter()->table('test_fk_child')
+                ->addConstraint(foreign_key(['parent_id'], 'test_fk_parent', ['id'])->name('test_fk'))
         );
-        $this->client->execute('ALTER TABLE test_fk_child ADD CONSTRAINT test_fk FOREIGN KEY (parent_id) REFERENCES test_fk_parent(id)');
 
         try {
-            $this->client->execute(
+            $this->pgsqlContext()->client()->execute(
                 insert()->into('test_fk_child')
                     ->columns('id', 'parent_id')
                     ->values(literal(1), literal(999))
@@ -107,14 +114,14 @@ public function test_foreign_key_violation() : void
 
     public function test_not_null_violation() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_not_null_violation')
-                ->column(ColumnDefinition::create('id', DataType::integer())->primaryKey())
-                ->column(ColumnDefinition::create('name', DataType::text())->notNull())
+                ->column(ColumnDefinition::create('id', ColumnType::integer())->primaryKey())
+                ->column(ColumnDefinition::create('name', ColumnType::text())->notNull())
         );
 
         try {
-            $this->client->execute(
+            $this->pgsqlContext()->client()->execute(
                 insert()->into('test_not_null_violation')
                     ->columns('id', 'name')
                     ->values(literal(1), literal(null))
@@ -135,7 +142,7 @@ public function test_not_null_violation() : void
     public function test_sql_is_accessible() : void
     {
         try {
-            $this->client->execute('SELECT * FORM invalid_syntax');
+            $this->pgsqlContext()->client()->execute('SELECT * FORM invalid_syntax');
             self::fail('Expected QueryException to be thrown');
         } catch (QueryException $e) {
             self::assertSame('SELECT * FORM invalid_syntax', $e->sql());
@@ -145,7 +152,7 @@ public function test_sql_is_accessible() : void
     public function test_syntax_error() : void
     {
         try {
-            $this->client->execute('SELECT * FORM users');
+            $this->pgsqlContext()->client()->execute('SELECT * FORM users');
             self::fail('Expected QueryException to be thrown');
         } catch (QueryException $e) {
             $error = $e->error();
@@ -159,19 +166,19 @@ public function test_syntax_error() : void
 
     public function test_unique_violation() : void
     {
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->temporaryTable('test_unique_violation')
-                ->column(ColumnDefinition::create('id', DataType::integer())->primaryKey())
-                ->column(ColumnDefinition::create('email', DataType::text())->unique())
+                ->column(ColumnDefinition::create('id', ColumnType::integer())->primaryKey())
+                ->column(ColumnDefinition::create('email', ColumnType::text())->unique())
         );
-        $this->client->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()->into('test_unique_violation')
                 ->columns('id', 'email')
                 ->values(literal(1), literal('test@example.com'))
         );
 
         try {
-            $this->client->execute(
+            $this->pgsqlContext()->client()->execute(
                 insert()->into('test_unique_violation')
                     ->columns('id', 'email')
                     ->values(literal(2), literal('test@example.com'))
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Telemetry/TraceableClientTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Telemetry/TraceableClientTest.php
index 60f28be8b4..cbc9e639da 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Telemetry/TraceableClientTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Telemetry/TraceableClientTest.php
@@ -4,57 +4,40 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Telemetry;
 
-use function Flow\PostgreSql\DSL\{pgsql_client, pgsql_connection_dsn, pgsql_mapper, postgresql_telemetry_config, postgresql_telemetry_options, traceable_postgresql_client};
+use function Flow\PostgreSql\DSL\{column, column_type_serial, column_type_text, create, insert, literal, param, postgresql_telemetry_config, postgresql_telemetry_options, primary_key, select, star, table, traceable_postgresql_client};
 use function Flow\Telemetry\DSL\{logger_provider, memory_context_storage, memory_log_processor, memory_metric_processor, memory_span_processor, meter_provider, resource, telemetry, tracer_provider, void_log_exporter, void_metric_exporter, void_span_exporter};
 use Flow\PostgreSql\Client\Client;
 use Flow\PostgreSql\Client\Telemetry\PostgreSqlTelemetryAttributes;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use Flow\Telemetry\Logger\Severity;
 use Flow\Telemetry\Meter\MetricType;
 use Flow\Telemetry\Provider\Clock\SystemClock;
 use Flow\Telemetry\Provider\Memory\{MemoryLogProcessor, MemoryMetricProcessor, MemorySpanProcessor};
-use PHPUnit\Framework\TestCase;
 
-final class TraceableClientTest extends TestCase
+final class TraceableClientTest extends PostgreSqlTestCase
 {
-    private Client $baseClient;
-
-    protected function setUp() : void
-    {
-        if (!\extension_loaded('pgsql')) {
-            self::markTestSkipped('ext-pgsql is not available');
-        }
-
-        $dsn = \getenv('PGSQL_DATABASE_URL');
-
-        if (!$dsn) {
-            self::markTestSkipped('PGSQL_DATABASE_URL environment variable is not set');
-        }
-
-        $this->baseClient = pgsql_client(
-            pgsql_connection_dsn($dsn),
-            mapper: pgsql_mapper(),
-        );
-    }
-
-    protected function tearDown() : void
-    {
-        if (isset($this->baseClient)) {
-            $this->baseClient->close();
-        }
-    }
-
     public function test_cursor_iteration_creates_span() : void
     {
         $spanProcessor = memory_span_processor(void_span_exporter());
         $config = $this->createConfig($spanProcessor, options: postgresql_telemetry_options(
             traceQueries: true,
         ));
-        $client = traceable_postgresql_client($this->baseClient, $config);
+        $client = traceable_postgresql_client($this->pgsqlContext()->client(), $config);
 
-        $client->execute('CREATE TEMP TABLE test_cursor (id serial PRIMARY KEY, name text)');
-        $client->execute('INSERT INTO test_cursor (name) VALUES ($1), ($2)', ['John', 'Jane']);
+        $client->execute(
+            create()->temporaryTable('test_cursor')
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_text()))
+                ->constraint(primary_key('id'))
+        );
+        $client->execute(
+            insert()->into('test_cursor')->columns('name')
+                ->values(param(1))
+                ->values(param(2)),
+            ['John', 'Jane']
+        );
 
-        $cursor = $client->cursor('SELECT * FROM test_cursor');
+        $cursor = $client->cursor(select(star())->from(table('test_cursor')));
         $rows = [];
 
         foreach ($cursor->iterate() as $row) {
@@ -75,10 +58,18 @@ public function test_execute_creates_span_with_database_attributes() : void
     {
         $spanProcessor = memory_span_processor(void_span_exporter());
         $config = $this->createConfig($spanProcessor);
-        $client = traceable_postgresql_client($this->baseClient, $config);
+        $client = traceable_postgresql_client($this->pgsqlContext()->client(), $config);
 
-        $client->execute('CREATE TEMP TABLE test_execute_span (id serial PRIMARY KEY, name text)');
-        $client->execute('INSERT INTO test_execute_span (name) VALUES ($1)', ['John']);
+        $client->execute(
+            create()->temporaryTable('test_execute_span')
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_text()))
+                ->constraint(primary_key('id'))
+        );
+        $client->execute(
+            insert()->into('test_execute_span')->columns('name')->values(param(1)),
+            ['John']
+        );
 
         $spans = $spanProcessor->endedSpans();
         self::assertCount(2, $spans);
@@ -96,10 +87,10 @@ public function test_failed_query_records_error_in_span() : void
     {
         $spanProcessor = memory_span_processor(void_span_exporter());
         $config = $this->createConfig($spanProcessor);
-        $client = traceable_postgresql_client($this->baseClient, $config);
+        $client = traceable_postgresql_client($this->pgsqlContext()->client(), $config);
 
         try {
-            $client->execute('SELECT * FROM nonexistent_table_12345');
+            $client->execute(select(star())->from(table('nonexistent_table_12345')));
         } catch (\Throwable) {
         }
 
@@ -114,11 +105,22 @@ public function test_fetch_creates_span_with_row_count() : void
     {
         $spanProcessor = memory_span_processor(void_span_exporter());
         $config = $this->createConfig($spanProcessor);
-        $client = traceable_postgresql_client($this->baseClient, $config);
+        $client = traceable_postgresql_client($this->pgsqlContext()->client(), $config);
 
-        $client->execute('CREATE TEMP TABLE test_fetch_span (id serial PRIMARY KEY, name text)');
-        $client->execute('INSERT INTO test_fetch_span (name) VALUES ($1), ($2), ($3)', ['John', 'Jane', 'Bob']);
-        $result = $client->fetchAll('SELECT * FROM test_fetch_span');
+        $client->execute(
+            create()->temporaryTable('test_fetch_span')
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_text()))
+                ->constraint(primary_key('id'))
+        );
+        $client->execute(
+            insert()->into('test_fetch_span')->columns('name')
+                ->values(param(1))
+                ->values(param(2))
+                ->values(param(3)),
+            ['John', 'Jane', 'Bob']
+        );
+        $result = $client->fetchAll(select(star())->from(table('test_fetch_span')));
 
         self::assertCount(3, $result);
 
@@ -135,10 +137,14 @@ public function test_logging_records_query_execution() : void
         $config = $this->createConfig(logProcessor: $logProcessor, options: postgresql_telemetry_options(
             logQueries: true,
         ));
-        $client = traceable_postgresql_client($this->baseClient, $config);
+        $client = traceable_postgresql_client($this->pgsqlContext()->client(), $config);
 
-        $client->execute('CREATE TEMP TABLE test_logging (id serial PRIMARY KEY)');
-        $client->execute('INSERT INTO test_logging DEFAULT VALUES');
+        $client->execute(
+            create()->temporaryTable('test_logging')
+                ->column(column('id', column_type_serial()))
+                ->constraint(primary_key('id'))
+        );
+        $client->execute(insert()->into('test_logging')->defaultValues());
 
         $logs = $logProcessor->entries();
         self::assertCount(2, $logs);
@@ -152,9 +158,9 @@ public function test_metrics_record_operation_duration() : void
         $config = $this->createConfig(metricProcessor: $metricProcessor, options: postgresql_telemetry_options(
             collectMetrics: true,
         ));
-        $client = traceable_postgresql_client($this->baseClient, $config);
+        $client = traceable_postgresql_client($this->pgsqlContext()->client(), $config);
 
-        $client->execute('SELECT 1');
+        $client->execute(select(literal(1)));
 
         $this->collectMetrics($config);
 
@@ -171,14 +177,18 @@ public function test_nested_transaction_creates_savepoint_span() : void
             traceTransactions: true,
             traceQueries: false,
         ));
-        $client = traceable_postgresql_client($this->baseClient, $config);
+        $client = traceable_postgresql_client($this->pgsqlContext()->client(), $config);
 
-        $client->execute('CREATE TEMP TABLE test_nested_tx (id serial PRIMARY KEY)');
+        $client->execute(
+            create()->temporaryTable('test_nested_tx')
+                ->column(column('id', column_type_serial()))
+                ->constraint(primary_key('id'))
+        );
         $client->transaction(static function (Client $outer) : void {
-            $outer->execute('INSERT INTO test_nested_tx DEFAULT VALUES');
+            $outer->execute(insert()->into('test_nested_tx')->defaultValues());
 
             $outer->transaction(static function (Client $inner) : void {
-                $inner->execute('INSERT INTO test_nested_tx DEFAULT VALUES');
+                $inner->execute(insert()->into('test_nested_tx')->defaultValues());
             });
         });
 
@@ -196,10 +206,18 @@ public function test_parameters_are_included_when_enabled() : void
         $config = $this->createConfig($spanProcessor, options: postgresql_telemetry_options(
             includeParameters: true,
         ));
-        $client = traceable_postgresql_client($this->baseClient, $config);
+        $client = traceable_postgresql_client($this->pgsqlContext()->client(), $config);
 
-        $client->execute('CREATE TEMP TABLE test_params (id serial PRIMARY KEY, name text)');
-        $client->execute('INSERT INTO test_params (name) VALUES ($1)', ['John']);
+        $client->execute(
+            create()->temporaryTable('test_params')
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_text()))
+                ->constraint(primary_key('id'))
+        );
+        $client->execute(
+            insert()->into('test_params')->columns('name')->values(param(1)),
+            ['John']
+        );
 
         $spans = $spanProcessor->endedSpans();
         $insertSpan = \array_filter($spans, static fn ($s) => \str_contains($s->name(), 'INSERT'));
@@ -215,11 +233,15 @@ public function test_transaction_creates_span() : void
             traceTransactions: true,
             traceQueries: false,
         ));
-        $client = traceable_postgresql_client($this->baseClient, $config);
+        $client = traceable_postgresql_client($this->pgsqlContext()->client(), $config);
 
-        $client->execute('CREATE TEMP TABLE test_tx_span (id serial PRIMARY KEY)');
+        $client->execute(
+            create()->temporaryTable('test_tx_span')
+                ->column(column('id', column_type_serial()))
+                ->constraint(primary_key('id'))
+        );
         $client->transaction(static function (Client $c) : void {
-            $c->execute('INSERT INTO test_tx_span DEFAULT VALUES');
+            $c->execute(insert()->into('test_tx_span')->defaultValues());
         });
 
         $spans = $spanProcessor->endedSpans();
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/TransactionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/TransactionTest.php
index 0c1015abd1..890fedd741 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/TransactionTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/TransactionTest.php
@@ -4,53 +4,59 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client;
 
-use function Flow\PostgreSql\DSL\{agg_count, asc, col, insert, literal, select, table};
+use function Flow\PostgreSql\DSL\{agg_count, asc, col, column, column_type_serial, column_type_text, create, insert, literal, primary_key, select, table};
 use Flow\PostgreSql\Client\Exception\TransactionException;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class TransactionTest extends ClientTestCase
+final class TransactionTest extends PostgreSqlTestCase
 {
     protected function setUp() : void
     {
         parent::setUp();
 
-        $this->client->execute('CREATE TEMP TABLE test_transaction (id serial PRIMARY KEY, name text)');
+        $this->pgsqlContext()->client()->execute(
+            create()->temporaryTable('test_transaction')
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_text()))
+                ->constraint(primary_key('id'))
+        );
     }
 
     public function test_auto_commit_default_is_true() : void
     {
-        self::assertTrue($this->client->isAutoCommit());
+        self::assertTrue($this->pgsqlContext()->client()->isAutoCommit());
     }
 
     public function test_auto_commit_disabled_allows_rollback() : void
     {
-        $this->client->setAutoCommit(false);
+        $this->pgsqlContext()->client()->setAutoCommit(false);
 
-        $this->client->execute(insert()->into('test_transaction')->columns('name')->values(literal('will be rolled back')));
+        $this->pgsqlContext()->client()->execute(insert()->into('test_transaction')->columns('name')->values(literal('will be rolled back')));
 
-        $this->client->rollBack();
+        $this->pgsqlContext()->client()->rollBack();
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
         self::assertSame(0, $count);
 
-        self::assertSame(0, $this->client->getTransactionNestingLevel());
+        self::assertSame(0, $this->pgsqlContext()->client()->getTransactionNestingLevel());
     }
 
     public function test_auto_commit_disabled_starts_transaction() : void
     {
-        self::assertSame(0, $this->client->getTransactionNestingLevel());
+        self::assertSame(0, $this->pgsqlContext()->client()->getTransactionNestingLevel());
 
-        $this->client->setAutoCommit(false);
+        $this->pgsqlContext()->client()->setAutoCommit(false);
 
-        self::assertFalse($this->client->isAutoCommit());
-        self::assertSame(1, $this->client->getTransactionNestingLevel());
+        self::assertFalse($this->pgsqlContext()->client()->isAutoCommit());
+        self::assertSame(1, $this->pgsqlContext()->client()->getTransactionNestingLevel());
 
-        $this->client->execute(insert()->into('test_transaction')->columns('name')->values(literal('in transaction')));
+        $this->pgsqlContext()->client()->execute(insert()->into('test_transaction')->columns('name')->values(literal('in transaction')));
 
-        $this->client->setAutoCommit(true);
-        self::assertTrue($this->client->isAutoCommit());
-        self::assertSame(0, $this->client->getTransactionNestingLevel());
+        $this->pgsqlContext()->client()->setAutoCommit(true);
+        self::assertTrue($this->pgsqlContext()->client()->isAutoCommit());
+        self::assertSame(0, $this->pgsqlContext()->client()->getTransactionNestingLevel());
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
         self::assertSame(1, $count);
     }
 
@@ -59,12 +65,12 @@ public function test_commit_without_transaction_throws() : void
         $this->expectException(TransactionException::class);
         $this->expectExceptionMessage('no active transaction');
 
-        $this->client->commit();
+        $this->pgsqlContext()->client()->commit();
     }
 
     public function test_deeply_nested_transactions() : void
     {
-        $this->client->transaction(static function ($client) : void {
+        $this->pgsqlContext()->client()->transaction(static function ($client) : void {
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('level1')));
 
             $client->transaction(static function ($client) : void {
@@ -76,46 +82,46 @@ public function test_deeply_nested_transactions() : void
             });
         });
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
         self::assertSame(3, $count);
     }
 
     public function test_explicit_begin_commit() : void
     {
-        $this->client->beginTransaction();
-        $this->client->execute(insert()->into('test_transaction')->columns('name')->values(literal('explicit')));
-        $this->client->commit();
+        $this->pgsqlContext()->client()->beginTransaction();
+        $this->pgsqlContext()->client()->execute(insert()->into('test_transaction')->columns('name')->values(literal('explicit')));
+        $this->pgsqlContext()->client()->commit();
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
         self::assertSame(1, $count);
     }
 
     public function test_explicit_begin_rollback() : void
     {
-        $this->client->beginTransaction();
-        $this->client->execute(insert()->into('test_transaction')->columns('name')->values(literal('will_rollback')));
-        $this->client->rollBack();
+        $this->pgsqlContext()->client()->beginTransaction();
+        $this->pgsqlContext()->client()->execute(insert()->into('test_transaction')->columns('name')->values(literal('will_rollback')));
+        $this->pgsqlContext()->client()->rollBack();
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
         self::assertSame(0, $count);
     }
 
     public function test_multiple_operations_in_transaction() : void
     {
-        $this->client->transaction(static function ($client) : void {
+        $this->pgsqlContext()->client()->transaction(static function ($client) : void {
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('first')));
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('second')));
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('third')));
         });
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
 
         self::assertSame(3, $count);
     }
 
     public function test_nested_transaction_commits() : void
     {
-        $this->client->transaction(static function ($client) : void {
+        $this->pgsqlContext()->client()->transaction(static function ($client) : void {
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('outer')));
 
             $client->transaction(static function ($client) : void {
@@ -123,13 +129,13 @@ public function test_nested_transaction_commits() : void
             });
         });
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
         self::assertSame(2, $count);
     }
 
     public function test_nested_transaction_inner_rollback() : void
     {
-        $this->client->transaction(static function ($client) : void {
+        $this->pgsqlContext()->client()->transaction(static function ($client) : void {
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('outer')));
 
             try {
@@ -144,10 +150,10 @@ public function test_nested_transaction_inner_rollback() : void
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('after inner')));
         });
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
         self::assertSame(2, $count);
 
-        $names = $this->client->fetchAll(select(col('name'))->from(table('test_transaction'))->orderBy(asc(col('id'))));
+        $names = $this->pgsqlContext()->client()->fetchAll(select(col('name'))->from(table('test_transaction'))->orderBy(asc(col('id'))));
         self::assertSame('outer', $names[0]['name']);
         self::assertSame('after inner', $names[1]['name']);
     }
@@ -155,7 +161,7 @@ public function test_nested_transaction_inner_rollback() : void
     public function test_nested_transaction_outer_rollback_includes_inner() : void
     {
         try {
-            $this->client->transaction(static function ($client) : void {
+            $this->pgsqlContext()->client()->transaction(static function ($client) : void {
                 $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('outer')));
 
                 $client->transaction(static function ($client) : void {
@@ -167,25 +173,25 @@ public function test_nested_transaction_outer_rollback_includes_inner() : void
         } catch (\RuntimeException) {
         }
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
         self::assertSame(0, $count);
     }
 
     public function test_nesting_level_tracking() : void
     {
-        self::assertSame(0, $this->client->getTransactionNestingLevel());
+        self::assertSame(0, $this->pgsqlContext()->client()->getTransactionNestingLevel());
 
-        $this->client->beginTransaction();
-        self::assertSame(1, $this->client->getTransactionNestingLevel());
+        $this->pgsqlContext()->client()->beginTransaction();
+        self::assertSame(1, $this->pgsqlContext()->client()->getTransactionNestingLevel());
 
-        $this->client->beginTransaction();
-        self::assertSame(2, $this->client->getTransactionNestingLevel());
+        $this->pgsqlContext()->client()->beginTransaction();
+        self::assertSame(2, $this->pgsqlContext()->client()->getTransactionNestingLevel());
 
-        $this->client->commit();
-        self::assertSame(1, $this->client->getTransactionNestingLevel());
+        $this->pgsqlContext()->client()->commit();
+        self::assertSame(1, $this->pgsqlContext()->client()->getTransactionNestingLevel());
 
-        $this->client->rollBack();
-        self::assertSame(0, $this->client->getTransactionNestingLevel());
+        $this->pgsqlContext()->client()->rollBack();
+        self::assertSame(0, $this->pgsqlContext()->client()->getTransactionNestingLevel());
     }
 
     public function test_rollback_without_transaction_throws() : void
@@ -193,23 +199,23 @@ public function test_rollback_without_transaction_throws() : void
         $this->expectException(TransactionException::class);
         $this->expectExceptionMessage('no active transaction');
 
-        $this->client->rollBack();
+        $this->pgsqlContext()->client()->rollBack();
     }
 
     public function test_set_auto_commit_same_value_does_nothing() : void
     {
-        self::assertTrue($this->client->isAutoCommit());
-        self::assertSame(0, $this->client->getTransactionNestingLevel());
+        self::assertTrue($this->pgsqlContext()->client()->isAutoCommit());
+        self::assertSame(0, $this->pgsqlContext()->client()->getTransactionNestingLevel());
 
-        $this->client->setAutoCommit(true);
+        $this->pgsqlContext()->client()->setAutoCommit(true);
 
-        self::assertTrue($this->client->isAutoCommit());
-        self::assertSame(0, $this->client->getTransactionNestingLevel());
+        self::assertTrue($this->pgsqlContext()->client()->isAutoCommit());
+        self::assertSame(0, $this->pgsqlContext()->client()->getTransactionNestingLevel());
     }
 
     public function test_transaction_can_query_within() : void
     {
-        $result = $this->client->transaction(static function ($client) {
+        $result = $this->pgsqlContext()->client()->transaction(static function ($client) {
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('query test')));
 
             return $client->fetchScalar(select(agg_count())->from(table('test_transaction')));
@@ -220,18 +226,18 @@ public function test_transaction_can_query_within() : void
 
     public function test_transaction_commits_on_success() : void
     {
-        $this->client->transaction(static function ($client) : void {
+        $this->pgsqlContext()->client()->transaction(static function ($client) : void {
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('committed')));
         });
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
 
         self::assertSame(1, $count);
     }
 
     public function test_transaction_returns_callback_value() : void
     {
-        $result = $this->client->transaction(static function ($client) {
+        $result = $this->pgsqlContext()->client()->transaction(static function ($client) {
             $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('test')));
 
             return 'success';
@@ -243,7 +249,7 @@ public function test_transaction_returns_callback_value() : void
     public function test_transaction_rollbacks_on_exception() : void
     {
         try {
-            $this->client->transaction(static function ($client) : void {
+            $this->pgsqlContext()->client()->transaction(static function ($client) : void {
                 $client->execute(insert()->into('test_transaction')->columns('name')->values(literal('will be rolled back')));
 
                 throw new \RuntimeException('Simulated failure');
@@ -251,7 +257,7 @@ public function test_transaction_rollbacks_on_exception() : void
         } catch (\RuntimeException) {
         }
 
-        $count = $this->client->fetchScalar(select(agg_count())->from(table('test_transaction')));
+        $count = $this->pgsqlContext()->client()->fetchScalar(select(agg_count())->from(table('test_transaction')));
 
         self::assertSame(0, $count);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/BooleanConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/BooleanConverterTest.php
index 2a5dd3c617..dabf7f4045 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/BooleanConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/BooleanConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_boolean, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class BooleanConverterTest extends ConverterTestCase
+final class BooleanConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string, bool}>
@@ -37,7 +38,7 @@ public static function provide_boolean_values() : \Generator
     #[DataProvider('provide_boolean_values')]
     public function test_boolean_round_trip(bool $input, bool $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::bool AS val', [typed($input, PostgreSqlType::BOOL)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_boolean())->as('val'))->toSql(), [typed($input, ValueType::BOOL)]);
 
         self::assertSame($expected, $result);
     }
@@ -45,14 +46,14 @@ public function test_boolean_round_trip(bool $input, bool $expected) : void
     #[DataProvider('provide_boolean_strings')]
     public function test_boolean_string_conversion(string $input, bool $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::bool AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_boolean())->as('val'))->toSql(), [$input]);
 
         self::assertSame($expected, $result);
     }
 
     public function test_null_boolean() : void
     {
-        $result = $this->fetchValue('SELECT NULL::bool AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_boolean())->as('val'))->toSql());
 
         self::assertNull($result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/ByteaConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/ByteaConverterTest.php
index 4a63d64d8c..62b4a47647 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/ByteaConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/ByteaConverterTest.php
@@ -4,9 +4,11 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
+use function Flow\PostgreSql\DSL\{cast, column_type_bytea, literal, param, select};
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class ByteaConverterTest extends ConverterTestCase
+final class ByteaConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string, string}>
@@ -31,14 +33,14 @@ public static function provide_hex_bytea_values() : \Generator
 
     public function test_binary_data_via_hex_literal() : void
     {
-        $result = $this->fetchValue("SELECT '\\x00010203'::bytea AS val");
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal('\\x00010203'), column_type_bytea())->as('val'))->toSql());
 
         self::assertSame("\x00\x01\x02\x03", $result);
     }
 
     public function test_binary_data_with_null_bytes_via_hex() : void
     {
-        $result = $this->fetchValue("SELECT '\\x7465737400646174610a'::bytea AS val");
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal('\\x7465737400646174610a'), column_type_bytea())->as('val'))->toSql());
 
         self::assertSame("test\x00data\x0a", $result);
     }
@@ -46,7 +48,7 @@ public function test_binary_data_with_null_bytes_via_hex() : void
     #[DataProvider('provide_hex_bytea_values')]
     public function test_bytea_hex_format(string $hexInput, string $expected) : void
     {
-        $result = $this->fetchValue("SELECT '\\x{$hexInput}'::bytea AS val");
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal('\\x' . $hexInput), column_type_bytea())->as('val'))->toSql());
 
         self::assertSame($expected, $result);
     }
@@ -54,7 +56,7 @@ public function test_bytea_hex_format(string $hexInput, string $expected) : void
     #[DataProvider('provide_bytea_values')]
     public function test_bytea_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::bytea AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_bytea())->as('val'))->toSql(), [$input]);
 
         self::assertSame($expected, $result);
     }
@@ -63,14 +65,14 @@ public function test_large_bytea_data() : void
     {
         $data = \str_repeat('abcdefghijklmnopqrstuvwxyz0123456789', 100);
 
-        $result = $this->fetchValue('SELECT $1::bytea AS val', [$data]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_bytea())->as('val'))->toSql(), [$data]);
 
         self::assertSame($data, $result);
     }
 
     public function test_null_bytea() : void
     {
-        $result = $this->fetchValue('SELECT NULL::bytea AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_bytea())->as('val'))->toSql());
 
         self::assertNull($result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/CidrConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/CidrConverterTest.php
index 60805d9f61..b8002e3690 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/CidrConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/CidrConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_cidr, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class CidrConverterTest extends ConverterTestCase
+final class CidrConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string, string}>
@@ -24,14 +25,14 @@ public static function provide_cidr_values() : \Generator
     #[DataProvider('provide_cidr_values')]
     public function test_cidr_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::cidr AS val', [typed($input, PostgreSqlType::CIDR)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_cidr())->as('val'))->toSql(), [typed($input, ValueType::CIDR)]);
 
         self::assertSame($expected, $result);
     }
 
     public function test_null_cidr() : void
     {
-        $result = $this->fetchValue('SELECT NULL::cidr AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_cidr())->as('val'))->toSql());
 
         self::assertNull($result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/ConverterTestCase.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/ConverterTestCase.php
deleted file mode 100644
index 1d70d61ce5..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/ConverterTestCase.php
+++ /dev/null
@@ -1,51 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
-
-use function Flow\PostgreSql\DSL\{pgsql_client, pgsql_connection_dsn, pgsql_mapper};
-use Flow\PostgreSql\Client\Client;
-use PHPUnit\Framework\TestCase;
-
-abstract class ConverterTestCase extends TestCase
-{
-    protected Client $client;
-
-    protected function setUp() : void
-    {
-        if (!\extension_loaded('pgsql')) {
-            static::markTestSkipped('ext-pgsql is not available');
-        }
-
-        $dsn = \getenv('PGSQL_DATABASE_URL');
-
-        if (!$dsn) {
-            static::markTestSkipped('PGSQL_DATABASE_URL environment variable is not set');
-        }
-
-        $this->client = pgsql_client(
-            pgsql_connection_dsn($dsn),
-            mapper: pgsql_mapper(),
-        );
-    }
-
-    protected function tearDown() : void
-    {
-        if (isset($this->client)) {
-            $this->client->close();
-        }
-    }
-
-    /**
-     * @param array<int, mixed> $params
-     *
-     * @return mixed
-     */
-    protected function fetchValue(string $sql, array $params = [])
-    {
-        $row = $this->client->fetchOne($sql, $params);
-
-        return \array_values($row)[0];
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/DateConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/DateConverterTest.php
index a1468e72e9..5efd57d510 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/DateConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/DateConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_date, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class DateConverterTest extends ConverterTestCase
+final class DateConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string, string}>
@@ -41,7 +42,7 @@ public static function provide_datetime_to_date() : \Generator
     #[DataProvider('provide_date_values')]
     public function test_date_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::date AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_date())->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
         self::assertSame($expected, $result);
@@ -50,7 +51,7 @@ public function test_date_round_trip(string $input, string $expected) : void
     #[DataProvider('provide_datetime_to_date')]
     public function test_datetime_object_to_date(\DateTimeImmutable $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::date AS val', [typed($input, PostgreSqlType::DATE)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_date())->as('val'))->toSql(), [typed($input, ValueType::DATE)]);
 
         self::assertIsString($result);
         self::assertSame($expected, $result);
@@ -58,7 +59,7 @@ public function test_datetime_object_to_date(\DateTimeImmutable $input, string $
 
     public function test_null_date() : void
     {
-        $result = $this->fetchValue('SELECT NULL::date AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_date())->as('val'))->toSql());
 
         self::assertNull($result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/DateTimeConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/DateTimeConverterTest.php
index 7d951835ba..54552eb449 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/DateTimeConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/DateTimeConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_timestamp, column_type_timestamptz, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class DateTimeConverterTest extends ConverterTestCase
+final class DateTimeConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{\DateTimeImmutable, string}>
@@ -53,7 +54,7 @@ public static function provide_timestamptz_values() : \Generator
     #[DataProvider('provide_datetime_objects')]
     public function test_datetime_object_to_timestamp(\DateTimeImmutable $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::timestamp AS val', [typed($input, PostgreSqlType::TIMESTAMP)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_timestamp())->as('val'))->toSql(), [typed($input, ValueType::TIMESTAMP)]);
 
         self::assertIsString($result);
         self::assertSame($expected, $result);
@@ -61,14 +62,14 @@ public function test_datetime_object_to_timestamp(\DateTimeImmutable $input, str
 
     public function test_null_timestamp() : void
     {
-        $result = $this->fetchValue('SELECT NULL::timestamp AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_timestamp())->as('val'))->toSql());
 
         self::assertNull($result);
     }
 
     public function test_null_timestamptz() : void
     {
-        $result = $this->fetchValue('SELECT NULL::timestamptz AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_timestamptz())->as('val'))->toSql());
 
         self::assertNull($result);
     }
@@ -76,7 +77,7 @@ public function test_null_timestamptz() : void
     #[DataProvider('provide_timestamp_values')]
     public function test_timestamp_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::timestamp AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_timestamp())->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
         self::assertSame($expected, $result);
@@ -85,7 +86,7 @@ public function test_timestamp_round_trip(string $input, string $expected) : voi
     #[DataProvider('provide_timestamp_with_microseconds')]
     public function test_timestamp_with_microseconds(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::timestamp AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_timestamp())->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
         self::assertStringStartsWith($expected, $result);
@@ -94,7 +95,7 @@ public function test_timestamp_with_microseconds(string $input, string $expected
     #[DataProvider('provide_timestamptz_values')]
     public function test_timestamptz_round_trip(string $input) : void
     {
-        $result = $this->fetchValue('SELECT $1::timestamptz AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_timestamptz())->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/FloatConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/FloatConverterTest.php
index 93633fd6ce..2e9268de40 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/FloatConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/FloatConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_double_precision, column_type_numeric, column_type_real, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class FloatConverterTest extends ConverterTestCase
+final class FloatConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{float, float}>
@@ -48,7 +49,7 @@ public static function provide_numeric_values() : \Generator
     #[DataProvider('provide_float4_values')]
     public function test_float4_round_trip(float $input, float $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::float4 AS val', [typed($input, PostgreSqlType::FLOAT4)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_real())->as('val'))->toSql(), [typed($input, ValueType::FLOAT4)]);
 
         self::assertEqualsWithDelta($expected, $result, 0.0001);
     }
@@ -56,14 +57,14 @@ public function test_float4_round_trip(float $input, float $expected) : void
     #[DataProvider('provide_float8_values')]
     public function test_float8_round_trip(float $input, float $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::float8 AS val', [typed($input, PostgreSqlType::FLOAT8)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_double_precision())->as('val'))->toSql(), [typed($input, ValueType::FLOAT8)]);
 
         self::assertEqualsWithDelta($expected, $result, 0.00000001);
     }
 
     public function test_null_float() : void
     {
-        $result = $this->fetchValue('SELECT NULL::float8 AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_double_precision())->as('val'))->toSql());
 
         self::assertNull($result);
     }
@@ -71,28 +72,28 @@ public function test_null_float() : void
     #[DataProvider('provide_numeric_values')]
     public function test_numeric_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::numeric AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_numeric())->as('val'))->toSql(), [$input]);
 
         self::assertSame($expected, $result);
     }
 
     public function test_special_float_infinity() : void
     {
-        $result = $this->fetchValue("SELECT 'Infinity'::float8 AS val");
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal('Infinity'), column_type_double_precision())->as('val'))->toSql());
 
         self::assertSame(INF, $result);
     }
 
     public function test_special_float_nan() : void
     {
-        $result = $this->fetchValue("SELECT 'NaN'::float8 AS val");
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal('NaN'), column_type_double_precision())->as('val'))->toSql());
 
         self::assertNan($result);
     }
 
     public function test_special_float_negative_infinity() : void
     {
-        $result = $this->fetchValue("SELECT '-Infinity'::float8 AS val");
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal('-Infinity'), column_type_double_precision())->as('val'))->toSql());
 
         self::assertSame(-INF, $result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/InetConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/InetConverterTest.php
index a25fec8a0c..5fc6150275 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/InetConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/InetConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_inet, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class InetConverterTest extends ConverterTestCase
+final class InetConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string, string}>
@@ -25,14 +26,14 @@ public static function provide_inet_values() : \Generator
     #[DataProvider('provide_inet_values')]
     public function test_inet_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::inet AS val', [typed($input, PostgreSqlType::INET)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_inet())->as('val'))->toSql(), [typed($input, ValueType::INET)]);
 
         self::assertSame($expected, $result);
     }
 
     public function test_null_inet() : void
     {
-        $result = $this->fetchValue('SELECT NULL::inet AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_inet())->as('val'))->toSql());
 
         self::assertNull($result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/IntegerConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/IntegerConverterTest.php
index 130daacd4b..2411bed309 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/IntegerConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/IntegerConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_bigint, column_type_integer, column_type_smallint, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class IntegerConverterTest extends ConverterTestCase
+final class IntegerConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{int, int}>
@@ -47,7 +48,7 @@ public static function provide_int8_values() : \Generator
     #[DataProvider('provide_int2_values')]
     public function test_int2_round_trip(int $input, int $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::int2 AS val', [typed($input, PostgreSqlType::INT2)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_smallint())->as('val'))->toSql(), [typed($input, ValueType::INT2)]);
 
         self::assertSame($expected, $result);
     }
@@ -55,7 +56,7 @@ public function test_int2_round_trip(int $input, int $expected) : void
     #[DataProvider('provide_int4_values')]
     public function test_int4_round_trip(int $input, int $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::int4 AS val', [typed($input, PostgreSqlType::INT4)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_integer())->as('val'))->toSql(), [typed($input, ValueType::INT4)]);
 
         self::assertSame($expected, $result);
     }
@@ -63,14 +64,14 @@ public function test_int4_round_trip(int $input, int $expected) : void
     #[DataProvider('provide_int8_values')]
     public function test_int8_round_trip(int $input, int $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::int8 AS val', [typed($input, PostgreSqlType::INT8)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_bigint())->as('val'))->toSql(), [typed($input, ValueType::INT8)]);
 
         self::assertSame($expected, $result);
     }
 
     public function test_null_integer() : void
     {
-        $result = $this->fetchValue('SELECT NULL::int4 AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_integer())->as('val'))->toSql());
 
         self::assertNull($result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/JsonConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/JsonConverterTest.php
index 1299c43f4e..3a4a3eea50 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/JsonConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/JsonConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_json, column_type_jsonb, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class JsonConverterTest extends ConverterTestCase
+final class JsonConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{array<mixed>, string}>
@@ -77,7 +78,7 @@ public static function provide_nested_json() : \Generator
     #[DataProvider('provide_json_arrays')]
     public function test_json_array_round_trip(array $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::json AS val', [typed($input, PostgreSqlType::JSON)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_json())->as('val'))->toSql(), [typed($input, ValueType::JSON)]);
 
         self::assertIsString($result);
         self::assertSame($expected, $result);
@@ -86,7 +87,7 @@ public function test_json_array_round_trip(array $input, string $expected) : voi
     #[DataProvider('provide_json_strings')]
     public function test_json_string_round_trip(string $input) : void
     {
-        $result = $this->fetchValue('SELECT $1::json AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_json())->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
         self::assertSame($input, $result);
@@ -95,7 +96,7 @@ public function test_json_string_round_trip(string $input) : void
     #[DataProvider('provide_jsonb_strings')]
     public function test_jsonb_string_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::jsonb AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_jsonb())->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
         self::assertSame($expected, $result);
@@ -107,7 +108,7 @@ public function test_jsonb_string_round_trip(string $input, string $expected) :
     #[DataProvider('provide_nested_json')]
     public function test_nested_json_round_trip(array $input) : void
     {
-        $result = $this->fetchValue('SELECT $1::json AS val', [typed($input, PostgreSqlType::JSON)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_json())->as('val'))->toSql(), [typed($input, ValueType::JSON)]);
 
         self::assertIsString($result);
         self::assertSame($input, \json_decode($result, true, 512, \JSON_THROW_ON_ERROR));
@@ -115,14 +116,14 @@ public function test_nested_json_round_trip(array $input) : void
 
     public function test_null_json() : void
     {
-        $result = $this->fetchValue('SELECT NULL::json AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_json())->as('val'))->toSql());
 
         self::assertNull($result);
     }
 
     public function test_null_jsonb() : void
     {
-        $result = $this->fetchValue('SELECT NULL::jsonb AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_jsonb())->as('val'))->toSql());
 
         self::assertNull($result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/MoneyConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/MoneyConverterTest.php
index 350370885c..a8f966a227 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/MoneyConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/MoneyConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_custom, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class MoneyConverterTest extends ConverterTestCase
+final class MoneyConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string, string}>
@@ -22,7 +23,7 @@ public static function provide_money_values() : \Generator
 
     public function test_money_from_numeric() : void
     {
-        $result = $this->fetchValue('SELECT 99.99::money AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(99.99), column_type_custom('money'))->as('val'))->toSql());
 
         self::assertSame('$99.99', $result);
     }
@@ -30,14 +31,14 @@ public function test_money_from_numeric() : void
     #[DataProvider('provide_money_values')]
     public function test_money_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::money AS val', [typed($input, PostgreSqlType::MONEY)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_custom('money'))->as('val'))->toSql(), [typed($input, ValueType::MONEY)]);
 
         self::assertSame($expected, $result);
     }
 
     public function test_null_money() : void
     {
-        $result = $this->fetchValue('SELECT NULL::money AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_custom('money'))->as('val'))->toSql());
 
         self::assertNull($result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/NumericConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/NumericConverterTest.php
index d98ba01813..d4bbc27ac4 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/NumericConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/NumericConverterTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
-use function Flow\PostgreSql\DSL\typed;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use function Flow\PostgreSql\DSL\{cast, column_type_numeric, literal, param, select, typed};
+use Flow\PostgreSql\Client\Types\ValueType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class NumericConverterTest extends ConverterTestCase
+final class NumericConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string, string}>
@@ -25,7 +26,7 @@ public static function provide_numeric_values() : \Generator
 
     public function test_null_numeric() : void
     {
-        $result = $this->fetchValue('SELECT NULL::numeric AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_numeric())->as('val'))->toSql());
 
         self::assertNull($result);
     }
@@ -33,14 +34,14 @@ public function test_null_numeric() : void
     #[DataProvider('provide_numeric_values')]
     public function test_numeric_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::numeric AS val', [typed($input, PostgreSqlType::NUMERIC)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_numeric())->as('val'))->toSql(), [typed($input, ValueType::NUMERIC)]);
 
         self::assertSame($expected, $result);
     }
 
     public function test_numeric_with_precision_and_scale() : void
     {
-        $result = $this->fetchValue('SELECT $1::numeric(10,2) AS val', [typed('1234.5678', PostgreSqlType::NUMERIC)]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_numeric(10, 2))->as('val'))->toSql(), [typed('1234.5678', ValueType::NUMERIC)]);
 
         self::assertSame('1234.57', $result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/StringConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/StringConverterTest.php
index e2167f8adb..9464729f6b 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/StringConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/StringConverterTest.php
@@ -4,9 +4,11 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
+use function Flow\PostgreSql\DSL\{cast, column_type_char, column_type_text, column_type_varchar, literal, param, select};
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class StringConverterTest extends ConverterTestCase
+final class StringConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string, string}>
@@ -45,14 +47,14 @@ public static function provide_varchar_values() : \Generator
     #[DataProvider('provide_char_values')]
     public function test_char_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::char(10) AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_char(10))->as('val'))->toSql(), [$input]);
 
         self::assertSame($expected, $result);
     }
 
     public function test_null_text() : void
     {
-        $result = $this->fetchValue('SELECT NULL::text AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_text())->as('val'))->toSql());
 
         self::assertNull($result);
     }
@@ -60,7 +62,7 @@ public function test_null_text() : void
     #[DataProvider('provide_text_values')]
     public function test_text_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::text AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_text())->as('val'))->toSql(), [$input]);
 
         self::assertSame($expected, $result);
     }
@@ -68,7 +70,7 @@ public function test_text_round_trip(string $input, string $expected) : void
     #[DataProvider('provide_varchar_values')]
     public function test_varchar_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::varchar(255) AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_varchar(255))->as('val'))->toSql(), [$input]);
 
         self::assertSame($expected, $result);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/TimeConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/TimeConverterTest.php
index 6012e9c9c2..5d3224de2a 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/TimeConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/TimeConverterTest.php
@@ -4,9 +4,11 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
+use function Flow\PostgreSql\DSL\{cast, column_type_custom, column_type_time, literal, param, select};
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class TimeConverterTest extends ConverterTestCase
+final class TimeConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string, string}>
@@ -40,7 +42,7 @@ public static function provide_timetz_values() : \Generator
 
     public function test_null_time() : void
     {
-        $result = $this->fetchValue('SELECT NULL::time AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_time())->as('val'))->toSql());
 
         self::assertNull($result);
     }
@@ -48,7 +50,7 @@ public function test_null_time() : void
     #[DataProvider('provide_time_values')]
     public function test_time_round_trip(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::time AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_time())->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
         self::assertSame($expected, $result);
@@ -57,7 +59,7 @@ public function test_time_round_trip(string $input, string $expected) : void
     #[DataProvider('provide_time_with_microseconds')]
     public function test_time_with_microseconds(string $input, string $expected) : void
     {
-        $result = $this->fetchValue('SELECT $1::time AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_time())->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
         self::assertSame($expected, $result);
@@ -66,7 +68,7 @@ public function test_time_with_microseconds(string $input, string $expected) : v
     #[DataProvider('provide_timetz_values')]
     public function test_timetz_round_trip(string $input, string $expectedTime, string $expectedOffset) : void
     {
-        $result = $this->fetchValue('SELECT $1::timetz AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_custom('timetz'))->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
         self::assertStringStartsWith($expectedTime, $result);
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/UuidConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/UuidConverterTest.php
index 752ee1d286..3d943c16bf 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/UuidConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/Client/Types/Converter/UuidConverterTest.php
@@ -4,9 +4,11 @@
 
 namespace Flow\PostgreSql\Tests\Integration\Client\Types\Converter;
 
+use function Flow\PostgreSql\DSL\{cast, column_type_uuid, func, literal, param, select};
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 use PHPUnit\Framework\Attributes\DataProvider;
 
-final class UuidConverterTest extends ConverterTestCase
+final class UuidConverterTest extends PostgreSqlTestCase
 {
     /**
      * @return \Generator<string, array{string}>
@@ -21,7 +23,7 @@ public static function provide_uuid_strings() : \Generator
 
     public function test_gen_random_uuid() : void
     {
-        $result = $this->fetchValue('SELECT gen_random_uuid() AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(func('gen_random_uuid')->as('val'))->toSql());
 
         self::assertIsString($result);
         self::assertMatchesRegularExpression(
@@ -32,7 +34,7 @@ public function test_gen_random_uuid() : void
 
     public function test_null_uuid() : void
     {
-        $result = $this->fetchValue('SELECT NULL::uuid AS val');
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(literal(null), column_type_uuid())->as('val'))->toSql());
 
         self::assertNull($result);
     }
@@ -40,7 +42,7 @@ public function test_null_uuid() : void
     #[DataProvider('provide_uuid_strings')]
     public function test_uuid_string_round_trip(string $input) : void
     {
-        $result = $this->fetchValue('SELECT $1::uuid AS val', [$input]);
+        $result = $this->pgsqlContext()->client()->fetchScalar(select(cast(param(1), column_type_uuid())->as('val'))->toSql(), [$input]);
 
         self::assertIsString($result);
         self::assertSame(\strtolower($input), $result);
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/PostgreSqlContext.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/PostgreSqlContext.php
new file mode 100644
index 0000000000..ea4232e2f2
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/PostgreSqlContext.php
@@ -0,0 +1,85 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Integration;
+
+use function Flow\PostgreSql\DSL\{drop, pgsql_client, pgsql_connection_dsn};
+
+use Flow\PostgreSql\Client\Client;
+
+final class PostgreSqlContext
+{
+    public readonly Client $client;
+
+    public function __construct()
+    {
+        $dsn = \getenv('PGSQL_DATABASE_URL');
+
+        if (!$dsn) {
+            throw new \RuntimeException('PGSQL_DATABASE_URL environment variable is not set');
+        }
+
+        $this->client = pgsql_client(pgsql_connection_dsn($dsn));
+    }
+
+    public function client() : Client
+    {
+        return $this->client;
+    }
+
+    public function close() : void
+    {
+        $this->client->close();
+    }
+
+    public function dropDomainIfExists(string $domain) : void
+    {
+        $this->client->execute(drop()->domain($domain)->ifExists()->cascade()->toSql());
+    }
+
+    public function dropFunctionIfExists(string $function) : void
+    {
+        $this->client->execute(drop()->function($function)->ifExists()->cascade()->toSql());
+    }
+
+    public function dropIndexIfExists(string $index) : void
+    {
+        $this->client->execute(drop()->index($index)->ifExists()->cascade()->toSql());
+    }
+
+    public function dropMaterializedViewIfExists(string $view) : void
+    {
+        $this->client->execute(drop()->materializedView($view)->ifExists()->cascade()->toSql());
+    }
+
+    public function dropSchemaIfExists(string $schema) : void
+    {
+        $this->client->execute(drop()->schema($schema)->ifExists()->cascade()->toSql());
+    }
+
+    public function dropSequenceIfExists(string $sequence) : void
+    {
+        $this->client->execute(drop()->sequence($sequence)->ifExists()->cascade()->toSql());
+    }
+
+    public function dropTableIfExists(string $table) : void
+    {
+        $this->client->execute(drop()->table($table)->ifExists()->cascade()->toSql());
+    }
+
+    public function dropTriggerIfExists(string $trigger, string $table) : void
+    {
+        $this->client->execute(drop()->trigger($trigger)->on($table)->ifExists()->cascade()->toSql());
+    }
+
+    public function dropTypeIfExists(string $type) : void
+    {
+        $this->client->execute(drop()->type($type)->ifExists()->cascade()->toSql());
+    }
+
+    public function dropViewIfExists(string $view) : void
+    {
+        $this->client->execute(drop()->view($view)->ifExists()->cascade()->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/PostgreSqlTestCase.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/PostgreSqlTestCase.php
new file mode 100644
index 0000000000..aebecc3c84
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/PostgreSqlTestCase.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Integration;
+
+use PHPUnit\Framework\TestCase;
+
+abstract class PostgreSqlTestCase extends TestCase
+{
+    private ?PostgreSqlContext $pgsqlContext = null;
+
+    protected function setUp() : void
+    {
+        if (!\extension_loaded('pgsql')) {
+            static::markTestSkipped('ext-pgsql is not available');
+        }
+
+        if (!\function_exists('pg_query_deparse')) {
+            static::markTestSkipped('pg_query_deparse function not available. Rebuild the pg_query extension.');
+        }
+
+        $this->pgsqlContext = new PostgreSqlContext();
+    }
+
+    protected function tearDown() : void
+    {
+        if ($this->pgsqlContext !== null) {
+            $this->pgsqlContext->close();
+            $this->pgsqlContext = null;
+        }
+    }
+
+    protected function pgsqlContext() : PostgreSqlContext
+    {
+        if ($this->pgsqlContext === null) {
+            static::fail('PostgreSqlContext not initialized. Ensure setUp() was called.');
+        }
+
+        return $this->pgsqlContext;
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Assertions/QueryBuilderAssertions.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Assertions/QueryBuilderAssertions.php
deleted file mode 100644
index 5d09a413ca..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Assertions/QueryBuilderAssertions.php
+++ /dev/null
@@ -1,1014 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder\Assertions;
-
-use function Flow\PostgreSql\DSL\sql_parse;
-use Flow\PostgreSql\{ParsedQuery, Parser};
-use Flow\PostgreSql\Protobuf\AST\{AlterDomainStmt, AlterEnumStmt, AlterExtensionContentsStmt, AlterExtensionStmt, AlterFunctionStmt, AlterObjectDependsStmt, AlterObjectSchemaStmt, AlterOwnerStmt, AlterRoleStmt, AlterSeqStmt, AlterTableStmt, CallStmt, ClusterStmt, CommentStmt, CompositeTypeStmt, CreateDomainStmt, CreateEnumStmt, CreateExtensionStmt, CreateFunctionStmt, CreateRangeStmt, CreateRoleStmt, CreateSchemaStmt, CreateSeqStmt, CreateStmt, CreateTableAsStmt, CreateTrigStmt, DeleteStmt, DiscardStmt, DoStmt, DropOwnedStmt, DropRoleStmt, DropStmt, ExplainStmt, GrantRoleStmt, GrantStmt, IndexStmt, InsertStmt, LockStmt, Node, RawStmt, ReassignOwnedStmt, RefreshMatViewStmt, ReindexStmt, RenameStmt, RuleStmt, SelectStmt, TransactionStmt, TruncateStmt, UpdateStmt, VacuumStmt, VariableSetStmt, ViewStmt};
-use Flow\PostgreSql\QueryBuilder\Delete\{DeleteBuilder, DeleteFinalStep};
-use Flow\PostgreSql\QueryBuilder\Insert\{InsertBuilder, InsertFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\AlterSequence\{AlterSequenceLoggingFinalStep, AlterSequenceOptionsStep, AlterSequenceOwnerFinalStep, AlterSequenceSchemaFinalStep, RenameSequenceFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\AlterTable\{AlterTableFinalStep, AlterTableSchemaBuilder, RenameTableBuilder};
-use Flow\PostgreSql\QueryBuilder\Schema\CreateSequence\CreateSequenceOptionsStep;
-use Flow\PostgreSql\QueryBuilder\Schema\CreateTable\CreateTableFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\CreateTableAs\CreateTableAsFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\Domain\{AlterDomainFinalStep, CreateDomainOptionsStep, DropDomainFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\DropSequence\DropSequenceFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\DropTable\DropTableFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\Extension\{AlterExtensionFinalStep, CreateExtensionOptionsStep, DropExtensionFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Function\{
-    AlterFunctionFinalStep,
-    AlterProcedureFinalStep,
-    CallFinalStep,
-    CreateFunctionFinalStep,
-    CreateProcedureFinalStep,
-    DoFinalStep,
-    DropFunctionFinalStep,
-    DropProcedureFinalStep
-};
-use Flow\PostgreSql\QueryBuilder\Schema\Grant\{GrantFinalStep, GrantRoleFinalStep, RevokeFinalStep, RevokeRoleFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Index\AlterIndex\{AlterTablespaceIndexFinalStep, RenameIndexFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Index\CreateIndex\CreateIndexFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\Index\DropIndex\DropIndexFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\Index\Reindex\ReindexFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\Ownership\{DropOwnedFinalStep, ReassignOwnedFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Role\{AlterRoleFinalStep, AlterRoleRenameFinalStep, CreateRoleFinalStep, DropRoleFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Rule\{CreateRuleFinalStep, DropRuleFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Schema\{AlterSchemaOwnerFinalStep, AlterSchemaRenameFinalStep, CreateSchemaFinalStep, DropSchemaFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Session\{ResetRoleFinalStep, SetRoleFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Trigger\{AlterTriggerFinalStep, CreateTriggerFinalStep, DropTriggerFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\Truncate\TruncateFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\Type\{AlterEnumTypeFinalStep, CreateCompositeTypeFinalStep, CreateEnumTypeFinalStep, CreateRangeTypeFinalStep, DropTypeFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\View\AlterMaterializedView\{AlterMatViewOwnerFinalStep, AlterMatViewSchemaFinalStep, AlterMatViewTablespaceFinalStep, RenameMatViewFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\View\AlterView\{AlterViewOwnerFinalStep, AlterViewSchemaFinalStep, RenameViewFinalStep};
-use Flow\PostgreSql\QueryBuilder\Schema\View\CreateMaterializedView\CreateMatViewFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\View\CreateView\CreateViewFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\View\DropMaterializedView\DropMatViewFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\View\DropView\DropViewFinalStep;
-use Flow\PostgreSql\QueryBuilder\Schema\View\RefreshMaterializedView\RefreshMatViewFinalStep;
-use Flow\PostgreSql\QueryBuilder\Select\{SelectBuilder, SelectFinalStep};
-use Flow\PostgreSql\QueryBuilder\Transaction\{
-    BeginFinalStep,
-    CommitFinalStep,
-    PreparedTransactionFinalStep,
-    RollbackFinalStep,
-    SavepointFinalStep,
-    SetTransactionFinalStep
-};
-use Flow\PostgreSql\QueryBuilder\Update\{UpdateBuilder, UpdateFinalStep};
-use Flow\PostgreSql\QueryBuilder\Utility\{AnalyzeFinalStep, ClusterFinalStep, CommentFinalStep, DiscardFinalStep, ExplainFinalStep, LockFinalStep, VacuumFinalStep};
-
-use PHPUnit\Framework\Assert;
-
-trait QueryBuilderAssertions
-{
-    protected function assertAlterDomainQuery(AlterDomainFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterDomainStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterEnumTypeQuery(AlterEnumTypeFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterEnumStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterExtensionQuery(AlterExtensionFinalStep $builder, string $expectedSql) : void
-    {
-        $ast = $builder->toAst();
-
-        if ($ast instanceof AlterExtensionStmt) {
-            $sql = $this->deparseAlterExtensionStmt($ast);
-        } else {
-            $sql = $this->deparseAlterExtensionContentsStmt($ast);
-        }
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterFunctionQuery(AlterFunctionFinalStep $builder, string $expectedSql) : void
-    {
-        $ast = $builder->toAst();
-        Assert::assertInstanceOf(AlterFunctionStmt::class, $ast);
-        $sql = $this->deparseAlterFunctionStmt($ast);
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterFunctionRenameQuery(AlterFunctionFinalStep $builder, string $expectedSql) : void
-    {
-        $ast = $builder->toAst();
-        Assert::assertInstanceOf(RenameStmt::class, $ast);
-        $sql = $this->deparseRenameStmt($ast);
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterIndexRenameQuery(RenameIndexFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseRenameStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterIndexTablespaceQuery(AlterTablespaceIndexFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterTableStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterMaterializedViewOwnerQuery(AlterMatViewOwnerFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterTableStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterMaterializedViewRenameQuery(RenameMatViewFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseRenameStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterMaterializedViewSchemaQuery(AlterMatViewSchemaFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterObjectSchemaStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterMaterializedViewTablespaceQuery(AlterMatViewTablespaceFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterTableStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterObjectSchemaQuery(AlterTableSchemaBuilder $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterObjectSchemaStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterProcedureQuery(AlterProcedureFinalStep $builder, string $expectedSql) : void
-    {
-        $ast = $builder->toAst();
-        Assert::assertInstanceOf(AlterFunctionStmt::class, $ast);
-        $sql = $this->deparseAlterFunctionStmt($ast);
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterProcedureRenameQuery(AlterProcedureFinalStep $builder, string $expectedSql) : void
-    {
-        $ast = $builder->toAst();
-        Assert::assertInstanceOf(RenameStmt::class, $ast);
-        $sql = $this->deparseRenameStmt($ast);
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterRoleQuery(AlterRoleFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterRoleStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterRoleRenameQuery(AlterRoleRenameFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseRenameStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterSchemaOwnerQuery(AlterSchemaOwnerFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterOwnerStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterSchemaRenameQuery(AlterSchemaRenameFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseRenameStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterSequenceLoggingQuery(AlterSequenceLoggingFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterTableStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterSequenceOwnerQuery(AlterSequenceOwnerFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterTableStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterSequenceQuery(AlterSequenceOptionsStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterSeqStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterSequenceRenameQuery(RenameSequenceFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseRenameStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterSequenceSchemaQuery(AlterSequenceSchemaFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterObjectSchemaStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterTableQuery(AlterTableFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterTableStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterTriggerDependsQuery(AlterTriggerFinalStep $builder, string $expectedSql) : void
-    {
-        $ast = $builder->toAst();
-        Assert::assertInstanceOf(AlterObjectDependsStmt::class, $ast);
-        $sql = $this->deparseAlterObjectDependsStmt($ast);
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterTriggerRenameQuery(AlterTriggerFinalStep $builder, string $expectedSql) : void
-    {
-        $ast = $builder->toAst();
-        Assert::assertInstanceOf(RenameStmt::class, $ast);
-        $sql = $this->deparseRenameStmt($ast);
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterViewOwnerQuery(AlterViewOwnerFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterTableStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterViewRenameQuery(RenameViewFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseRenameStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAlterViewSchemaQuery(AlterViewSchemaFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseAlterObjectSchemaStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertAnalyzeQuery(AnalyzeFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseVacuumStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCallQuery(CallFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCallStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertClusterQuery(ClusterFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseClusterStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCommentQuery(CommentFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCommentStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateCompositeTypeQuery(CreateCompositeTypeFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCompositeTypeStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateDomainQuery(CreateDomainOptionsStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateDomainStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateEnumTypeQuery(CreateEnumTypeFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateEnumStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateExtensionQuery(CreateExtensionOptionsStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateExtensionStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateFunctionQuery(CreateFunctionFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateFunctionStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateIndexQuery(CreateIndexFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseIndexStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateMaterializedViewQuery(CreateMatViewFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateTableAsStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateProcedureQuery(CreateProcedureFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateFunctionStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateRangeTypeQuery(CreateRangeTypeFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateRangeStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateRoleQuery(CreateRoleFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateRoleStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateRuleQuery(CreateRuleFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseRuleStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateSchemaQuery(CreateSchemaFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateSchemaStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateSequenceQuery(CreateSequenceOptionsStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateSeqStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateTableAsQuery(CreateTableAsFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateTableAsStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateTableQuery(CreateTableFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateTriggerQuery(CreateTriggerFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCreateTrigStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCreateViewQuery(CreateViewFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseViewStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDeleteQueryRoundTrip(DeleteFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDeleteStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-
-        $parsed = sql_parse($sql);
-        $stmts = $parsed->raw()->getStmts();
-        Assert::assertCount(1, $stmts);
-
-        $rebuiltStmt = $stmts[0]->getStmt();
-        Assert::assertNotNull($rebuiltStmt);
-
-        $deleteStmt = $rebuiltStmt->getDeleteStmt();
-        Assert::assertNotNull($deleteStmt);
-
-        $rebuilt = DeleteBuilder::fromAst($deleteStmt);
-        $rebuiltSql = $this->deparseDeleteStmt($rebuilt->toAst());
-
-        Assert::assertSame($sql, $rebuiltSql);
-    }
-
-    protected function assertDiscardQuery(DiscardFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDiscardStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDoQuery(DoFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDoStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropDomainQuery(DropDomainFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropExtensionQuery(DropExtensionFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropFunctionQuery(DropFunctionFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropIndexQuery(DropIndexFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropMaterializedViewQuery(DropMatViewFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropOwnedQuery(DropOwnedFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropOwnedStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropProcedureQuery(DropProcedureFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropRoleQuery(DropRoleFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropRoleStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropRuleQuery(DropRuleFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropSchemaQuery(DropSchemaFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropSequenceQuery(DropSequenceFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropTableQuery(DropTableFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropTriggerQuery(DropTriggerFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropTypeQuery(DropTypeFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertDropViewQuery(DropViewFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseDropStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertExplainQuery(ExplainFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseExplainStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertGrantQuery(GrantFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseGrantStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertGrantRoleQuery(GrantRoleFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseGrantRoleStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertInsertQueryRoundTrip(InsertFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseInsertStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-
-        $parsed = sql_parse($sql);
-        $stmts = $parsed->raw()->getStmts();
-        Assert::assertCount(1, $stmts);
-
-        $rebuiltStmt = $stmts[0]->getStmt();
-        Assert::assertNotNull($rebuiltStmt);
-
-        $insertStmt = $rebuiltStmt->getInsertStmt();
-        Assert::assertNotNull($insertStmt);
-
-        $rebuilt = InsertBuilder::fromAst($insertStmt);
-        $rebuiltSql = $this->deparseInsertStmt($rebuilt->toAst());
-
-        Assert::assertSame($sql, $rebuiltSql);
-    }
-
-    protected function assertLockQuery(LockFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseLockStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertReassignOwnedQuery(ReassignOwnedFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseReassignOwnedStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertRefreshMaterializedViewQuery(RefreshMatViewFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseRefreshMatViewStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertReindexQuery(ReindexFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseReindexStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertRenameQuery(RenameTableBuilder $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseRenameStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertResetRoleQuery(ResetRoleFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseVariableSetStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertRevokeQuery(RevokeFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseGrantStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertRevokeRoleQuery(RevokeRoleFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseGrantRoleStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertSelectQueryRoundTrip(SelectFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseSelectStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-
-        $parsed = sql_parse($sql);
-        $stmts = $parsed->raw()->getStmts();
-        Assert::assertCount(1, $stmts);
-
-        $rebuiltStmt = $stmts[0]->getStmt();
-        Assert::assertNotNull($rebuiltStmt);
-
-        $selectStmt = $rebuiltStmt->getSelectStmt();
-        Assert::assertNotNull($selectStmt);
-
-        $rebuilt = SelectBuilder::fromAst($selectStmt);
-        $rebuiltSql = $this->deparseSelectStmt($rebuilt->toAst());
-
-        Assert::assertSame($sql, $rebuiltSql);
-    }
-
-    protected function assertSetRoleQuery(SetRoleFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseVariableSetStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertSetTransactionQueryEquals(SetTransactionFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseVariableSetStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertTransactionQueryEquals(BeginFinalStep|CommitFinalStep|RollbackFinalStep|SavepointFinalStep|PreparedTransactionFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseTransactionStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertTruncateQuery(TruncateFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseTruncateStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertUpdateQueryRoundTrip(UpdateFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseUpdateStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-
-        $parsed = sql_parse($sql);
-        $stmts = $parsed->raw()->getStmts();
-        Assert::assertCount(1, $stmts);
-
-        $rebuiltStmt = $stmts[0]->getStmt();
-        Assert::assertNotNull($rebuiltStmt);
-
-        $updateStmt = $rebuiltStmt->getUpdateStmt();
-        Assert::assertNotNull($updateStmt);
-
-        $rebuilt = UpdateBuilder::fromAst($updateStmt);
-        $rebuiltSql = $this->deparseUpdateStmt($rebuilt->toAst());
-
-        Assert::assertSame($sql, $rebuiltSql);
-    }
-
-    protected function assertVacuumQuery(VacuumFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseVacuumStmt($builder->toAst());
-
-        Assert::assertSame($expectedSql, $sql);
-    }
-
-    protected function deparseAlterDomainStmt(AlterDomainStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_domain_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterEnumStmt(AlterEnumStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_enum_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterExtensionContentsStmt(AlterExtensionContentsStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_extension_contents_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterExtensionStmt(AlterExtensionStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_extension_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterFunctionStmt(AlterFunctionStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_function_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterObjectDependsStmt(AlterObjectDependsStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_object_depends_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterObjectSchemaStmt(AlterObjectSchemaStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_object_schema_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterOwnerStmt(AlterOwnerStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_owner_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterRoleStmt(AlterRoleStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_role_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterSeqStmt(AlterSeqStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_seq_stmt' => $stmt]));
-    }
-
-    protected function deparseAlterTableStmt(AlterTableStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['alter_table_stmt' => $stmt]));
-    }
-
-    protected function deparseCallStmt(CallStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['call_stmt' => $stmt]));
-    }
-
-    protected function deparseClusterStmt(ClusterStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['cluster_stmt' => $stmt]));
-    }
-
-    protected function deparseCommentStmt(CommentStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['comment_stmt' => $stmt]));
-    }
-
-    protected function deparseCompositeTypeStmt(CompositeTypeStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['composite_type_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateDomainStmt(CreateDomainStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_domain_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateEnumStmt(CreateEnumStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_enum_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateExtensionStmt(CreateExtensionStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_extension_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateFunctionStmt(CreateFunctionStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_function_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateRangeStmt(CreateRangeStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_range_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateRoleStmt(CreateRoleStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_role_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateSchemaStmt(CreateSchemaStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_schema_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateSeqStmt(CreateSeqStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_seq_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateStmt(CreateStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateTableAsStmt(CreateTableAsStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_table_as_stmt' => $stmt]));
-    }
-
-    protected function deparseCreateTrigStmt(CreateTrigStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['create_trig_stmt' => $stmt]));
-    }
-
-    protected function deparseDeleteStmt(DeleteStmt $deleteStmt) : string
-    {
-        return $this->deparseNode(new Node(['delete_stmt' => $deleteStmt]));
-    }
-
-    protected function deparseDiscardStmt(DiscardStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['discard_stmt' => $stmt]));
-    }
-
-    protected function deparseDoStmt(DoStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['do_stmt' => $stmt]));
-    }
-
-    protected function deparseDropOwnedStmt(DropOwnedStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['drop_owned_stmt' => $stmt]));
-    }
-
-    protected function deparseDropRoleStmt(DropRoleStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['drop_role_stmt' => $stmt]));
-    }
-
-    protected function deparseDropStmt(DropStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['drop_stmt' => $stmt]));
-    }
-
-    protected function deparseExplainStmt(ExplainStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['explain_stmt' => $stmt]));
-    }
-
-    protected function deparseGrantRoleStmt(GrantRoleStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['grant_role_stmt' => $stmt]));
-    }
-
-    protected function deparseGrantStmt(GrantStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['grant_stmt' => $stmt]));
-    }
-
-    protected function deparseIndexStmt(IndexStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['index_stmt' => $stmt]));
-    }
-
-    protected function deparseInsertStmt(InsertStmt $insertStmt) : string
-    {
-        return $this->deparseNode(new Node(['insert_stmt' => $insertStmt]));
-    }
-
-    protected function deparseLockStmt(LockStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['lock_stmt' => $stmt]));
-    }
-
-    protected function deparseReassignOwnedStmt(ReassignOwnedStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['reassign_owned_stmt' => $stmt]));
-    }
-
-    protected function deparseRefreshMatViewStmt(RefreshMatViewStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['refresh_mat_view_stmt' => $stmt]));
-    }
-
-    protected function deparseReindexStmt(ReindexStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['reindex_stmt' => $stmt]));
-    }
-
-    protected function deparseRenameStmt(RenameStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['rename_stmt' => $stmt]));
-    }
-
-    protected function deparseRuleStmt(RuleStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['rule_stmt' => $stmt]));
-    }
-
-    protected function deparseSelectStmt(SelectStmt $selectStmt) : string
-    {
-        return $this->deparseNode(new Node(['select_stmt' => $selectStmt]));
-    }
-
-    protected function deparseTransactionStmt(TransactionStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['transaction_stmt' => $stmt]));
-    }
-
-    protected function deparseTruncateStmt(TruncateStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['truncate_stmt' => $stmt]));
-    }
-
-    protected function deparseUpdateStmt(UpdateStmt $updateStmt) : string
-    {
-        return $this->deparseNode(new Node(['update_stmt' => $updateStmt]));
-    }
-
-    protected function deparseVacuumStmt(VacuumStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['vacuum_stmt' => $stmt]));
-    }
-
-    protected function deparseVariableSetStmt(VariableSetStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['variable_set_stmt' => $stmt]));
-    }
-
-    protected function deparseViewStmt(ViewStmt $stmt) : string
-    {
-        return $this->deparseNode(new Node(['view_stmt' => $stmt]));
-    }
-
-    private function deparseNode(Node $node) : string
-    {
-        $parser = new Parser();
-        $rawStmt = new RawStmt(['stmt' => $node]);
-        $parsed = $parser->parse('SELECT 1');
-        $parseResult = $parsed->raw();
-        $parseResult->setStmts([$rawStmt]);
-
-        return (new ParsedQuery($parseResult))->deparse();
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DatabaseTestCase.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DatabaseTestCase.php
deleted file mode 100644
index df7d8dd9a8..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DatabaseTestCase.php
+++ /dev/null
@@ -1,134 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder\Database;
-
-use function Flow\PostgreSql\DSL\drop;
-use PgSql\{Connection, Result};
-use PHPUnit\Framework\TestCase;
-
-abstract class DatabaseTestCase extends TestCase
-{
-    protected ?Connection $connection = null;
-
-    protected function setUp() : void
-    {
-        if (!\extension_loaded('pgsql')) {
-            static::markTestSkipped('ext-pgsql is not available');
-        }
-
-        if (!\function_exists('pg_query_deparse')) {
-            static::markTestSkipped('pg_query_deparse function not available. Rebuild the pg_query extension.');
-        }
-
-        $dsn = \getenv('PGSQL_DATABASE_URL');
-
-        if (!$dsn) {
-            static::markTestSkipped('PGSQL_DATABASE_URL environment variable is not set');
-        }
-
-        $this->connection = $this->connect($dsn);
-    }
-
-    protected function tearDown() : void
-    {
-        if ($this->connection !== null) {
-            \pg_close($this->connection);
-            $this->connection = null;
-        }
-    }
-
-    protected function affectedRows(Result $result) : int
-    {
-        return \pg_affected_rows($result);
-    }
-
-    protected function connect(string $dsn) : Connection
-    {
-        $parts = \parse_url($dsn);
-
-        if ($parts === false) {
-            static::fail('Failed to parse PGSQL_DATABASE_URL');
-        }
-
-        $connString = \sprintf(
-            "host='%s' port='%s' dbname='%s' user='%s' password='%s'",
-            $parts['host'] ?? 'localhost',
-            $parts['port'] ?? '5432',
-            \ltrim($parts['path'] ?? '/postgres', '/'),
-            $parts['user'] ?? 'postgres',
-            $parts['pass'] ?? ''
-        );
-
-        $conn = \pg_connect($connString);
-
-        if ($conn === false) {
-            static::fail('Failed to connect to PostgreSQL');
-        }
-
-        return $conn;
-    }
-
-    protected function dropIndexIfExists(string $index) : void
-    {
-        $this->execute(drop()->index($index)->ifExists()->cascade()->toSql());
-    }
-
-    protected function dropMaterializedViewIfExists(string $view) : void
-    {
-        $this->execute(drop()->materializedView($view)->ifExists()->cascade()->toSql());
-    }
-
-    protected function dropSequenceIfExists(string $sequence) : void
-    {
-        $this->execute(drop()->sequence($sequence)->ifExists()->cascade()->toSql());
-    }
-
-    protected function dropTableIfExists(string $table) : void
-    {
-        $this->execute(drop()->table($table)->ifExists()->cascade()->toSql());
-    }
-
-    protected function dropViewIfExists(string $view) : void
-    {
-        $this->execute(drop()->view($view)->ifExists()->cascade()->toSql());
-    }
-
-    protected function execute(string $sql) : Result|false
-    {
-        if ($this->connection === null) {
-            static::fail('No database connection');
-        }
-
-        return \pg_query($this->connection, $sql);
-    }
-
-    /**
-     * Fetch all rows from a result. Asserts result is valid.
-     *
-     * @return array<int, array<string, null|string>>
-     */
-    protected function fetchAll(Result|false $result) : array
-    {
-        static::assertNotFalse($result, 'Query failed');
-
-        return \pg_fetch_all($result) ?: [];
-    }
-
-    /**
-     * Fetch one row from a result. Asserts result is valid.
-     *
-     * @return array<string, null|string>
-     */
-    protected function fetchOne(Result|false $result) : array
-    {
-        static::assertNotFalse($result, 'Query failed');
-
-        $row = \pg_fetch_assoc($result);
-        static::assertIsArray($row, 'No row returned');
-
-        /** @var array<string, null|string> $row */
-        return $row;
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DeleteDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DeleteDatabaseTest.php
index ae80cd3766..7cc00d2f56 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DeleteDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DeleteDatabaseTest.php
@@ -8,24 +8,25 @@
     agg_count,
     col,
     column,
-    cond_or,
+    column_type_integer,
+    column_type_serial,
+    column_type_text,
+    column_type_timestamp,
+    column_type_varchar,
     create,
-    data_type_integer,
-    data_type_serial,
-    data_type_text,
-    data_type_timestamp,
-    data_type_varchar,
     delete,
     eq,
     insert,
     literal,
+    or_,
     primary_key,
     select,
     star,
     table
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class DeleteDatabaseTest extends DatabaseTestCase
+final class DeleteDatabaseTest extends PostgreSqlTestCase
 {
     private const SCHEMA_NAME = 'flow_postgres_test_delete_schema';
 
@@ -39,25 +40,25 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_LOGS)
-                ->column(column('id', data_type_serial()))
-                ->column(column('level', data_type_varchar(20))->notNull())
-                ->column(column('message', data_type_text()))
-                ->column(column('created_at', data_type_timestamp()))
+                ->column(column('id', column_type_serial()))
+                ->column(column('level', column_type_varchar(20))->notNull())
+                ->column(column('message', column_type_text()))
+                ->column(column('created_at', column_type_timestamp()))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_ARCHIVE)
-                ->column(column('id', data_type_serial()))
-                ->column(column('log_id', data_type_integer())->notNull())
+                ->column(column('id', column_type_serial()))
+                ->column(column('log_id', column_type_integer())->notNull())
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_LOGS)
                 ->columns('level', 'message')
@@ -69,7 +70,7 @@ protected function setUp() : void
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_ARCHIVE)
                 ->columns('log_id')
@@ -81,9 +82,9 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropTableIfExists(self::TABLE_ARCHIVE);
-        $this->dropTableIfExists(self::TABLE_LOGS);
-        $this->execute('DROP SCHEMA IF EXISTS ' . self::SCHEMA_NAME . ' CASCADE');
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_ARCHIVE);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_LOGS);
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA_NAME);
 
         parent::tearDown();
     }
@@ -93,18 +94,14 @@ public function test_delete_all() : void
         $query = delete()
             ->from(self::TABLE_ARCHIVE);
 
-        $result = $this->execute($query->toSql());
+        self::assertSame(2, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        self::assertNotFalse($result);
-        self::assertSame(2, $this->affectedRows($result));
-
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(agg_count(star())->as('cnt'))
                 ->from(table(self::TABLE_ARCHIVE))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
-        self::assertSame('0', $row['cnt']);
+        self::assertSame(0, $row['cnt']);
     }
 
     public function test_delete_with_multiple_conditions() : void
@@ -112,16 +109,13 @@ public function test_delete_with_multiple_conditions() : void
         $query = delete()
             ->from(self::TABLE_LOGS)
             ->where(
-                cond_or(
+                or_(
                     eq(col('level'), literal('INFO')),
                     eq(col('level'), literal('WARNING'))
                 )
             );
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(2, $this->affectedRows($result));
+        self::assertSame(2, $this->pgsqlContext()->client()->execute($query->toSql()));
     }
 
     public function test_delete_with_returning() : void
@@ -131,17 +125,15 @@ public function test_delete_with_returning() : void
             ->where(eq(col('level'), literal('ERROR')))
             ->returning(col('id'), col('level'), col('message'));
 
-        $result = $this->execute($query->toSql());
+        $row = $this->pgsqlContext()->client()->fetchOne($query->toSql());
 
-        self::assertNotFalse($result);
-        $row = $this->fetchOne($result);
         self::assertSame('ERROR', $row['level']);
         self::assertSame('Error occurred', $row['message']);
     }
 
     public function test_delete_with_returning_all() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_LOGS)
                 ->columns('level', 'message')
@@ -154,10 +146,8 @@ public function test_delete_with_returning_all() : void
             ->where(eq(col('level'), literal('TRACE')))
             ->returningAll();
 
-        $result = $this->execute($query->toSql());
+        $row = $this->pgsqlContext()->client()->fetchOne($query->toSql());
 
-        self::assertNotFalse($result);
-        $row = $this->fetchOne($result);
         self::assertArrayHasKey('id', $row);
         self::assertArrayHasKey('level', $row);
         self::assertArrayHasKey('message', $row);
@@ -166,18 +156,18 @@ public function test_delete_with_returning_all() : void
 
     public function test_delete_with_schema_qualified_table() : void
     {
-        $this->execute('CREATE SCHEMA IF NOT EXISTS ' . self::SCHEMA_NAME);
+        $this->pgsqlContext()->client()->execute('CREATE SCHEMA IF NOT EXISTS ' . self::SCHEMA_NAME);
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::SCHEMA_TABLE, self::SCHEMA_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('level', data_type_varchar(20))->notNull())
-                ->column(column('message', data_type_text()))
+                ->column(column('id', column_type_serial()))
+                ->column(column('level', column_type_varchar(20))->notNull())
+                ->column(column('message', column_type_text()))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::SCHEMA_NAME . '.' . self::SCHEMA_TABLE)
                 ->columns('level', 'message')
@@ -190,18 +180,14 @@ public function test_delete_with_schema_qualified_table() : void
             ->from(self::SCHEMA_NAME . '.' . self::SCHEMA_TABLE)
             ->where(eq(col('level'), literal('DEBUG')));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(1, $this->affectedRows($result));
+        self::assertSame(1, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(agg_count(star())->as('cnt'))
                 ->from(table(self::SCHEMA_TABLE, self::SCHEMA_NAME))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
-        self::assertSame('1', $row['cnt']);
+        self::assertSame(1, $row['cnt']);
     }
 
     public function test_delete_with_using() : void
@@ -216,10 +202,7 @@ public function test_delete_with_using() : void
                 )
             );
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(2, $this->affectedRows($result));
+        self::assertSame(2, $this->pgsqlContext()->client()->execute($query->toSql()));
     }
 
     public function test_delete_with_where() : void
@@ -228,18 +211,14 @@ public function test_delete_with_where() : void
             ->from(self::TABLE_LOGS)
             ->where(eq(col('level'), literal('DEBUG')));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(2, $this->affectedRows($result));
+        self::assertSame(2, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(agg_count(star())->as('cnt'))
                 ->from(table(self::TABLE_LOGS))
                 ->where(eq(col('level'), literal('DEBUG')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
-        self::assertSame('0', $row['cnt']);
+        self::assertSame(0, $row['cnt']);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DomainDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DomainDatabaseTest.php
index cf59bc8bb4..034cf5ac8d 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DomainDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/DomainDatabaseTest.php
@@ -6,10 +6,12 @@
 
 use function Flow\PostgreSql\DSL\{
     alter,
+    col,
     column,
+    column_type_serial,
     create,
-    data_type_serial,
     drop,
+    gt,
     insert,
     literal,
     primary_key,
@@ -18,9 +20,11 @@
     table
 };
 
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Condition\OperatorCondition;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class DomainDatabaseTest extends DatabaseTestCase
+final class DomainDatabaseTest extends PostgreSqlTestCase
 {
     private const DOMAIN_NAME = 'flow_postgres_email_domain';
 
@@ -30,150 +34,149 @@ final class DomainDatabaseTest extends DatabaseTestCase
 
     protected function tearDown() : void
     {
-        $this->dropTableIfExists(self::TABLE_NAME);
-        $this->dropDomainIfExists(self::DOMAIN_NAME);
-        $this->dropDomainIfExists(self::DOMAIN_NAME_2);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_NAME);
+        $this->pgsqlContext()->dropDomainIfExists(self::DOMAIN_NAME);
+        $this->pgsqlContext()->dropDomainIfExists(self::DOMAIN_NAME_2);
 
         parent::tearDown();
     }
 
     public function test_alter_domain_add_constraint() : void
     {
-        $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME_2)
-                ->as(DataType::integer())
+                ->as(ColumnType::integer())
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->domain(self::DOMAIN_NAME_2)
-                ->addConstraint('positive_check', 'VALUE > 0')
+                ->addConstraint('positive_check', gt(col('value'), literal(0)))
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_alter_domain_drop_constraint() : void
     {
-        $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME_2)
-                ->as(DataType::integer())
+                ->as(ColumnType::integer())
                 ->constraint('positive_check')
-                ->check('VALUE > 0')
+                ->check(gt(col('value'), literal(0)))
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->domain(self::DOMAIN_NAME_2)
                 ->dropConstraint('positive_check')
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_alter_domain_drop_default() : void
     {
-        $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME_2)
-                ->as(DataType::integer())
-                ->default('0')
+                ->as(ColumnType::integer())
+                ->default(literal(0))
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->domain(self::DOMAIN_NAME_2)
                 ->dropDefault()
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_alter_domain_drop_not_null() : void
     {
-        $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME_2)
-                ->as(DataType::integer())
+                ->as(ColumnType::integer())
                 ->notNull()
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->domain(self::DOMAIN_NAME_2)
                 ->dropNotNull()
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_alter_domain_set_default() : void
     {
-        $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME_2)
-                ->as(DataType::integer())
+                ->as(ColumnType::integer())
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->domain(self::DOMAIN_NAME_2)
-                ->setDefault('100')
+                ->setDefault(literal(100))
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_alter_domain_set_not_null() : void
     {
-        $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME_2)
-                ->as(DataType::integer())
+                ->as(ColumnType::integer())
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->domain(self::DOMAIN_NAME_2)
                 ->setNotNull()
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_create_domain() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME)
-                ->as(DataType::varchar(255))
+                ->as(ColumnType::varchar(255))
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->domainExists(self::DOMAIN_NAME));
     }
 
     public function test_create_domain_and_use_in_table() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME)
-                ->as(DataType::varchar(255))
+                ->as(ColumnType::varchar(255))
                 ->constraint('valid_email')
-                ->check("VALUE ~ '^[^@]+@[^@]+\\.[^@]+$'")
+                ->check(new OperatorCondition(col('value'), '~', literal('^[^@]+@[^@]+\\.[^@]+$')))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('email', DataType::custom(self::DOMAIN_NAME))->notNull())
+                ->column(column('id', column_type_serial()))
+                ->column(column('email', ColumnType::custom(self::DOMAIN_NAME))->notNull())
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_NAME)
                 ->columns('email')
@@ -181,10 +184,8 @@ public function test_create_domain_and_use_in_table() : void
                 ->toSql()
         );
 
-        $row = $this->fetchOne(
-            $this->execute(
-                select(star())->from(table(self::TABLE_NAME))->toSql()
-            )
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(star())->from(table(self::TABLE_NAME))->toSql()
         );
 
         self::assertSame('test@example.com', $row['email']);
@@ -192,113 +193,101 @@ public function test_create_domain_and_use_in_table() : void
 
     public function test_create_domain_with_check_constraint() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME)
-                ->as(DataType::varchar(255))
+                ->as(ColumnType::varchar(255))
                 ->constraint('valid_email')
-                ->check("VALUE ~ '^[^@]+@[^@]+\\.[^@]+$'")
+                ->check(new OperatorCondition(col('value'), '~', literal('^[^@]+@[^@]+\\.[^@]+$')))
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->domainExists(self::DOMAIN_NAME));
     }
 
     public function test_create_domain_with_default() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME_2)
-                ->as(DataType::integer())
-                ->default('0')
+                ->as(ColumnType::integer())
+                ->default(literal(0))
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->domainExists(self::DOMAIN_NAME_2));
     }
 
     public function test_create_domain_with_not_null() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME)
-                ->as(DataType::varchar(255))
+                ->as(ColumnType::varchar(255))
                 ->notNull()
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->domainExists(self::DOMAIN_NAME));
     }
 
     public function test_drop_domain() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME)
-                ->as(DataType::varchar(255))
+                ->as(ColumnType::varchar(255))
                 ->toSql()
         );
 
         self::assertTrue($this->domainExists(self::DOMAIN_NAME));
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->domain(self::DOMAIN_NAME)->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->domainExists(self::DOMAIN_NAME));
     }
 
     public function test_drop_domain_cascade() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->domain(self::DOMAIN_NAME)
-                ->as(DataType::varchar(255))
+                ->as(ColumnType::varchar(255))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('email', DataType::custom(self::DOMAIN_NAME)))
+                ->column(column('id', column_type_serial()))
+                ->column(column('email', ColumnType::custom(self::DOMAIN_NAME)))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->domain(self::DOMAIN_NAME)->cascade()->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->domainExists(self::DOMAIN_NAME));
     }
 
     public function test_drop_domain_if_exists() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             drop()->domain(self::DOMAIN_NAME)->ifExists()->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
-    protected function domainExists(string $name) : bool
+    private function domainExists(string $name) : bool
     {
-        $row = $this->fetchOne(
-            $this->execute(
-                "SELECT EXISTS(
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            "SELECT EXISTS(
                     SELECT 1 FROM pg_type t
                     JOIN pg_namespace n ON t.typnamespace = n.oid
                     WHERE t.typname = '{$name}'
                     AND t.typtype = 'd'
                 ) AS domain_exists"
-            )
         );
 
-        return $row['domain_exists'] === 't';
-    }
-
-    protected function dropDomainIfExists(string $name) : void
-    {
-        $this->execute("DROP DOMAIN IF EXISTS {$name} CASCADE");
+        return $row['domain_exists'] === true;
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/FunctionDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/FunctionDatabaseTest.php
index e57f6b5181..41ab56ba53 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/FunctionDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/FunctionDatabaseTest.php
@@ -5,15 +5,23 @@
 namespace Flow\PostgreSql\Tests\Integration\QueryBuilder\Database;
 
 use function Flow\PostgreSql\DSL\{
+    agg_count,
     alter,
+    col,
+    column_type_integer,
     create,
-    data_type_integer,
     drop,
-    func_arg
+    eq,
+    func,
+    func_arg,
+    literal,
+    select,
+    table
 };
 use Flow\PostgreSql\QueryBuilder\Schema\Function\ParallelSafety;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class FunctionDatabaseTest extends DatabaseTestCase
+final class FunctionDatabaseTest extends PostgreSqlTestCase
 {
     private const FUNCTION_NAME = 'flow_postgres_test_func';
 
@@ -23,61 +31,59 @@ final class FunctionDatabaseTest extends DatabaseTestCase
 
     protected function tearDown() : void
     {
-        $this->dropFunctionIfExists(self::FUNCTION_NAME);
-        $this->dropFunctionIfExists(self::FUNCTION_NAME_2);
-        $this->dropFunctionIfExists(self::FUNCTION_NAME_RENAMED);
+        $this->pgsqlContext()->dropFunctionIfExists(self::FUNCTION_NAME);
+        $this->pgsqlContext()->dropFunctionIfExists(self::FUNCTION_NAME_2);
+        $this->pgsqlContext()->dropFunctionIfExists(self::FUNCTION_NAME_RENAMED);
 
         parent::tearDown();
     }
 
     public function test_alter_function_rename() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments()
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->as('SELECT 42')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->function(self::FUNCTION_NAME)
                 ->arguments()
                 ->renameTo(self::FUNCTION_NAME_RENAMED)
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->functionExists(self::FUNCTION_NAME));
         self::assertTrue($this->functionExists(self::FUNCTION_NAME_RENAMED));
     }
 
     public function test_alter_function_set_volatility() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments()
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->as('SELECT 42')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->function(self::FUNCTION_NAME)
                 ->arguments()
                 ->immutable()
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->functionExists(self::FUNCTION_NAME));
     }
 
     public function test_create_function_returns_void() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments()
                 ->returnsVoid()
@@ -86,140 +92,143 @@ public function test_create_function_returns_void() : void
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->functionExists(self::FUNCTION_NAME));
     }
 
     public function test_create_function_with_arguments() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments(
-                    func_arg(data_type_integer())->named('a'),
-                    func_arg(data_type_integer())->named('b')
+                    func_arg(column_type_integer())->named('a'),
+                    func_arg(column_type_integer())->named('b')
                 )
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->as('SELECT a + b')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->functionExists(self::FUNCTION_NAME));
 
-        $row = $this->fetchOne($this->execute('SELECT ' . self::FUNCTION_NAME . '(10, 5) AS result'));
-        self::assertSame('15', $row['result']);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(func(self::FUNCTION_NAME, [literal(10), literal(5)])->as('result'))->toSql()
+        );
+        self::assertSame(15, $row['result']);
     }
 
     public function test_create_function_with_default_argument() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments(
-                    func_arg(data_type_integer())->named('a'),
-                    func_arg(data_type_integer())->named('b')->default('10')
+                    func_arg(column_type_integer())->named('a'),
+                    func_arg(column_type_integer())->named('b')->default('10')
                 )
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->as('SELECT a + b')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $row = $this->fetchOne($this->execute('SELECT ' . self::FUNCTION_NAME . '(5) AS result'));
-        self::assertSame('15', $row['result']);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(func(self::FUNCTION_NAME, [literal(5)])->as('result'))->toSql()
+        );
+        self::assertSame(15, $row['result']);
 
-        $row = $this->fetchOne($this->execute('SELECT ' . self::FUNCTION_NAME . '(5, 3) AS result'));
-        self::assertSame('8', $row['result']);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(func(self::FUNCTION_NAME, [literal(5), literal(3)])->as('result'))->toSql()
+        );
+        self::assertSame(8, $row['result']);
     }
 
     public function test_create_function_with_parallel_safety() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments()
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->parallel(ParallelSafety::SAFE)
                 ->as('SELECT 42')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->functionExists(self::FUNCTION_NAME));
     }
 
     public function test_create_function_with_volatility() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments()
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->immutable()
                 ->as('SELECT 42')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->functionExists(self::FUNCTION_NAME));
     }
 
     public function test_create_or_replace_function() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments()
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->as('SELECT 1')
                 ->toSql()
         );
 
-        $row = $this->fetchOne($this->execute('SELECT ' . self::FUNCTION_NAME . '() AS result'));
-        self::assertSame('1', $row['result']);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(func(self::FUNCTION_NAME)->as('result'))->toSql()
+        );
+        self::assertSame(1, $row['result']);
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->orReplace()
                 ->arguments()
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->as('SELECT 2')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $row = $this->fetchOne($this->execute('SELECT ' . self::FUNCTION_NAME . '() AS result'));
-        self::assertSame('2', $row['result']);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(func(self::FUNCTION_NAME)->as('result'))->toSql()
+        );
+        self::assertSame(2, $row['result']);
     }
 
     public function test_create_simple_function() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments()
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->as('SELECT 42')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->functionExists(self::FUNCTION_NAME));
 
-        $row = $this->fetchOne($this->execute('SELECT ' . self::FUNCTION_NAME . '() AS result'));
-        self::assertSame('42', $row['result']);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(func(self::FUNCTION_NAME)->as('result'))->toSql()
+        );
+        self::assertSame(42, $row['result']);
     }
 
     public function test_drop_function() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments()
-                ->returns(data_type_integer())
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->as('SELECT 42')
                 ->toSql()
@@ -227,55 +236,51 @@ public function test_drop_function() : void
 
         self::assertTrue($this->functionExists(self::FUNCTION_NAME));
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->function(self::FUNCTION_NAME)->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->functionExists(self::FUNCTION_NAME));
     }
 
     public function test_drop_function_if_exists() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             drop()->function(self::FUNCTION_NAME)->ifExists()->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_drop_function_with_arguments() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
-                ->arguments(func_arg(data_type_integer())->named('a'))
-                ->returns(data_type_integer())
+                ->arguments(func_arg(column_type_integer())->named('a'))
+                ->returns(column_type_integer())
                 ->language('sql')
                 ->as('SELECT a * 2')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->function(self::FUNCTION_NAME)
-                ->arguments(func_arg(data_type_integer()))
+                ->arguments(func_arg(column_type_integer()))
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->functionExists(self::FUNCTION_NAME));
     }
 
-    protected function dropFunctionIfExists(string $name) : void
-    {
-        $this->execute("DROP FUNCTION IF EXISTS {$name} CASCADE");
-    }
-
     protected function functionExists(string $name) : bool
     {
-        $row = $this->fetchOne(
-            $this->execute("SELECT EXISTS(SELECT 1 FROM pg_proc WHERE proname = '{$name}') AS func_exists")
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count()->as('cnt'))
+                ->from(table('pg_proc'))
+                ->where(eq(col('proname'), literal($name)))
+                ->toSql()
         );
 
-        return $row['func_exists'] === 't';
+        return $row['cnt'] > 0;
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/IndexDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/IndexDatabaseTest.php
index cb55a13092..446c35f44e 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/IndexDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/IndexDatabaseTest.php
@@ -8,10 +8,10 @@
     agg_count,
     col,
     column,
+    column_type_integer,
+    column_type_serial,
+    column_type_varchar,
     create,
-    data_type_integer,
-    data_type_serial,
-    data_type_varchar,
     drop,
     eq,
     index_col,
@@ -23,8 +23,10 @@
     star,
     table
 };
+use Flow\PostgreSql\Client\Exception\QueryException;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class IndexDatabaseTest extends DatabaseTestCase
+final class IndexDatabaseTest extends PostgreSqlTestCase
 {
     private const INDEX_COMPOSITE = 'flow_postgres_idx_composite';
 
@@ -39,14 +41,14 @@ protected function setUp() : void
         parent::setUp();
 
         $query = create()->table(self::TABLE_INDEXED)
-            ->column(column('id', data_type_serial()))
-            ->column(column('name', data_type_varchar(100)))
-            ->column(column('email', data_type_varchar(255)))
-            ->column(column('age', data_type_integer()));
+            ->column(column('id', column_type_serial()))
+            ->column(column('name', column_type_varchar(100)))
+            ->column(column('email', column_type_varchar(255)))
+            ->column(column('age', column_type_integer()));
 
-        $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_INDEXED)
                 ->columns('name', 'email', 'age')
@@ -57,10 +59,10 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropIndexIfExists(self::INDEX_NAME);
-        $this->dropIndexIfExists(self::INDEX_EMAIL);
-        $this->dropIndexIfExists(self::INDEX_COMPOSITE);
-        $this->dropTableIfExists(self::TABLE_INDEXED);
+        $this->pgsqlContext()->dropIndexIfExists(self::INDEX_NAME);
+        $this->pgsqlContext()->dropIndexIfExists(self::INDEX_EMAIL);
+        $this->pgsqlContext()->dropIndexIfExists(self::INDEX_COMPOSITE);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_INDEXED);
 
         parent::tearDown();
     }
@@ -71,9 +73,15 @@ public function test_create_composite_index() : void
             ->on(self::TABLE_INDEXED)
             ->columns(index_col('name'), index_col('email'));
 
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count(star())->as('cnt'))
+                ->from(table('pg_indexes'))
+                ->where(eq(col('indexname'), literal(self::INDEX_COMPOSITE)))
+                ->toSql()
+        );
+        self::assertSame(1, (int) $row['cnt']);
     }
 
     public function test_create_index() : void
@@ -82,11 +90,9 @@ public function test_create_index() : void
             ->on(self::TABLE_INDEXED)
             ->columns(index_col('name'));
 
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
-
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(agg_count(star())->as('cnt'))
                 ->from(table('pg_indexes'))
                 ->where(
@@ -94,7 +100,6 @@ public function test_create_index() : void
                 )
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertGreaterThanOrEqual(1, (int) $row['cnt']);
     }
 
@@ -105,10 +110,16 @@ public function test_create_index_if_not_exists() : void
             ->on(self::TABLE_INDEXED)
             ->columns(index_col('name'));
 
-        $this->execute($query->toSql());
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count(star())->as('cnt'))
+                ->from(table('pg_indexes'))
+                ->where(eq(col('indexname'), literal(self::INDEX_NAME)))
+                ->toSql()
+        );
+        self::assertSame(1, (int) $row['cnt']);
     }
 
     public function test_create_index_with_btree_method() : void
@@ -118,9 +129,15 @@ public function test_create_index_with_btree_method() : void
             ->using(index_method_btree())
             ->columns(index_col('name'));
 
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count(star())->as('cnt'))
+                ->from(table('pg_indexes'))
+                ->where(eq(col('indexname'), literal(self::INDEX_NAME)))
+                ->toSql()
+        );
+        self::assertSame(1, (int) $row['cnt']);
     }
 
     public function test_create_index_with_hash_method() : void
@@ -130,9 +147,15 @@ public function test_create_index_with_hash_method() : void
             ->using(index_method_hash())
             ->columns(index_col('name'));
 
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count(star())->as('cnt'))
+                ->from(table('pg_indexes'))
+                ->where(eq(col('indexname'), literal(self::INDEX_NAME)))
+                ->toSql()
+        );
+        self::assertSame(1, (int) $row['cnt']);
     }
 
     public function test_create_unique_index() : void
@@ -142,18 +165,16 @@ public function test_create_unique_index() : void
             ->on(self::TABLE_INDEXED)
             ->columns(index_col('email'));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $duplicateResult = @$this->execute(
+        $this->expectException(QueryException::class);
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_INDEXED)
                 ->columns('name', 'email', 'age')
                 ->values(literal('Test2'), literal('test@example.com'), literal(25))
                 ->toSql()
         );
-        self::assertFalse($duplicateResult);
     }
 
     public function test_drop_index() : void
@@ -161,21 +182,31 @@ public function test_drop_index() : void
         $createQuery = create()->index(self::INDEX_NAME)
             ->on(self::TABLE_INDEXED)
             ->columns(index_col('name'));
-        $this->execute($createQuery->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
         $dropQuery = drop()->index(self::INDEX_NAME);
+        $this->pgsqlContext()->client()->execute($dropQuery->toSql());
 
-        $result = $this->execute($dropQuery->toSql());
-
-        self::assertNotFalse($result);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count(star())->as('cnt'))
+                ->from(table('pg_indexes'))
+                ->where(eq(col('indexname'), literal(self::INDEX_NAME)))
+                ->toSql()
+        );
+        self::assertSame(0, (int) $row['cnt']);
     }
 
     public function test_drop_index_if_exists() : void
     {
         $dropQuery = drop()->index(self::INDEX_NAME)->ifExists();
+        $this->pgsqlContext()->client()->execute($dropQuery->toSql());
 
-        $result = $this->execute($dropQuery->toSql());
-
-        self::assertNotFalse($result);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count(star())->as('cnt'))
+                ->from(table('pg_indexes'))
+                ->where(eq(col('indexname'), literal(self::INDEX_NAME)))
+                ->toSql()
+        );
+        self::assertSame(0, (int) $row['cnt']);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/InsertDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/InsertDatabaseTest.php
index 8ed439f80c..f3b30a8155 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/InsertDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/InsertDatabaseTest.php
@@ -7,12 +7,12 @@
 use function Flow\PostgreSql\DSL\{
     col,
     column,
+    column_type_decimal,
+    column_type_integer,
+    column_type_serial,
+    column_type_varchar,
     conflict_columns,
     create,
-    data_type_decimal,
-    data_type_integer,
-    data_type_serial,
-    data_type_varchar,
     eq,
     insert,
     literal,
@@ -23,8 +23,9 @@
     table,
     unique_constraint
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class InsertDatabaseTest extends DatabaseTestCase
+final class InsertDatabaseTest extends PostgreSqlTestCase
 {
     private const SCHEMA_NAME = 'flow_postgres_test_insert_schema';
 
@@ -36,13 +37,13 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_PRODUCTS)
-                ->column(column('id', data_type_serial()))
-                ->column(column('sku', data_type_varchar(50))->notNull())
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('price', data_type_decimal(10, 2))->default(0))
-                ->column(column('stock', data_type_integer())->default(0))
+                ->column(column('id', column_type_serial()))
+                ->column(column('sku', column_type_varchar(50))->notNull())
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('price', column_type_decimal(10, 2))->default(0))
+                ->column(column('stock', column_type_integer())->default(0))
                 ->constraint(primary_key('id'))
                 ->constraint(unique_constraint('sku'))
                 ->toSql()
@@ -51,8 +52,8 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropTableIfExists(self::TABLE_PRODUCTS);
-        $this->execute('DROP SCHEMA IF EXISTS ' . self::SCHEMA_NAME . ' CASCADE');
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_PRODUCTS);
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA_NAME);
 
         parent::tearDown();
     }
@@ -64,18 +65,14 @@ public function test_basic_insert() : void
             ->columns('sku', 'name', 'price')
             ->values(literal('SKU001'), literal('Product A'), literal(100));
 
-        $result = $this->execute($query->toSql());
+        self::assertSame(1, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        self::assertNotFalse($result);
-        self::assertSame(1, $this->affectedRows($result));
-
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('name'))
                 ->from(table(self::TABLE_PRODUCTS))
                 ->where(eq(col('sku'), literal('SKU001')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame('Product A', $row['name']);
     }
 
@@ -87,15 +84,12 @@ public function test_insert_multiple_rows() : void
             ->values(literal('SKU002'), literal('Product B'), literal(200))
             ->values(literal('SKU003'), literal('Product C'), literal(300));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(2, $this->affectedRows($result));
+        self::assertSame(2, $this->pgsqlContext()->client()->execute($query->toSql()));
     }
 
     public function test_insert_on_conflict_do_nothing() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_PRODUCTS)
                 ->columns('sku', 'name')
@@ -109,23 +103,20 @@ public function test_insert_on_conflict_do_nothing() : void
             ->values(literal('SKU006'), literal('Duplicate'))
             ->onConflict(on_conflict_nothing(conflict_columns(['sku'])));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('name'))
                 ->from(table(self::TABLE_PRODUCTS))
                 ->where(eq(col('sku'), literal('SKU006')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame('Original', $row['name']);
     }
 
     public function test_insert_on_conflict_do_update() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_PRODUCTS)
                 ->columns('sku', 'name', 'price')
@@ -144,17 +135,14 @@ public function test_insert_on_conflict_do_update() : void
                 )
             );
 
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
-
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('name'), col('price'))
                 ->from(table(self::TABLE_PRODUCTS))
                 ->where(eq(col('sku'), literal('SKU007')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame('Updated', $row['name']);
         self::assertSame('999.00', $row['price']);
     }
@@ -167,10 +155,8 @@ public function test_insert_with_returning() : void
             ->values(literal('SKU004'), literal('Product D'), literal(400))
             ->returning(col('id'), col('sku'));
 
-        $result = $this->execute($query->toSql());
+        $row = $this->pgsqlContext()->client()->fetchOne($query->toSql());
 
-        self::assertNotFalse($result);
-        $row = $this->fetchOne($result);
         self::assertArrayHasKey('id', $row);
         self::assertArrayHasKey('sku', $row);
         self::assertSame('SKU004', $row['sku']);
@@ -184,10 +170,8 @@ public function test_insert_with_returning_all() : void
             ->values(literal('SKU005'), literal('Product E'), literal(500))
             ->returningAll();
 
-        $result = $this->execute($query->toSql());
+        $row = $this->pgsqlContext()->client()->fetchOne($query->toSql());
 
-        self::assertNotFalse($result);
-        $row = $this->fetchOne($result);
         self::assertArrayHasKey('id', $row);
         self::assertArrayHasKey('sku', $row);
         self::assertArrayHasKey('name', $row);
@@ -197,13 +181,15 @@ public function test_insert_with_returning_all() : void
 
     public function test_insert_with_schema_qualified_table() : void
     {
-        $this->execute('CREATE SCHEMA IF NOT EXISTS ' . self::SCHEMA_NAME);
+        $this->pgsqlContext()->client()->execute(
+            create()->schema(self::SCHEMA_NAME)->ifNotExists()->toSql()
+        );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::SCHEMA_TABLE, self::SCHEMA_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('sku', data_type_varchar(50))->notNull())
-                ->column(column('name', data_type_varchar(100))->notNull())
+                ->column(column('id', column_type_serial()))
+                ->column(column('sku', column_type_varchar(50))->notNull())
+                ->column(column('name', column_type_varchar(100))->notNull())
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
@@ -213,18 +199,14 @@ public function test_insert_with_schema_qualified_table() : void
             ->columns('sku', 'name')
             ->values(literal('SCHEMA-SKU'), literal('Schema Product'));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(1, $this->affectedRows($result));
+        self::assertSame(1, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('name'))
                 ->from(table(self::SCHEMA_TABLE, self::SCHEMA_NAME))
                 ->where(eq(col('sku'), literal('SCHEMA-SKU')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame('Schema Product', $row['name']);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/MergeDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/MergeDatabaseTest.php
index f86e05ecd5..c1bb7dc808 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/MergeDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/MergeDatabaseTest.php
@@ -7,10 +7,10 @@
 use function Flow\PostgreSql\DSL\{
     col,
     column,
+    column_type_integer,
+    column_type_serial,
+    column_type_varchar,
     create,
-    data_type_integer,
-    data_type_serial,
-    data_type_varchar,
     eq,
     gt,
     insert,
@@ -22,8 +22,9 @@
     star,
     table
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class MergeDatabaseTest extends DatabaseTestCase
+final class MergeDatabaseTest extends PostgreSqlTestCase
 {
     private const SCHEMA_NAME = 'flow_postgres_test_merge_schema';
 
@@ -39,25 +40,25 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_TARGET)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('value', data_type_integer())->default(0))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('value', column_type_integer())->default(0))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_SOURCE)
-                ->column(column('id', data_type_integer())->notNull())
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('value', data_type_integer())->default(0))
+                ->column(column('id', column_type_integer())->notNull())
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('value', column_type_integer())->default(0))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_TARGET)
                 ->columns('name', 'value')
@@ -66,7 +67,7 @@ protected function setUp() : void
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_SOURCE)
                 ->columns('id', 'name', 'value')
@@ -79,9 +80,9 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropTableIfExists(self::TABLE_SOURCE);
-        $this->dropTableIfExists(self::TABLE_TARGET);
-        $this->execute('DROP SCHEMA IF EXISTS ' . self::SCHEMA_NAME . ' CASCADE');
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_SOURCE);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_TARGET);
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA_NAME);
 
         parent::tearDown();
     }
@@ -94,15 +95,10 @@ public function test_merge_delete_matched() : void
             ->whenMatched()
             ->thenDelete();
 
-        $result = $this->execute($query->toSql());
+        self::assertSame(2, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        self::assertNotFalse($result);
-        self::assertSame(2, $this->affectedRows($result));
-
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_TARGET))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_TARGET))->toSql()
         );
 
         self::assertCount(0, $rows);
@@ -116,14 +112,10 @@ public function test_merge_do_nothing() : void
             ->whenMatched()
             ->thenDoNothing();
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
         );
 
         self::assertCount(2, $rows);
@@ -142,20 +134,15 @@ public function test_merge_insert_not_matched() : void
                 'value' => col('s.value'),
             ]);
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(1, $this->affectedRows($result));
+        self::assertSame(1, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
         );
 
         self::assertCount(3, $rows);
         self::assertSame('Charlie', $rows[2]['name']);
-        self::assertSame('300', $rows[2]['value']);
+        self::assertSame(300, $rows[2]['value']);
     }
 
     public function test_merge_update_and_insert() : void
@@ -174,15 +161,10 @@ public function test_merge_update_and_insert() : void
                 'value' => col('s.value'),
             ]);
 
-        $result = $this->execute($query->toSql());
+        self::assertSame(3, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        self::assertNotFalse($result);
-        self::assertSame(3, $this->affectedRows($result));
-
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
         );
 
         self::assertCount(3, $rows);
@@ -202,22 +184,17 @@ public function test_merge_update_matched() : void
                 'value' => col('s.value'),
             ]);
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(2, $this->affectedRows($result));
+        self::assertSame(2, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
         );
 
         self::assertCount(2, $rows);
         self::assertSame('Alice Updated', $rows[0]['name']);
-        self::assertSame('150', $rows[0]['value']);
+        self::assertSame(150, $rows[0]['value']);
         self::assertSame('Bob Updated', $rows[1]['name']);
-        self::assertSame('250', $rows[1]['value']);
+        self::assertSame(250, $rows[1]['value']);
     }
 
     public function test_merge_using_subquery() : void
@@ -239,18 +216,14 @@ public function test_merge_using_subquery() : void
                 'value' => col('s.value'),
             ]);
 
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
-
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
         );
 
         self::assertCount(3, $rows);
-        self::assertSame('250', $rows[1]['value']);
+        self::assertSame(250, $rows[1]['value']);
         self::assertSame('Charlie', $rows[2]['name']);
     }
 
@@ -264,45 +237,40 @@ public function test_merge_with_condition() : void
                 'value' => col('s.value'),
             ]);
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(1, $this->affectedRows($result));
+        self::assertSame(1, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_TARGET))->orderBy(order_by(col('id')))->toSql()
         );
 
         self::assertCount(2, $rows);
-        self::assertSame('100', $rows[0]['value']);
-        self::assertSame('250', $rows[1]['value']);
+        self::assertSame(100, $rows[0]['value']);
+        self::assertSame(250, $rows[1]['value']);
     }
 
     public function test_merge_with_schema_qualified_tables() : void
     {
-        $this->execute('CREATE SCHEMA IF NOT EXISTS ' . self::SCHEMA_NAME);
+        $this->pgsqlContext()->client()->execute('CREATE SCHEMA IF NOT EXISTS ' . self::SCHEMA_NAME);
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::SCHEMA_TARGET, self::SCHEMA_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('value', data_type_integer())->default(0))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('value', column_type_integer())->default(0))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::SCHEMA_SOURCE, self::SCHEMA_NAME)
-                ->column(column('id', data_type_integer())->notNull())
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('value', data_type_integer())->default(0))
+                ->column(column('id', column_type_integer())->notNull())
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('value', column_type_integer())->default(0))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::SCHEMA_NAME . '.' . self::SCHEMA_TARGET)
                 ->columns('name', 'value')
@@ -310,7 +278,7 @@ public function test_merge_with_schema_qualified_tables() : void
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::SCHEMA_NAME . '.' . self::SCHEMA_SOURCE)
                 ->columns('id', 'name', 'value')
@@ -333,24 +301,19 @@ public function test_merge_with_schema_qualified_tables() : void
                 'value' => col('s.value'),
             ]);
 
-        $result = $this->execute($query->toSql());
+        self::assertSame(2, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        self::assertNotFalse($result);
-        self::assertSame(2, $this->affectedRows($result));
-
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())
-                    ->from(table(self::SCHEMA_TARGET, self::SCHEMA_NAME))
-                    ->orderBy(order_by(col('id')))
-                    ->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())
+                ->from(table(self::SCHEMA_TARGET, self::SCHEMA_NAME))
+                ->orderBy(order_by(col('id')))
+                ->toSql()
         );
 
         self::assertCount(2, $rows);
         self::assertSame('Updated Row', $rows[0]['name']);
-        self::assertSame('200', $rows[0]['value']);
+        self::assertSame(200, $rows[0]['value']);
         self::assertSame('New Row', $rows[1]['name']);
-        self::assertSame('300', $rows[1]['value']);
+        self::assertSame(300, $rows[1]['value']);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SchemaDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SchemaDatabaseTest.php
index dcf7f921f6..1325da68e1 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SchemaDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SchemaDatabaseTest.php
@@ -7,9 +7,9 @@
 use function Flow\PostgreSql\DSL\{
     alter,
     column,
+    column_type_serial,
+    column_type_varchar,
     create,
-    data_type_serial,
-    data_type_varchar,
     drop,
     insert,
     literal,
@@ -18,8 +18,9 @@
     star,
     table
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class SchemaDatabaseTest extends DatabaseTestCase
+final class SchemaDatabaseTest extends PostgreSqlTestCase
 {
     private const SCHEMA_NAME = 'flow_postgres_test_schema';
 
@@ -31,109 +32,101 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->dropSchemaIfExists(self::SCHEMA_NAME);
-        $this->dropSchemaIfExists(self::SCHEMA_NAME_RENAMED);
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA_NAME);
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA_NAME_RENAMED);
     }
 
     protected function tearDown() : void
     {
-        $this->dropSchemaIfExists(self::SCHEMA_NAME);
-        $this->dropSchemaIfExists(self::SCHEMA_NAME_RENAMED);
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA_NAME);
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA_NAME_RENAMED);
 
         parent::tearDown();
     }
 
     public function test_alter_schema_owner() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->schema(self::SCHEMA_NAME)->toSql()
         );
 
-        $currentUser = $this->fetchOne($this->execute('SELECT current_user AS username'));
+        $currentUser = $this->pgsqlContext()->client()->fetchOne('SELECT current_user AS username');
         self::assertIsString($currentUser['username']);
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->schema(self::SCHEMA_NAME)
                 ->ownerTo($currentUser['username'])
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_alter_schema_rename() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->schema(self::SCHEMA_NAME)->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->schema(self::SCHEMA_NAME)
                 ->renameTo(self::SCHEMA_NAME_RENAMED)
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->schemaExists(self::SCHEMA_NAME));
         self::assertTrue($this->schemaExists(self::SCHEMA_NAME_RENAMED));
     }
 
     public function test_create_schema() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->schema(self::SCHEMA_NAME)->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->schemaExists(self::SCHEMA_NAME));
     }
 
     public function test_create_schema_if_not_exists() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->schema(self::SCHEMA_NAME)->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->schema(self::SCHEMA_NAME)->ifNotExists()->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->schemaExists(self::SCHEMA_NAME));
     }
 
     public function test_create_schema_with_authorization() : void
     {
-        $currentUser = $this->fetchOne($this->execute('SELECT current_user AS username'));
+        $currentUser = $this->pgsqlContext()->client()->fetchOne('SELECT current_user AS username');
         self::assertIsString($currentUser['username']);
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->schema(self::SCHEMA_NAME)
                 ->authorization($currentUser['username'])
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->schemaExists(self::SCHEMA_NAME));
     }
 
     public function test_create_table_in_schema() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->schema(self::SCHEMA_NAME)->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_NAME, self::SCHEMA_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::SCHEMA_NAME . '.' . self::TABLE_NAME)
                 ->columns('name')
@@ -141,10 +134,8 @@ public function test_create_table_in_schema() : void
                 ->toSql()
         );
 
-        $row = $this->fetchOne(
-            $this->execute(
-                select(star())->from(table(self::TABLE_NAME, self::SCHEMA_NAME))->toSql()
-            )
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(star())->from(table(self::TABLE_NAME, self::SCHEMA_NAME))->toSql()
         );
 
         self::assertSame('Test', $row['name']);
@@ -152,78 +143,70 @@ public function test_create_table_in_schema() : void
 
     public function test_drop_multiple_schemas() : void
     {
-        $this->execute(create()->schema(self::SCHEMA_NAME)->toSql());
-        $this->execute(create()->schema(self::SCHEMA_NAME_RENAMED)->toSql());
+        $this->pgsqlContext()->client()->execute(create()->schema(self::SCHEMA_NAME)->toSql());
+        $this->pgsqlContext()->client()->execute(create()->schema(self::SCHEMA_NAME_RENAMED)->toSql());
 
         self::assertTrue($this->schemaExists(self::SCHEMA_NAME));
         self::assertTrue($this->schemaExists(self::SCHEMA_NAME_RENAMED));
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->schema(self::SCHEMA_NAME, self::SCHEMA_NAME_RENAMED)->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->schemaExists(self::SCHEMA_NAME));
         self::assertFalse($this->schemaExists(self::SCHEMA_NAME_RENAMED));
     }
 
     public function test_drop_schema() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->schema(self::SCHEMA_NAME)->toSql()
         );
 
         self::assertTrue($this->schemaExists(self::SCHEMA_NAME));
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->schema(self::SCHEMA_NAME)->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->schemaExists(self::SCHEMA_NAME));
     }
 
     public function test_drop_schema_cascade() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->schema(self::SCHEMA_NAME)->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_NAME, self::SCHEMA_NAME)
-                ->column(column('id', data_type_serial()))
+                ->column(column('id', column_type_serial()))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->schema(self::SCHEMA_NAME)->cascade()->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->schemaExists(self::SCHEMA_NAME));
     }
 
     public function test_drop_schema_if_exists() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             drop()->schema(self::SCHEMA_NAME)->ifExists()->toSql()
         );
-
-        self::assertNotFalse($result);
-    }
-
-    protected function dropSchemaIfExists(string $name) : void
-    {
-        $this->execute("DROP SCHEMA IF EXISTS {$name} CASCADE");
     }
 
     protected function schemaExists(string $name) : bool
     {
-        $row = $this->fetchOne(
-            $this->execute("SELECT EXISTS(SELECT 1 FROM pg_namespace WHERE nspname = '{$name}') AS schema_exists")
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            "SELECT EXISTS(SELECT 1 FROM pg_namespace WHERE nspname = '{$name}') AS schema_exists"
         );
 
-        return $row['schema_exists'] === 't';
+        return $row['schema_exists'] === true;
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SelectDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SelectDatabaseTest.php
index 127b838be1..497546ea1a 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SelectDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SelectDatabaseTest.php
@@ -6,15 +6,15 @@
 
 use function Flow\PostgreSql\DSL\{
     agg_sum,
+    and_,
     col,
     column,
-    cond_and,
+    column_type_decimal,
+    column_type_integer,
+    column_type_serial,
+    column_type_varchar,
     create,
     cte,
-    data_type_decimal,
-    data_type_integer,
-    data_type_serial,
-    data_type_varchar,
     desc,
     eq,
     gt,
@@ -26,8 +26,9 @@
     table,
     with
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class SelectDatabaseTest extends DatabaseTestCase
+final class SelectDatabaseTest extends PostgreSqlTestCase
 {
     private const SCHEMA_NAME = 'flow_postgres_test_select_schema';
 
@@ -41,27 +42,27 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_USERS)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('email', data_type_varchar(255)))
-                ->column(column('age', data_type_integer())->default(0))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('email', column_type_varchar(255)))
+                ->column(column('age', column_type_integer())->default(0))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_ORDERS)
-                ->column(column('id', data_type_serial()))
-                ->column(column('user_id', data_type_integer()))
-                ->column(column('amount', data_type_decimal(10, 2))->notNull())
-                ->column(column('status', data_type_varchar(50))->default('pending'))
+                ->column(column('id', column_type_serial()))
+                ->column(column('user_id', column_type_integer()))
+                ->column(column('amount', column_type_decimal(10, 2))->notNull())
+                ->column(column('status', column_type_varchar(50))->default('pending'))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_USERS)
                 ->columns('name', 'email', 'age')
@@ -71,7 +72,7 @@ protected function setUp() : void
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_ORDERS)
                 ->columns('user_id', 'amount', 'status')
@@ -85,9 +86,9 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropTableIfExists(self::TABLE_ORDERS);
-        $this->dropTableIfExists(self::TABLE_USERS);
-        $this->execute('DROP SCHEMA IF EXISTS ' . self::SCHEMA_NAME . ' CASCADE');
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_ORDERS);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_USERS);
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA_NAME);
 
         parent::tearDown();
     }
@@ -96,10 +97,8 @@ public function test_basic_select_all() : void
     {
         $query = select(star())->from(table(self::TABLE_USERS));
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(3, $rows);
     }
 
@@ -109,10 +108,8 @@ public function test_select_distinct() : void
             ->selectDistinct(col('status'))
             ->from(table(self::TABLE_ORDERS));
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(2, $rows);
     }
 
@@ -121,10 +118,8 @@ public function test_select_specific_columns() : void
         $query = select(col('name'), col('email'))
             ->from(table(self::TABLE_USERS));
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(3, $rows);
         self::assertArrayHasKey('name', $rows[0]);
         self::assertArrayHasKey('email', $rows[0]);
@@ -143,10 +138,8 @@ public function test_select_with_cte() : void
             ->from(table('order_totals'))
             ->where(gt(col('total'), literal(200)));
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertGreaterThanOrEqual(1, \count($rows));
     }
 
@@ -156,10 +149,8 @@ public function test_select_with_group_by_and_aggregate() : void
             ->from(table(self::TABLE_ORDERS))
             ->groupBy(col('user_id'));
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(3, $rows);
     }
 
@@ -172,10 +163,8 @@ public function test_select_with_join() : void
                 eq(col('id', self::TABLE_USERS), col('user_id', self::TABLE_ORDERS))
             );
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(4, $rows);
     }
 
@@ -184,16 +173,14 @@ public function test_select_with_multiple_conditions() : void
         $query = select(star())
             ->from(table(self::TABLE_USERS))
             ->where(
-                cond_and(
+                and_(
                     gt(col('age'), literal(20)),
                     gt(col('age'), literal(25))
                 )
             );
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(2, $rows);
     }
 
@@ -204,10 +191,8 @@ public function test_select_with_order_by_and_limit() : void
             ->orderBy(desc(col('age')))
             ->limit(2);
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(2, $rows);
         self::assertSame('Bob Wilson', $rows[0]['name']);
         self::assertSame('John Doe', $rows[1]['name']);
@@ -215,18 +200,20 @@ public function test_select_with_order_by_and_limit() : void
 
     public function test_select_with_schema_qualified_table() : void
     {
-        $this->execute('CREATE SCHEMA IF NOT EXISTS ' . self::SCHEMA_NAME);
+        $this->pgsqlContext()->client()->execute(
+            create()->schema(self::SCHEMA_NAME)->ifNotExists()->toSql()
+        );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::SCHEMA_TABLE, self::SCHEMA_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('email', data_type_varchar(255)))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('email', column_type_varchar(255)))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::SCHEMA_NAME . '.' . self::SCHEMA_TABLE)
                 ->columns('name', 'email')
@@ -237,10 +224,8 @@ public function test_select_with_schema_qualified_table() : void
         $query = select(star())
             ->from(table(self::SCHEMA_TABLE, self::SCHEMA_NAME));
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(1, $rows);
         self::assertSame('Schema User', $rows[0]['name']);
         self::assertSame('schema@example.com', $rows[0]['email']);
@@ -252,10 +237,8 @@ public function test_select_with_where() : void
             ->from(table(self::TABLE_USERS))
             ->where(eq(col('name'), literal('John Doe')));
 
-        $result = $this->execute($query->toSql());
+        $rows = $this->pgsqlContext()->client()->fetchAll($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(1, $rows);
         self::assertSame('John Doe', $rows[0]['name']);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SequenceDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SequenceDatabaseTest.php
index 8da77bc51d..1bd4deee82 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SequenceDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/SequenceDatabaseTest.php
@@ -15,8 +15,9 @@
     select,
     table
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class SequenceDatabaseTest extends DatabaseTestCase
+final class SequenceDatabaseTest extends PostgreSqlTestCase
 {
     private const SEQUENCE_COUNTER = 'flow_postgres_counter_seq';
 
@@ -24,8 +25,8 @@ final class SequenceDatabaseTest extends DatabaseTestCase
 
     protected function tearDown() : void
     {
-        $this->dropSequenceIfExists(self::SEQUENCE_TEST);
-        $this->dropSequenceIfExists(self::SEQUENCE_COUNTER);
+        $this->pgsqlContext()->dropSequenceIfExists(self::SEQUENCE_TEST);
+        $this->pgsqlContext()->dropSequenceIfExists(self::SEQUENCE_COUNTER);
 
         parent::tearDown();
     }
@@ -33,66 +34,57 @@ protected function tearDown() : void
     public function test_alter_sequence_increment() : void
     {
         $createQuery = create()->sequence(self::SEQUENCE_TEST)->startWith(1);
-        $this->execute($createQuery->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
         $alterQuery = alter()->sequence(self::SEQUENCE_TEST)
             ->incrementBy(10);
 
-        $result = $this->execute($alterQuery->toSql());
+        $this->pgsqlContext()->client()->execute($alterQuery->toSql());
 
-        self::assertNotFalse($result);
-
-        $this->execute(
+        $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_TEST)]))->toSql()
         );
-        $secondVal = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_TEST)])->as('val'))->toSql()
         );
-        $row = $this->fetchOne($secondVal);
-        self::assertSame('11', $row['val']);
+        self::assertSame(11, $row['val']);
     }
 
     public function test_alter_sequence_restart() : void
     {
         $createQuery = create()->sequence(self::SEQUENCE_TEST)->startWith(1);
-        $this->execute($createQuery->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
-        $this->execute(
+        $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_TEST)]))->toSql()
         );
-        $this->execute(
+        $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_TEST)]))->toSql()
         );
 
         $alterQuery = alter()->sequence(self::SEQUENCE_TEST)
             ->restartWith(1);
 
-        $result = $this->execute($alterQuery->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($alterQuery->toSql());
 
-        $nextVal = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_TEST)])->as('val'))->toSql()
         );
-        $row = $this->fetchOne($nextVal);
-        self::assertSame('1', $row['val']);
+        self::assertSame(1, $row['val']);
     }
 
     public function test_create_sequence() : void
     {
         $query = create()->sequence(self::SEQUENCE_TEST);
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $check = $this->execute(
+        $sequences = $this->pgsqlContext()->client()->fetchAll(
             select(col('sequencename'))
                 ->from(table('pg_sequences'))
                 ->where(eq(col('sequencename'), literal(self::SEQUENCE_TEST)))
                 ->toSql()
         );
-        $sequences = $this->fetchAll($check);
         self::assertCount(1, $sequences);
     }
 
@@ -102,18 +94,15 @@ public function test_create_sequence_with_increment() : void
             ->incrementBy(5)
             ->startWith(10);
 
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
-
-        $this->execute(
+        $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_TEST)]))->toSql()
         );
-        $secondVal = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_TEST)])->as('val'))->toSql()
         );
-        $row = $this->fetchOne($secondVal);
-        self::assertSame('15', $row['val']);
+        self::assertSame(15, $row['val']);
     }
 
     public function test_create_sequence_with_min_max() : void
@@ -123,19 +112,16 @@ public function test_create_sequence_with_min_max() : void
             ->maxValue(1000)
             ->startWith(1);
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('min_value'), col('max_value'))
                 ->from(table('pg_sequences'))
                 ->where(eq(col('sequencename'), literal(self::SEQUENCE_TEST)))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
-        self::assertSame('1', $row['min_value']);
-        self::assertSame('1000', $row['max_value']);
+        self::assertSame(1, $row['min_value']);
+        self::assertSame(1000, $row['max_value']);
     }
 
     public function test_create_sequence_with_start_value() : void
@@ -143,64 +129,58 @@ public function test_create_sequence_with_start_value() : void
         $query = create()->sequence(self::SEQUENCE_TEST)
             ->startWith(100);
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $nextVal = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_TEST)])->as('val'))->toSql()
         );
-        $row = $this->fetchOne($nextVal);
-        self::assertSame('100', $row['val']);
+        self::assertSame(100, $row['val']);
     }
 
     public function test_drop_sequence() : void
     {
         $createQuery = create()->sequence(self::SEQUENCE_TEST);
-        $this->execute($createQuery->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
         $dropQuery = drop()->sequence(self::SEQUENCE_TEST);
 
-        $result = $this->execute($dropQuery->toSql());
+        $this->pgsqlContext()->client()->execute($dropQuery->toSql());
 
-        self::assertNotFalse($result);
-
-        $check = $this->execute(
+        $sequences = $this->pgsqlContext()->client()->fetchAll(
             select(col('sequencename'))
                 ->from(table('pg_sequences'))
                 ->where(eq(col('sequencename'), literal(self::SEQUENCE_TEST)))
                 ->toSql()
         );
-        $sequences = $this->fetchAll($check);
         self::assertCount(0, $sequences);
     }
 
     public function test_drop_sequence_if_exists() : void
     {
-        $dropQuery = drop()->sequence(self::SEQUENCE_TEST)->ifExists();
+        $this->expectNotToPerformAssertions();
 
-        $result = $this->execute($dropQuery->toSql());
+        $dropQuery = drop()->sequence(self::SEQUENCE_TEST)->ifExists();
 
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($dropQuery->toSql());
     }
 
     public function test_sequence_usage_with_nextval() : void
     {
         $createQuery = create()->sequence(self::SEQUENCE_COUNTER)->startWith(1);
-        $this->execute($createQuery->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
-        $val1 = $this->fetchOne($this->execute(
+        $val1 = $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_COUNTER)])->as('val'))->toSql()
-        ));
-        $val2 = $this->fetchOne($this->execute(
+        );
+        $val2 = $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_COUNTER)])->as('val'))->toSql()
-        ));
-        $val3 = $this->fetchOne($this->execute(
+        );
+        $val3 = $this->pgsqlContext()->client()->fetchOne(
             select(func('nextval', [literal(self::SEQUENCE_COUNTER)])->as('val'))->toSql()
-        ));
+        );
 
-        self::assertSame('1', $val1['val']);
-        self::assertSame('2', $val2['val']);
-        self::assertSame('3', $val3['val']);
+        self::assertSame(1, $val1['val']);
+        self::assertSame(2, $val2['val']);
+        self::assertSame(3, $val3['val']);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TableDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TableDatabaseTest.php
index af1af4ffe1..e9b7ffe4a7 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TableDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TableDatabaseTest.php
@@ -5,22 +5,34 @@
 namespace Flow\PostgreSql\Tests\Integration\QueryBuilder\Database;
 
 use function Flow\PostgreSql\DSL\{
+    agg_count,
     alter,
+    and_,
+    asc,
     check_constraint,
+    col,
     column,
+    column_type_integer,
+    column_type_serial,
+    column_type_text,
+    column_type_varchar,
     create,
-    data_type_integer,
-    data_type_serial,
-    data_type_text,
-    data_type_varchar,
     drop,
+    eq,
     foreign_key,
+    func,
+    ge,
+    insert,
+    literal,
     primary_key,
+    select,
+    table,
     truncate_table,
     unique_constraint
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class TableDatabaseTest extends DatabaseTestCase
+final class TableDatabaseTest extends PostgreSqlTestCase
 {
     private const TABLE_CHILD = 'flow_postgres_child_table';
 
@@ -30,9 +42,9 @@ final class TableDatabaseTest extends DatabaseTestCase
 
     protected function tearDown() : void
     {
-        $this->dropTableIfExists(self::TABLE_CHILD);
-        $this->dropTableIfExists(self::TABLE_TEST);
-        $this->dropTableIfExists(self::TABLE_PARENT);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_CHILD);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_TEST);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_PARENT);
 
         parent::tearDown();
     }
@@ -40,60 +52,71 @@ protected function tearDown() : void
     public function test_alter_table_add_column() : void
     {
         $createQuery = create()->table(self::TABLE_TEST)
-            ->column(column('id', data_type_serial()))
-            ->column(column('name', data_type_varchar(100)));
-        $this->execute($createQuery->toSql());
+            ->column(column('id', column_type_serial()))
+            ->column(column('name', column_type_varchar(100)));
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
         $alterQuery = alter()->table(self::TABLE_TEST)
-            ->addColumn(column('email', data_type_varchar(255)));
-
-        $result = $this->execute($alterQuery->toSql());
-
-        self::assertNotFalse($result);
-
-        $check = $this->execute("SELECT column_name FROM information_schema.columns WHERE table_name = '" . self::TABLE_TEST . "' AND column_name = 'email'");
-        $columns = $this->fetchAll($check);
+            ->addColumn(column('email', column_type_varchar(255)));
+
+        $this->pgsqlContext()->client()->execute($alterQuery->toSql());
+
+        $columns = $this->pgsqlContext()->client()->fetchAll(
+            select(col('column_name'))
+                ->from(table('information_schema.columns'))
+                ->where(and_(
+                    eq(col('table_name'), literal(self::TABLE_TEST)),
+                    eq(col('column_name'), literal('email'))
+                ))
+                ->toSql()
+        );
         self::assertCount(1, $columns);
     }
 
     public function test_alter_table_drop_column() : void
     {
         $createQuery = create()->table(self::TABLE_TEST)
-            ->column(column('id', data_type_serial()))
-            ->column(column('name', data_type_varchar(100)))
-            ->column(column('to_drop', data_type_text()));
-        $this->execute($createQuery->toSql());
+            ->column(column('id', column_type_serial()))
+            ->column(column('name', column_type_varchar(100)))
+            ->column(column('to_drop', column_type_text()));
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
         $alterQuery = alter()->table(self::TABLE_TEST)
             ->dropColumn('to_drop');
 
-        $result = $this->execute($alterQuery->toSql());
-
-        self::assertNotFalse($result);
-
-        $check = $this->execute("SELECT column_name FROM information_schema.columns WHERE table_name = '" . self::TABLE_TEST . "' AND column_name = 'to_drop'");
-        $columns = $this->fetchAll($check);
+        $this->pgsqlContext()->client()->execute($alterQuery->toSql());
+
+        $columns = $this->pgsqlContext()->client()->fetchAll(
+            select(col('column_name'))
+                ->from(table('information_schema.columns'))
+                ->where(and_(
+                    eq(col('table_name'), literal(self::TABLE_TEST)),
+                    eq(col('column_name'), literal('to_drop'))
+                ))
+                ->toSql()
+        );
         self::assertCount(0, $columns);
     }
 
     public function test_create_table_with_check_constraint() : void
     {
         $query = create()->table(self::TABLE_TEST)
-            ->column(column('id', data_type_serial()))
-            ->column(column('age', data_type_integer()))
-            ->constraint(check_constraint('age >= 0'));
-
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-
-        $check = $this->execute("
-            SELECT pg_get_constraintdef(c.oid) as def
-            FROM pg_constraint c
-            JOIN pg_class t ON c.conrelid = t.oid
-            WHERE t.relname = '" . self::TABLE_TEST . "' AND c.contype = 'c'
-        ");
-        $constraints = $this->fetchAll($check);
+            ->column(column('id', column_type_serial()))
+            ->column(column('age', column_type_integer()))
+            ->constraint(check_constraint(ge(col('age'), literal(0))));
+
+        $this->pgsqlContext()->client()->execute($query->toSql());
+
+        $constraints = $this->pgsqlContext()->client()->fetchAll(
+            select(func('pg_get_constraintdef', [col('oid', 'c')])->as('def'))
+                ->from(table('pg_constraint')->as('c'))
+                ->join(table('pg_class')->as('t'), eq(col('conrelid', 'c'), col('oid', 't')))
+                ->where(and_(
+                    eq(col('relname', 't'), literal(self::TABLE_TEST)),
+                    eq(col('contype', 'c'), literal('c'))
+                ))
+                ->toSql()
+        );
         self::assertGreaterThanOrEqual(1, \count($constraints));
 
         $hasAgeConstraint = false;
@@ -111,16 +134,19 @@ public function test_create_table_with_check_constraint() : void
     public function test_create_table_with_columns() : void
     {
         $query = create()->table(self::TABLE_TEST)
-            ->column(column('id', data_type_serial()))
-            ->column(column('name', data_type_varchar(100))->notNull())
-            ->column(column('description', data_type_text()));
-
-        $result = $this->execute($query->toSql());
+            ->column(column('id', column_type_serial()))
+            ->column(column('name', column_type_varchar(100))->notNull())
+            ->column(column('description', column_type_text()));
 
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $check = $this->execute("SELECT column_name FROM information_schema.columns WHERE table_name = '" . self::TABLE_TEST . "' ORDER BY ordinal_position");
-        $columns = $this->fetchAll($check);
+        $columns = $this->pgsqlContext()->client()->fetchAll(
+            select(col('column_name'))
+                ->from(table('information_schema.columns'))
+                ->where(eq(col('table_name'), literal(self::TABLE_TEST)))
+                ->orderBy(asc(col('ordinal_position')))
+                ->toSql()
+        );
 
         self::assertCount(3, $columns);
         self::assertSame('id', $columns[0]['column_name']);
@@ -131,28 +157,31 @@ public function test_create_table_with_columns() : void
     public function test_create_table_with_foreign_key() : void
     {
         $parentQuery = create()->table(self::TABLE_PARENT)
-            ->column(column('id', data_type_serial()))
-            ->column(column('name', data_type_varchar(100)))
+            ->column(column('id', column_type_serial()))
+            ->column(column('name', column_type_varchar(100)))
             ->constraint(primary_key('id'));
-        $this->execute($parentQuery->toSql());
+        $this->pgsqlContext()->client()->execute($parentQuery->toSql());
 
         $childQuery = create()->table(self::TABLE_CHILD)
-            ->column(column('id', data_type_serial()))
-            ->column(column('parent_id', data_type_integer())->notNull())
+            ->column(column('id', column_type_serial()))
+            ->column(column('parent_id', column_type_integer())->notNull())
             ->constraint(foreign_key(['parent_id'], self::TABLE_PARENT, ['id']));
 
-        $result = $this->execute($childQuery->toSql());
-
-        self::assertNotFalse($result);
-
-        $check = $this->execute("
-            SELECT tc.constraint_type, ccu.table_name AS foreign_table_name
-            FROM information_schema.table_constraints tc
-            JOIN information_schema.constraint_column_usage ccu
-                ON tc.constraint_name = ccu.constraint_name
-            WHERE tc.table_name = '" . self::TABLE_CHILD . "' AND tc.constraint_type = 'FOREIGN KEY'
-        ");
-        $constraints = $this->fetchAll($check);
+        $this->pgsqlContext()->client()->execute($childQuery->toSql());
+
+        $constraints = $this->pgsqlContext()->client()->fetchAll(
+            select(col('constraint_type', 'tc'), col('table_name', 'ccu')->as('foreign_table_name'))
+                ->from(table('information_schema.table_constraints')->as('tc'))
+                ->join(
+                    table('information_schema.constraint_column_usage')->as('ccu'),
+                    eq(col('constraint_name', 'tc'), col('constraint_name', 'ccu'))
+                )
+                ->where(and_(
+                    eq(col('table_name', 'tc'), literal(self::TABLE_CHILD)),
+                    eq(col('constraint_type', 'tc'), literal('FOREIGN KEY'))
+                ))
+                ->toSql()
+        );
         self::assertCount(1, $constraints);
         self::assertSame(self::TABLE_PARENT, $constraints[0]['foreign_table_name']);
     }
@@ -160,75 +189,87 @@ public function test_create_table_with_foreign_key() : void
     public function test_create_table_with_primary_key() : void
     {
         $query = create()->table(self::TABLE_TEST)
-            ->column(column('id', data_type_integer())->notNull())
-            ->column(column('name', data_type_varchar(100)))
+            ->column(column('id', column_type_integer())->notNull())
+            ->column(column('name', column_type_varchar(100)))
             ->constraint(primary_key('id'));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-
-        $check = $this->execute("
-            SELECT constraint_type FROM information_schema.table_constraints
-            WHERE table_name = '" . self::TABLE_TEST . "' AND constraint_type = 'PRIMARY KEY'
-        ");
-        $constraints = $this->fetchAll($check);
+        $this->pgsqlContext()->client()->execute($query->toSql());
+
+        $constraints = $this->pgsqlContext()->client()->fetchAll(
+            select(col('constraint_type'))
+                ->from(table('information_schema.table_constraints'))
+                ->where(and_(
+                    eq(col('table_name'), literal(self::TABLE_TEST)),
+                    eq(col('constraint_type'), literal('PRIMARY KEY'))
+                ))
+                ->toSql()
+        );
         self::assertCount(1, $constraints);
     }
 
     public function test_create_table_with_unique_constraint() : void
     {
         $query = create()->table(self::TABLE_TEST)
-            ->column(column('id', data_type_serial()))
-            ->column(column('email', data_type_varchar(255))->notNull())
+            ->column(column('id', column_type_serial()))
+            ->column(column('email', column_type_varchar(255))->notNull())
             ->constraint(unique_constraint('email'));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-
-        $check = $this->execute("
-            SELECT constraint_type FROM information_schema.table_constraints
-            WHERE table_name = '" . self::TABLE_TEST . "' AND constraint_type = 'UNIQUE'
-        ");
-        $constraints = $this->fetchAll($check);
+        $this->pgsqlContext()->client()->execute($query->toSql());
+
+        $constraints = $this->pgsqlContext()->client()->fetchAll(
+            select(col('constraint_type'))
+                ->from(table('information_schema.table_constraints'))
+                ->where(and_(
+                    eq(col('table_name'), literal(self::TABLE_TEST)),
+                    eq(col('constraint_type'), literal('UNIQUE'))
+                ))
+                ->toSql()
+        );
         self::assertCount(1, $constraints);
     }
 
     public function test_drop_table() : void
     {
         $createQuery = create()->table(self::TABLE_TEST)
-            ->column(column('id', data_type_serial()));
-        $this->execute($createQuery->toSql());
+            ->column(column('id', column_type_serial()));
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
         $dropQuery = drop()->table(self::TABLE_TEST);
 
-        $result = $this->execute($dropQuery->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($dropQuery->toSql());
 
-        $check = $this->execute("SELECT table_name FROM information_schema.tables WHERE table_name = '" . self::TABLE_TEST . "'");
-        $tables = $this->fetchAll($check);
+        $tables = $this->pgsqlContext()->client()->fetchAll(
+            select(col('table_name'))
+                ->from(table('information_schema.tables'))
+                ->where(eq(col('table_name'), literal(self::TABLE_TEST)))
+                ->toSql()
+        );
         self::assertCount(0, $tables);
     }
 
     public function test_truncate_table() : void
     {
         $createQuery = create()->table(self::TABLE_TEST)
-            ->column(column('id', data_type_serial()))
-            ->column(column('name', data_type_varchar(100)));
-        $this->execute($createQuery->toSql());
-
-        $this->execute('INSERT INTO ' . self::TABLE_TEST . " (name) VALUES ('test1'), ('test2')");
+            ->column(column('id', column_type_serial()))
+            ->column(column('name', column_type_varchar(100)));
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
+
+        $this->pgsqlContext()->client()->execute(
+            insert()
+                ->into(self::TABLE_TEST)
+                ->columns('name')
+                ->values(literal('test1'))
+                ->values(literal('test2'))
+                ->toSql()
+        );
 
         $truncateQuery = truncate_table(self::TABLE_TEST);
 
-        $result = $this->execute($truncateQuery->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($truncateQuery->toSql());
 
-        $check = $this->execute('SELECT COUNT(*) as cnt FROM ' . self::TABLE_TEST);
-        $row = $this->fetchOne($check);
-        self::assertSame('0', $row['cnt']);
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count()->as('cnt'))->from(table(self::TABLE_TEST))->toSql()
+        );
+        self::assertSame(0, $row['cnt']);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TransactionDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TransactionDatabaseTest.php
index 3898f7c2bb..21a8a1d5cd 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TransactionDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TransactionDatabaseTest.php
@@ -8,11 +8,11 @@
     begin,
     col,
     column,
+    column_type_decimal,
+    column_type_serial,
+    column_type_varchar,
     commit,
     create,
-    data_type_decimal,
-    data_type_serial,
-    data_type_varchar,
     eq,
     insert,
     literal,
@@ -27,8 +27,9 @@
 };
 
 use Flow\PostgreSql\QueryBuilder\Transaction\IsolationLevel;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class TransactionDatabaseTest extends DatabaseTestCase
+final class TransactionDatabaseTest extends PostgreSqlTestCase
 {
     private const TABLE_ACCOUNTS = 'flow_postgres_accounts';
 
@@ -36,16 +37,16 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_ACCOUNTS)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('balance', data_type_decimal(10, 2))->default(0))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('balance', column_type_decimal(10, 2))->default(0))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_ACCOUNTS)
                 ->columns('name', 'balance')
@@ -57,163 +58,151 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->execute(rollback()->toSql());
-        $this->dropTableIfExists(self::TABLE_ACCOUNTS);
+        $this->pgsqlContext()->client()->execute(rollback()->toSql());
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_ACCOUNTS);
 
         parent::tearDown();
     }
 
     public function test_begin_and_commit() : void
     {
-        $this->execute(begin()->toSql());
+        $this->pgsqlContext()->client()->execute(begin()->toSql());
 
         $updateQuery = update()
             ->update(self::TABLE_ACCOUNTS)
             ->set('balance', literal(1500))
             ->where(eq(col('name'), literal('Account A')));
 
-        $this->execute($updateQuery->toSql());
+        $this->pgsqlContext()->client()->execute($updateQuery->toSql());
 
-        $this->execute(commit()->toSql());
+        $this->pgsqlContext()->client()->execute(commit()->toSql());
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('balance'))
                 ->from(table(self::TABLE_ACCOUNTS))
                 ->where(eq(col('name'), literal('Account A')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame('1500.00', $row['balance']);
     }
 
     public function test_begin_and_rollback() : void
     {
-        $checkBefore = $this->execute(
+        $beforeRow = $this->pgsqlContext()->client()->fetchOne(
             select(col('balance'))
                 ->from(table(self::TABLE_ACCOUNTS))
                 ->where(eq(col('name'), literal('Account A')))
                 ->toSql()
         );
-        $beforeRow = $this->fetchOne($checkBefore);
         $originalBalance = $beforeRow['balance'];
 
-        $this->execute(begin()->toSql());
+        $this->pgsqlContext()->client()->execute(begin()->toSql());
 
         $updateQuery = update()
             ->update(self::TABLE_ACCOUNTS)
             ->set('balance', literal(9999))
             ->where(eq(col('name'), literal('Account A')));
 
-        $this->execute($updateQuery->toSql());
+        $this->pgsqlContext()->client()->execute($updateQuery->toSql());
 
-        $this->execute(rollback()->toSql());
+        $this->pgsqlContext()->client()->execute(rollback()->toSql());
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('balance'))
                 ->from(table(self::TABLE_ACCOUNTS))
                 ->where(eq(col('name'), literal('Account A')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame($originalBalance, $row['balance']);
     }
 
     public function test_begin_with_isolation_level() : void
     {
-        $this->execute(begin()->isolationLevel(IsolationLevel::SERIALIZABLE)->toSql());
+        $this->pgsqlContext()->client()->execute(begin()->isolationLevel(IsolationLevel::SERIALIZABLE)->toSql());
 
         $selectQuery = select(star())->from(table(self::TABLE_ACCOUNTS));
-        $result = $this->execute($selectQuery->toSql());
-
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
+        $rows = $this->pgsqlContext()->client()->fetchAll($selectQuery->toSql());
         self::assertCount(2, $rows);
 
-        $this->execute(commit()->toSql());
+        $this->pgsqlContext()->client()->execute(commit()->toSql());
     }
 
     public function test_begin_with_read_only() : void
     {
-        $this->execute(begin()->readOnly()->toSql());
+        $this->pgsqlContext()->client()->execute(begin()->readOnly()->toSql());
 
         $selectQuery = select(star())->from(table(self::TABLE_ACCOUNTS));
-        $result = $this->execute($selectQuery->toSql());
-
-        self::assertNotFalse($result);
-        self::assertCount(2, $this->fetchAll($result));
+        self::assertCount(2, $this->pgsqlContext()->client()->fetchAll($selectQuery->toSql()));
 
-        $this->execute(commit()->toSql());
+        $this->pgsqlContext()->client()->execute(commit()->toSql());
     }
 
     public function test_rollback_to_savepoint() : void
     {
-        $this->execute(begin()->toSql());
+        $this->pgsqlContext()->client()->execute(begin()->toSql());
 
         $updateQuery1 = update()
             ->update(self::TABLE_ACCOUNTS)
             ->set('balance', literal(750))
             ->where(eq(col('name'), literal('Account A')));
-        $this->execute($updateQuery1->toSql());
+        $this->pgsqlContext()->client()->execute($updateQuery1->toSql());
 
-        $this->execute(savepoint('sp_rollback')->toSql());
+        $this->pgsqlContext()->client()->execute(savepoint('sp_rollback')->toSql());
 
         $updateQuery2 = update()
             ->update(self::TABLE_ACCOUNTS)
             ->set('balance', literal(9999))
             ->where(eq(col('name'), literal('Account A')));
-        $this->execute($updateQuery2->toSql());
+        $this->pgsqlContext()->client()->execute($updateQuery2->toSql());
 
-        $this->execute(rollback()->toSavepoint('sp_rollback')->toSql());
+        $this->pgsqlContext()->client()->execute(rollback()->toSavepoint('sp_rollback')->toSql());
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('balance'))
                 ->from(table(self::TABLE_ACCOUNTS))
                 ->where(eq(col('name'), literal('Account A')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame('750.00', $row['balance']);
 
-        $this->execute(commit()->toSql());
+        $this->pgsqlContext()->client()->execute(commit()->toSql());
     }
 
     public function test_savepoint_and_release() : void
     {
-        $this->execute(begin()->toSql());
+        $this->pgsqlContext()->client()->execute(begin()->toSql());
 
         $updateQuery1 = update()
             ->update(self::TABLE_ACCOUNTS)
             ->set('balance', literal(800))
             ->where(eq(col('name'), literal('Account A')));
-        $this->execute($updateQuery1->toSql());
+        $this->pgsqlContext()->client()->execute($updateQuery1->toSql());
 
-        $this->execute(savepoint('sp1')->toSql());
+        $this->pgsqlContext()->client()->execute(savepoint('sp1')->toSql());
 
         $updateQuery2 = update()
             ->update(self::TABLE_ACCOUNTS)
             ->set('balance', literal(600))
             ->where(eq(col('name'), literal('Account B')));
-        $this->execute($updateQuery2->toSql());
+        $this->pgsqlContext()->client()->execute($updateQuery2->toSql());
 
-        $this->execute(release_savepoint('sp1')->toSql());
-        $this->execute(commit()->toSql());
+        $this->pgsqlContext()->client()->execute(release_savepoint('sp1')->toSql());
+        $this->pgsqlContext()->client()->execute(commit()->toSql());
 
-        $checkA = $this->execute(
+        $rowA = $this->pgsqlContext()->client()->fetchOne(
             select(col('balance'))
                 ->from(table(self::TABLE_ACCOUNTS))
                 ->where(eq(col('name'), literal('Account A')))
                 ->toSql()
         );
-        $rowA = $this->fetchOne($checkA);
         self::assertSame('800.00', $rowA['balance']);
 
-        $checkB = $this->execute(
+        $rowB = $this->pgsqlContext()->client()->fetchOne(
             select(col('balance'))
                 ->from(table(self::TABLE_ACCOUNTS))
                 ->where(eq(col('name'), literal('Account B')))
                 ->toSql()
         );
-        $rowB = $this->fetchOne($checkB);
         self::assertSame('600.00', $rowB['balance']);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TriggerDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TriggerDatabaseTest.php
index 013f31f650..6977bfb1ed 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TriggerDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TriggerDatabaseTest.php
@@ -6,25 +6,27 @@
 
 use function Flow\PostgreSql\DSL\{
     alter,
+    col,
     column,
+    column_type_integer,
+    column_type_serial,
+    column_type_varchar,
     create,
-    data_type_integer,
-    data_type_serial,
-    data_type_varchar,
     drop,
     insert,
     literal,
+    ne,
     primary_key,
-    raw_cond,
     select,
     star,
     table
 };
 
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 use Flow\PostgreSql\QueryBuilder\Schema\Trigger\TriggerEvent;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class TriggerDatabaseTest extends DatabaseTestCase
+final class TriggerDatabaseTest extends PostgreSqlTestCase
 {
     private const FUNCTION_NAME = 'flow_postgres_trigger_func';
 
@@ -40,27 +42,27 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('value', data_type_integer())->default(0))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('value', column_type_integer())->default(0))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_LOG)
-                ->column(column('id', data_type_serial()))
-                ->column(column('action', data_type_varchar(50))->notNull())
+                ->column(column('id', column_type_serial()))
+                ->column(column('action', column_type_varchar(50))->notNull())
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->function(self::FUNCTION_NAME)
                 ->arguments()
-                ->returns(DataType::custom('trigger'))
+                ->returns(ColumnType::custom('trigger'))
                 ->language('plpgsql')
                 ->as('BEGIN INSERT INTO ' . self::TABLE_LOG . ' (action) VALUES (TG_OP); RETURN NEW; END;')
                 ->toSql()
@@ -69,18 +71,18 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropTriggerIfExists(self::TRIGGER_NAME, self::TABLE_NAME);
-        $this->dropTriggerIfExists(self::TRIGGER_NAME_RENAMED, self::TABLE_NAME);
-        $this->dropFunctionIfExists(self::FUNCTION_NAME);
-        $this->dropTableIfExists(self::TABLE_LOG);
-        $this->dropTableIfExists(self::TABLE_NAME);
+        $this->pgsqlContext()->dropTriggerIfExists(self::TRIGGER_NAME, self::TABLE_NAME);
+        $this->pgsqlContext()->dropTriggerIfExists(self::TRIGGER_NAME_RENAMED, self::TABLE_NAME);
+        $this->pgsqlContext()->dropFunctionIfExists(self::FUNCTION_NAME);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_LOG);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_NAME);
 
         parent::tearDown();
     }
 
     public function test_alter_trigger_rename() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->trigger(self::TRIGGER_NAME)
                 ->before(TriggerEvent::INSERT)
                 ->on(self::TABLE_NAME)
@@ -89,21 +91,20 @@ public function test_alter_trigger_rename() : void
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->trigger(self::TRIGGER_NAME)
                 ->on(self::TABLE_NAME)
                 ->renameTo(self::TRIGGER_NAME_RENAMED)
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->triggerExists(self::TRIGGER_NAME, self::TABLE_NAME));
         self::assertTrue($this->triggerExists(self::TRIGGER_NAME_RENAMED, self::TABLE_NAME));
     }
 
     public function test_create_or_replace_trigger() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->trigger(self::TRIGGER_NAME)
                 ->before(TriggerEvent::INSERT)
                 ->on(self::TABLE_NAME)
@@ -112,7 +113,7 @@ public function test_create_or_replace_trigger() : void
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->trigger(self::TRIGGER_NAME)
                 ->orReplace()
                 ->after(TriggerEvent::INSERT)
@@ -122,13 +123,12 @@ public function test_create_or_replace_trigger() : void
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->triggerExists(self::TRIGGER_NAME, self::TABLE_NAME));
     }
 
     public function test_create_trigger_after_insert() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->trigger(self::TRIGGER_NAME)
                 ->after(TriggerEvent::INSERT)
                 ->on(self::TABLE_NAME)
@@ -137,13 +137,12 @@ public function test_create_trigger_after_insert() : void
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->triggerExists(self::TRIGGER_NAME, self::TABLE_NAME));
     }
 
     public function test_create_trigger_after_multiple_events() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->trigger(self::TRIGGER_NAME)
                 ->after(TriggerEvent::INSERT, TriggerEvent::UPDATE)
                 ->on(self::TABLE_NAME)
@@ -152,13 +151,12 @@ public function test_create_trigger_after_multiple_events() : void
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->triggerExists(self::TRIGGER_NAME, self::TABLE_NAME));
     }
 
     public function test_create_trigger_before_insert() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->trigger(self::TRIGGER_NAME)
                 ->before(TriggerEvent::INSERT)
                 ->on(self::TABLE_NAME)
@@ -167,10 +165,9 @@ public function test_create_trigger_before_insert() : void
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->triggerExists(self::TRIGGER_NAME, self::TABLE_NAME));
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_NAME)
                 ->columns('name')
@@ -178,11 +175,9 @@ public function test_create_trigger_before_insert() : void
                 ->toSql()
         );
 
-        $logs = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_LOG))
-                    ->toSql()
-            )
+        $logs = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_LOG))
+                ->toSql()
         );
 
         self::assertCount(1, $logs);
@@ -191,20 +186,19 @@ public function test_create_trigger_before_insert() : void
 
     public function test_create_trigger_with_when_condition() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->trigger(self::TRIGGER_NAME)
                 ->before(TriggerEvent::INSERT)
                 ->on(self::TABLE_NAME)
                 ->forEachRow()
-                ->when(raw_cond('NEW.value <> 0'))
+                ->when(ne(col('value', 'new'), literal(0)))
                 ->execute(self::FUNCTION_NAME)
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->triggerExists(self::TRIGGER_NAME, self::TABLE_NAME));
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_NAME)
                 ->columns('name', 'value')
@@ -212,15 +206,13 @@ public function test_create_trigger_with_when_condition() : void
                 ->toSql()
         );
 
-        $logs = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_LOG))
-                    ->toSql()
-            )
+        $logs = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_LOG))
+                ->toSql()
         );
         self::assertCount(0, $logs);
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_NAME)
                 ->columns('name', 'value')
@@ -228,18 +220,16 @@ public function test_create_trigger_with_when_condition() : void
                 ->toSql()
         );
 
-        $logs = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_LOG))
-                    ->toSql()
-            )
+        $logs = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_LOG))
+                ->toSql()
         );
         self::assertCount(1, $logs);
     }
 
     public function test_drop_trigger() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->trigger(self::TRIGGER_NAME)
                 ->before(TriggerEvent::INSERT)
                 ->on(self::TABLE_NAME)
@@ -250,18 +240,17 @@ public function test_drop_trigger() : void
 
         self::assertTrue($this->triggerExists(self::TRIGGER_NAME, self::TABLE_NAME));
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->trigger(self::TRIGGER_NAME)->on(self::TABLE_NAME)
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->triggerExists(self::TRIGGER_NAME, self::TABLE_NAME));
     }
 
     public function test_drop_trigger_cascade() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->trigger(self::TRIGGER_NAME)
                 ->before(TriggerEvent::INSERT)
                 ->on(self::TABLE_NAME)
@@ -270,49 +259,36 @@ public function test_drop_trigger_cascade() : void
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->trigger(self::TRIGGER_NAME)->on(self::TABLE_NAME)->cascade()
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->triggerExists(self::TRIGGER_NAME, self::TABLE_NAME));
     }
 
     public function test_drop_trigger_if_exists() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             drop()->trigger(self::TRIGGER_NAME)->ifExists()->on(self::TABLE_NAME)
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
-    }
-
-    protected function dropFunctionIfExists(string $name) : void
-    {
-        $this->execute("DROP FUNCTION IF EXISTS {$name} CASCADE");
-    }
-
-    protected function dropTriggerIfExists(string $triggerName, string $tableName) : void
-    {
-        $this->execute("DROP TRIGGER IF EXISTS {$triggerName} ON {$tableName} CASCADE");
     }
 
     protected function triggerExists(string $triggerName, string $tableName) : bool
     {
-        $row = $this->fetchOne(
-            $this->execute(
-                "SELECT EXISTS(
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            "SELECT EXISTS(
                     SELECT 1 FROM pg_trigger t
                     JOIN pg_class c ON t.tgrelid = c.oid
                     WHERE t.tgname = '{$triggerName}'
                     AND c.relname = '{$tableName}'
                     AND NOT t.tgisinternal
                 ) AS trigger_exists"
-            )
         );
 
-        return $row['trigger_exists'] === 't';
+        return $row['trigger_exists'] === true;
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TruncateDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TruncateDatabaseTest.php
index 545d603fce..502c7277ea 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TruncateDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TruncateDatabaseTest.php
@@ -7,9 +7,9 @@
 use function Flow\PostgreSql\DSL\{
     col,
     column,
+    column_type_serial,
+    column_type_varchar,
     create,
-    data_type_serial,
-    data_type_varchar,
     desc,
     insert,
     literal,
@@ -19,8 +19,9 @@
     table,
     truncate_table
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class TruncateDatabaseTest extends DatabaseTestCase
+final class TruncateDatabaseTest extends PostgreSqlTestCase
 {
     private const SCHEMA_NAME = 'flow_postgres_test_truncate_schema';
 
@@ -34,23 +35,23 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_ONE)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_TWO)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_ONE)
                 ->columns('name')
@@ -60,7 +61,7 @@ protected function setUp() : void
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_TWO)
                 ->columns('name')
@@ -72,43 +73,37 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropTableIfExists(self::TABLE_TWO);
-        $this->dropTableIfExists(self::TABLE_ONE);
-        $this->execute('DROP SCHEMA IF EXISTS ' . self::SCHEMA_NAME . ' CASCADE');
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_TWO);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_ONE);
+        $this->pgsqlContext()->client()->execute('DROP SCHEMA IF EXISTS ' . self::SCHEMA_NAME . ' CASCADE');
 
         parent::tearDown();
     }
 
     public function test_truncate_cascade() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             truncate_table(self::TABLE_ONE)->cascade()->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_ONE))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_ONE))->toSql()
         );
         self::assertCount(0, $rows);
     }
 
     public function test_truncate_continue_identity() : void
     {
-        $lastRow = $this->fetchOne(
-            $this->execute(
-                select(col('id'))->from(table(self::TABLE_ONE))->orderBy(desc(col('id')))->limit(1)->toSql()
-            )
+        $lastRow = $this->pgsqlContext()->client()->fetchOne(
+            select(col('id'))->from(table(self::TABLE_ONE))->orderBy(desc(col('id')))->limit(1)->toSql()
         );
         $lastId = (int) $lastRow['id'];
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             truncate_table(self::TABLE_ONE)->continueIdentity()->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_ONE)
                 ->columns('name')
@@ -116,45 +111,37 @@ public function test_truncate_continue_identity() : void
                 ->toSql()
         );
 
-        $row = $this->fetchOne(
-            $this->execute(
-                select(star())->from(table(self::TABLE_ONE))->toSql()
-            )
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(star())->from(table(self::TABLE_ONE))->toSql()
         );
 
-        self::assertSame((string) ($lastId + 1), $row['id']);
+        self::assertSame($lastId + 1, $row['id']);
     }
 
     public function test_truncate_multiple_tables() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             truncate_table(self::TABLE_ONE, self::TABLE_TWO)->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $rowsOne = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_ONE))->toSql()
-            )
+        $rowsOne = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_ONE))->toSql()
         );
         self::assertCount(0, $rowsOne);
 
-        $rowsTwo = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_TWO))->toSql()
-            )
+        $rowsTwo = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_TWO))->toSql()
         );
         self::assertCount(0, $rowsTwo);
     }
 
     public function test_truncate_restart_identity() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             truncate_table(self::TABLE_ONE)->restartIdentity()->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_ONE)
                 ->columns('name')
@@ -162,74 +149,58 @@ public function test_truncate_restart_identity() : void
                 ->toSql()
         );
 
-        $row = $this->fetchOne(
-            $this->execute(
-                select(star())->from(table(self::TABLE_ONE))->toSql()
-            )
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(star())->from(table(self::TABLE_ONE))->toSql()
         );
 
-        self::assertSame('1', $row['id']);
+        self::assertSame(1, $row['id']);
         self::assertSame('NewRow', $row['name']);
     }
 
     public function test_truncate_restrict() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             truncate_table(self::TABLE_ONE)->restrict()->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_ONE))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_ONE))->toSql()
         );
         self::assertCount(0, $rows);
     }
 
     public function test_truncate_single_table() : void
     {
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_ONE))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_ONE))->toSql()
         );
         self::assertCount(3, $rows);
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             truncate_table(self::TABLE_ONE)->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_ONE))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_ONE))->toSql()
         );
         self::assertCount(0, $rows);
 
-        $rowsTwo = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::TABLE_TWO))->toSql()
-            )
+        $rowsTwo = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::TABLE_TWO))->toSql()
         );
         self::assertCount(2, $rowsTwo);
     }
 
     public function test_truncate_with_restart_identity_and_cascade() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             truncate_table(self::TABLE_ONE, self::TABLE_TWO)
                 ->restartIdentity()
                 ->cascade()
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_ONE)
                 ->columns('name')
@@ -237,28 +208,26 @@ public function test_truncate_with_restart_identity_and_cascade() : void
                 ->toSql()
         );
 
-        $row = $this->fetchOne(
-            $this->execute(
-                select(star())->from(table(self::TABLE_ONE))->toSql()
-            )
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(star())->from(table(self::TABLE_ONE))->toSql()
         );
 
-        self::assertSame('1', $row['id']);
+        self::assertSame(1, $row['id']);
     }
 
     public function test_truncate_with_schema_qualified_table() : void
     {
-        $this->execute('CREATE SCHEMA IF NOT EXISTS ' . self::SCHEMA_NAME);
+        $this->pgsqlContext()->client()->execute('CREATE SCHEMA IF NOT EXISTS ' . self::SCHEMA_NAME);
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::SCHEMA_TABLE, self::SCHEMA_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::SCHEMA_NAME . '.' . self::SCHEMA_TABLE)
                 ->columns('name')
@@ -267,23 +236,17 @@ public function test_truncate_with_schema_qualified_table() : void
                 ->toSql()
         );
 
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::SCHEMA_TABLE, self::SCHEMA_NAME))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::SCHEMA_TABLE, self::SCHEMA_NAME))->toSql()
         );
         self::assertCount(2, $rows);
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             truncate_table(self::SCHEMA_NAME . '.' . self::SCHEMA_TABLE)->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $rows = $this->fetchAll(
-            $this->execute(
-                select(star())->from(table(self::SCHEMA_TABLE, self::SCHEMA_NAME))->toSql()
-            )
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::SCHEMA_TABLE, self::SCHEMA_NAME))->toSql()
         );
         self::assertCount(0, $rows);
     }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TypeDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TypeDatabaseTest.php
index 905c6b2abe..425077a5c5 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TypeDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/TypeDatabaseTest.php
@@ -7,9 +7,9 @@
 use function Flow\PostgreSql\DSL\{
     alter,
     column,
+    column_type_serial,
+    column_type_varchar,
     create,
-    data_type_serial,
-    data_type_varchar,
     drop,
     insert,
     literal,
@@ -18,11 +18,11 @@
     star,
     table
 };
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
-
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 use Flow\PostgreSql\QueryBuilder\Schema\Type\TypeAttribute;
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class TypeDatabaseTest extends DatabaseTestCase
+final class TypeDatabaseTest extends PostgreSqlTestCase
 {
     private const COMPOSITE_TYPE = 'flow_postgres_address_type';
 
@@ -34,32 +34,30 @@ final class TypeDatabaseTest extends DatabaseTestCase
 
     protected function tearDown() : void
     {
-        $this->dropTableIfExists(self::TABLE_NAME);
-        $this->dropTypeIfExists(self::ENUM_TYPE);
-        $this->dropTypeIfExists(self::COMPOSITE_TYPE);
-        $this->dropTypeIfExists(self::RANGE_TYPE);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_NAME);
+        $this->pgsqlContext()->dropTypeIfExists(self::ENUM_TYPE);
+        $this->pgsqlContext()->dropTypeIfExists(self::COMPOSITE_TYPE);
+        $this->pgsqlContext()->dropTypeIfExists(self::RANGE_TYPE);
 
         parent::tearDown();
     }
 
     public function test_alter_enum_add_value() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->enumType(self::ENUM_TYPE)
                 ->labels('pending', 'active')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->enumType(self::ENUM_TYPE)
                 ->addValue('completed')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $values = $this->fetchAll(
-            $this->execute('SELECT unnest(enum_range(NULL::' . self::ENUM_TYPE . ')) AS val')
+        $values = $this->pgsqlContext()->client()->fetchAll(
+            'SELECT unnest(enum_range(NULL::' . self::ENUM_TYPE . ')) AS val'
         );
 
         $enumValues = \array_column($values, 'val');
@@ -68,22 +66,20 @@ public function test_alter_enum_add_value() : void
 
     public function test_alter_enum_add_value_after() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->enumType(self::ENUM_TYPE)
                 ->labels('first', 'last')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->enumType(self::ENUM_TYPE)
                 ->addValueAfter('middle', 'first')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $values = $this->fetchAll(
-            $this->execute('SELECT unnest(enum_range(NULL::' . self::ENUM_TYPE . ')) AS val')
+        $values = $this->pgsqlContext()->client()->fetchAll(
+            'SELECT unnest(enum_range(NULL::' . self::ENUM_TYPE . ')) AS val'
         );
 
         self::assertSame('first', $values[0]['val']);
@@ -93,22 +89,20 @@ public function test_alter_enum_add_value_after() : void
 
     public function test_alter_enum_add_value_before() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->enumType(self::ENUM_TYPE)
                 ->labels('first', 'last')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->enumType(self::ENUM_TYPE)
                 ->addValueBefore('middle', 'last')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $values = $this->fetchAll(
-            $this->execute('SELECT unnest(enum_range(NULL::' . self::ENUM_TYPE . ')) AS val')
+        $values = $this->pgsqlContext()->client()->fetchAll(
+            'SELECT unnest(enum_range(NULL::' . self::ENUM_TYPE . ')) AS val'
         );
 
         self::assertSame('first', $values[0]['val']);
@@ -118,40 +112,38 @@ public function test_alter_enum_add_value_before() : void
 
     public function test_alter_enum_add_value_if_not_exists() : void
     {
-        $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             create()->enumType(self::ENUM_TYPE)
                 ->labels('pending', 'active')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->enumType(self::ENUM_TYPE)
                 ->addValue('active')
                 ->ifNotExists()
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_alter_enum_rename_value() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->enumType(self::ENUM_TYPE)
                 ->labels('old_name', 'other')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             alter()->enumType(self::ENUM_TYPE)
                 ->renameValue('old_name', 'new_name')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $values = $this->fetchAll(
-            $this->execute('SELECT unnest(enum_range(NULL::' . self::ENUM_TYPE . ')) AS val')
+        $values = $this->pgsqlContext()->client()->fetchAll(
+            'SELECT unnest(enum_range(NULL::' . self::ENUM_TYPE . ')) AS val'
         );
 
         $enumValues = \array_column($values, 'val');
@@ -161,48 +153,45 @@ public function test_alter_enum_rename_value() : void
 
     public function test_create_composite_type() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->compositeType(self::COMPOSITE_TYPE)
                 ->attributes(
-                    TypeAttribute::of('street', data_type_varchar(100)),
-                    TypeAttribute::of('city', data_type_varchar(50)),
-                    TypeAttribute::of('postal_code', data_type_varchar(20))
+                    TypeAttribute::of('street', column_type_varchar(100)),
+                    TypeAttribute::of('city', column_type_varchar(50)),
+                    TypeAttribute::of('postal_code', column_type_varchar(20))
                 )
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->typeExists(self::COMPOSITE_TYPE));
     }
 
     public function test_create_composite_type_and_use_in_table() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->compositeType(self::COMPOSITE_TYPE)
                 ->attributes(
-                    TypeAttribute::of('street', data_type_varchar(100)),
-                    TypeAttribute::of('city', data_type_varchar(50))
+                    TypeAttribute::of('street', column_type_varchar(100)),
+                    TypeAttribute::of('city', column_type_varchar(50))
                 )
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100)))
-                ->column(column('address', DataType::custom(self::COMPOSITE_TYPE)))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100)))
+                ->column(column('address', ColumnType::custom(self::COMPOSITE_TYPE)))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             'INSERT INTO ' . self::TABLE_NAME . " (name, address) VALUES ('John', ROW('123 Main St', 'NYC'))"
         );
 
-        $row = $this->fetchOne(
-            $this->execute(
-                'SELECT name, (address).street, (address).city FROM ' . self::TABLE_NAME
-            )
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            'SELECT name, (address).street, (address).city FROM ' . self::TABLE_NAME
         );
 
         self::assertSame('John', $row['name']);
@@ -212,33 +201,32 @@ public function test_create_composite_type_and_use_in_table() : void
 
     public function test_create_enum_type() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->enumType(self::ENUM_TYPE)
                 ->labels('pending', 'active', 'completed', 'cancelled')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->typeExists(self::ENUM_TYPE));
     }
 
     public function test_create_enum_type_and_use_in_table() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->enumType(self::ENUM_TYPE)
                 ->labels('pending', 'active', 'completed')
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('status', DataType::custom(self::ENUM_TYPE))->notNull())
+                ->column(column('id', column_type_serial()))
+                ->column(column('status', ColumnType::custom(self::ENUM_TYPE))->notNull())
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_NAME)
                 ->columns('status')
@@ -246,10 +234,8 @@ public function test_create_enum_type_and_use_in_table() : void
                 ->toSql()
         );
 
-        $row = $this->fetchOne(
-            $this->execute(
-                select(star())->from(table(self::TABLE_NAME))->toSql()
-            )
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            select(star())->from(table(self::TABLE_NAME))->toSql()
         );
 
         self::assertSame('active', $row['status']);
@@ -257,19 +243,18 @@ public function test_create_enum_type_and_use_in_table() : void
 
     public function test_create_range_type() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->rangeType(self::RANGE_TYPE)
                 ->subtype('float8')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertTrue($this->typeExists(self::RANGE_TYPE));
     }
 
     public function test_drop_type() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->enumType(self::ENUM_TYPE)
                 ->labels('a', 'b')
                 ->toSql()
@@ -277,58 +262,51 @@ public function test_drop_type() : void
 
         self::assertTrue($this->typeExists(self::ENUM_TYPE));
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->type(self::ENUM_TYPE)->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->typeExists(self::ENUM_TYPE));
     }
 
     public function test_drop_type_cascade() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->enumType(self::ENUM_TYPE)
                 ->labels('a', 'b')
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('status', DataType::custom(self::ENUM_TYPE)))
+                ->column(column('id', column_type_serial()))
+                ->column(column('status', ColumnType::custom(self::ENUM_TYPE)))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             drop()->type(self::ENUM_TYPE)->cascade()->toSql()
         );
 
-        self::assertNotFalse($result);
         self::assertFalse($this->typeExists(self::ENUM_TYPE));
     }
 
     public function test_drop_type_if_exists() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             drop()->type(self::ENUM_TYPE)->ifExists()->toSql()
         );
-
-        self::assertNotFalse($result);
-    }
-
-    protected function dropTypeIfExists(string $name) : void
-    {
-        $this->execute("DROP TYPE IF EXISTS {$name} CASCADE");
     }
 
     protected function typeExists(string $name) : bool
     {
-        $row = $this->fetchOne(
-            $this->execute("SELECT EXISTS(SELECT 1 FROM pg_type WHERE typname = '{$name}') AS type_exists")
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            "SELECT EXISTS(SELECT 1 FROM pg_type WHERE typname = '{$name}') AS type_exists"
         );
 
-        return $row['type_exists'] === 't';
+        return $row['type_exists'] === true;
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/UpdateDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/UpdateDatabaseTest.php
index 1e8b938c88..da9976e5cf 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/UpdateDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/UpdateDatabaseTest.php
@@ -6,14 +6,14 @@
 
 use function Flow\PostgreSql\DSL\{
     agg_count,
+    and_,
     col,
     column,
-    cond_and,
+    column_type_decimal,
+    column_type_integer,
+    column_type_serial,
+    column_type_varchar,
     create,
-    data_type_decimal,
-    data_type_integer,
-    data_type_serial,
-    data_type_varchar,
     eq,
     gt,
     insert,
@@ -24,8 +24,9 @@
     table,
     update
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class UpdateDatabaseTest extends DatabaseTestCase
+final class UpdateDatabaseTest extends PostgreSqlTestCase
 {
     private const SCHEMA_NAME = 'flow_postgres_test_update_schema';
 
@@ -39,27 +40,27 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_DEPARTMENTS)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('bonus_rate', data_type_decimal(3, 2))->default(1))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('bonus_rate', column_type_decimal(3, 2))->default(1))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_EMPLOYEES)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('salary', data_type_decimal(10, 2))->default(0))
-                ->column(column('department_id', data_type_integer()))
-                ->column(column('status', data_type_varchar(50))->default('active'))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('salary', column_type_decimal(10, 2))->default(0))
+                ->column(column('department_id', column_type_integer()))
+                ->column(column('status', column_type_varchar(50))->default('active'))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_DEPARTMENTS)
                 ->columns('name', 'bonus_rate')
@@ -69,7 +70,7 @@ protected function setUp() : void
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_EMPLOYEES)
                 ->columns('name', 'salary', 'department_id', 'status')
@@ -83,9 +84,9 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropTableIfExists(self::TABLE_EMPLOYEES);
-        $this->dropTableIfExists(self::TABLE_DEPARTMENTS);
-        $this->execute('DROP SCHEMA IF EXISTS ' . self::SCHEMA_NAME . ' CASCADE');
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_EMPLOYEES);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_DEPARTMENTS);
+        $this->pgsqlContext()->dropSchemaIfExists(self::SCHEMA_NAME);
 
         parent::tearDown();
     }
@@ -96,19 +97,15 @@ public function test_basic_update() : void
             ->update(self::TABLE_EMPLOYEES)
             ->set('status', literal('updated'));
 
-        $result = $this->execute($query->toSql());
+        self::assertSame(4, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        self::assertNotFalse($result);
-        self::assertSame(4, $this->affectedRows($result));
-
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(agg_count(star())->as('cnt'))
                 ->from(table(self::TABLE_EMPLOYEES))
                 ->where(eq(col('status'), literal('updated')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
-        self::assertSame('4', $row['cnt']);
+        self::assertSame(4, $row['cnt']);
     }
 
     public function test_update_multiple_columns() : void
@@ -119,17 +116,14 @@ public function test_update_multiple_columns() : void
             ->set('status', literal('promoted'))
             ->where(eq(col('name'), literal('Bob')));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('salary'), col('status'))
                 ->from(table(self::TABLE_EMPLOYEES))
                 ->where(eq(col('name'), literal('Bob')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame('75000.00', $row['salary']);
         self::assertSame('promoted', $row['status']);
     }
@@ -141,7 +135,7 @@ public function test_update_with_from_clause() : void
             ->set('status', literal('bonus_applied'))
             ->from(table(self::TABLE_DEPARTMENTS))
             ->where(
-                cond_and(
+                and_(
                     eq(
                         col('department_id', self::TABLE_EMPLOYEES),
                         col('id', self::TABLE_DEPARTMENTS)
@@ -150,10 +144,7 @@ public function test_update_with_from_clause() : void
                 )
             );
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertGreaterThanOrEqual(1, $this->affectedRows($result));
+        self::assertGreaterThanOrEqual(1, $this->pgsqlContext()->client()->execute($query->toSql()));
     }
 
     public function test_update_with_returning() : void
@@ -164,10 +155,8 @@ public function test_update_with_returning() : void
             ->where(eq(col('name'), literal('Charlie')))
             ->returning(col('id'), col('name'), col('salary'));
 
-        $result = $this->execute($query->toSql());
+        $row = $this->pgsqlContext()->client()->fetchOne($query->toSql());
 
-        self::assertNotFalse($result);
-        $row = $this->fetchOne($result);
         self::assertSame('Charlie', $row['name']);
         self::assertSame('80000.00', $row['salary']);
     }
@@ -180,10 +169,8 @@ public function test_update_with_returning_all() : void
             ->where(eq(col('name'), literal('Diana')))
             ->returningAll();
 
-        $result = $this->execute($query->toSql());
+        $row = $this->pgsqlContext()->client()->fetchOne($query->toSql());
 
-        self::assertNotFalse($result);
-        $row = $this->fetchOne($result);
         self::assertArrayHasKey('id', $row);
         self::assertArrayHasKey('name', $row);
         self::assertArrayHasKey('salary', $row);
@@ -194,18 +181,20 @@ public function test_update_with_returning_all() : void
 
     public function test_update_with_schema_qualified_table() : void
     {
-        $this->execute('CREATE SCHEMA IF NOT EXISTS ' . self::SCHEMA_NAME);
+        $this->pgsqlContext()->client()->execute(
+            create()->schema(self::SCHEMA_NAME)->ifNotExists()->toSql()
+        );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::SCHEMA_TABLE, self::SCHEMA_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('status', data_type_varchar(50))->default('active'))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('status', column_type_varchar(50))->default('active'))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::SCHEMA_NAME . '.' . self::SCHEMA_TABLE)
                 ->columns('name', 'status')
@@ -218,18 +207,14 @@ public function test_update_with_schema_qualified_table() : void
             ->set('status', literal('updated'))
             ->where(eq(col('name'), literal('Alice')));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(1, $this->affectedRows($result));
+        self::assertSame(1, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('status'))
                 ->from(table(self::SCHEMA_TABLE, self::SCHEMA_NAME))
                 ->where(eq(col('name'), literal('Alice')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame('updated', $row['status']);
     }
 
@@ -240,18 +225,14 @@ public function test_update_with_where() : void
             ->set('salary', literal(70000))
             ->where(eq(col('name'), literal('Alice')));
 
-        $result = $this->execute($query->toSql());
-
-        self::assertNotFalse($result);
-        self::assertSame(1, $this->affectedRows($result));
+        self::assertSame(1, $this->pgsqlContext()->client()->execute($query->toSql()));
 
-        $check = $this->execute(
+        $row = $this->pgsqlContext()->client()->fetchOne(
             select(col('salary'))
                 ->from(table(self::TABLE_EMPLOYEES))
                 ->where(eq(col('name'), literal('Alice')))
                 ->toSql()
         );
-        $row = $this->fetchOne($check);
         self::assertSame('70000.00', $row['salary']);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/UtilityDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/UtilityDatabaseTest.php
index 846f6095e3..18d64ea87c 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/UtilityDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/UtilityDatabaseTest.php
@@ -8,11 +8,11 @@
     analyze,
     cluster,
     column,
+    column_type_integer,
+    column_type_serial,
+    column_type_varchar,
     comment,
     create,
-    data_type_integer,
-    data_type_serial,
-    data_type_varchar,
     explain,
     insert,
     literal,
@@ -24,8 +24,9 @@
     vacuum
 };
 use Flow\PostgreSql\QueryBuilder\Utility\{CommentTarget, LockMode};
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class UtilityDatabaseTest extends DatabaseTestCase
+final class UtilityDatabaseTest extends PostgreSqlTestCase
 {
     private const INDEX_NAME = 'flow_postgres_utility_idx';
 
@@ -35,16 +36,16 @@ protected function setUp() : void
     {
         parent::setUp();
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             create()->table(self::TABLE_NAME)
-                ->column(column('id', data_type_serial()))
-                ->column(column('name', data_type_varchar(100))->notNull())
-                ->column(column('value', data_type_integer())->default(0))
+                ->column(column('id', column_type_serial()))
+                ->column(column('name', column_type_varchar(100))->notNull())
+                ->column(column('value', column_type_integer())->default(0))
                 ->constraint(primary_key('id'))
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_NAME)
                 ->columns('name', 'value')
@@ -56,106 +57,102 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropIndexIfExists(self::INDEX_NAME);
-        $this->dropTableIfExists(self::TABLE_NAME);
+        $this->pgsqlContext()->dropIndexIfExists(self::INDEX_NAME);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_NAME);
 
         parent::tearDown();
     }
 
     public function test_analyze_specific_columns() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             analyze()->table(self::TABLE_NAME, 'name', 'value')
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_analyze_table() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             analyze()->tables(self::TABLE_NAME)
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_analyze_verbose() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             analyze()->verbose()->tables(self::TABLE_NAME)
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_cluster_table_on_index() : void
     {
-        $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             create()->index(self::INDEX_NAME)
                 ->on(self::TABLE_NAME)
                 ->columns('name')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             cluster()->table(self::TABLE_NAME)->using(self::INDEX_NAME)
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_cluster_verbose() : void
     {
-        $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             create()->index(self::INDEX_NAME)
                 ->on(self::TABLE_NAME)
                 ->columns('name')
                 ->toSql()
         );
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             cluster()->table(self::TABLE_NAME)->using(self::INDEX_NAME)
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             cluster()->verbose()->table(self::TABLE_NAME)
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_comment_on_column() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             comment(CommentTarget::COLUMN, self::TABLE_NAME . '.name')
                 ->is('Name of the entity')
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_comment_on_table() : void
     {
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             comment(CommentTarget::TABLE, self::TABLE_NAME)
                 ->is('This is a test table for utility tests')
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $row = $this->fetchOne(
-            $this->execute(
-                "SELECT obj_description('" . self::TABLE_NAME . "'::regclass, 'pg_class') AS comment"
-            )
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            "SELECT obj_description('" . self::TABLE_NAME . "'::regclass, 'pg_class') AS comment"
         );
 
         self::assertSame('This is a test table for utility tests', $row['comment']);
@@ -163,24 +160,20 @@ public function test_comment_on_table() : void
 
     public function test_comment_remove() : void
     {
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             comment(CommentTarget::TABLE, self::TABLE_NAME)
                 ->is('Some comment')
                 ->toSql()
         );
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute(
             comment(CommentTarget::TABLE, self::TABLE_NAME)
                 ->isNull()
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $row = $this->fetchOne(
-            $this->execute(
-                "SELECT obj_description('" . self::TABLE_NAME . "'::regclass, 'pg_class') AS comment"
-            )
+        $row = $this->pgsqlContext()->client()->fetchOne(
+            "SELECT obj_description('" . self::TABLE_NAME . "'::regclass, 'pg_class') AS comment"
         );
 
         self::assertNull($row['comment']);
@@ -190,14 +183,10 @@ public function test_explain_analyze() : void
     {
         $selectQuery = select(star())->from(table(self::TABLE_NAME));
 
-        $result = $this->execute(
+        $rows = $this->pgsqlContext()->client()->fetchAll(
             explain($selectQuery)->analyze()
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
-
-        $rows = $this->fetchAll($result);
         self::assertNotEmpty($rows);
     }
 
@@ -205,14 +194,10 @@ public function test_explain_select() : void
     {
         $selectQuery = select(star())->from(table(self::TABLE_NAME));
 
-        $result = $this->execute(
+        $rows = $this->pgsqlContext()->client()->fetchAll(
             explain($selectQuery)
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
-
-        $rows = $this->fetchAll($result);
         self::assertNotEmpty($rows);
         self::assertArrayHasKey('QUERY PLAN', $rows[0]);
     }
@@ -221,86 +206,82 @@ public function test_explain_verbose() : void
     {
         $selectQuery = select(star())->from(table(self::TABLE_NAME));
 
-        $result = $this->execute(
+        $rows = $this->pgsqlContext()->client()->fetchAll(
             explain($selectQuery)->verbose()
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
-
-        $rows = $this->fetchAll($result);
         self::assertNotEmpty($rows);
     }
 
     public function test_lock_table() : void
     {
-        $this->execute('BEGIN');
+        $this->expectNotToPerformAssertions();
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute('BEGIN');
+
+        $this->pgsqlContext()->client()->execute(
             lock_table(self::TABLE_NAME)
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $this->execute('COMMIT');
+        $this->pgsqlContext()->client()->execute('COMMIT');
     }
 
     public function test_lock_table_nowait() : void
     {
-        $this->execute('BEGIN');
+        $this->expectNotToPerformAssertions();
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute('BEGIN');
+
+        $this->pgsqlContext()->client()->execute(
             lock_table(self::TABLE_NAME)->noWait()
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $this->execute('COMMIT');
+        $this->pgsqlContext()->client()->execute('COMMIT');
     }
 
     public function test_lock_table_with_mode() : void
     {
-        $this->execute('BEGIN');
+        $this->expectNotToPerformAssertions();
 
-        $result = $this->execute(
+        $this->pgsqlContext()->client()->execute('BEGIN');
+
+        $this->pgsqlContext()->client()->execute(
             lock_table(self::TABLE_NAME)->inMode(LockMode::SHARE)
                 ->toSql()
         );
 
-        self::assertNotFalse($result);
-
-        $this->execute('COMMIT');
+        $this->pgsqlContext()->client()->execute('COMMIT');
     }
 
     public function test_vacuum_analyze_table() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             vacuum()->analyze()->tables(self::TABLE_NAME)
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_vacuum_full() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             vacuum()->full()->tables(self::TABLE_NAME)
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 
     public function test_vacuum_table() : void
     {
-        $result = $this->execute(
+        $this->expectNotToPerformAssertions();
+
+        $this->pgsqlContext()->client()->execute(
             vacuum()->tables(self::TABLE_NAME)
                 ->toSql()
         );
-
-        self::assertNotFalse($result);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/ViewDatabaseTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/ViewDatabaseTest.php
index bf855f8dc9..aca17c8f19 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/ViewDatabaseTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/Database/ViewDatabaseTest.php
@@ -5,12 +5,13 @@
 namespace Flow\PostgreSql\Tests\Integration\QueryBuilder\Database;
 
 use function Flow\PostgreSql\DSL\{
+    agg_count,
     col,
     column,
+    column_type_integer,
+    column_type_serial,
+    column_type_varchar,
     create,
-    data_type_integer,
-    data_type_serial,
-    data_type_varchar,
     drop,
     eq,
     gt,
@@ -21,8 +22,9 @@
     star,
     table
 };
+use Flow\PostgreSql\Tests\Integration\PostgreSqlTestCase;
 
-final class ViewDatabaseTest extends DatabaseTestCase
+final class ViewDatabaseTest extends PostgreSqlTestCase
 {
     private const MATVIEW_SIMPLE = 'flow_postgres_simple_matview';
 
@@ -37,13 +39,13 @@ protected function setUp() : void
         parent::setUp();
 
         $query = create()->table(self::TABLE_SOURCE)
-            ->column(column('id', data_type_serial()))
-            ->column(column('name', data_type_varchar(100)))
-            ->column(column('value', data_type_integer()));
+            ->column(column('id', column_type_serial()))
+            ->column(column('name', column_type_varchar(100)))
+            ->column(column('value', column_type_integer()));
 
-        $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        $this->execute(
+        $this->pgsqlContext()->client()->execute(
             insert()
                 ->into(self::TABLE_SOURCE)
                 ->columns('name', 'value')
@@ -57,10 +59,10 @@ protected function setUp() : void
 
     protected function tearDown() : void
     {
-        $this->dropViewIfExists(self::VIEW_SIMPLE);
-        $this->dropViewIfExists(self::VIEW_FILTERED);
-        $this->dropMaterializedViewIfExists(self::MATVIEW_SIMPLE);
-        $this->dropTableIfExists(self::TABLE_SOURCE);
+        $this->pgsqlContext()->dropViewIfExists(self::VIEW_SIMPLE);
+        $this->pgsqlContext()->dropViewIfExists(self::VIEW_FILTERED);
+        $this->pgsqlContext()->dropMaterializedViewIfExists(self::MATVIEW_SIMPLE);
+        $this->pgsqlContext()->dropTableIfExists(self::TABLE_SOURCE);
 
         parent::tearDown();
     }
@@ -72,12 +74,14 @@ public function test_create_materialized_view() : void
         $query = create()->materializedView(self::MATVIEW_SIMPLE)
             ->as($selectQuery);
 
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
-
-        $check = $this->execute("SELECT matviewname FROM pg_matviews WHERE matviewname = '" . self::MATVIEW_SIMPLE . "'");
-        $views = $this->fetchAll($check);
+        $views = $this->pgsqlContext()->client()->fetchAll(
+            select(col('matviewname'))
+                ->from(table('pg_matviews'))
+                ->where(eq(col('matviewname'), literal(self::MATVIEW_SIMPLE)))
+                ->toSql()
+        );
         self::assertCount(1, $views);
     }
 
@@ -85,22 +89,22 @@ public function test_create_or_replace_view() : void
     {
         $selectQuery1 = select(col('id'), col('name'))->from(table(self::TABLE_SOURCE));
         $createQuery1 = create()->view(self::VIEW_SIMPLE)->as($selectQuery1);
-        $this->execute($createQuery1->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery1->toSql());
 
         $selectQuery2 = select(col('id'), col('name'), col('value'))->from(table(self::TABLE_SOURCE));
         $replaceQuery = create()->view(self::VIEW_SIMPLE)
             ->orReplace()
             ->as($selectQuery2);
 
-        $result = $this->execute($replaceQuery->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($replaceQuery->toSql());
 
-        $check = $this->execute('SELECT * FROM ' . self::VIEW_SIMPLE);
-        $row = $this->fetchOne($check);
-        self::assertArrayHasKey('id', $row);
-        self::assertArrayHasKey('name', $row);
-        self::assertArrayHasKey('value', $row);
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::VIEW_SIMPLE))->toSql()
+        );
+        self::assertNotEmpty($rows);
+        self::assertArrayHasKey('id', $rows[0]);
+        self::assertArrayHasKey('name', $rows[0]);
+        self::assertArrayHasKey('value', $rows[0]);
     }
 
     public function test_create_view() : void
@@ -110,17 +114,14 @@ public function test_create_view() : void
         $query = create()->view(self::VIEW_SIMPLE)
             ->as($selectQuery);
 
-        $result = $this->execute($query->toSql());
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
-
-        $check = $this->execute(
+        $views = $this->pgsqlContext()->client()->fetchAll(
             select(col('table_name'))
                 ->from(table('information_schema.views'))
                 ->where(eq(col('table_name'), literal(self::VIEW_SIMPLE)))
                 ->toSql()
         );
-        $views = $this->fetchAll($check);
         self::assertCount(1, $views);
     }
 
@@ -133,12 +134,11 @@ public function test_create_view_with_filter() : void
         $query = create()->view(self::VIEW_FILTERED)
             ->as($selectQuery);
 
-        $this->execute($query->toSql());
-
-        $result = $this->execute('SELECT * FROM ' . self::VIEW_FILTERED);
+        $this->pgsqlContext()->client()->execute($query->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::VIEW_FILTERED))->toSql()
+        );
         self::assertCount(2, $rows);
     }
 
@@ -146,16 +146,18 @@ public function test_drop_materialized_view() : void
     {
         $selectQuery = select(star())->from(table(self::TABLE_SOURCE));
         $createQuery = create()->materializedView(self::MATVIEW_SIMPLE)->as($selectQuery);
-        $this->execute($createQuery->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
         $dropQuery = drop()->materializedView(self::MATVIEW_SIMPLE);
 
-        $result = $this->execute($dropQuery->toSql());
-
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($dropQuery->toSql());
 
-        $check = $this->execute("SELECT matviewname FROM pg_matviews WHERE matviewname = '" . self::MATVIEW_SIMPLE . "'");
-        $views = $this->fetchAll($check);
+        $views = $this->pgsqlContext()->client()->fetchAll(
+            select(col('matviewname'))
+                ->from(table('pg_matviews'))
+                ->where(eq(col('matviewname'), literal(self::MATVIEW_SIMPLE)))
+                ->toSql()
+        );
         self::assertCount(0, $views);
     }
 
@@ -163,26 +165,28 @@ public function test_drop_view() : void
     {
         $selectQuery = select(star())->from(table(self::TABLE_SOURCE));
         $createQuery = create()->view(self::VIEW_SIMPLE)->as($selectQuery);
-        $this->execute($createQuery->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
         $dropQuery = drop()->view(self::VIEW_SIMPLE);
 
-        $result = $this->execute($dropQuery->toSql());
+        $this->pgsqlContext()->client()->execute($dropQuery->toSql());
 
-        self::assertNotFalse($result);
-
-        $check = $this->execute("SELECT table_name FROM information_schema.views WHERE table_name = '" . self::VIEW_SIMPLE . "'");
-        $views = $this->fetchAll($check);
+        $views = $this->pgsqlContext()->client()->fetchAll(
+            select(col('table_name'))
+                ->from(table('information_schema.views'))
+                ->where(eq(col('table_name'), literal(self::VIEW_SIMPLE)))
+                ->toSql()
+        );
         self::assertCount(0, $views);
     }
 
     public function test_drop_view_if_exists() : void
     {
-        $dropQuery = drop()->view(self::VIEW_SIMPLE)->ifExists();
+        $this->expectNotToPerformAssertions();
 
-        $result = $this->execute($dropQuery->toSql());
+        $dropQuery = drop()->view(self::VIEW_SIMPLE)->ifExists();
 
-        self::assertNotFalse($result);
+        $this->pgsqlContext()->client()->execute($dropQuery->toSql());
     }
 
     public function test_materialized_view_returns_data() : void
@@ -191,12 +195,11 @@ public function test_materialized_view_returns_data() : void
 
         $createQuery = create()->materializedView(self::MATVIEW_SIMPLE)
             ->as($selectQuery);
-        $this->execute($createQuery->toSql());
-
-        $result = $this->execute('SELECT * FROM ' . self::MATVIEW_SIMPLE);
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
+        $rows = $this->pgsqlContext()->client()->fetchAll(
+            select(star())->from(table(self::MATVIEW_SIMPLE))->toSql()
+        );
         self::assertCount(4, $rows);
     }
 
@@ -206,20 +209,28 @@ public function test_refresh_materialized_view() : void
 
         $createQuery = create()->materializedView(self::MATVIEW_SIMPLE)
             ->as($selectQuery);
-        $this->execute($createQuery->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
-        $this->execute('INSERT INTO ' . self::TABLE_SOURCE . " (name, value) VALUES ('Item E', 500)");
+        $this->pgsqlContext()->client()->execute(
+            insert()
+                ->into(self::TABLE_SOURCE)
+                ->columns('name', 'value')
+                ->values(literal('Item E'), literal(500))
+                ->toSql()
+        );
 
-        $beforeRefresh = $this->execute('SELECT COUNT(*) as cnt FROM ' . self::MATVIEW_SIMPLE);
-        $beforeRow = $this->fetchOne($beforeRefresh);
-        self::assertSame('4', $beforeRow['cnt']);
+        $beforeRow = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count()->as('cnt'))->from(table(self::MATVIEW_SIMPLE))->toSql()
+        );
+        self::assertSame(4, $beforeRow['cnt']);
 
         $refreshQuery = refresh_materialized_view(self::MATVIEW_SIMPLE);
-        $this->execute($refreshQuery->toSql());
+        $this->pgsqlContext()->client()->execute($refreshQuery->toSql());
 
-        $afterRefresh = $this->execute('SELECT COUNT(*) as cnt FROM ' . self::MATVIEW_SIMPLE);
-        $afterRow = $this->fetchOne($afterRefresh);
-        self::assertSame('5', $afterRow['cnt']);
+        $afterRow = $this->pgsqlContext()->client()->fetchOne(
+            select(agg_count()->as('cnt'))->from(table(self::MATVIEW_SIMPLE))->toSql()
+        );
+        self::assertSame(5, $afterRow['cnt']);
     }
 
     public function test_view_returns_data() : void
@@ -228,14 +239,11 @@ public function test_view_returns_data() : void
 
         $createQuery = create()->view(self::VIEW_SIMPLE)
             ->as($selectQuery);
-        $this->execute($createQuery->toSql());
+        $this->pgsqlContext()->client()->execute($createQuery->toSql());
 
-        $result = $this->execute(
+        $rows = $this->pgsqlContext()->client()->fetchAll(
             select(star())->from(table(self::VIEW_SIMPLE))->toSql()
         );
-
-        self::assertNotFalse($result);
-        $rows = $this->fetchAll($result);
         self::assertCount(4, $rows);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/DeleteBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/DeleteBuilderTest.php
deleted file mode 100644
index 3f4fbd6a82..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/DeleteBuilderTest.php
+++ /dev/null
@@ -1,103 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{any_sub_select, col, delete, eq, literal, param, select, table};
-
-use Flow\PostgreSql\QueryBuilder\Condition\ComparisonOperator;
-
-final class DeleteBuilderTest extends PGQueryTestCase
-{
-    public function test_delete_with_alias() : void
-    {
-        $query = delete()
-            ->from('users', 'u')
-            ->where(eq(col('id', 'u'), literal(1)));
-
-        $this->assertDeleteQueryRoundTrip(
-            $query,
-            'DELETE FROM users u WHERE u.id = 1'
-        );
-    }
-
-    public function test_delete_with_parameters() : void
-    {
-        $query = delete()
-            ->from('users')
-            ->where(eq(col('id'), param(1)));
-
-        $this->assertDeleteQueryRoundTrip(
-            $query,
-            'DELETE FROM users WHERE id = $1'
-        );
-    }
-
-    public function test_delete_with_returning() : void
-    {
-        $query = delete()
-            ->from('users')
-            ->where(eq(col('id'), literal(1)))
-            ->returning(col('id'), col('name'));
-
-        $this->assertDeleteQueryRoundTrip(
-            $query,
-            'DELETE FROM users WHERE id = 1 RETURNING id, name'
-        );
-    }
-
-    public function test_delete_with_returning_all() : void
-    {
-        $query = delete()
-            ->from('users')
-            ->where(eq(col('id'), literal(1)))
-            ->returningAll();
-
-        $this->assertDeleteQueryRoundTrip(
-            $query,
-            'DELETE FROM users WHERE id = 1 RETURNING *'
-        );
-    }
-
-    public function test_delete_with_subquery_in_where() : void
-    {
-        $subquery = select()
-            ->select(col('user_id'))
-            ->from(table('inactive_users'));
-
-        $query = delete()
-            ->from('users')
-            ->where(any_sub_select(col('id'), ComparisonOperator::EQ, $subquery));
-
-        $this->assertDeleteQueryRoundTrip(
-            $query,
-            'DELETE FROM users WHERE id = ANY (SELECT user_id FROM inactive_users)'
-        );
-    }
-
-    public function test_delete_with_using() : void
-    {
-        $query = delete()
-            ->from('orders')
-            ->using(table('users'))
-            ->where(eq(col('orders.user_id'), col('users.id')));
-
-        $this->assertDeleteQueryRoundTrip(
-            $query,
-            'DELETE FROM orders USING users WHERE orders.user_id = users.id'
-        );
-    }
-
-    public function test_simple_delete() : void
-    {
-        $query = delete()
-            ->from('users')
-            ->where(eq(col('id'), literal(1)));
-
-        $this->assertDeleteQueryRoundTrip(
-            $query,
-            'DELETE FROM users WHERE id = 1'
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/DomainBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/DomainBuilderTest.php
deleted file mode 100644
index 48b093172e..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/DomainBuilderTest.php
+++ /dev/null
@@ -1,274 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{alter, create, drop};
-
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
-
-final class DomainBuilderTest extends PGQueryTestCase
-{
-    public function test_alter_domain_add_constraint() : void
-    {
-        $builder = alter()->domain('email')
-            ->addConstraint('valid_email', "VALUE ~ '^.+@.+$'");
-
-        $this->assertAlterDomainQuery(
-            $builder,
-            "ALTER DOMAIN email ADD CONSTRAINT valid_email CHECK (value ~ '^.+@.+$')"
-        );
-    }
-
-    public function test_alter_domain_drop_constraint() : void
-    {
-        $builder = alter()->domain('email')
-            ->dropConstraint('valid_email');
-
-        $this->assertAlterDomainQuery(
-            $builder,
-            'ALTER DOMAIN email DROP CONSTRAINT valid_email'
-        );
-    }
-
-    public function test_alter_domain_drop_constraint_cascade() : void
-    {
-        $builder = alter()->domain('email')
-            ->dropConstraint('valid_email')
-            ->cascade();
-
-        $this->assertAlterDomainQuery(
-            $builder,
-            'ALTER DOMAIN email DROP CONSTRAINT valid_email CASCADE'
-        );
-    }
-
-    public function test_alter_domain_drop_default() : void
-    {
-        $builder = alter()->domain('email')
-            ->dropDefault();
-
-        $this->assertAlterDomainQuery(
-            $builder,
-            'ALTER DOMAIN email DROP DEFAULT'
-        );
-    }
-
-    public function test_alter_domain_drop_not_null() : void
-    {
-        $builder = alter()->domain('email')
-            ->dropNotNull();
-
-        $this->assertAlterDomainQuery(
-            $builder,
-            'ALTER DOMAIN email DROP NOT NULL'
-        );
-    }
-
-    public function test_alter_domain_set_default() : void
-    {
-        $builder = alter()->domain('email')
-            ->setDefault("'default@example.com'");
-
-        $this->assertAlterDomainQuery(
-            $builder,
-            "ALTER DOMAIN email SET DEFAULT 'default@example.com'"
-        );
-    }
-
-    public function test_alter_domain_set_not_null() : void
-    {
-        $builder = alter()->domain('email')
-            ->setNotNull();
-
-        $this->assertAlterDomainQuery(
-            $builder,
-            'ALTER DOMAIN email SET NOT NULL'
-        );
-    }
-
-    public function test_alter_domain_validate_constraint() : void
-    {
-        $builder = alter()->domain('email')
-            ->validateConstraint('valid_email');
-
-        $this->assertAlterDomainQuery(
-            $builder,
-            'ALTER DOMAIN email VALIDATE CONSTRAINT valid_email'
-        );
-    }
-
-    public function test_create_domain_simple() : void
-    {
-        $builder = create()->domain('email')
-            ->as(DataType::text());
-
-        $this->assertCreateDomainQuery(
-            $builder,
-            'CREATE DOMAIN email AS pg_catalog.text'
-        );
-    }
-
-    public function test_create_domain_with_check() : void
-    {
-        $builder = create()->domain('positive_int')
-            ->as(DataType::integer())
-            ->check('VALUE > 0');
-
-        $this->assertCreateDomainQuery(
-            $builder,
-            'CREATE DOMAIN positive_int AS int CHECK (value > 0)'
-        );
-    }
-
-    public function test_create_domain_with_collation() : void
-    {
-        $builder = create()->domain('email')
-            ->as(DataType::text())
-            ->collate('en_US');
-
-        $this->assertCreateDomainQuery(
-            $builder,
-            'CREATE DOMAIN email AS pg_catalog.text COLLATE "en_US"'
-        );
-    }
-
-    public function test_create_domain_with_default() : void
-    {
-        $builder = create()->domain('email')
-            ->as(DataType::text())
-            ->default("'default@example.com'");
-
-        $this->assertCreateDomainQuery(
-            $builder,
-            "CREATE DOMAIN email AS pg_catalog.text DEFAULT 'default@example.com'"
-        );
-    }
-
-    public function test_create_domain_with_multiple_constraints() : void
-    {
-        $builder = create()->domain('email')
-            ->as(DataType::text())
-            ->notNull()
-            ->check("VALUE ~ '^.+@.+\$'");
-
-        $this->assertCreateDomainQuery(
-            $builder,
-            "CREATE DOMAIN email AS pg_catalog.text NOT NULL CHECK (value ~ '^.+@.+\$')"
-        );
-    }
-
-    public function test_create_domain_with_named_constraint() : void
-    {
-        $builder = create()->domain('positive_int')
-            ->as(DataType::integer())
-            ->constraint('positive_check')
-            ->check('VALUE > 0');
-
-        $this->assertCreateDomainQuery(
-            $builder,
-            'CREATE DOMAIN positive_int AS int CONSTRAINT positive_check CHECK (value > 0)'
-        );
-    }
-
-    public function test_create_domain_with_not_null() : void
-    {
-        $builder = create()->domain('email')
-            ->as(DataType::text())
-            ->notNull();
-
-        $this->assertCreateDomainQuery(
-            $builder,
-            'CREATE DOMAIN email AS pg_catalog.text NOT NULL'
-        );
-    }
-
-    public function test_create_domain_with_null() : void
-    {
-        $builder = create()->domain('email')
-            ->as(DataType::text())
-            ->null();
-
-        $this->assertCreateDomainQuery(
-            $builder,
-            'CREATE DOMAIN email AS pg_catalog.text NULL'
-        );
-    }
-
-    public function test_create_domain_with_schema() : void
-    {
-        $builder = create()->domain('public.email')
-            ->as(DataType::text());
-
-        $this->assertCreateDomainQuery(
-            $builder,
-            'CREATE DOMAIN public.email AS pg_catalog.text'
-        );
-    }
-
-    public function test_drop_domain_cascade() : void
-    {
-        $builder = drop()->domain('email')
-            ->cascade();
-
-        $this->assertDropDomainQuery(
-            $builder,
-            'DROP DOMAIN email CASCADE'
-        );
-    }
-
-    public function test_drop_domain_if_exists() : void
-    {
-        $builder = drop()->domain('email')
-            ->ifExists();
-
-        $this->assertDropDomainQuery(
-            $builder,
-            'DROP DOMAIN IF EXISTS email'
-        );
-    }
-
-    public function test_drop_domain_if_exists_cascade() : void
-    {
-        $builder = drop()->domain('email')
-            ->ifExists()
-            ->cascade();
-
-        $this->assertDropDomainQuery(
-            $builder,
-            'DROP DOMAIN IF EXISTS email CASCADE'
-        );
-    }
-
-    public function test_drop_domain_multiple() : void
-    {
-        $builder = drop()->domain('email', 'phone', 'url');
-
-        $this->assertDropDomainQuery(
-            $builder,
-            'DROP DOMAIN email, phone, url'
-        );
-    }
-
-    public function test_drop_domain_restrict() : void
-    {
-        $builder = drop()->domain('email')
-            ->restrict();
-
-        $this->assertDropDomainQuery(
-            $builder,
-            'DROP DOMAIN email'
-        );
-    }
-
-    public function test_drop_domain_simple() : void
-    {
-        $builder = drop()->domain('email');
-
-        $this->assertDropDomainQuery(
-            $builder,
-            'DROP DOMAIN email'
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/ExtensionBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/ExtensionBuilderTest.php
deleted file mode 100644
index 724effa096..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/ExtensionBuilderTest.php
+++ /dev/null
@@ -1,209 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{alter, create, drop};
-
-final class ExtensionBuilderTest extends PGQueryTestCase
-{
-    public function test_alter_extension_add_function() : void
-    {
-        $builder = alter()->extension('postgis')
-            ->addFunction('st_distance');
-
-        $this->assertAlterExtensionQuery(
-            $builder,
-            'ALTER EXTENSION postgis ADD FUNCTION st_distance'
-        );
-    }
-
-    public function test_alter_extension_add_table() : void
-    {
-        $builder = alter()->extension('postgis')
-            ->addTable('spatial_ref_sys');
-
-        $this->assertAlterExtensionQuery(
-            $builder,
-            'ALTER EXTENSION postgis ADD TABLE spatial_ref_sys'
-        );
-    }
-
-    public function test_alter_extension_drop_function() : void
-    {
-        $builder = alter()->extension('postgis')
-            ->dropFunction('st_distance');
-
-        $this->assertAlterExtensionQuery(
-            $builder,
-            'ALTER EXTENSION postgis DROP FUNCTION st_distance'
-        );
-    }
-
-    public function test_alter_extension_drop_table() : void
-    {
-        $builder = alter()->extension('postgis')
-            ->dropTable('spatial_ref_sys');
-
-        $this->assertAlterExtensionQuery(
-            $builder,
-            'ALTER EXTENSION postgis DROP TABLE spatial_ref_sys'
-        );
-    }
-
-    public function test_alter_extension_update() : void
-    {
-        $builder = alter()->extension('postgis')
-            ->update();
-
-        $this->assertAlterExtensionQuery(
-            $builder,
-            'ALTER EXTENSION postgis UPDATE'
-        );
-    }
-
-    public function test_alter_extension_update_to() : void
-    {
-        $builder = alter()->extension('postgis')
-            ->updateTo('3.1');
-
-        $this->assertAlterExtensionQuery(
-            $builder,
-            'ALTER EXTENSION postgis UPDATE TO "3.1"'
-        );
-    }
-
-    public function test_create_extension_full() : void
-    {
-        $builder = create()->extension('postgis')
-            ->ifNotExists()
-            ->schema('public')
-            ->version('3.0')
-            ->cascade();
-
-        $this->assertCreateExtensionQuery(
-            $builder,
-            'CREATE EXTENSION IF NOT EXISTS postgis SCHEMA public VERSION "3.0" CASCADE'
-        );
-    }
-
-    public function test_create_extension_if_not_exists() : void
-    {
-        $builder = create()->extension('postgis')
-            ->ifNotExists();
-
-        $this->assertCreateExtensionQuery(
-            $builder,
-            'CREATE EXTENSION IF NOT EXISTS postgis'
-        );
-    }
-
-    public function test_create_extension_simple() : void
-    {
-        $builder = create()->extension('uuid-ossp');
-
-        $this->assertCreateExtensionQuery(
-            $builder,
-            'CREATE EXTENSION "uuid-ossp"'
-        );
-    }
-
-    public function test_create_extension_with_cascade() : void
-    {
-        $builder = create()->extension('postgis')
-            ->cascade();
-
-        $this->assertCreateExtensionQuery(
-            $builder,
-            'CREATE EXTENSION postgis CASCADE'
-        );
-    }
-
-    public function test_create_extension_with_schema() : void
-    {
-        $builder = create()->extension('postgis')
-            ->schema('public');
-
-        $this->assertCreateExtensionQuery(
-            $builder,
-            'CREATE EXTENSION postgis SCHEMA public'
-        );
-    }
-
-    public function test_create_extension_with_version() : void
-    {
-        $builder = create()->extension('postgis')
-            ->version('3.0');
-
-        $this->assertCreateExtensionQuery(
-            $builder,
-            'CREATE EXTENSION postgis VERSION "3.0"'
-        );
-    }
-
-    public function test_drop_extension_cascade() : void
-    {
-        $builder = drop()->extension('postgis')
-            ->cascade();
-
-        $this->assertDropExtensionQuery(
-            $builder,
-            'DROP EXTENSION postgis CASCADE'
-        );
-    }
-
-    public function test_drop_extension_if_exists() : void
-    {
-        $builder = drop()->extension('postgis')
-            ->ifExists();
-
-        $this->assertDropExtensionQuery(
-            $builder,
-            'DROP EXTENSION IF EXISTS postgis'
-        );
-    }
-
-    public function test_drop_extension_if_exists_cascade() : void
-    {
-        $builder = drop()->extension('postgis')
-            ->ifExists()
-            ->cascade();
-
-        $this->assertDropExtensionQuery(
-            $builder,
-            'DROP EXTENSION IF EXISTS postgis CASCADE'
-        );
-    }
-
-    public function test_drop_extension_multiple() : void
-    {
-        $builder = drop()->extension('postgis', 'pg_trgm', 'uuid-ossp');
-
-        $this->assertDropExtensionQuery(
-            $builder,
-            'DROP EXTENSION postgis, pg_trgm, "uuid-ossp"'
-        );
-    }
-
-    public function test_drop_extension_restrict() : void
-    {
-        $builder = drop()->extension('postgis')
-            ->restrict();
-
-        $this->assertDropExtensionQuery(
-            $builder,
-            'DROP EXTENSION postgis'
-        );
-    }
-
-    public function test_drop_extension_simple() : void
-    {
-        $builder = drop()->extension('postgis');
-
-        $this->assertDropExtensionQuery(
-            $builder,
-            'DROP EXTENSION postgis'
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/InsertBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/InsertBuilderTest.php
deleted file mode 100644
index f6b613f0a4..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/InsertBuilderTest.php
+++ /dev/null
@@ -1,207 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{
-    col,
-    conflict_columns,
-    conflict_constraint,
-    eq,
-    insert,
-    literal,
-    param,
-    select,
-    table
-};
-
-final class InsertBuilderTest extends PGQueryTestCase
-{
-    public function test_insert_on_conflict_do_update_with_where() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('email', 'name', 'active')
-            ->values(literal('john@example.com'), literal('John'), literal(true))
-            ->onConflictDoUpdate(
-                conflict_columns(['email']),
-                ['name' => literal('Updated John')]
-            )
-            ->where(eq(col('users.active'), literal(true)));
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO users (email, name, active) VALUES ('john@example.com', 'John', true) ON CONFLICT (email) DO UPDATE SET name = 'Updated John' WHERE users.active = true"
-        );
-    }
-
-    public function test_insert_on_conflict_on_constraint() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('name', 'email')
-            ->values(literal('John'), literal('john@example.com'))
-            ->onConflictDoNothing(conflict_constraint('users_pkey'));
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO users (name, email) VALUES ('John', 'john@example.com') ON CONFLICT ON CONSTRAINT users_pkey DO NOTHING"
-        );
-    }
-
-    public function test_insert_select() : void
-    {
-        $selectQuery = select()
-            ->select(col('name'), col('email'))
-            ->from(table('archived_users'));
-
-        $query = insert()
-            ->into('users')
-            ->columns('name', 'email')
-            ->select($selectQuery);
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            'INSERT INTO users (name, email) SELECT name, email FROM archived_users'
-        );
-    }
-
-    public function test_insert_with_default_values() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->defaultValues();
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            'INSERT INTO users DEFAULT VALUES'
-        );
-    }
-
-    public function test_insert_with_multiple_rows() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('name', 'email')
-            ->values(literal('John'), literal('john@example.com'))
-            ->values(literal('Jane'), literal('jane@example.com'));
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO users (name, email) VALUES ('John', 'john@example.com'), ('Jane', 'jane@example.com')"
-        );
-    }
-
-    public function test_insert_with_on_conflict_do_nothing() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('name', 'email')
-            ->values(literal('John'), literal('john@example.com'))
-            ->onConflictDoNothing();
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO users (name, email) VALUES ('John', 'john@example.com') ON CONFLICT DO NOTHING"
-        );
-    }
-
-    public function test_insert_with_on_conflict_do_update() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('email', 'name')
-            ->values(literal('john@example.com'), literal('John'))
-            ->onConflictDoUpdate(
-                conflict_columns(['email']),
-                ['name' => literal('Updated John')]
-            );
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO users (email, name) VALUES ('john@example.com', 'John') ON CONFLICT (email) DO UPDATE SET name = 'Updated John'"
-        );
-    }
-
-    public function test_insert_with_on_conflict_on_columns_do_nothing() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('name', 'email')
-            ->values(literal('John'), literal('john@example.com'))
-            ->onConflictDoNothing(conflict_columns(['email']));
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO users (name, email) VALUES ('John', 'john@example.com') ON CONFLICT (email) DO NOTHING"
-        );
-    }
-
-    public function test_insert_with_parameters() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('name', 'email')
-            ->values(param(1), param(2));
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            'INSERT INTO users (name, email) VALUES ($1, $2)'
-        );
-    }
-
-    public function test_insert_with_returning() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('name')
-            ->values(literal('John'))
-            ->returning(col('id'));
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO users (name) VALUES ('John') RETURNING id"
-        );
-    }
-
-    public function test_insert_with_returning_all() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('name')
-            ->values(literal('John'))
-            ->returningAll();
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO users (name) VALUES ('John') RETURNING *"
-        );
-    }
-
-    public function test_insert_with_schema_qualified_table() : void
-    {
-        $query = insert()
-            ->into('public.users')
-            ->columns('name')
-            ->values(literal('John'));
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO public.users (name) VALUES ('John')"
-        );
-    }
-
-    public function test_simple_insert_with_values() : void
-    {
-        $query = insert()
-            ->into('users')
-            ->columns('name', 'email')
-            ->values(literal('John'), literal('john@example.com'));
-
-        $this->assertInsertQueryRoundTrip(
-            $query,
-            "INSERT INTO users (name, email) VALUES ('John', 'john@example.com')"
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/MergeBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/MergeBuilderTest.php
deleted file mode 100644
index 446dc01c24..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/MergeBuilderTest.php
+++ /dev/null
@@ -1,234 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{
-    col,
-    cte,
-    eq,
-    gt,
-    literal,
-    merge,
-    param,
-    select,
-    table,
-    with
-};
-
-use Flow\PostgreSql\{ParsedQuery, Parser};
-use Flow\PostgreSql\Protobuf\AST\{MergeStmt, Node, RawStmt};
-use Flow\PostgreSql\QueryBuilder\Merge\MergeFinalStep;
-
-final class MergeBuilderTest extends PGQueryTestCase
-{
-    public function test_merge_simple_update() : void
-    {
-        $query = merge('target')
-            ->using('source', 's')
-            ->on(eq(col('target.id'), col('s.id')))
-            ->whenMatched()
-            ->thenUpdate([
-                'value' => col('s.value'),
-            ]);
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'MERGE INTO target USING source s ON target.id = s.id WHEN MATCHED THEN UPDATE SET value = s.value'
-        );
-    }
-
-    public function test_merge_using_subquery() : void
-    {
-        $sourceQuery = select()
-            ->select(col('id'), col('name'), col('email'))
-            ->from(table('staged_data'));
-
-        $query = merge('users')
-            ->using($sourceQuery, 'src')
-            ->on(eq(col('users.id'), col('src.id')))
-            ->whenMatched()
-            ->thenUpdate([
-                'name' => col('src.name'),
-                'email' => col('src.email'),
-            ]);
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'MERGE INTO users USING (SELECT id, name, email FROM staged_data) src ON users.id = src.id WHEN MATCHED THEN UPDATE SET name = src.name, email = src.email'
-        );
-    }
-
-    public function test_merge_when_not_matched_do_nothing() : void
-    {
-        $query = merge('target')
-            ->using('source', 's')
-            ->on(eq(col('target.id'), col('s.id')))
-            ->whenNotMatched()
-            ->thenDoNothing();
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'MERGE INTO target USING source s ON target.id = s.id WHEN NOT MATCHED THEN DO NOTHING'
-        );
-    }
-
-    public function test_merge_with_conditional_when_matched() : void
-    {
-        $query = merge('products', 'p')
-            ->using('price_updates', 'pu')
-            ->on(eq(col('p.id'), col('pu.product_id')))
-            ->whenMatchedAnd(gt(col('pu.price'), literal(0)))
-            ->thenUpdate([
-                'price' => col('pu.price'),
-            ]);
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'MERGE INTO products p USING price_updates pu ON p.id = pu.product_id WHEN MATCHED AND pu.price > 0 THEN UPDATE SET price = pu.price'
-        );
-    }
-
-    public function test_merge_with_cte() : void
-    {
-        $stagedData = select()
-            ->select(col('id'), col('name'))
-            ->from(table('raw_input'));
-
-        $query = with(cte('staged_data', $stagedData))->merge('users')
-            ->using('staged_data', 's')
-            ->on(eq(col('users.id'), col('s.id')))
-            ->whenMatched()
-            ->thenUpdate([
-                'name' => col('s.name'),
-            ]);
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'WITH staged_data AS (SELECT id, name FROM raw_input) MERGE INTO users USING staged_data s ON users.id = s.id WHEN MATCHED THEN UPDATE SET name = s.name'
-        );
-    }
-
-    public function test_merge_with_delete() : void
-    {
-        $query = merge('target_table', 't')
-            ->using('source_table', 's')
-            ->on(eq(col('t.id'), col('s.id')))
-            ->whenMatched()
-            ->thenDelete();
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'MERGE INTO target_table t USING source_table s ON t.id = s.id WHEN MATCHED THEN DELETE'
-        );
-    }
-
-    public function test_merge_with_do_nothing() : void
-    {
-        $query = merge('products')
-            ->using('updates', 'u')
-            ->on(eq(col('products.id'), col('u.id')))
-            ->whenMatched()
-            ->thenDoNothing();
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'MERGE INTO products USING updates u ON products.id = u.id WHEN MATCHED THEN DO NOTHING'
-        );
-    }
-
-    public function test_merge_with_insert() : void
-    {
-        $query = merge('customers')
-            ->using('new_customers', 'nc')
-            ->on(eq(col('customers.id'), col('nc.id')))
-            ->whenNotMatched()
-            ->thenInsert(
-                ['id', 'name', 'email'],
-                [col('nc.id'), col('nc.name'), col('nc.email')]
-            );
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'MERGE INTO customers USING new_customers nc ON customers.id = nc.id WHEN NOT MATCHED THEN INSERT (id, name, email) VALUES (nc.id, nc.name, nc.email)'
-        );
-    }
-
-    public function test_merge_with_insert_values() : void
-    {
-        $query = merge('users')
-            ->using('new_users', 'n')
-            ->on(eq(col('users.id'), col('n.id')))
-            ->whenNotMatched()
-            ->thenInsertValues([
-                'id' => col('n.id'),
-                'name' => col('n.name'),
-                'status' => literal('active'),
-            ]);
-
-        $this->assertMergeQueryEquals(
-            $query,
-            "MERGE INTO users USING new_users n ON users.id = n.id WHEN NOT MATCHED THEN INSERT (id, name, status) VALUES (n.id, n.name, 'active')"
-        );
-    }
-
-    public function test_merge_with_multiple_when_clauses() : void
-    {
-        $query = merge('inventory', 'i')
-            ->using('updates', 'u')
-            ->on(eq(col('i.product_id'), col('u.product_id')))
-            ->whenMatched()
-            ->thenUpdate([
-                'quantity' => col('u.quantity'),
-                'updated_at' => col('u.updated_at'),
-            ])
-            ->whenNotMatched()
-            ->thenInsert(
-                ['product_id', 'quantity'],
-                [col('u.product_id'), col('u.quantity')]
-            );
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'MERGE INTO inventory i USING updates u ON i.product_id = u.product_id WHEN MATCHED THEN UPDATE SET quantity = u.quantity, updated_at = u.updated_at WHEN NOT MATCHED THEN INSERT (product_id, quantity) VALUES (u.product_id, u.quantity)'
-        );
-    }
-
-    public function test_merge_with_parameters() : void
-    {
-        $query = merge('accounts')
-            ->using('transactions', 't')
-            ->on(eq(col('accounts.id'), col('t.account_id')))
-            ->whenMatched()
-            ->thenUpdate([
-                'balance' => param(1),
-            ]);
-
-        $this->assertMergeQueryEquals(
-            $query,
-            'MERGE INTO accounts USING transactions t ON accounts.id = t.account_id WHEN MATCHED THEN UPDATE SET balance = $1'
-        );
-    }
-
-    protected function assertMergeQueryEquals(MergeFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseMergeStmt($builder->toAst());
-
-        self::assertSame($expectedSql, $sql);
-    }
-
-    protected function deparseMergeStmt(MergeStmt $mergeStmt) : string
-    {
-        $node = new Node();
-        $node->setMergeStmt($mergeStmt);
-
-        $parser = new Parser();
-        $rawStmt = new RawStmt(['stmt' => $node]);
-        $parsed = $parser->parse('SELECT 1');
-        $parseResult = $parsed->raw();
-        $parseResult->setStmts([$rawStmt]);
-
-        return (new ParsedQuery($parseResult))->deparse();
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/PGQueryTestCase.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/PGQueryTestCase.php
deleted file mode 100644
index f7c7d72bab..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/PGQueryTestCase.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use Flow\PostgreSql\Tests\Integration\QueryBuilder\Assertions\QueryBuilderAssertions;
-use PHPUnit\Framework\TestCase;
-
-abstract class PGQueryTestCase extends TestCase
-{
-    use QueryBuilderAssertions;
-
-    protected function setUp() : void
-    {
-        if (!\function_exists('pg_query_deparse')) {
-            static::markTestSkipped('pg_query_deparse function not available. Rebuild the pg_query extension.');
-        }
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/RoleBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/RoleBuilderTest.php
deleted file mode 100644
index 14d030f7f8..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/RoleBuilderTest.php
+++ /dev/null
@@ -1,294 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{alter, create, drop, grant, grant_role, reassign_owned, reset_role, revoke, revoke_role, set_role};
-
-use Flow\PostgreSql\QueryBuilder\Schema\Grant\TablePrivilege;
-
-final class RoleBuilderTest extends PGQueryTestCase
-{
-    public function test_alter_role_rename() : void
-    {
-        $builder = alter()->role('old_name')
-            ->renameTo('new_name');
-
-        $this->assertAlterRoleRenameQuery(
-            $builder,
-            'ALTER ROLE old_name RENAME TO new_name'
-        );
-    }
-
-    public function test_alter_role_set_options() : void
-    {
-        $builder = alter()->role('admin')
-            ->superuser();
-
-        $this->assertAlterRoleQuery(
-            $builder,
-            'ALTER ROLE admin WITH SUPERUSER'
-        );
-    }
-
-    public function test_alter_role_with_multiple_options() : void
-    {
-        $builder = alter()->role('admin')
-            ->noSuperuser()
-            ->createDb();
-
-        $this->assertAlterRoleQuery(
-            $builder,
-            'ALTER ROLE admin WITH NOSUPERUSER CREATEDB'
-        );
-    }
-
-    public function test_create_role_simple() : void
-    {
-        $builder = create()->role('admin');
-
-        $this->assertCreateRoleQuery(
-            $builder,
-            'CREATE ROLE admin'
-        );
-    }
-
-    public function test_create_role_with_login() : void
-    {
-        $builder = create()->role('app_user')
-            ->login();
-
-        $this->assertCreateRoleQuery(
-            $builder,
-            'CREATE ROLE app_user WITH LOGIN'
-        );
-    }
-
-    public function test_create_role_with_options() : void
-    {
-        $builder = create()->role('admin')
-            ->superuser()
-            ->login();
-
-        $this->assertCreateRoleQuery(
-            $builder,
-            'CREATE ROLE admin WITH SUPERUSER LOGIN'
-        );
-    }
-
-    public function test_create_user_with_password() : void
-    {
-        $builder = create()->role('app_user')
-            ->login()
-            ->withPassword('secret');
-
-        $this->assertCreateRoleQuery(
-            $builder,
-            "CREATE ROLE app_user WITH LOGIN PASSWORD 'secret'"
-        );
-    }
-
-    public function test_drop_owned_by() : void
-    {
-        $builder = drop()->owned('role1');
-
-        $this->assertDropOwnedQuery(
-            $builder,
-            'DROP OWNED BY role1'
-        );
-    }
-
-    public function test_drop_owned_by_cascade() : void
-    {
-        $builder = drop()->owned('role1')
-            ->cascade();
-
-        $this->assertDropOwnedQuery(
-            $builder,
-            'DROP OWNED BY role1 CASCADE'
-        );
-    }
-
-    public function test_drop_role_if_exists() : void
-    {
-        $builder = drop()->role('admin')
-            ->ifExists();
-
-        $this->assertDropRoleQuery(
-            $builder,
-            'DROP ROLE IF EXISTS admin'
-        );
-    }
-
-    public function test_drop_role_multiple() : void
-    {
-        $builder = drop()->role('role1', 'role2');
-
-        $this->assertDropRoleQuery(
-            $builder,
-            'DROP ROLE role1, role2'
-        );
-    }
-
-    public function test_drop_role_simple() : void
-    {
-        $builder = drop()->role('admin');
-
-        $this->assertDropRoleQuery(
-            $builder,
-            'DROP ROLE admin'
-        );
-    }
-
-    public function test_grant_all_on_table() : void
-    {
-        $builder = grant(TablePrivilege::ALL)
-            ->onTable('users')
-            ->to('admin');
-
-        $this->assertGrantQuery(
-            $builder,
-            'GRANT ALL ON users TO admin'
-        );
-    }
-
-    public function test_grant_on_all_tables_in_schema() : void
-    {
-        $builder = grant(TablePrivilege::SELECT)
-            ->onAllTablesInSchema('public')
-            ->to('admin');
-
-        $this->assertGrantQuery(
-            $builder,
-            'GRANT select ON ALL TABLES IN SCHEMA public TO admin'
-        );
-    }
-
-    public function test_grant_role_to_role() : void
-    {
-        $builder = grant_role('admin')
-            ->to('user1');
-
-        $this->assertGrantRoleQuery(
-            $builder,
-            'GRANT admin TO user1'
-        );
-    }
-
-    public function test_grant_role_with_admin_option() : void
-    {
-        $builder = grant_role('admin')
-            ->to('user1')
-            ->withAdminOption();
-
-        $this->assertGrantRoleQuery(
-            $builder,
-            'GRANT admin TO user1 WITH ADMIN OPTION'
-        );
-    }
-
-    public function test_grant_select_on_table() : void
-    {
-        $builder = grant(TablePrivilege::SELECT)
-            ->onTable('users')
-            ->to('app_user');
-
-        $this->assertGrantQuery(
-            $builder,
-            'GRANT select ON users TO app_user'
-        );
-    }
-
-    public function test_grant_with_grant_option() : void
-    {
-        $builder = grant(TablePrivilege::SELECT)
-            ->onTable('users')
-            ->to('app_user')
-            ->withGrantOption();
-
-        $this->assertGrantQuery(
-            $builder,
-            'GRANT select ON users TO app_user WITH GRANT OPTION'
-        );
-    }
-
-    public function test_reassign_owned_by() : void
-    {
-        $builder = reassign_owned('old_role')
-            ->to('new_role');
-
-        $this->assertReassignOwnedQuery(
-            $builder,
-            'REASSIGN OWNED BY old_role TO new_role'
-        );
-    }
-
-    public function test_reset_role() : void
-    {
-        $builder = reset_role();
-
-        $this->assertResetRoleQuery(
-            $builder,
-            'RESET role'
-        );
-    }
-
-    public function test_revoke_role_cascade() : void
-    {
-        $builder = revoke_role('admin')
-            ->from('user1')
-            ->cascade();
-
-        $this->assertRevokeRoleQuery(
-            $builder,
-            'REVOKE admin FROM user1 CASCADE'
-        );
-    }
-
-    public function test_revoke_role_from_role() : void
-    {
-        $builder = revoke_role('admin')
-            ->from('user1');
-
-        $this->assertRevokeRoleQuery(
-            $builder,
-            'REVOKE admin FROM user1'
-        );
-    }
-
-    public function test_revoke_select_on_table() : void
-    {
-        $builder = revoke(TablePrivilege::SELECT)
-            ->onTable('users')
-            ->from('app_user');
-
-        $this->assertRevokeQuery(
-            $builder,
-            'REVOKE select ON users FROM app_user'
-        );
-    }
-
-    public function test_revoke_with_cascade() : void
-    {
-        $builder = revoke(TablePrivilege::SELECT)
-            ->onTable('users')
-            ->from('app_user')
-            ->cascade();
-
-        $this->assertRevokeQuery(
-            $builder,
-            'REVOKE select ON users FROM app_user CASCADE'
-        );
-    }
-
-    public function test_set_role() : void
-    {
-        $builder = set_role('admin');
-
-        $this->assertSetRoleQuery(
-            $builder,
-            'SET role TO admin'
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/SchemaBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/SchemaBuilderTest.php
deleted file mode 100644
index 974ec2e416..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/SchemaBuilderTest.php
+++ /dev/null
@@ -1,141 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{alter, create, drop};
-
-final class SchemaBuilderTest extends PGQueryTestCase
-{
-    public function test_alter_schema_owner() : void
-    {
-        $builder = alter()->schema('my_schema')
-            ->ownerTo('new_owner');
-
-        $this->assertAlterSchemaOwnerQuery(
-            $builder,
-            'ALTER SCHEMA my_schema OWNER TO new_owner'
-        );
-    }
-
-    public function test_alter_schema_rename() : void
-    {
-        $builder = alter()->schema('old_schema')
-            ->renameTo('new_schema');
-
-        $this->assertAlterSchemaRenameQuery(
-            $builder,
-            'ALTER SCHEMA old_schema RENAME TO new_schema'
-        );
-    }
-
-    public function test_create_schema_if_not_exists() : void
-    {
-        $builder = create()->schema('my_schema')
-            ->ifNotExists();
-
-        $this->assertCreateSchemaQuery(
-            $builder,
-            'CREATE SCHEMA IF NOT EXISTS my_schema'
-        );
-    }
-
-    public function test_create_schema_if_not_exists_with_authorization() : void
-    {
-        $builder = create()->schema('my_schema')
-            ->ifNotExists()
-            ->authorization('admin_user');
-
-        $this->assertCreateSchemaQuery(
-            $builder,
-            'CREATE SCHEMA IF NOT EXISTS my_schema AUTHORIZATION admin_user'
-        );
-    }
-
-    public function test_create_schema_simple() : void
-    {
-        $builder = create()->schema('my_schema');
-
-        $this->assertCreateSchemaQuery(
-            $builder,
-            'CREATE SCHEMA my_schema'
-        );
-    }
-
-    public function test_create_schema_with_authorization() : void
-    {
-        $builder = create()->schema('my_schema')
-            ->authorization('admin_user');
-
-        $this->assertCreateSchemaQuery(
-            $builder,
-            'CREATE SCHEMA my_schema AUTHORIZATION admin_user'
-        );
-    }
-
-    public function test_drop_schema_cascade() : void
-    {
-        $builder = drop()->schema('my_schema')
-            ->cascade();
-
-        $this->assertDropSchemaQuery(
-            $builder,
-            'DROP SCHEMA my_schema CASCADE'
-        );
-    }
-
-    public function test_drop_schema_if_exists() : void
-    {
-        $builder = drop()->schema('my_schema')
-            ->ifExists();
-
-        $this->assertDropSchemaQuery(
-            $builder,
-            'DROP SCHEMA IF EXISTS my_schema'
-        );
-    }
-
-    public function test_drop_schema_if_exists_cascade() : void
-    {
-        $builder = drop()->schema('my_schema')
-            ->ifExists()
-            ->cascade();
-
-        $this->assertDropSchemaQuery(
-            $builder,
-            'DROP SCHEMA IF EXISTS my_schema CASCADE'
-        );
-    }
-
-    public function test_drop_schema_multiple() : void
-    {
-        $builder = drop()->schema('schema1', 'schema2');
-
-        $this->assertDropSchemaQuery(
-            $builder,
-            'DROP SCHEMA schema1, schema2'
-        );
-    }
-
-    public function test_drop_schema_restrict() : void
-    {
-        $builder = drop()->schema('my_schema')
-            ->restrict();
-
-        $this->assertDropSchemaQuery(
-            $builder,
-            'DROP SCHEMA my_schema'
-        );
-    }
-
-    public function test_drop_schema_simple() : void
-    {
-        $builder = drop()->schema('my_schema');
-
-        $this->assertDropSchemaQuery(
-            $builder,
-            'DROP SCHEMA my_schema'
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/SelectBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/SelectBuilderTest.php
deleted file mode 100644
index e13c98620f..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/SelectBuilderTest.php
+++ /dev/null
@@ -1,1280 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{
-    agg_avg,
-    agg_count,
-    agg_max,
-    agg_min,
-    agg_sum,
-    all_sub_select,
-    any_sub_select,
-    array_expr,
-    asc,
-    between,
-    binary_expr,
-    case_when,
-    cast,
-    coalesce,
-    col,
-    cond_and,
-    cond_not,
-    cond_or,
-    cte,
-    current_date,
-    current_time,
-    current_timestamp,
-    data_type_integer,
-    data_type_text,
-    derived,
-    desc,
-    eq,
-    exists,
-    func,
-    greatest,
-    gt,
-    gte,
-    is_distinct_from,
-    is_in,
-    is_null,
-    lateral,
-    least,
-    like,
-    literal,
-    lt,
-    lte,
-    neq,
-    nullif,
-    order_by,
-    param,
-    raw_cond,
-    raw_expr,
-    row_expr,
-    select,
-    similar_to,
-    star,
-    sub_select,
-    table,
-    table_func,
-    when,
-    window_def,
-    window_func,
-    with
-};
-use Flow\PostgreSql\QueryBuilder\Clause\{CTEMaterialization, NullsPosition, SortDirection};
-
-use Flow\PostgreSql\QueryBuilder\Condition\ComparisonOperator;
-
-final class SelectBuilderTest extends PGQueryTestCase
-{
-    public function test_select_distinct_on() : void
-    {
-        $query = select()
-            ->selectDistinctOn(
-                [col('department')],
-                col('name'),
-                col('salary')
-            )
-            ->from(table('employees'))
-            ->orderBy(asc(col('department')), desc(col('salary')));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT DISTINCT ON (department) name, salary FROM employees ORDER BY department ASC, salary DESC'
-        );
-    }
-
-    public function test_select_except_all() : void
-    {
-        $query1 = select()
-            ->select(col('id'))
-            ->from(table('all_users'));
-
-        $query2 = select()
-            ->select(col('id'))
-            ->from(table('banned_users'));
-
-        $query = $query1->exceptAll($query2);
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id FROM all_users EXCEPT ALL SELECT id FROM banned_users'
-        );
-    }
-
-    public function test_select_intersect_all() : void
-    {
-        $query1 = select()
-            ->select(col('id'))
-            ->from(table('users'));
-
-        $query2 = select()
-            ->select(col('id'))
-            ->from(table('admins'));
-
-        $query = $query1->intersectAll($query2);
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id FROM users INTERSECT ALL SELECT id FROM admins'
-        );
-    }
-
-    public function test_select_with_aggregates() : void
-    {
-        $query = select()
-            ->select(
-                col('category'),
-                agg_count(),
-                agg_sum(col('amount')),
-                agg_avg(col('price')),
-                agg_min(col('created_at')),
-                agg_max(col('updated_at'))
-            )
-            ->from(table('orders'))
-            ->groupBy(col('category'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT category, count(*), sum(amount), avg(price), min(created_at), max(updated_at) FROM orders GROUP BY category'
-        );
-    }
-
-    public function test_select_with_aliased_columns() : void
-    {
-        $query = select()
-            ->select(
-                col('first_name')->as('fname'),
-                col('last_name')->as('lname')
-            )
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT first_name AS fname, last_name AS lname FROM users'
-        );
-    }
-
-    public function test_select_with_all() : void
-    {
-        $subquery = select()
-            ->select(col('price'))
-            ->from(table('budget_products'));
-
-        $query = select()
-            ->select(star())
-            ->from(table('products'))
-            ->where(all_sub_select(col('price'), ComparisonOperator::GT, $subquery));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM products WHERE price > ALL (SELECT price FROM budget_products)'
-        );
-    }
-
-    public function test_select_with_any() : void
-    {
-        $subquery = select()
-            ->select(col('price'))
-            ->from(table('discounted_products'));
-
-        $query = select()
-            ->select(star())
-            ->from(table('products'))
-            ->where(any_sub_select(col('price'), ComparisonOperator::GT, $subquery));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM products WHERE price > ANY (SELECT price FROM discounted_products)'
-        );
-    }
-
-    public function test_select_with_array_constructor() : void
-    {
-        $query = select()
-            ->select(array_expr([literal(1), literal(2), literal(3)])->as('numbers'))
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT ARRAY[1, 2, 3] AS numbers FROM users'
-        );
-    }
-
-    public function test_select_with_array_expression() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(is_in(col('id'), [literal(1), literal(2), literal(3)]));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM users WHERE id IN (1, 2, 3)'
-        );
-    }
-
-    public function test_select_with_between_condition() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('products'))
-            ->where(between(col('price'), literal(10), literal(100)));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM products WHERE price BETWEEN 10 AND 100'
-        );
-    }
-
-    public function test_select_with_case_expression() : void
-    {
-        $query = select()
-            ->select(
-                col('name'),
-                case_when([
-                    when(binary_expr(col('price'), '>', literal(100)), literal('expensive')),
-                    when(binary_expr(col('price'), '>', literal(50)), literal('moderate')),
-                ], literal('cheap'))->as('price_category')
-            )
-            ->from(table('products'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT name, CASE WHEN price > 100 THEN 'expensive' WHEN price > 50 THEN 'moderate' ELSE 'cheap' END AS price_category FROM products"
-        );
-    }
-
-    public function test_select_with_coalesce() : void
-    {
-        $query = select()
-            ->select(
-                col('id'),
-                coalesce(
-                    col('nickname'),
-                    col('name'),
-                    literal('Anonymous')
-                )->as('display_name')
-            )
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT id, COALESCE(nickname, name, 'Anonymous') AS display_name FROM users"
-        );
-    }
-
-    public function test_select_with_complex_and_or_conditions() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(
-                cond_and(
-                    eq(col('status'), literal('active')),
-                    cond_or(
-                        gte(col('age'), literal(18)),
-                        eq(col('guardian_approved'), literal(true))
-                    )
-                )
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE status = 'active' AND (age >= 18 OR guardian_approved = true)"
-        );
-    }
-
-    public function test_select_with_cross_join() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('colors'))
-            ->crossJoin(table('sizes'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM colors CROSS JOIN sizes'
-        );
-    }
-
-    public function test_select_with_cte() : void
-    {
-        $query = with(
-            cte(
-                'active_users',
-                select()
-                    ->select(col('id'), col('name'))
-                    ->from(table('users'))
-                    ->where(eq(col('active'), literal(true)))
-            )
-        )
-            ->select(star())
-            ->from(table('active_users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'WITH active_users AS (SELECT id, name FROM users WHERE active = true) SELECT * FROM active_users'
-        );
-    }
-
-    public function test_select_with_cte_materialized() : void
-    {
-        $cteQuery = select()
-            ->select(col('id'), col('name'))
-            ->from(table('users'))
-            ->where(eq(col('active'), literal(true)));
-
-        $query = with(cte('active_users', $cteQuery, [], CTEMaterialization::MATERIALIZED))
-            ->select(star())
-            ->from(table('active_users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'WITH active_users AS MATERIALIZED (SELECT id, name FROM users WHERE active = true) SELECT * FROM active_users'
-        );
-    }
-
-    public function test_select_with_cte_not_materialized() : void
-    {
-        $cteQuery = select()
-            ->select(col('id'), col('name'))
-            ->from(table('users'))
-            ->where(eq(col('active'), literal(true)));
-
-        $query = with(cte('active_users', $cteQuery, [], CTEMaterialization::NOT_MATERIALIZED))
-            ->select(star())
-            ->from(table('active_users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'WITH active_users AS NOT MATERIALIZED (SELECT id, name FROM users WHERE active = true) SELECT * FROM active_users'
-        );
-    }
-
-    public function test_select_with_derived_table() : void
-    {
-        $subquery = select()
-            ->select(col('user_id'), agg_sum(col('amount'))->as('total'))
-            ->from(table('orders'))
-            ->groupBy(col('user_id'));
-
-        $query = select()
-            ->select(col('u.name'), col('o.total'))
-            ->from(table('users')->as('u'))
-            ->leftJoin(
-                derived($subquery, 'o'),
-                eq(col('u.id'), col('o.user_id'))
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT u.name, o.total FROM users u LEFT JOIN (SELECT user_id, sum(amount) AS total FROM orders GROUP BY user_id) o ON u.id = o.user_id'
-        );
-    }
-
-    public function test_select_with_derived_table_join() : void
-    {
-        $subquery = select()
-            ->select(col('user_id'), agg_count()->as('order_count'))
-            ->from(table('orders'))
-            ->groupBy(col('user_id'));
-
-        $query = select()
-            ->select(col('users.name'), col('order_stats.order_count'))
-            ->from(table('users'))
-            ->join(
-                derived($subquery, 'order_stats'),
-                eq(col('users.id'), col('order_stats.user_id'))
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT users.name, order_stats.order_count FROM users JOIN (SELECT user_id, count(*) AS order_count FROM orders GROUP BY user_id) order_stats ON users.id = order_stats.user_id'
-        );
-    }
-
-    public function test_select_with_distinct() : void
-    {
-        $query = select()
-            ->selectDistinct(col('city'))
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT DISTINCT city FROM users'
-        );
-    }
-
-    public function test_select_with_distinct_count() : void
-    {
-        $query = select()
-            ->select(agg_count(col('user_id'), true)->as('unique_users'))
-            ->from(table('orders'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT count(DISTINCT user_id) AS unique_users FROM orders'
-        );
-    }
-
-    public function test_select_with_except() : void
-    {
-        $query1 = select()
-            ->select(col('id'))
-            ->from(table('all_users'));
-
-        $query2 = select()
-            ->select(col('id'))
-            ->from(table('banned_users'));
-
-        $query = $query1->except($query2);
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id FROM all_users EXCEPT SELECT id FROM banned_users'
-        );
-    }
-
-    public function test_select_with_exists() : void
-    {
-        $subquery = select()
-            ->select(literal(1))
-            ->from(table('orders'))
-            ->where(eq(col('orders.user_id'), col('users.id')));
-
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(exists($subquery));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM users WHERE EXISTS (SELECT 1 FROM orders WHERE orders.user_id = users.id)'
-        );
-    }
-
-    public function test_select_with_for_key_share() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('accounts'))
-            ->where(eq(col('id'), literal(1)))
-            ->forKeyShare();
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM accounts WHERE id = 1 FOR KEY SHARE'
-        );
-    }
-
-    public function test_select_with_for_no_key_update() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('accounts'))
-            ->where(eq(col('id'), literal(1)))
-            ->forNoKeyUpdate();
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM accounts WHERE id = 1 FOR NO KEY UPDATE'
-        );
-    }
-
-    public function test_select_with_for_share() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('accounts'))
-            ->where(eq(col('id'), literal(1)))
-            ->forShare();
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM accounts WHERE id = 1 FOR SHARE'
-        );
-    }
-
-    public function test_select_with_for_update() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('accounts'))
-            ->where(eq(col('id'), literal(1)))
-            ->forUpdate();
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM accounts WHERE id = 1 FOR UPDATE'
-        );
-    }
-
-    public function test_select_with_full_join() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('table_a')->as('a'))
-            ->fullJoin(
-                table('table_b')->as('b'),
-                eq(col('a.key'), col('b.key'))
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM table_a a FULL JOIN table_b b ON a.key = b.key'
-        );
-    }
-
-    public function test_select_with_function_call() : void
-    {
-        $query = select()
-            ->select(
-                col('name'),
-                func('upper', [col('name')])->as('upper_name'),
-                func('length', [col('name')])->as('name_length')
-            )
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT name, upper(name) AS upper_name, length(name) AS name_length FROM users'
-        );
-    }
-
-    public function test_select_with_greatest() : void
-    {
-        $query = select()
-            ->select(
-                col('id'),
-                greatest(col('a'), col('b'), col('c'))->as('max_value')
-            )
-            ->from(table('numbers'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id, GREATEST(a, b, c) AS max_value FROM numbers'
-        );
-    }
-
-    public function test_select_with_group_by_having() : void
-    {
-        $query = select()
-            ->select(col('category'), agg_count()->as('cnt'))
-            ->from(table('products'))
-            ->groupBy(col('category'))
-            ->having(gt(agg_count(), literal(5)));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT category, count(*) AS cnt FROM products GROUP BY category HAVING count(*) > 5'
-        );
-    }
-
-    public function test_select_with_in_condition() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(is_in(
-                col('status'),
-                [literal('active'), literal('pending'), literal('verified')]
-            ));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE status IN ('active', 'pending', 'verified')"
-        );
-    }
-
-    public function test_select_with_inner_join() : void
-    {
-        $query = select()
-            ->select(col('u.name'), col('o.total'))
-            ->from(table('users')->as('u'))
-            ->join(
-                table('orders')->as('o'),
-                eq(col('u.id'), col('o.user_id'))
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT u.name, o.total FROM users u JOIN orders o ON u.id = o.user_id'
-        );
-    }
-
-    public function test_select_with_intersect() : void
-    {
-        $query1 = select()
-            ->select(col('id'))
-            ->from(table('premium_users'));
-
-        $query2 = select()
-            ->select(col('id'))
-            ->from(table('active_users'));
-
-        $query = $query1->intersect($query2);
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id FROM premium_users INTERSECT SELECT id FROM active_users'
-        );
-    }
-
-    public function test_select_with_is_distinct_from() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(is_distinct_from(col('status'), literal(null)));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM users WHERE status IS DISTINCT FROM NULL'
-        );
-    }
-
-    public function test_select_with_is_not_distinct_from() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(is_distinct_from(col('status'), literal('active'), true));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE status IS NOT DISTINCT FROM 'active'"
-        );
-    }
-
-    public function test_select_with_is_null_condition() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(is_null(col('deleted_at')));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM users WHERE deleted_at IS NULL'
-        );
-    }
-
-    public function test_select_with_lateral_join() : void
-    {
-        $lateralQuery = select()
-            ->select(star())
-            ->from(table('orders'))
-            ->where(eq(col('orders.user_id'), col('u.id')))
-            ->orderBy(desc(col('created_at')))
-            ->limit(3);
-
-        $query = select()
-            ->select(col('u.name'), col('recent.id'))
-            ->from(table('users')->as('u'))
-            ->leftJoin(
-                lateral(derived($lateralQuery, 'recent')),
-                raw_cond('true')
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT u.name, recent.id FROM users u LEFT JOIN LATERAL (SELECT * FROM orders WHERE orders.user_id = u.id ORDER BY created_at DESC LIMIT 3) recent ON true'
-        );
-    }
-
-    public function test_select_with_lateral_subquery() : void
-    {
-        $subquery = select()
-            ->select(col('order_id'))
-            ->from(table('orders'))
-            ->where(eq(col('orders.user_id'), col('users.id')))
-            ->orderBy(desc(col('created_at')))
-            ->limit(5);
-
-        $query = select()
-            ->select(col('users.name'), col('recent_orders.order_id'))
-            ->from(table('users'))
-            ->crossJoin(lateral(derived($subquery, 'recent_orders')));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT users.name, recent_orders.order_id FROM users CROSS JOIN LATERAL (SELECT order_id FROM orders WHERE orders.user_id = users.id ORDER BY created_at DESC LIMIT 5) recent_orders'
-        );
-    }
-
-    public function test_select_with_least() : void
-    {
-        $query = select()
-            ->select(
-                col('id'),
-                least(col('a'), col('b'), col('c'))->as('min_value')
-            )
-            ->from(table('numbers'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id, LEAST(a, b, c) AS min_value FROM numbers'
-        );
-    }
-
-    public function test_select_with_left_join() : void
-    {
-        $query = select()
-            ->select(col('u.name'), col('o.total'))
-            ->from(table('users')->as('u'))
-            ->leftJoin(
-                table('orders')->as('o'),
-                eq(col('u.id'), col('o.user_id'))
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT u.name, o.total FROM users u LEFT JOIN orders o ON u.id = o.user_id'
-        );
-    }
-
-    public function test_select_with_like_condition() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(like(col('email'), literal('%@example.com')));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE email LIKE '%@example.com'"
-        );
-    }
-
-    public function test_select_with_limit_offset() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->orderBy(asc(col('id')))
-            ->limit(10)
-            ->offset(20);
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM users ORDER BY id ASC LIMIT 10 OFFSET 20'
-        );
-    }
-
-    public function test_select_with_multiple_conditions() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(
-                cond_and(
-                    eq(col('active'), literal(true)),
-                    gte(col('age'), literal(18)),
-                    neq(col('status'), literal('banned'))
-                )
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE active = true AND age >= 18 AND status <> 'banned'"
-        );
-    }
-
-    public function test_select_with_not_condition() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(cond_not(eq(col('status'), literal('banned'))));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE NOT status = 'banned'"
-        );
-    }
-
-    public function test_select_with_nullif() : void
-    {
-        $query = select()
-            ->select(
-                col('id'),
-                nullif(col('value'), literal(0))->as('safe_value')
-            )
-            ->from(table('data'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id, NULLIF(value, 0) AS safe_value FROM data'
-        );
-    }
-
-    public function test_select_with_order_by_asc_desc() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->orderBy(
-                asc(col('last_name')),
-                desc(col('first_name'))
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM users ORDER BY last_name ASC, first_name DESC'
-        );
-    }
-
-    public function test_select_with_order_by_nulls_first_last() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('products'))
-            ->orderBy(
-                order_by(col('price'), SortDirection::ASC, NullsPosition::FIRST),
-                order_by(col('name'), SortDirection::DESC, NullsPosition::LAST)
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM products ORDER BY price ASC NULLS FIRST, name DESC NULLS LAST'
-        );
-    }
-
-    public function test_select_with_parameter() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(eq(col('id'), param(1)));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM users WHERE id = $1'
-        );
-    }
-
-    public function test_select_with_raw_expression() : void
-    {
-        $query = select()
-            ->select(
-                star(),
-                binary_expr(literal(1), '+', literal(1))->as('calculated')
-            )
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT *, 1 + 1 AS calculated FROM users'
-        );
-    }
-
-    public function test_select_with_raw_expression_in_select() : void
-    {
-        $query = select()
-            ->select(
-                col('id'),
-                raw_expr('1 + 1')->as('two')
-            )
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id, 1 + 1 AS two FROM users'
-        );
-    }
-
-    public function test_select_with_recursive_cte_window_functions_and_case_expression() : void
-    {
-        $orgTreeAnchor = select()
-            ->select(
-                col('id'),
-                col('name'),
-                col('manager_id'),
-                literal(0)->as('level'),
-                cast(col('name'), data_type_text())->as('path')
-            )
-            ->from(table('employees'))
-            ->where(is_null(col('manager_id')));
-
-        $orgTreeRecursive = select()
-            ->select(
-                col('e.id'),
-                col('e.name'),
-                col('e.manager_id'),
-                binary_expr(col('org_tree.level'), '+', literal(1)),
-                binary_expr(
-                    binary_expr(col('org_tree.path'), '||', literal(' -> ')),
-                    '||',
-                    col('e.name')
-                )
-            )
-            ->from(table('employees')->as('e'))
-            ->join(table('org_tree'), eq(col('e.manager_id'), col('org_tree.id')));
-
-        $orgTreeQuery = $orgTreeAnchor->unionAll($orgTreeRecursive);
-
-        $deptStats = select()
-            ->select(
-                col('department_id'),
-                agg_avg(col('salary')),
-                agg_max(col('salary')),
-                agg_count()
-            )
-            ->from(table('employees'))
-            ->groupBy(col('department_id'));
-
-        $rankedEmployees = select()
-            ->select(
-                col('e.id'),
-                col('e.name'),
-                col('e.department_id'),
-                col('e.salary'),
-                window_func(
-                    'row_number',
-                    [],
-                    [col('e.department_id')],
-                    [desc(col('e.salary'))]
-                ),
-                func('round', [
-                    binary_expr(
-                        binary_expr(col('e.salary'), '/', col('ds.max_salary')),
-                        '*',
-                        literal(100)
-                    ),
-                    literal(2),
-                ])
-            )
-            ->from(table('employees')->as('e'))
-            ->join(
-                table('dept_stats')->as('ds'),
-                eq(col('e.department_id'), col('ds.department_id'))
-            );
-
-        $query = with(
-            cte('org_tree', $orgTreeQuery, ['id', 'name', 'manager_id', 'level', 'path']),
-            cte('dept_stats', $deptStats, ['department_id', 'avg_salary', 'max_salary', 'employee_count']),
-            cte(
-                'ranked_employees',
-                $rankedEmployees,
-                ['id', 'name', 'department_id', 'salary', 'salary_rank', 'pct_of_max']
-            )
-        )
-            ->recursive()
-            ->select(
-                col('org_tree.name')->as('employee'),
-                col('org_tree.level'),
-                col('org_tree.path')->as('reporting_chain'),
-                col('d.name')->as('department'),
-                col('re.salary'),
-                col('re.salary_rank'),
-                col('re.pct_of_max'),
-                col('ds.avg_salary')->as('dept_avg'),
-                case_when([
-                    when(
-                        binary_expr(col('re.salary'), '>', col('ds.avg_salary')),
-                        literal('Above Average')
-                    ),
-                ], literal('At/Below Average'))->as('salary_status')
-            )
-            ->from(table('org_tree'))
-            ->join(table('ranked_employees')->as('re'), eq(col('org_tree.id'), col('re.id')))
-            ->join(
-                table('dept_stats')->as('ds'),
-                eq(col('re.department_id'), col('ds.department_id'))
-            )
-            ->join(table('departments')->as('d'), eq(col('re.department_id'), col('d.id')))
-            ->where(cond_and(
-                lte(col('org_tree.level'), literal(3)),
-                lte(col('re.salary_rank'), literal(5))
-            ))
-            ->orderBy(
-                asc(col('org_tree.level')),
-                asc(col('d.name')),
-                desc(col('re.salary'))
-            );
-
-        $expectedSql = <<<'SQL'
-            WITH RECURSIVE org_tree(id, name, manager_id, level, path) AS (SELECT id, name, manager_id, 0 AS level, name::pg_catalog.text AS path FROM employees WHERE manager_id IS NULL UNION ALL SELECT e.id, e.name, e.manager_id, org_tree.level + 1, (org_tree.path || ' -> ') || e.name FROM employees e JOIN org_tree ON e.manager_id = org_tree.id), dept_stats(department_id, avg_salary, max_salary, employee_count) AS (SELECT department_id, avg(salary), max(salary), count(*) FROM employees GROUP BY department_id), ranked_employees(id, name, department_id, salary, salary_rank, pct_of_max) AS (SELECT e.id, e.name, e.department_id, e.salary, row_number() OVER (PARTITION BY e.department_id ORDER BY e.salary DESC), round((e.salary / ds.max_salary) * 100, 2) FROM employees e JOIN dept_stats ds ON e.department_id = ds.department_id) SELECT org_tree.name AS employee, org_tree.level, org_tree.path AS reporting_chain, d.name AS department, re.salary, re.salary_rank, re.pct_of_max, ds.avg_salary AS dept_avg, CASE WHEN re.salary > ds.avg_salary THEN 'Above Average' ELSE 'At/Below Average' END AS salary_status FROM org_tree JOIN ranked_employees re ON org_tree.id = re.id JOIN dept_stats ds ON re.department_id = ds.department_id JOIN departments d ON re.department_id = d.id WHERE org_tree.level <= 3 AND re.salary_rank <= 5 ORDER BY org_tree.level ASC, d.name ASC, re.salary DESC
-            SQL;
-
-        $this->assertSelectQueryRoundTrip($query, $expectedSql);
-    }
-
-    public function test_select_with_right_join() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('orders')->as('o'))
-            ->rightJoin(
-                table('users')->as('u'),
-                eq(col('o.user_id'), col('u.id'))
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM orders o RIGHT JOIN users u ON o.user_id = u.id'
-        );
-    }
-
-    public function test_select_with_row_expression() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(
-                eq(
-                    row_expr([col('first_name'), col('last_name')]),
-                    row_expr([literal('John'), literal('Doe')])
-                )
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE (first_name, last_name) = ('John', 'Doe')"
-        );
-    }
-
-    public function test_select_with_scalar_subquery() : void
-    {
-        $subquery = select()
-            ->select(agg_count())
-            ->from(table('orders'))
-            ->where(eq(col('orders.user_id'), col('users.id')));
-
-        $query = select()
-            ->select(
-                col('name'),
-                sub_select($subquery)->as('order_count')
-            )
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT name, (SELECT count(*) FROM orders WHERE orders.user_id = users.id) AS order_count FROM users'
-        );
-    }
-
-    public function test_select_with_schema_qualified_table() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users', 'public'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM public.users'
-        );
-    }
-
-    public function test_select_with_similar_to() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(similar_to(col('name'), literal('%John%')));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE name SIMILAR TO '%John%'"
-        );
-    }
-
-    public function test_select_with_table_function() : void
-    {
-        $query = select()
-            ->select(col('value'))
-            ->from(table_func(func('generate_series', [literal(1), literal(10)]))->as('value'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT value FROM generate_series(1, 10) value'
-        );
-    }
-
-    public function test_select_with_type_cast() : void
-    {
-        $query = select()
-            ->select(
-                col('id'),
-                cast(col('price'), data_type_integer())->as('price_int')
-            )
-            ->from(table('products'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id, price::int AS price_int FROM products'
-        );
-    }
-
-    public function test_select_with_union() : void
-    {
-        $query1 = select()
-            ->select(col('name'))
-            ->from(table('users'));
-
-        $query2 = select()
-            ->select(col('name'))
-            ->from(table('admins'));
-
-        $query = $query1->union($query2);
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT name FROM users UNION SELECT name FROM admins'
-        );
-    }
-
-    public function test_select_with_union_all() : void
-    {
-        $query1 = select()
-            ->select(col('id'))
-            ->from(table('table1'));
-
-        $query2 = select()
-            ->select(col('id'))
-            ->from(table('table2'));
-
-        $query = $query1->unionAll($query2);
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id FROM table1 UNION ALL SELECT id FROM table2'
-        );
-    }
-
-    public function test_select_with_where_comparison_operators() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('products'))
-            ->where(
-                cond_and(
-                    gt(col('price'), literal(10)),
-                    lt(col('price'), literal(100)),
-                    gte(col('quantity'), literal(1)),
-                    lte(col('weight'), literal(50))
-                )
-            );
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM products WHERE price > 10 AND price < 100 AND quantity >= 1 AND weight <= 50'
-        );
-    }
-
-    public function test_select_with_window_definition() : void
-    {
-        $query = select()
-            ->select(
-                col('department'),
-                col('salary'),
-                window_func(
-                    'row_number',
-                    [],
-                    [],
-                    [order_by(col('salary'), SortDirection::DESC)]
-                )->as('rank')
-            )
-            ->from(table('employees'))
-            ->window(window_def(
-                'w',
-                [col('department')],
-                [order_by(col('salary'), SortDirection::DESC)]
-            ));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT department, salary, row_number() OVER (ORDER BY salary DESC) AS rank FROM employees WINDOW w AS (PARTITION BY department ORDER BY salary DESC)'
-        );
-    }
-
-    public function test_simple_select() : void
-    {
-        $query = select()
-            ->select(col('id'), col('name'))
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id, name FROM users'
-        );
-    }
-
-    public function test_simple_select_star() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM users'
-        );
-    }
-
-    public function test_simple_select_with_where() : void
-    {
-        $query = select()
-            ->select(star())
-            ->from(table('users'))
-            ->where(eq(col('active'), literal(true)));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM users WHERE active = true'
-        );
-    }
-
-    public function test_sql_value_function_current_date() : void
-    {
-        $query = select()
-            ->select(current_date()->as('today'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT current_date AS today'
-        );
-    }
-
-    public function test_sql_value_function_current_time() : void
-    {
-        $query = select()
-            ->select(current_time()->as('now_time'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT current_time AS now_time'
-        );
-    }
-
-    public function test_sql_value_function_current_timestamp() : void
-    {
-        $query = select()
-            ->select(current_timestamp()->as('now'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT current_timestamp AS now'
-        );
-    }
-
-    public function test_sql_value_functions_with_other_columns() : void
-    {
-        $query = select()
-            ->select(
-                col('id'),
-                col('name'),
-                current_timestamp()->as('created_at')
-            )
-            ->from(table('users'));
-
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT id, name, current_timestamp AS created_at FROM users'
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TypeBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TypeBuilderTest.php
deleted file mode 100644
index 9c94ef7450..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TypeBuilderTest.php
+++ /dev/null
@@ -1,240 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{alter, create, data_type_text, drop, type_attr};
-
-final class TypeBuilderTest extends PGQueryTestCase
-{
-    public function test_alter_enum_type_add_value() : void
-    {
-        $builder = alter()->enumType('status')
-            ->addValue('archived');
-
-        $this->assertAlterEnumTypeQuery(
-            $builder,
-            "ALTER TYPE status ADD VALUE 'archived'"
-        );
-    }
-
-    public function test_alter_enum_type_add_value_after() : void
-    {
-        $builder = alter()->enumType('status')
-            ->addValueAfter('archived', 'closed');
-
-        $this->assertAlterEnumTypeQuery(
-            $builder,
-            "ALTER TYPE status ADD VALUE 'archived' AFTER 'closed'"
-        );
-    }
-
-    public function test_alter_enum_type_add_value_before() : void
-    {
-        $builder = alter()->enumType('status')
-            ->addValueBefore('pending', 'active');
-
-        $this->assertAlterEnumTypeQuery(
-            $builder,
-            "ALTER TYPE status ADD VALUE 'pending' BEFORE 'active'"
-        );
-    }
-
-    public function test_alter_enum_type_add_value_if_not_exists() : void
-    {
-        $builder = alter()->enumType('status')
-            ->addValue('archived')
-            ->ifNotExists();
-
-        $this->assertAlterEnumTypeQuery(
-            $builder,
-            "ALTER TYPE status ADD VALUE IF NOT EXISTS 'archived'"
-        );
-    }
-
-    public function test_alter_enum_type_rename_value() : void
-    {
-        $builder = alter()->enumType('status')
-            ->renameValue('old_name', 'new_name');
-
-        $this->assertAlterEnumTypeQuery(
-            $builder,
-            "ALTER TYPE status RENAME VALUE 'old_name' TO 'new_name'"
-        );
-    }
-
-    public function test_create_composite_type_simple() : void
-    {
-        $builder = create()->compositeType('address')
-            ->attributes(
-                type_attr('street', data_type_text()),
-                type_attr('city', data_type_text()),
-                type_attr('zip', data_type_text())
-            );
-
-        $this->assertCreateCompositeTypeQuery(
-            $builder,
-            'CREATE TYPE address AS (street pg_catalog.text, city pg_catalog.text, zip pg_catalog.text)'
-        );
-    }
-
-    public function test_create_composite_type_with_collation() : void
-    {
-        $builder = create()->compositeType('person')
-            ->attributes(
-                type_attr('name', data_type_text())->collate('en_US')
-            );
-
-        $this->assertCreateCompositeTypeQuery(
-            $builder,
-            'CREATE TYPE person AS (name pg_catalog.text COLLATE "en_US")'
-        );
-    }
-
-    public function test_create_composite_type_with_schema() : void
-    {
-        $builder = create()->compositeType('public.address')
-            ->attributes(
-                type_attr('street', data_type_text())
-            );
-
-        $this->assertCreateCompositeTypeQuery(
-            $builder,
-            'CREATE TYPE public.address AS (street pg_catalog.text)'
-        );
-    }
-
-    public function test_create_enum_type_simple() : void
-    {
-        $builder = create()->enumType('status')
-            ->labels('pending', 'active', 'closed');
-
-        $this->assertCreateEnumTypeQuery(
-            $builder,
-            "CREATE TYPE status AS ENUM ('pending', 'active', 'closed')"
-        );
-    }
-
-    public function test_create_enum_type_with_schema() : void
-    {
-        $builder = create()->enumType('public.status')
-            ->labels('pending', 'active');
-
-        $this->assertCreateEnumTypeQuery(
-            $builder,
-            "CREATE TYPE public.status AS ENUM ('pending', 'active')"
-        );
-    }
-
-    public function test_create_range_type_simple() : void
-    {
-        $builder = create()->rangeType('floatrange')
-            ->subtype('float8');
-
-        $this->assertCreateRangeTypeQuery(
-            $builder,
-            'CREATE TYPE floatrange AS RANGE (subtype = float8)'
-        );
-    }
-
-    public function test_create_range_type_with_collation() : void
-    {
-        $builder = create()->rangeType('textrange')
-            ->subtype('text')
-            ->collation('en_US');
-
-        $this->assertCreateRangeTypeQuery(
-            $builder,
-            "CREATE TYPE textrange AS RANGE (subtype = text, \"collation\" = 'en_US')"
-        );
-    }
-
-    public function test_create_range_type_with_options() : void
-    {
-        $builder = create()->rangeType('floatrange')
-            ->subtype('float8')
-            ->subtypeOpclass('float8_ops');
-
-        $this->assertCreateRangeTypeQuery(
-            $builder,
-            "CREATE TYPE floatrange AS RANGE (subtype = float8, subtype_opclass = 'float8_ops')"
-        );
-    }
-
-    public function test_create_range_type_with_schema() : void
-    {
-        $builder = create()->rangeType('public.floatrange')
-            ->subtype('float8');
-
-        $this->assertCreateRangeTypeQuery(
-            $builder,
-            'CREATE TYPE public.floatrange AS RANGE (subtype = float8)'
-        );
-    }
-
-    public function test_drop_type_cascade() : void
-    {
-        $builder = drop()->type('address')
-            ->cascade();
-
-        $this->assertDropTypeQuery(
-            $builder,
-            'DROP TYPE address CASCADE'
-        );
-    }
-
-    public function test_drop_type_if_exists() : void
-    {
-        $builder = drop()->type('address')
-            ->ifExists();
-
-        $this->assertDropTypeQuery(
-            $builder,
-            'DROP TYPE IF EXISTS address'
-        );
-    }
-
-    public function test_drop_type_if_exists_cascade() : void
-    {
-        $builder = drop()->type('address')
-            ->ifExists()
-            ->cascade();
-
-        $this->assertDropTypeQuery(
-            $builder,
-            'DROP TYPE IF EXISTS address CASCADE'
-        );
-    }
-
-    public function test_drop_type_multiple() : void
-    {
-        $builder = drop()->type('address', 'status', 'floatrange');
-
-        $this->assertDropTypeQuery(
-            $builder,
-            'DROP TYPE address, status, floatrange'
-        );
-    }
-
-    public function test_drop_type_restrict() : void
-    {
-        $builder = drop()->type('address')
-            ->restrict();
-
-        $this->assertDropTypeQuery(
-            $builder,
-            'DROP TYPE address'
-        );
-    }
-
-    public function test_drop_type_simple() : void
-    {
-        $builder = drop()->type('address');
-
-        $this->assertDropTypeQuery(
-            $builder,
-            'DROP TYPE address'
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/UpdateBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/UpdateBuilderTest.php
deleted file mode 100644
index 2cf4303b8f..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/UpdateBuilderTest.php
+++ /dev/null
@@ -1,161 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{
-    col,
-    eq,
-    literal,
-    param,
-    select,
-    sub_select,
-    table,
-    update
-};
-
-final class UpdateBuilderTest extends PGQueryTestCase
-{
-    public function test_simple_update() : void
-    {
-        $query = update()
-            ->update('users')
-            ->set('name', literal('John'))
-            ->where(eq(col('id'), literal(1)));
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            "UPDATE users SET name = 'John' WHERE id = 1"
-        );
-    }
-
-    public function test_update_with_alias() : void
-    {
-        $query = update()
-            ->update('users', 'u')
-            ->set('name', literal('John'))
-            ->where(eq(col('u.id'), literal(1)));
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            "UPDATE users u SET name = 'John' WHERE u.id = 1"
-        );
-    }
-
-    public function test_update_with_column_expression() : void
-    {
-        $query = update()
-            ->update('products')
-            ->set('price', col('price'))
-            ->where(eq(col('id'), literal(1)));
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            'UPDATE products SET price = price WHERE id = 1'
-        );
-    }
-
-    public function test_update_with_from() : void
-    {
-        $query = update()
-            ->update('orders')
-            ->set('status', literal('completed'))
-            ->from(table('users'))
-            ->where(eq(col('orders.user_id'), col('users.id')));
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            "UPDATE orders SET status = 'completed' FROM users WHERE orders.user_id = users.id"
-        );
-    }
-
-    public function test_update_with_multiple_set() : void
-    {
-        $query = update()
-            ->update('users')
-            ->set('name', literal('John'))
-            ->set('email', literal('john@example.com'))
-            ->where(eq(col('id'), literal(1)));
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            "UPDATE users SET name = 'John', email = 'john@example.com' WHERE id = 1"
-        );
-    }
-
-    public function test_update_with_parameters() : void
-    {
-        $query = update()
-            ->update('users')
-            ->set('name', param(1))
-            ->where(eq(col('id'), param(2)));
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            'UPDATE users SET name = $1 WHERE id = $2'
-        );
-    }
-
-    public function test_update_with_returning() : void
-    {
-        $query = update()
-            ->update('users')
-            ->set('name', literal('John'))
-            ->where(eq(col('id'), literal(1)))
-            ->returning(col('id'), col('name'));
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            "UPDATE users SET name = 'John' WHERE id = 1 RETURNING id, name"
-        );
-    }
-
-    public function test_update_with_returning_all() : void
-    {
-        $query = update()
-            ->update('users')
-            ->set('name', literal('John'))
-            ->where(eq(col('id'), literal(1)))
-            ->returningAll();
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            "UPDATE users SET name = 'John' WHERE id = 1 RETURNING *"
-        );
-    }
-
-    public function test_update_with_set_all() : void
-    {
-        $query = update()
-            ->update('users')
-            ->setAll([
-                'name' => literal('John'),
-                'email' => literal('john@example.com'),
-            ])
-            ->where(eq(col('id'), literal(1)));
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            "UPDATE users SET name = 'John', email = 'john@example.com' WHERE id = 1"
-        );
-    }
-
-    public function test_update_with_subquery_in_set() : void
-    {
-        $subquery = select()
-            ->select(col('avg_price'))
-            ->from(table('price_stats'))
-            ->where(eq(col('category'), col('products.category')));
-
-        $query = update()
-            ->update('products')
-            ->set('price', sub_select($subquery))
-            ->where(eq(col('id'), literal(1)));
-
-        $this->assertUpdateQueryRoundTrip(
-            $query,
-            'UPDATE products SET price = (SELECT avg_price FROM price_stats WHERE category = products.category) WHERE id = 1'
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/ViewBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/ViewBuilderTest.php
deleted file mode 100644
index 53b9018159..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/ViewBuilderTest.php
+++ /dev/null
@@ -1,504 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
-
-use function Flow\PostgreSql\DSL\{
-    agg_count,
-    alter,
-    col,
-    create,
-    drop,
-    eq,
-    literal,
-    refresh_materialized_view,
-    select,
-    star,
-    table
-};
-
-final class ViewBuilderTest extends PGQueryTestCase
-{
-    public function test_alter_materialized_view_owner_to() : void
-    {
-        $builder = alter()->materializedView('my_matview')
-            ->ownerTo('new_owner');
-
-        $this->assertAlterMaterializedViewOwnerQuery(
-            $builder,
-            'ALTER MATERIALIZED VIEW my_matview OWNER TO new_owner'
-        );
-    }
-
-    public function test_alter_materialized_view_rename() : void
-    {
-        $builder = alter()->materializedView('old_matview')
-            ->renameTo('new_matview');
-
-        $this->assertAlterMaterializedViewRenameQuery(
-            $builder,
-            'ALTER MATERIALIZED VIEW old_matview RENAME TO new_matview'
-        );
-    }
-
-    public function test_alter_materialized_view_rename_if_exists() : void
-    {
-        $builder = alter()->materializedView('old_matview')
-            ->ifExists()
-            ->renameTo('new_matview');
-
-        $this->assertAlterMaterializedViewRenameQuery(
-            $builder,
-            'ALTER MATERIALIZED VIEW IF EXISTS old_matview RENAME TO new_matview'
-        );
-    }
-
-    public function test_alter_materialized_view_set_schema() : void
-    {
-        $builder = alter()->materializedView('my_matview')
-            ->setSchema('archive');
-
-        $this->assertAlterMaterializedViewSchemaQuery(
-            $builder,
-            'ALTER MATERIALIZED VIEW my_matview SET SCHEMA archive'
-        );
-    }
-
-    public function test_alter_materialized_view_set_tablespace() : void
-    {
-        $builder = alter()->materializedView('my_matview')
-            ->setTablespace('fast_storage');
-
-        $this->assertAlterMaterializedViewTablespaceQuery(
-            $builder,
-            'ALTER MATERIALIZED VIEW my_matview SET TABLESPACE fast_storage'
-        );
-    }
-
-    public function test_alter_materialized_view_set_tablespace_if_exists() : void
-    {
-        $builder = alter()->materializedView('my_matview')
-            ->ifExists()
-            ->setTablespace('fast_storage');
-
-        $this->assertAlterMaterializedViewTablespaceQuery(
-            $builder,
-            'ALTER MATERIALIZED VIEW IF EXISTS my_matview SET TABLESPACE fast_storage'
-        );
-    }
-
-    public function test_alter_view_owner_to() : void
-    {
-        $builder = alter()->view('my_view')
-            ->ownerTo('new_owner');
-
-        $this->assertAlterViewOwnerQuery(
-            $builder,
-            'ALTER VIEW my_view OWNER TO new_owner'
-        );
-    }
-
-    public function test_alter_view_rename() : void
-    {
-        $builder = alter()->view('old_view')
-            ->renameTo('new_view');
-
-        $this->assertAlterViewRenameQuery(
-            $builder,
-            'ALTER VIEW old_view RENAME TO new_view'
-        );
-    }
-
-    public function test_alter_view_rename_if_exists() : void
-    {
-        $builder = alter()->view('old_view')
-            ->ifExists()
-            ->renameTo('new_view');
-
-        $this->assertAlterViewRenameQuery(
-            $builder,
-            'ALTER VIEW IF EXISTS old_view RENAME TO new_view'
-        );
-    }
-
-    public function test_alter_view_rename_with_schema() : void
-    {
-        $builder = alter()->view('public.old_view')
-            ->renameTo('new_view');
-
-        $this->assertAlterViewRenameQuery(
-            $builder,
-            'ALTER VIEW public.old_view RENAME TO new_view'
-        );
-    }
-
-    public function test_alter_view_set_schema() : void
-    {
-        $builder = alter()->view('my_view')
-            ->setSchema('archive');
-
-        $this->assertAlterViewSchemaQuery(
-            $builder,
-            'ALTER VIEW my_view SET SCHEMA archive'
-        );
-    }
-
-    public function test_alter_view_set_schema_if_exists() : void
-    {
-        $builder = alter()->view('my_view')
-            ->ifExists()
-            ->setSchema('archive');
-
-        $this->assertAlterViewSchemaQuery(
-            $builder,
-            'ALTER VIEW IF EXISTS my_view SET SCHEMA archive'
-        );
-    }
-
-    public function test_create_materialized_view() : void
-    {
-        $builder = create()->materializedView('user_stats')
-            ->as(select(star())->from(table('users')));
-
-        $this->assertCreateMaterializedViewQuery(
-            $builder,
-            'CREATE MATERIALIZED VIEW user_stats AS SELECT * FROM users'
-        );
-    }
-
-    public function test_create_materialized_view_if_not_exists() : void
-    {
-        $builder = create()->materializedView('user_stats')
-            ->ifNotExists()
-            ->as(select(star())->from(table('users')));
-
-        $this->assertCreateMaterializedViewQuery(
-            $builder,
-            'CREATE MATERIALIZED VIEW IF NOT EXISTS user_stats AS SELECT * FROM users'
-        );
-    }
-
-    public function test_create_materialized_view_using_access_method() : void
-    {
-        $builder = create()->materializedView('user_stats')
-            ->using('heap')
-            ->as(select(star())->from(table('users')));
-
-        $this->assertCreateMaterializedViewQuery(
-            $builder,
-            'CREATE MATERIALIZED VIEW user_stats USING heap AS SELECT * FROM users'
-        );
-    }
-
-    public function test_create_materialized_view_with_columns() : void
-    {
-        $builder = create()->materializedView('user_stats')
-            ->columns('user_id', 'order_count')
-            ->as(select(col('id'), agg_count())->from(table('users')));
-
-        $this->assertCreateMaterializedViewQuery(
-            $builder,
-            'CREATE MATERIALIZED VIEW user_stats(user_id, order_count) AS SELECT id, count(*) FROM users'
-        );
-    }
-
-    public function test_create_materialized_view_with_data() : void
-    {
-        $builder = create()->materializedView('user_stats')
-            ->as(select()->select(star())->from(table('users')))
-            ->withData();
-
-        $this->assertCreateMaterializedViewQuery(
-            $builder,
-            'CREATE MATERIALIZED VIEW user_stats AS SELECT * FROM users'
-        );
-    }
-
-    public function test_create_materialized_view_with_no_data() : void
-    {
-        $builder = create()->materializedView('user_stats')
-            ->as(select()->select(star())->from(table('users')))
-            ->withNoData();
-
-        $this->assertCreateMaterializedViewQuery(
-            $builder,
-            'CREATE MATERIALIZED VIEW user_stats AS SELECT * FROM users  WITH NO DATA'
-        );
-    }
-
-    public function test_create_materialized_view_with_schema() : void
-    {
-        $builder = create()->materializedView('analytics.user_stats')
-            ->as(select(star())->from(table('users')));
-
-        $this->assertCreateMaterializedViewQuery(
-            $builder,
-            'CREATE MATERIALIZED VIEW analytics.user_stats AS SELECT * FROM users'
-        );
-    }
-
-    public function test_create_materialized_view_with_tablespace() : void
-    {
-        $builder = create()->materializedView('user_stats')
-            ->as(select()->select(star())->from(table('users')))
-            ->tablespace('fast_storage');
-
-        $this->assertCreateMaterializedViewQuery(
-            $builder,
-            'CREATE MATERIALIZED VIEW user_stats TABLESPACE fast_storage AS SELECT * FROM users'
-        );
-    }
-
-    public function test_create_or_replace_view() : void
-    {
-        $builder = create()->view('active_users')
-            ->orReplace()
-            ->as(select(star())->from(table('users')));
-
-        $this->assertCreateViewQuery(
-            $builder,
-            'CREATE OR REPLACE VIEW active_users AS SELECT * FROM users'
-        );
-    }
-
-    /**
-     * Note: CREATE RECURSIVE VIEW is syntactic sugar that PostgreSQL internally transforms
-     * into a CTE-based query structure. The pg_query deparser has issues handling this
-     * transformed AST (segfaults), so this feature is not fully supported in the query builder.
-     * Use a regular view with a CTE instead for recursive queries.
-     */
-    public function test_create_recursive_view_outputs_as_regular_view() : void
-    {
-        $builder = create()->view('subordinates')
-            ->recursive()
-            ->columns('id', 'name', 'manager_id')
-            ->as(select(col('id'), col('name'), col('manager_id'))->from(table('employees')));
-
-        $this->assertCreateViewQuery(
-            $builder,
-            'CREATE VIEW subordinates (id, name, manager_id) AS SELECT id, name, manager_id FROM employees'
-        );
-    }
-
-    public function test_create_temporary_view() : void
-    {
-        $builder = create()->view('temp_users')
-            ->temporary()
-            ->as(select(star())->from(table('users')));
-
-        $this->assertCreateViewQuery(
-            $builder,
-            'CREATE TEMPORARY VIEW temp_users AS SELECT * FROM users'
-        );
-    }
-
-    public function test_create_view_simple() : void
-    {
-        $builder = create()->view('active_users')
-            ->as(select(star())->from(table('users')));
-
-        $this->assertCreateViewQuery(
-            $builder,
-            'CREATE VIEW active_users AS SELECT * FROM users'
-        );
-    }
-
-    public function test_create_view_with_cascaded_check_option() : void
-    {
-        $builder = create()->view('active_users')
-            ->as(select()->select(star())->from(table('users')))
-            ->withCascadedCheckOption();
-
-        $this->assertCreateViewQuery(
-            $builder,
-            'CREATE VIEW active_users AS SELECT * FROM users WITH CHECK OPTION'
-        );
-    }
-
-    public function test_create_view_with_check_option() : void
-    {
-        $builder = create()->view('active_users')
-            ->as(select(star())->from(table('users'))->where(eq(col('active'), literal(true))))
-            ->withCheckOption();
-
-        $this->assertCreateViewQuery(
-            $builder,
-            'CREATE VIEW active_users AS SELECT * FROM users WHERE active = true WITH CHECK OPTION'
-        );
-    }
-
-    public function test_create_view_with_columns() : void
-    {
-        $builder = create()->view('user_info')
-            ->columns('user_id', 'user_name', 'email_address')
-            ->as(select(col('id'), col('name'), col('email'))->from(table('users')));
-
-        $this->assertCreateViewQuery(
-            $builder,
-            'CREATE VIEW user_info (user_id, user_name, email_address) AS SELECT id, name, email FROM users'
-        );
-    }
-
-    public function test_create_view_with_local_check_option() : void
-    {
-        $builder = create()->view('active_users')
-            ->as(select()->select(star())->from(table('users')))
-            ->withLocalCheckOption();
-
-        $this->assertCreateViewQuery(
-            $builder,
-            'CREATE VIEW active_users AS SELECT * FROM users WITH LOCAL CHECK OPTION'
-        );
-    }
-
-    public function test_create_view_with_schema() : void
-    {
-        $builder = create()->view('public.active_users')
-            ->as(select(star())->from(table('users')));
-
-        $this->assertCreateViewQuery(
-            $builder,
-            'CREATE VIEW public.active_users AS SELECT * FROM users'
-        );
-    }
-
-    public function test_drop_materialized_view_if_exists_cascade() : void
-    {
-        $builder = drop()->materializedView('user_stats')
-            ->ifExists()
-            ->cascade();
-
-        $this->assertDropMaterializedViewQuery(
-            $builder,
-            'DROP MATERIALIZED VIEW IF EXISTS user_stats CASCADE'
-        );
-    }
-
-    public function test_drop_materialized_view_simple() : void
-    {
-        $builder = drop()->materializedView('user_stats');
-
-        $this->assertDropMaterializedViewQuery(
-            $builder,
-            'DROP MATERIALIZED VIEW user_stats'
-        );
-    }
-
-    public function test_drop_view_cascade() : void
-    {
-        $builder = drop()->view('active_users')->cascade();
-
-        $this->assertDropViewQuery(
-            $builder,
-            'DROP VIEW active_users CASCADE'
-        );
-    }
-
-    public function test_drop_view_if_exists() : void
-    {
-        $builder = drop()->view('active_users')->ifExists();
-
-        $this->assertDropViewQuery(
-            $builder,
-            'DROP VIEW IF EXISTS active_users'
-        );
-    }
-
-    public function test_drop_view_if_exists_cascade() : void
-    {
-        $builder = drop()->view('active_users')
-            ->ifExists()
-            ->cascade();
-
-        $this->assertDropViewQuery(
-            $builder,
-            'DROP VIEW IF EXISTS active_users CASCADE'
-        );
-    }
-
-    public function test_drop_view_multiple() : void
-    {
-        $builder = drop()->view('view1', 'view2', 'view3');
-
-        $this->assertDropViewQuery(
-            $builder,
-            'DROP VIEW view1, view2, view3'
-        );
-    }
-
-    public function test_drop_view_simple() : void
-    {
-        $builder = drop()->view('active_users');
-
-        $this->assertDropViewQuery(
-            $builder,
-            'DROP VIEW active_users'
-        );
-    }
-
-    public function test_refresh_materialized_view_concurrently() : void
-    {
-        $builder = refresh_materialized_view('user_stats')
-            ->concurrently();
-
-        $this->assertRefreshMaterializedViewQuery(
-            $builder,
-            'REFRESH MATERIALIZED VIEW CONCURRENTLY user_stats'
-        );
-    }
-
-    public function test_refresh_materialized_view_concurrently_with_data() : void
-    {
-        $builder = refresh_materialized_view('user_stats')
-            ->concurrently()
-            ->withData();
-
-        $this->assertRefreshMaterializedViewQuery(
-            $builder,
-            'REFRESH MATERIALIZED VIEW CONCURRENTLY user_stats'
-        );
-    }
-
-    public function test_refresh_materialized_view_simple() : void
-    {
-        $builder = refresh_materialized_view('user_stats');
-
-        $this->assertRefreshMaterializedViewQuery(
-            $builder,
-            'REFRESH MATERIALIZED VIEW user_stats'
-        );
-    }
-
-    public function test_refresh_materialized_view_with_data() : void
-    {
-        $builder = refresh_materialized_view('user_stats')
-            ->withData();
-
-        $this->assertRefreshMaterializedViewQuery(
-            $builder,
-            'REFRESH MATERIALIZED VIEW user_stats'
-        );
-    }
-
-    public function test_refresh_materialized_view_with_no_data() : void
-    {
-        $builder = refresh_materialized_view('user_stats')
-            ->withNoData();
-
-        $this->assertRefreshMaterializedViewQuery(
-            $builder,
-            'REFRESH MATERIALIZED VIEW user_stats WITH NO DATA'
-        );
-    }
-
-    public function test_refresh_materialized_view_with_schema() : void
-    {
-        $builder = refresh_materialized_view('analytics.user_stats');
-
-        $this->assertRefreshMaterializedViewQuery(
-            $builder,
-            'REFRESH MATERIALIZED VIEW analytics.user_stats'
-        );
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/RowMapper/ConstructorMapperTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/RowMapper/ConstructorMapperTest.php
index bf4c44037f..254eeb494f 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/RowMapper/ConstructorMapperTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/RowMapper/ConstructorMapperTest.php
@@ -10,13 +10,6 @@
 
 final class ConstructorMapperTest extends TestCase
 {
-    private ConstructorMapper $mapper;
-
-    protected function setUp() : void
-    {
-        $this->mapper = new ConstructorMapper();
-    }
-
     public function test_allows_extra_columns_in_row() : void
     {
         $row = [
@@ -26,7 +19,7 @@ public function test_allows_extra_columns_in_row() : void
             'extra_column' => 'ignored',
         ];
 
-        $result = $this->mapper->map(SimpleDto::class, $row);
+        $result = (new ConstructorMapper(SimpleDto::class))->map($row);
 
         self::assertInstanceOf(SimpleDto::class, $result);
         self::assertSame(1, $result->id);
@@ -40,7 +33,7 @@ public function test_handles_null_value_in_row() : void
             'nickname' => null,
         ];
 
-        $result = $this->mapper->map(NullableDto::class, $row);
+        $result = (new ConstructorMapper(NullableDto::class))->map($row);
 
         self::assertNull($result->nickname);
     }
@@ -63,7 +56,7 @@ public function test_maps_all_supported_types() : void
             'tags' => $tags,
         ];
 
-        $result = $this->mapper->map(FullTypedDto::class, $row);
+        $result = (new ConstructorMapper(FullTypedDto::class))->map($row);
 
         self::assertInstanceOf(FullTypedDto::class, $result);
         self::assertSame(42, $result->id);
@@ -84,7 +77,7 @@ public function test_maps_array_type() : void
             'tags' => $tags,
         ];
 
-        $result = $this->mapper->map(ArrayDto::class, $row);
+        $result = (new ConstructorMapper(ArrayDto::class))->map($row);
 
         self::assertInstanceOf(ArrayDto::class, $result);
         self::assertSame($tags, $result->tags);
@@ -98,7 +91,7 @@ public function test_maps_bool_type() : void
             'verified' => false,
         ];
 
-        $result = $this->mapper->map(BoolDto::class, $row);
+        $result = (new ConstructorMapper(BoolDto::class))->map($row);
 
         self::assertInstanceOf(BoolDto::class, $result);
         self::assertTrue($result->active);
@@ -113,7 +106,7 @@ public function test_maps_datetime_type() : void
             'createdAt' => $createdAt,
         ];
 
-        $result = $this->mapper->map(DateTimeDto::class, $row);
+        $result = (new ConstructorMapper(DateTimeDto::class))->map($row);
 
         self::assertInstanceOf(DateTimeDto::class, $result);
         self::assertSame($createdAt, $result->createdAt);
@@ -127,7 +120,7 @@ public function test_maps_float_special_values() : void
             'discount' => \NAN,
         ];
 
-        $result = $this->mapper->map(FloatDto::class, $row);
+        $result = (new ConstructorMapper(FloatDto::class))->map($row);
 
         self::assertInstanceOf(FloatDto::class, $result);
         self::assertSame(\INF, $result->price);
@@ -142,7 +135,7 @@ public function test_maps_float_type() : void
             'discount' => 0.15,
         ];
 
-        $result = $this->mapper->map(FloatDto::class, $row);
+        $result = (new ConstructorMapper(FloatDto::class))->map($row);
 
         self::assertInstanceOf(FloatDto::class, $result);
         self::assertSame(99.99, $result->price);
@@ -157,7 +150,7 @@ public function test_maps_json_type() : void
             'metadata' => $json,
         ];
 
-        $result = $this->mapper->map(JsonDto::class, $row);
+        $result = (new ConstructorMapper(JsonDto::class))->map($row);
 
         self::assertInstanceOf(JsonDto::class, $result);
         self::assertSame($json, $result->metadata);
@@ -170,7 +163,7 @@ public function test_maps_nullable_complex_types() : void
             'id' => 1,
         ];
 
-        $result = $this->mapper->map(NullableTypedDto::class, $row);
+        $result = (new ConstructorMapper(NullableTypedDto::class))->map($row);
 
         self::assertInstanceOf(NullableTypedDto::class, $result);
         self::assertSame(1, $result->id);
@@ -195,7 +188,7 @@ public function test_maps_nullable_complex_types_with_values() : void
             'tags' => $tags,
         ];
 
-        $result = $this->mapper->map(NullableTypedDto::class, $row);
+        $result = (new ConstructorMapper(NullableTypedDto::class))->map($row);
 
         self::assertInstanceOf(NullableTypedDto::class, $result);
         self::assertSame($createdAt, $result->createdAt);
@@ -211,7 +204,7 @@ public function test_maps_nullable_parameters() : void
             'name' => 'John Doe',
         ];
 
-        $result = $this->mapper->map(NullableDto::class, $row);
+        $result = (new ConstructorMapper(NullableDto::class))->map($row);
 
         self::assertInstanceOf(NullableDto::class, $result);
         self::assertSame(1, $result->id);
@@ -227,7 +220,7 @@ public function test_maps_row_to_simple_dto() : void
             'email' => 'john@example.com',
         ];
 
-        $result = $this->mapper->map(SimpleDto::class, $row);
+        $result = (new ConstructorMapper(SimpleDto::class))->map($row);
 
         self::assertInstanceOf(SimpleDto::class, $result);
         self::assertSame(1, $result->id);
@@ -243,7 +236,7 @@ public function test_maps_uuid_type() : void
             'uuid' => $uuid,
         ];
 
-        $result = $this->mapper->map(UuidDto::class, $row);
+        $result = (new ConstructorMapper(UuidDto::class))->map($row);
 
         self::assertInstanceOf(UuidDto::class, $result);
         self::assertSame($uuid, $result->uuid);
@@ -254,16 +247,7 @@ public function test_throws_for_class_without_constructor() : void
         $this->expectException(MappingException::class);
         $this->expectExceptionMessage('Class has no constructor');
 
-        $this->mapper->map(NoConstructorDto::class, ['id' => 1]);
-    }
-
-    public function test_throws_for_invalid_class() : void
-    {
-        $this->expectException(MappingException::class);
-        $this->expectExceptionMessage('Class does not exist');
-
-        /** @phpstan-ignore argument.type */
-        $this->mapper->map('NonExistentClass', ['id' => 1]);
+        (new ConstructorMapper(NoConstructorDto::class))->map(['id' => 1]);
     }
 
     public function test_throws_for_missing_required_parameter() : void
@@ -275,7 +259,7 @@ public function test_throws_for_missing_required_parameter() : void
         $this->expectException(MappingException::class);
         $this->expectExceptionMessage('Property "name" not found');
 
-        $this->mapper->map(SimpleDto::class, $row);
+        (new ConstructorMapper(SimpleDto::class))->map($row);
     }
 
     public function test_uses_default_values() : void
@@ -285,7 +269,7 @@ public function test_uses_default_values() : void
             'name' => 'John Doe',
         ];
 
-        $result = $this->mapper->map(DefaultValueDto::class, $row);
+        $result = (new ConstructorMapper(DefaultValueDto::class))->map($row);
 
         self::assertInstanceOf(DefaultValueDto::class, $result);
         self::assertSame(1, $result->id);
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/ParameterFormatterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/ParameterFormatterTest.php
index 7047070483..4fd765fa52 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/ParameterFormatterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/ParameterFormatterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Telemetry\ParameterFormatter;
 use Flow\PostgreSql\Client\TypedValue;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\TestCase;
 
 final class ParameterFormatterTest extends TestCase
@@ -109,7 +109,7 @@ public function test_convert_to_string_string() : void
     public function test_convert_to_string_typed_value() : void
     {
         $formatter = new ParameterFormatter();
-        $typedValue = new TypedValue('some_value', PostgreSqlType::TEXT);
+        $typedValue = new TypedValue('some_value', ValueType::TEXT);
 
         $result = $formatter->convertToString($typedValue);
 
@@ -119,7 +119,7 @@ public function test_convert_to_string_typed_value() : void
     public function test_convert_to_string_typed_value_with_nested_value() : void
     {
         $formatter = new ParameterFormatter();
-        $typedValue = new TypedValue(['a', 'b', 'c'], PostgreSqlType::TEXT_ARRAY);
+        $typedValue = new TypedValue(['a', 'b', 'c'], ValueType::TEXT_ARRAY);
 
         $result = $formatter->convertToString($typedValue);
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/TraceableClientTelemetryTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/TraceableClientTelemetryTest.php
index 47539f4f26..082be8b584 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/TraceableClientTelemetryTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/TraceableClientTelemetryTest.php
@@ -178,7 +178,7 @@ public function test_fetch_all_into_creates_span_with_correct_row_count() : void
         $mockClient->method('fetchAllInto')->willReturn($users);
 
         $client = traceable_postgresql_client($mockClient, $config);
-        $client->fetchAllInto(\stdClass::class, 'SELECT * FROM users');
+        $client->fetchAllInto(new \Flow\PostgreSql\Client\RowMapper\ConstructorMapper(\stdClass::class), 'SELECT * FROM users');
 
         $spans = $spanProcessor->endedSpans();
         self::assertCount(1, $spans);
@@ -198,7 +198,7 @@ public function test_fetch_into_creates_span_with_correct_row_count() : void
         $mockClient->method('fetchInto')->willReturn($user);
 
         $client = traceable_postgresql_client($mockClient, $config);
-        $client->fetchInto(\stdClass::class, 'SELECT * FROM users WHERE id = $1', [1]);
+        $client->fetchInto(new \Flow\PostgreSql\Client\RowMapper\ConstructorMapper(\stdClass::class), 'SELECT * FROM users WHERE id = $1', [1]);
 
         $spans = $spanProcessor->endedSpans();
         self::assertCount(1, $spans);
@@ -218,7 +218,7 @@ public function test_fetch_one_into_creates_span() : void
         $mockClient->method('fetchOneInto')->willReturn($user);
 
         $client = traceable_postgresql_client($mockClient, $config);
-        $client->fetchOneInto(\stdClass::class, 'SELECT * FROM users WHERE id = $1', [1]);
+        $client->fetchOneInto(new \Flow\PostgreSql\Client\RowMapper\ConstructorMapper(\stdClass::class), 'SELECT * FROM users WHERE id = $1', [1]);
 
         $spans = $spanProcessor->endedSpans();
         self::assertCount(1, $spans);
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/TraceableCursorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/TraceableCursorTest.php
index aa70097e04..729d63c7d7 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/TraceableCursorTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Telemetry/TraceableCursorTest.php
@@ -147,7 +147,7 @@ public function test_map_completes_span_after_full_iteration() : void
 
         $objects = [];
 
-        foreach ($cursor->map(\stdClass::class) as $object) {
+        foreach ($cursor->map(new \Flow\PostgreSql\Client\RowMapper\ConstructorMapper(\stdClass::class)) as $object) {
             $objects[] = $object;
         }
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/BoolArrayConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/BoolArrayConverterTest.php
index 073364032a..1420b6a4e9 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/BoolArrayConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/BoolArrayConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\BoolArrayConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -61,7 +61,7 @@ public function test_supported_types() : void
         $converter = new BoolArrayConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::BOOL_ARRAY, $types);
+        self::assertContains(ValueType::BOOL_ARRAY, $types);
         self::assertCount(1, $types);
     }
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/BooleanConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/BooleanConverterTest.php
index 7dcf8e304b..e00c67d92c 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/BooleanConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/BooleanConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\BooleanConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -52,7 +52,7 @@ public function test_null_handling() : void
     public function test_supported_types() : void
     {
         $converter = new BooleanConverter();
-        self::assertContains(PostgreSqlType::BOOL, $converter->supportedTypes());
+        self::assertContains(ValueType::BOOL, $converter->supportedTypes());
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/ByteaConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/ByteaConverterTest.php
index 0de66b1cb4..362d007ad7 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/ByteaConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/ByteaConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\ByteaConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -54,7 +54,7 @@ public function test_null_handling() : void
     public function test_supported_types() : void
     {
         $converter = new ByteaConverter();
-        self::assertContains(PostgreSqlType::BYTEA, $converter->supportedTypes());
+        self::assertContains(ValueType::BYTEA, $converter->supportedTypes());
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/CidrConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/CidrConverterTest.php
index b2a9f7e07a..ae8bbf0151 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/CidrConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/CidrConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\CidrConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -59,7 +59,7 @@ public function test_null_handling() : void
     public function test_supported_types() : void
     {
         $converter = new CidrConverter();
-        self::assertContains(PostgreSqlType::CIDR, $converter->supportedTypes());
+        self::assertContains(ValueType::CIDR, $converter->supportedTypes());
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/DateConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/DateConverterTest.php
index 11f99adff2..0ae4e6e506 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/DateConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/DateConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\DateConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -54,7 +54,7 @@ public function test_null_handling() : void
     public function test_supported_types() : void
     {
         $converter = new DateConverter();
-        self::assertContains(PostgreSqlType::DATE, $converter->supportedTypes());
+        self::assertContains(ValueType::DATE, $converter->supportedTypes());
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/DateTimeConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/DateTimeConverterTest.php
index 47c313a196..b57419ad1d 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/DateTimeConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/DateTimeConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\DateTimeConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -55,8 +55,8 @@ public function test_supported_types() : void
         $converter = new DateTimeConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::TIMESTAMP, $types);
-        self::assertContains(PostgreSqlType::TIMESTAMPTZ, $types);
+        self::assertContains(ValueType::TIMESTAMP, $types);
+        self::assertContains(ValueType::TIMESTAMPTZ, $types);
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/FloatArrayConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/FloatArrayConverterTest.php
index c78dc3eff3..8c7465f803 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/FloatArrayConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/FloatArrayConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\FloatArrayConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -64,8 +64,8 @@ public function test_supported_types() : void
         $converter = new FloatArrayConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::FLOAT4_ARRAY, $types);
-        self::assertContains(PostgreSqlType::FLOAT8_ARRAY, $types);
+        self::assertContains(ValueType::FLOAT4_ARRAY, $types);
+        self::assertContains(ValueType::FLOAT8_ARRAY, $types);
         self::assertCount(2, $types);
     }
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/FloatConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/FloatConverterTest.php
index 95a5de540d..dce321fc64 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/FloatConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/FloatConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\FloatConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -58,8 +58,8 @@ public function test_supported_types() : void
         $converter = new FloatConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::FLOAT4, $types);
-        self::assertContains(PostgreSqlType::FLOAT8, $types);
+        self::assertContains(ValueType::FLOAT4, $types);
+        self::assertContains(ValueType::FLOAT8, $types);
         self::assertCount(2, $types);
     }
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/InetConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/InetConverterTest.php
index 226c461ff0..d2d9a9be0b 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/InetConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/InetConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\InetConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -57,7 +57,7 @@ public function test_null_handling() : void
     public function test_supported_types() : void
     {
         $converter = new InetConverter();
-        self::assertContains(PostgreSqlType::INET, $converter->supportedTypes());
+        self::assertContains(ValueType::INET, $converter->supportedTypes());
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntArrayConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntArrayConverterTest.php
index 1247627e90..7a16557630 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntArrayConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntArrayConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\IntArrayConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -63,9 +63,9 @@ public function test_supported_types() : void
         $converter = new IntArrayConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::INT2_ARRAY, $types);
-        self::assertContains(PostgreSqlType::INT4_ARRAY, $types);
-        self::assertContains(PostgreSqlType::INT8_ARRAY, $types);
+        self::assertContains(ValueType::INT2_ARRAY, $types);
+        self::assertContains(ValueType::INT4_ARRAY, $types);
+        self::assertContains(ValueType::INT8_ARRAY, $types);
         self::assertCount(3, $types);
     }
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntegerConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntegerConverterTest.php
index 3560e3371b..1d06baca21 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntegerConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntegerConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\IntegerConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -56,9 +56,9 @@ public function test_supported_types() : void
         $converter = new IntegerConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::INT2, $types);
-        self::assertContains(PostgreSqlType::INT4, $types);
-        self::assertContains(PostgreSqlType::INT8, $types);
+        self::assertContains(ValueType::INT2, $types);
+        self::assertContains(ValueType::INT4, $types);
+        self::assertContains(ValueType::INT8, $types);
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntervalConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntervalConverterTest.php
index 4765b24fe3..af9cecbe38 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntervalConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/IntervalConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\IntervalConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -60,7 +60,7 @@ public function test_null_handling() : void
     public function test_supported_types() : void
     {
         $converter = new IntervalConverter();
-        self::assertContains(PostgreSqlType::INTERVAL, $converter->supportedTypes());
+        self::assertContains(ValueType::INTERVAL, $converter->supportedTypes());
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/JsonArrayConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/JsonArrayConverterTest.php
index 9b77312bc6..2c3daa2832 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/JsonArrayConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/JsonArrayConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\JsonArrayConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -78,8 +78,8 @@ public function test_supported_types() : void
         $converter = new JsonArrayConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::JSON_ARRAY, $types);
-        self::assertContains(PostgreSqlType::JSONB_ARRAY, $types);
+        self::assertContains(ValueType::JSON_ARRAY, $types);
+        self::assertContains(ValueType::JSONB_ARRAY, $types);
         self::assertCount(2, $types);
     }
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/JsonConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/JsonConverterTest.php
index 44b0810848..61ef549d8c 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/JsonConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/JsonConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\JsonConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -78,8 +78,8 @@ public function test_supported_types() : void
         $converter = new JsonConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::JSON, $types);
-        self::assertContains(PostgreSqlType::JSONB, $types);
+        self::assertContains(ValueType::JSON, $types);
+        self::assertContains(ValueType::JSONB, $types);
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/MoneyConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/MoneyConverterTest.php
index 38b5c23644..5d6f6dc46c 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/MoneyConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/MoneyConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\MoneyConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -55,7 +55,7 @@ public function test_null_handling() : void
     public function test_supported_types() : void
     {
         $converter = new MoneyConverter();
-        self::assertContains(PostgreSqlType::MONEY, $converter->supportedTypes());
+        self::assertContains(ValueType::MONEY, $converter->supportedTypes());
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/NumericConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/NumericConverterTest.php
index 333549eb2c..7683ece662 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/NumericConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/NumericConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\NumericConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -53,7 +53,7 @@ public function test_null_handling() : void
     public function test_supported_types() : void
     {
         $converter = new NumericConverter();
-        self::assertContains(PostgreSqlType::NUMERIC, $converter->supportedTypes());
+        self::assertContains(ValueType::NUMERIC, $converter->supportedTypes());
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/StringConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/StringConverterTest.php
index f42564a033..2c6cc92a32 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/StringConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/StringConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\StringConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -76,10 +76,10 @@ public function test_supported_types() : void
         $converter = new StringConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::TEXT, $types);
-        self::assertContains(PostgreSqlType::VARCHAR, $types);
-        self::assertContains(PostgreSqlType::CHAR, $types);
-        self::assertContains(PostgreSqlType::BPCHAR, $types);
+        self::assertContains(ValueType::TEXT, $types);
+        self::assertContains(ValueType::VARCHAR, $types);
+        self::assertContains(ValueType::CHAR, $types);
+        self::assertContains(ValueType::BPCHAR, $types);
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/TextArrayConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/TextArrayConverterTest.php
index 0cf0f10ec1..96ef6cde02 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/TextArrayConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/TextArrayConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\TextArrayConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -67,8 +67,8 @@ public function test_supported_types() : void
         $converter = new TextArrayConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::TEXT_ARRAY, $types);
-        self::assertContains(PostgreSqlType::VARCHAR_ARRAY, $types);
+        self::assertContains(ValueType::TEXT_ARRAY, $types);
+        self::assertContains(ValueType::VARCHAR_ARRAY, $types);
         self::assertCount(2, $types);
     }
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/TimeConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/TimeConverterTest.php
index be8a12cbf7..564343926f 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/TimeConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/TimeConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\TimeConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -58,8 +58,8 @@ public function test_supported_types() : void
         $converter = new TimeConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::TIME, $types);
-        self::assertContains(PostgreSqlType::TIMETZ, $types);
+        self::assertContains(ValueType::TIME, $types);
+        self::assertContains(ValueType::TIMETZ, $types);
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/UuidArrayConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/UuidArrayConverterTest.php
index 469bd67dba..797a39ac2f 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/UuidArrayConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/UuidArrayConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\UuidArrayConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -60,7 +60,7 @@ public function test_supported_types() : void
         $converter = new UuidArrayConverter();
         $types = $converter->supportedTypes();
 
-        self::assertContains(PostgreSqlType::UUID_ARRAY, $types);
+        self::assertContains(ValueType::UUID_ARRAY, $types);
         self::assertCount(1, $types);
     }
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/UuidConverterTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/UuidConverterTest.php
index 1c8945502e..0276928fc5 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/UuidConverterTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/Converter/UuidConverterTest.php
@@ -6,7 +6,7 @@
 
 use Flow\PostgreSql\Client\Exception\ValueConversionException;
 use Flow\PostgreSql\Client\Types\Converter\UuidConverter;
-use Flow\PostgreSql\Client\Types\PostgreSqlType;
+use Flow\PostgreSql\Client\Types\ValueType;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
@@ -64,7 +64,7 @@ public function __toString() : string
     public function test_supported_types() : void
     {
         $converter = new UuidConverter();
-        self::assertContains(PostgreSqlType::UUID, $converter->supportedTypes());
+        self::assertContains(ValueType::UUID, $converter->supportedTypes());
     }
 
     #[DataProvider('provide_valid_values')]
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/ValueConvertersTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/ValueConvertersTest.php
index a83c320948..22c36fec9d 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/ValueConvertersTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Client/Types/ValueConvertersTest.php
@@ -5,7 +5,7 @@
 namespace Flow\PostgreSql\Tests\Unit\Client\Types;
 
 use Flow\PostgreSql\Client\Types\Converter\{BooleanConverter, DateTimeConverter, IntArrayConverter, IntegerConverter, JsonConverter, StringConverter, TextArrayConverter, UuidArrayConverter, UuidConverter};
-use Flow\PostgreSql\Client\Types\{PostgreSqlType, PostgreSqlVersion, ValueConverter, ValueConverters};
+use Flow\PostgreSql\Client\Types\{PostgreSqlVersion, ValueConverter, ValueConverters, ValueType};
 use PHPUnit\Framework\TestCase;
 
 final class ValueConvertersTest extends TestCase
@@ -14,45 +14,45 @@ public function test_array_type_detection() : void
     {
         $converters = ValueConverters::create();
 
-        self::assertTrue($converters->has(PostgreSqlType::INT4_ARRAY));
-        self::assertTrue($converters->has(PostgreSqlType::TEXT_ARRAY));
-        self::assertTrue($converters->has(PostgreSqlType::UUID_ARRAY));
+        self::assertTrue($converters->has(ValueType::INT4_ARRAY));
+        self::assertTrue($converters->has(ValueType::TEXT_ARRAY));
+        self::assertTrue($converters->has(ValueType::UUID_ARRAY));
 
-        self::assertInstanceOf(IntArrayConverter::class, $converters->forPostgreSqlType(PostgreSqlType::INT4_ARRAY));
-        self::assertInstanceOf(TextArrayConverter::class, $converters->forPostgreSqlType(PostgreSqlType::TEXT_ARRAY));
-        self::assertInstanceOf(UuidArrayConverter::class, $converters->forPostgreSqlType(PostgreSqlType::UUID_ARRAY));
+        self::assertInstanceOf(IntArrayConverter::class, $converters->forValueType(ValueType::INT4_ARRAY));
+        self::assertInstanceOf(TextArrayConverter::class, $converters->forValueType(ValueType::TEXT_ARRAY));
+        self::assertInstanceOf(UuidArrayConverter::class, $converters->forValueType(ValueType::UUID_ARRAY));
     }
 
     public function test_create_returns_default_converters() : void
     {
         $converters = ValueConverters::create();
 
-        self::assertTrue($converters->has(PostgreSqlType::TEXT));
-        self::assertTrue($converters->has(PostgreSqlType::INT4));
-        self::assertTrue($converters->has(PostgreSqlType::BOOL));
-        self::assertTrue($converters->has(PostgreSqlType::TIMESTAMP));
-        self::assertTrue($converters->has(PostgreSqlType::UUID));
-        self::assertTrue($converters->has(PostgreSqlType::JSON));
+        self::assertTrue($converters->has(ValueType::TEXT));
+        self::assertTrue($converters->has(ValueType::INT4));
+        self::assertTrue($converters->has(ValueType::BOOL));
+        self::assertTrue($converters->has(ValueType::TIMESTAMP));
+        self::assertTrue($converters->has(ValueType::UUID));
+        self::assertTrue($converters->has(ValueType::JSON));
     }
 
     public function test_fallback_to_string_converter() : void
     {
         $converters = ValueConverters::create();
 
-        $converter = $converters->forPostgreSqlType(PostgreSqlType::OID);
+        $converter = $converters->forValueType(ValueType::OID);
         self::assertInstanceOf(StringConverter::class, $converter);
     }
 
-    public function test_for_postgredata_type_returns_correct_converter() : void
+    public function test_for_postgrecolumn_type_returns_correct_converter() : void
     {
         $converters = ValueConverters::create();
 
-        self::assertInstanceOf(StringConverter::class, $converters->forPostgreSqlType(PostgreSqlType::TEXT));
-        self::assertInstanceOf(IntegerConverter::class, $converters->forPostgreSqlType(PostgreSqlType::INT4));
-        self::assertInstanceOf(BooleanConverter::class, $converters->forPostgreSqlType(PostgreSqlType::BOOL));
-        self::assertInstanceOf(DateTimeConverter::class, $converters->forPostgreSqlType(PostgreSqlType::TIMESTAMP));
-        self::assertInstanceOf(UuidConverter::class, $converters->forPostgreSqlType(PostgreSqlType::UUID));
-        self::assertInstanceOf(JsonConverter::class, $converters->forPostgreSqlType(PostgreSqlType::JSON));
+        self::assertInstanceOf(StringConverter::class, $converters->forValueType(ValueType::TEXT));
+        self::assertInstanceOf(IntegerConverter::class, $converters->forValueType(ValueType::INT4));
+        self::assertInstanceOf(BooleanConverter::class, $converters->forValueType(ValueType::BOOL));
+        self::assertInstanceOf(DateTimeConverter::class, $converters->forValueType(ValueType::TIMESTAMP));
+        self::assertInstanceOf(UuidConverter::class, $converters->forValueType(ValueType::UUID));
+        self::assertInstanceOf(JsonConverter::class, $converters->forValueType(ValueType::JSON));
     }
 
     public function test_register_adds_custom_converter() : void
@@ -62,7 +62,7 @@ public function test_register_adds_custom_converter() : void
         $customConverter = new class implements ValueConverter {
             public function supportedTypes() : array
             {
-                return [PostgreSqlType::XML];
+                return [ValueType::XML];
             }
 
             public function toDatabase(mixed $value) : ?string
@@ -71,24 +71,24 @@ public function toDatabase(mixed $value) : ?string
             }
         };
 
-        self::assertFalse($converters->has(PostgreSqlType::XML));
+        self::assertFalse($converters->has(ValueType::XML));
 
         $converters->register($customConverter);
 
-        self::assertTrue($converters->has(PostgreSqlType::XML));
-        self::assertSame($customConverter, $converters->forPostgreSqlType(PostgreSqlType::XML));
+        self::assertTrue($converters->has(ValueType::XML));
+        self::assertSame($customConverter, $converters->forValueType(ValueType::XML));
     }
 
     public function test_unregister_removes_converter() : void
     {
         $converters = ValueConverters::create();
 
-        self::assertTrue($converters->has(PostgreSqlType::UUID));
+        self::assertTrue($converters->has(ValueType::UUID));
 
-        $converters->unregister(PostgreSqlType::UUID);
+        $converters->unregister(ValueType::UUID);
 
-        self::assertFalse($converters->has(PostgreSqlType::UUID));
-        self::assertInstanceOf(StringConverter::class, $converters->forPostgreSqlType(PostgreSqlType::UUID));
+        self::assertFalse($converters->has(ValueType::UUID));
+        self::assertInstanceOf(StringConverter::class, $converters->forValueType(ValueType::UUID));
     }
 
     public function test_version_specific_multirange_support() : void
@@ -101,8 +101,8 @@ public function test_version_specific_multirange_support() : void
         self::assertTrue(PostgreSqlVersion::V14->supportsMultirange());
         self::assertTrue(PostgreSqlVersion::V17->supportsMultirange());
 
-        self::assertTrue($v13Converters->has(PostgreSqlType::TEXT));
-        self::assertTrue($v14Converters->has(PostgreSqlType::TEXT));
-        self::assertTrue($v17Converters->has(PostgreSqlType::TEXT));
+        self::assertTrue($v13Converters->has(ValueType::TEXT));
+        self::assertTrue($v14Converters->has(ValueType::TEXT));
+        self::assertTrue($v17Converters->has(ValueType::TEXT));
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/DSL/ParametersTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/DSL/ParametersTest.php
new file mode 100644
index 0000000000..d3b24c6f98
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/DSL/ParametersTest.php
@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\DSL;
+
+use function Flow\PostgreSql\DSL\parameters;
+
+use Flow\PostgreSql\QueryBuilder\Expression\Parameter;
+use PHPUnit\Framework\TestCase;
+
+final class ParametersTest extends TestCase
+{
+    public function test_parameters_generates_sequential_params() : void
+    {
+        $params = parameters(3);
+
+        self::assertCount(3, $params);
+        self::assertSame(1, $params[0]->number());
+        self::assertSame(2, $params[1]->number());
+        self::assertSame(3, $params[2]->number());
+    }
+
+    public function test_parameters_negative_count_throws() : void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+
+        parameters(-1);
+    }
+
+    public function test_parameters_single() : void
+    {
+        $params = parameters(1);
+
+        self::assertCount(1, $params);
+        self::assertInstanceOf(Parameter::class, $params[0]);
+        self::assertSame(1, $params[0]->number());
+    }
+
+    public function test_parameters_with_start_at() : void
+    {
+        $params = parameters(3, startAt: 4);
+
+        self::assertCount(3, $params);
+        self::assertSame(4, $params[0]->number());
+        self::assertSame(5, $params[1]->number());
+        self::assertSame(6, $params[2]->number());
+    }
+
+    public function test_parameters_zero_count_throws() : void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+
+        parameters(0);
+    }
+
+    public function test_parameters_zero_start_throws() : void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+
+        parameters(3, startAt: 0);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/DSL/StringCoercionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/DSL/StringCoercionTest.php
new file mode 100644
index 0000000000..c48e7bd96e
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/DSL/StringCoercionTest.php
@@ -0,0 +1,190 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\DSL;
+
+use function Flow\PostgreSql\DSL\{agg_sum, asc, col, delete, eq, literal, select, star, table, update};
+use PHPUnit\Framework\TestCase;
+
+final class StringCoercionTest extends TestCase
+{
+    protected function setUp() : void
+    {
+        if (!\extension_loaded('pg_query')) {
+            self::markTestSkipped('pg_query extension is not loaded...');
+        }
+    }
+
+    public function test_agg_sum_with_string_in_select() : void
+    {
+        self::assertSame(
+            select(agg_sum(col('amount')))->from(table('orders'))->toSql(),
+            select(agg_sum('amount'))->from('orders')->toSql(),
+        );
+    }
+
+    public function test_asc_with_string_in_order_by() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users'))->orderBy(asc(col('created_at')))->toSql(),
+            select(star())->from('users')->orderBy(asc('created_at'))->toSql(),
+        );
+    }
+
+    public function test_between_with_string_in_where() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users'))->where(\Flow\PostgreSql\DSL\between(col('age'), literal(18), literal(65)))->toSql(),
+            select(star())->from('users')->where(\Flow\PostgreSql\DSL\between('age', literal(18), literal(65)))->toSql(),
+        );
+    }
+
+    public function test_cast_with_string_in_select() : void
+    {
+        self::assertSame(
+            select(\Flow\PostgreSql\DSL\cast(col('id'), \Flow\PostgreSql\QueryBuilder\Schema\ColumnType::integer()))->from(table('users'))->toSql(),
+            select(\Flow\PostgreSql\DSL\cast('id', \Flow\PostgreSql\QueryBuilder\Schema\ColumnType::integer()))->from('users')->toSql(),
+        );
+    }
+
+    public function test_coalesce_with_mixed_strings_in_select() : void
+    {
+        self::assertSame(
+            select(\Flow\PostgreSql\DSL\coalesce(col('name'), literal('unknown')))->from(table('users'))->toSql(),
+            select(\Flow\PostgreSql\DSL\coalesce('name', literal('unknown')))->from('users')->toSql(),
+        );
+    }
+
+    public function test_delete_using_with_string() : void
+    {
+        self::assertSame(
+            delete()->from('users')->using(table('orders'))->where(eq(col('users.id'), col('orders.user_id')))->toSql(),
+            delete()->from('users')->using('orders')->where(eq('users.id', 'orders.user_id'))->toSql(),
+        );
+    }
+
+    public function test_eq_with_strings_in_where() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users'))->where(eq(col('status'), col('other')))->toSql(),
+            select(star())->from('users')->where(eq('status', 'other'))->toSql(),
+        );
+    }
+
+    public function test_from_with_schema_dot_table() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users', 'public'))->toSql(),
+            select(star())->from('public.users')->toSql(),
+        );
+    }
+
+    public function test_from_with_string() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users'))->toSql(),
+            select(star())->from('users')->toSql(),
+        );
+    }
+
+    public function test_full_query_with_string_coercion() : void
+    {
+        self::assertSame(
+            select(col('id'), col('name'), agg_sum(col('amount'))->as('total'))
+                ->from(table('orders'))
+                ->join(table('users'), eq(col('orders.user_id'), col('users.id')))
+                ->where(eq(col('status'), literal('active')))
+                ->groupBy(col('id'), col('name'))
+                ->orderBy(asc(col('name')))
+                ->toSql(),
+            select('id', 'name', agg_sum('amount')->as('total'))
+                ->from('orders')
+                ->join('users', eq('orders.user_id', 'users.id'))
+                ->where(eq('status', literal('active')))
+                ->groupBy('id', 'name')
+                ->orderBy(asc('name'))
+                ->toSql(),
+        );
+    }
+
+    public function test_group_by_with_strings() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users'))->groupBy(col('category'), col('status'))->toSql(),
+            select(star())->from('users')->groupBy('category', 'status')->toSql(),
+        );
+    }
+
+    public function test_is_null_with_string_in_where() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users'))->where(\Flow\PostgreSql\DSL\is_null(col('email')))->toSql(),
+            select(star())->from('users')->where(\Flow\PostgreSql\DSL\is_null('email'))->toSql(),
+        );
+    }
+
+    public function test_join_with_string_table() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users'))->join(table('orders'), eq(col('users.id'), col('orders.user_id')))->toSql(),
+            select(star())->from('users')->join('orders', eq('users.id', 'orders.user_id'))->toSql(),
+        );
+    }
+
+    public function test_left_join_with_string_table() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users'))->leftJoin(table('orders'), eq(col('users.id'), col('orders.user_id')))->toSql(),
+            select(star())->from('users')->leftJoin('orders', eq('users.id', 'orders.user_id'))->toSql(),
+        );
+    }
+
+    public function test_like_with_string_in_where() : void
+    {
+        self::assertSame(
+            select(star())->from(table('users'))->where(\Flow\PostgreSql\DSL\like(col('name'), literal('%test%')))->toSql(),
+            select(star())->from('users')->where(\Flow\PostgreSql\DSL\like('name', literal('%test%')))->toSql(),
+        );
+    }
+
+    public function test_nullif_with_strings_in_select() : void
+    {
+        self::assertSame(
+            select(\Flow\PostgreSql\DSL\nullif(col('a'), col('b')))->from(table('users'))->toSql(),
+            select(\Flow\PostgreSql\DSL\nullif('a', 'b'))->from('users')->toSql(),
+        );
+    }
+
+    public function test_returning_with_strings_in_delete() : void
+    {
+        self::assertSame(
+            delete()->from('users')->where(eq(col('id'), literal(1)))->returning(col('id'), col('name'))->toSql(),
+            delete()->from('users')->where(eq('id', literal(1)))->returning(col('id'), col('name'))->toSql(),
+        );
+    }
+
+    public function test_select_mixed_strings_and_expressions() : void
+    {
+        self::assertSame(
+            select(col('id'), col('name')->as('n'))->from(table('users'))->toSql(),
+            select('id', col('name')->as('n'))->from(table('users'))->toSql(),
+        );
+    }
+
+    public function test_select_with_strings_produces_same_sql_as_col() : void
+    {
+        self::assertSame(
+            select(col('id'), col('name'))->from(table('users'))->toSql(),
+            select('id', 'name')->from(table('users'))->toSql(),
+        );
+    }
+
+    public function test_update_from_with_string() : void
+    {
+        self::assertSame(
+            update()->update('users')->set('name', literal('test'))->from(table('logs'))->where(eq(col('users.id'), col('logs.user_id')))->toSql(),
+            update()->update('users')->set('name', literal('test'))->from('logs')->where(eq('users.id', 'logs.user_id'))->toSql(),
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/NamedParameterNormalizerTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/NamedParameterNormalizerTest.php
index b1bb1ec1e3..f4e5d2dc29 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/NamedParameterNormalizerTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/NamedParameterNormalizerTest.php
@@ -63,7 +63,7 @@ public function test_normalize_parameters_with_underscores() : void
         );
     }
 
-    public function test_normalize_preserves_postgredata_type_casts() : void
+    public function test_normalize_preserves_postgrecolumn_type_casts() : void
     {
         $normalizer = new NamedParameterNormalizer();
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Parser/ColumnTypeParserTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Parser/ColumnTypeParserTest.php
new file mode 100644
index 0000000000..e9e0a8febf
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Parser/ColumnTypeParserTest.php
@@ -0,0 +1,266 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Parser;
+
+use function Flow\PostgreSql\DSL\column_type_from_string;
+
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use PHPUnit\Framework\TestCase;
+
+final class ColumnTypeParserTest extends TestCase
+{
+    protected function setUp() : void
+    {
+        if (!\extension_loaded('pg_query')) {
+            self::markTestSkipped('pg_query extension is not loaded.');
+        }
+    }
+
+    public function test_parse_bigint() : void
+    {
+        self::assertSame(
+            ColumnType::bigint()->toAst()->serializeToString(),
+            column_type_from_string('bigint')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_boolean() : void
+    {
+        self::assertSame(
+            ColumnType::boolean()->toAst()->serializeToString(),
+            column_type_from_string('boolean')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_bytea() : void
+    {
+        $ast = column_type_from_string('bytea')->toAst();
+
+        self::assertCount(1, $ast->getNames());
+        self::assertSame('bytea', $ast->getNames()[0]->getString()->getSval());
+    }
+
+    public function test_parse_char_with_length() : void
+    {
+        self::assertSame(
+            ColumnType::char(10)->toAst()->serializeToString(),
+            column_type_from_string('character(10)')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_cidr() : void
+    {
+        $ast = column_type_from_string('cidr')->toAst();
+
+        self::assertCount(1, $ast->getNames());
+        self::assertSame('cidr', $ast->getNames()[0]->getString()->getSval());
+    }
+
+    public function test_parse_custom_type() : void
+    {
+        $ast = column_type_from_string('my_custom_type')->toAst();
+
+        self::assertCount(1, $ast->getNames());
+        self::assertSame('my_custom_type', $ast->getNames()[0]->getString()->getSval());
+    }
+
+    public function test_parse_date() : void
+    {
+        $ast = column_type_from_string('date')->toAst();
+
+        self::assertCount(1, $ast->getNames());
+        self::assertSame('date', $ast->getNames()[0]->getString()->getSval());
+    }
+
+    public function test_parse_double_precision() : void
+    {
+        self::assertSame(
+            ColumnType::doublePrecision()->toAst()->serializeToString(),
+            column_type_from_string('double precision')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_empty_throws_exception() : void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+
+        column_type_from_string('');
+    }
+
+    public function test_parse_inet() : void
+    {
+        $ast = column_type_from_string('inet')->toAst();
+
+        self::assertCount(1, $ast->getNames());
+        self::assertSame('inet', $ast->getNames()[0]->getString()->getSval());
+    }
+
+    public function test_parse_integer() : void
+    {
+        self::assertSame(
+            ColumnType::integer()->toAst()->serializeToString(),
+            column_type_from_string('integer')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_integer_array() : void
+    {
+        $ast = column_type_from_string('integer[]')->toAst();
+        $names = $ast->getNames();
+
+        self::assertCount(2, $names);
+        self::assertSame('pg_catalog', $names[0]->getString()->getSval());
+        self::assertSame('int4', $names[1]->getString()->getSval());
+        self::assertCount(1, $ast->getArrayBounds());
+    }
+
+    public function test_parse_interval() : void
+    {
+        self::assertSame(
+            ColumnType::interval()->toAst()->serializeToString(),
+            column_type_from_string('interval')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_json() : void
+    {
+        self::assertSame(
+            ColumnType::json()->toAst()->serializeToString(),
+            column_type_from_string('json')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_jsonb() : void
+    {
+        $ast = column_type_from_string('jsonb')->toAst();
+
+        self::assertCount(1, $ast->getNames());
+        self::assertSame('jsonb', $ast->getNames()[0]->getString()->getSval());
+    }
+
+    public function test_parse_macaddr() : void
+    {
+        $ast = column_type_from_string('macaddr')->toAst();
+
+        self::assertCount(1, $ast->getNames());
+        self::assertSame('macaddr', $ast->getNames()[0]->getString()->getSval());
+    }
+
+    public function test_parse_numeric() : void
+    {
+        self::assertSame(
+            ColumnType::numeric()->toAst()->serializeToString(),
+            column_type_from_string('numeric')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_numeric_with_precision_and_scale() : void
+    {
+        self::assertSame(
+            ColumnType::numeric(10, 2)->toAst()->serializeToString(),
+            column_type_from_string('numeric(10,2)')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_real() : void
+    {
+        self::assertSame(
+            ColumnType::real()->toAst()->serializeToString(),
+            column_type_from_string('real')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_schema_qualified_custom_type() : void
+    {
+        $ast = column_type_from_string('my_schema.my_type')->toAst();
+        $names = $ast->getNames();
+
+        self::assertCount(2, $names);
+        self::assertSame('my_schema', $names[0]->getString()->getSval());
+        self::assertSame('my_type', $names[1]->getString()->getSval());
+    }
+
+    public function test_parse_smallint() : void
+    {
+        self::assertSame(
+            ColumnType::smallint()->toAst()->serializeToString(),
+            column_type_from_string('smallint')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_text() : void
+    {
+        $ast = column_type_from_string('text')->toAst();
+
+        self::assertCount(1, $ast->getNames());
+        self::assertSame('text', $ast->getNames()[0]->getString()->getSval());
+    }
+
+    public function test_parse_text_array() : void
+    {
+        $ast = column_type_from_string('text[]')->toAst();
+        $names = $ast->getNames();
+
+        self::assertCount(1, $names);
+        self::assertSame('text', $names[0]->getString()->getSval());
+        self::assertCount(1, $ast->getArrayBounds());
+    }
+
+    public function test_parse_time_with_precision() : void
+    {
+        self::assertSame(
+            ColumnType::time(3)->toAst()->serializeToString(),
+            column_type_from_string('time(3) without time zone')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_timestamp() : void
+    {
+        self::assertSame(
+            ColumnType::timestamp()->toAst()->serializeToString(),
+            column_type_from_string('timestamp without time zone')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_timestamp_with_precision() : void
+    {
+        self::assertSame(
+            ColumnType::timestamp(6)->toAst()->serializeToString(),
+            column_type_from_string('timestamp(6) without time zone')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_timestamptz() : void
+    {
+        self::assertSame(
+            ColumnType::timestamptz()->toAst()->serializeToString(),
+            column_type_from_string('timestamp with time zone')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_timestamptz_with_precision() : void
+    {
+        self::assertSame(
+            ColumnType::timestamptz(3)->toAst()->serializeToString(),
+            column_type_from_string('timestamp(3) with time zone')->toAst()->serializeToString()
+        );
+    }
+
+    public function test_parse_uuid() : void
+    {
+        $ast = column_type_from_string('uuid')->toAst();
+
+        self::assertCount(1, $ast->getNames());
+        self::assertSame('uuid', $ast->getNames()[0]->getString()->getSval());
+    }
+
+    public function test_parse_varchar_with_length() : void
+    {
+        self::assertSame(
+            ColumnType::varchar(255)->toAst()->serializeToString(),
+            column_type_from_string('character varying(255)')->toAst()->serializeToString()
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/AndConditionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/AndConditionTest.php
index a4395f7beb..e48fea99dd 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/AndConditionTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/AndConditionTest.php
@@ -4,9 +4,11 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Condition;
 
+use function Flow\PostgreSql\DSL\{col, eq, literal};
 use Flow\PostgreSql\Protobuf\AST\{BoolExpr, BoolExprType, Node};
-use Flow\PostgreSql\QueryBuilder\Condition\{AndCondition, NotCondition, OrCondition, RawCondition};
+use Flow\PostgreSql\QueryBuilder\Condition\{AndCondition, NotCondition, OrCondition};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+
 use PHPUnit\Framework\TestCase;
 
 final class AndConditionTest extends TestCase
@@ -20,9 +22,9 @@ protected function setUp() : void
 
     public function test_and_flattens_multiple_and_conditions() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
-        $cond3 = new RawCondition('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $and1 = new AndCondition($cond1, $cond2);
         $and2 = $and1->and($cond3);
@@ -39,8 +41,8 @@ public function test_and_flattens_multiple_and_conditions() : void
 
     public function test_and_method_returns_new_instance() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $original = new AndCondition($cond1);
         $modified = $original->and($cond2);
@@ -50,10 +52,10 @@ public function test_and_method_returns_new_instance() : void
 
     public function test_and_with_another_and_condition_flattens() : void
     {
-        $cond1 = new RawCondition('a = 1');
-        $cond2 = new RawCondition('b = 2');
-        $cond3 = new RawCondition('c = 3');
-        $cond4 = new RawCondition('d = 4');
+        $cond1 = eq(col('a'), literal(1));
+        $cond2 = eq(col('b'), literal(2));
+        $cond3 = eq(col('c'), literal(3));
+        $cond4 = eq(col('d'), literal(4));
 
         $and1 = new AndCondition($cond1, $cond2);
         $and2 = new AndCondition($cond3, $cond4);
@@ -70,8 +72,8 @@ public function test_and_with_another_and_condition_flattens() : void
 
     public function test_and_with_single_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $and = new AndCondition($cond1, $cond2);
         $ast = $and->toAst();
@@ -99,8 +101,8 @@ public function test_empty_and_condition() : void
 
     public function test_from_ast_reconstructs_and_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $original = new AndCondition($cond1, $cond2);
         $ast = $original->toAst();
@@ -142,8 +144,8 @@ public function test_from_ast_throws_on_wrong_bool_type() : void
 
     public function test_not_returns_not_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $and = new AndCondition($cond1, $cond2);
         $not = $and->not();
@@ -153,9 +155,9 @@ public function test_not_returns_not_condition() : void
 
     public function test_or_returns_or_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
-        $cond3 = new RawCondition('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $and = new AndCondition($cond1, $cond2);
         $or = $and->or($cond3);
@@ -165,8 +167,8 @@ public function test_or_returns_or_condition() : void
 
     public function test_to_ast_creates_bool_expr() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $and = new AndCondition($cond1, $cond2);
         $ast = $and->toAst();
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/ConditionBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/ConditionBuilderTest.php
index 03ea39542e..810b88200e 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/ConditionBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/ConditionBuilderTest.php
@@ -4,7 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Condition;
 
-use function Flow\PostgreSql\DSL\{conditions, raw_cond};
+use function Flow\PostgreSql\DSL\{col, conditions, eq, literal};
 use Flow\PostgreSql\Protobuf\AST\BoolExprType;
 use Flow\PostgreSql\QueryBuilder\Condition\{AndCondition, ConditionBuilder, OrCondition};
 use PHPUnit\Framework\TestCase;
@@ -20,7 +20,7 @@ protected function setUp() : void
 
     public function test_and_on_empty_builder_returns_new_builder_with_condition() : void
     {
-        $cond = raw_cond('x = 1');
+        $cond = eq(col('x'), literal(1));
 
         $builder = ConditionBuilder::create();
         $result = $builder->and($cond);
@@ -31,8 +31,8 @@ public function test_and_on_empty_builder_returns_new_builder_with_condition() :
 
     public function test_builder_is_immutable() : void
     {
-        $cond1 = raw_cond('x = 1');
-        $cond2 = raw_cond('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $original = ConditionBuilder::create();
         $modified = $original->and($cond1);
@@ -53,7 +53,7 @@ public function test_empty_builder_is_empty() : void
 
     public function test_empty_nested_builder_is_ignored_in_and() : void
     {
-        $cond = raw_cond('x = 1');
+        $cond = eq(col('x'), literal(1));
         $emptyBuilder = conditions();
 
         $builder = conditions()
@@ -66,7 +66,7 @@ public function test_empty_nested_builder_is_ignored_in_and() : void
 
     public function test_empty_nested_builder_is_ignored_in_or() : void
     {
-        $cond = raw_cond('x = 1');
+        $cond = eq(col('x'), literal(1));
         $emptyBuilder = conditions();
 
         $builder = conditions()
@@ -79,9 +79,9 @@ public function test_empty_nested_builder_is_ignored_in_or() : void
 
     public function test_mixing_and_then_or() : void
     {
-        $cond1 = raw_cond('x = 1');
-        $cond2 = raw_cond('y = 2');
-        $cond3 = raw_cond('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $builder = conditions()
             ->and($cond1)
@@ -94,9 +94,9 @@ public function test_mixing_and_then_or() : void
 
     public function test_mixing_or_then_and() : void
     {
-        $cond1 = raw_cond('x = 1');
-        $cond2 = raw_cond('y = 2');
-        $cond3 = raw_cond('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $builder = conditions()
             ->or($cond1)
@@ -109,9 +109,9 @@ public function test_mixing_or_then_and() : void
 
     public function test_multiple_and_conditions() : void
     {
-        $cond1 = raw_cond('x = 1');
-        $cond2 = raw_cond('y = 2');
-        $cond3 = raw_cond('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $builder = conditions()
             ->and($cond1)
@@ -134,9 +134,9 @@ public function test_multiple_and_conditions() : void
 
     public function test_multiple_or_conditions() : void
     {
-        $cond1 = raw_cond('x = 1');
-        $cond2 = raw_cond('y = 2');
-        $cond3 = raw_cond('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $builder = conditions()
             ->or($cond1)
@@ -159,9 +159,9 @@ public function test_multiple_or_conditions() : void
 
     public function test_nested_builder_via_and() : void
     {
-        $cond1 = raw_cond('x = 1');
-        $cond2 = raw_cond('y = 2');
-        $cond3 = raw_cond('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $nestedBuilder = conditions()
             ->or($cond2)
@@ -179,9 +179,9 @@ public function test_nested_builder_via_and() : void
 
     public function test_nested_builder_via_or() : void
     {
-        $cond1 = raw_cond('x = 1');
-        $cond2 = raw_cond('y = 2');
-        $cond3 = raw_cond('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $nestedBuilder = conditions()
             ->and($cond2)
@@ -199,7 +199,7 @@ public function test_nested_builder_via_or() : void
 
     public function test_or_on_empty_builder_returns_new_builder_with_condition() : void
     {
-        $cond = raw_cond('x = 1');
+        $cond = eq(col('x'), literal(1));
 
         $builder = conditions();
         $result = $builder->or($cond);
@@ -210,7 +210,7 @@ public function test_or_on_empty_builder_returns_new_builder_with_condition() :
 
     public function test_single_condition_via_and() : void
     {
-        $cond = raw_cond('x = 1');
+        $cond = eq(col('x'), literal(1));
         $builder = conditions()->and($cond);
 
         self::assertFalse($builder->isEmpty());
@@ -219,7 +219,7 @@ public function test_single_condition_via_and() : void
 
     public function test_single_condition_via_or() : void
     {
-        $cond = raw_cond('x = 1');
+        $cond = eq(col('x'), literal(1));
         $builder = conditions()->or($cond);
 
         self::assertFalse($builder->isEmpty());
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/NotConditionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/NotConditionTest.php
index 57f286dde0..21537bc228 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/NotConditionTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/NotConditionTest.php
@@ -4,9 +4,11 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Condition;
 
+use function Flow\PostgreSql\DSL\{col, eq, literal};
 use Flow\PostgreSql\Protobuf\AST\{BoolExpr, BoolExprType, Node};
-use Flow\PostgreSql\QueryBuilder\Condition\{AndCondition, NotCondition, OrCondition, RawCondition};
+use Flow\PostgreSql\QueryBuilder\Condition\{AndCondition, NotCondition, OrCondition};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+
 use PHPUnit\Framework\TestCase;
 
 final class NotConditionTest extends TestCase
@@ -20,8 +22,8 @@ protected function setUp() : void
 
     public function test_and_returns_and_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $not = new NotCondition($cond1);
         $and = $not->and($cond2);
@@ -31,7 +33,7 @@ public function test_and_returns_and_condition() : void
 
     public function test_double_negation() : void
     {
-        $cond = new RawCondition('x = 1');
+        $cond = eq(col('x'), literal(1));
         $not1 = new NotCondition($cond);
         $not2 = $not1->not();
 
@@ -54,7 +56,7 @@ public function test_double_negation() : void
 
     public function test_from_ast_reconstructs_not_condition() : void
     {
-        $cond = new RawCondition('x = 1');
+        $cond = eq(col('x'), literal(1));
         $original = new NotCondition($cond);
         $ast = $original->toAst();
 
@@ -91,8 +93,8 @@ public function test_from_ast_throws_on_multiple_args() : void
         $this->expectException(InvalidAstException::class);
         $this->expectExceptionMessage('NOT_EXPR must have exactly one argument, got 2');
 
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $boolExpr = new BoolExpr();
         $boolExpr->setBoolop(BoolExprType::NOT_EXPR);
@@ -129,7 +131,7 @@ public function test_from_ast_throws_on_wrong_bool_type() : void
 
     public function test_not_negates_condition() : void
     {
-        $cond = new RawCondition('x = 1');
+        $cond = eq(col('x'), literal(1));
         $not = new NotCondition($cond);
         $ast = $not->toAst();
 
@@ -143,7 +145,7 @@ public function test_not_negates_condition() : void
 
     public function test_not_returns_not_condition() : void
     {
-        $cond = new RawCondition('x = 1');
+        $cond = eq(col('x'), literal(1));
         $not = new NotCondition($cond);
         $notNot = $not->not();
 
@@ -152,8 +154,8 @@ public function test_not_returns_not_condition() : void
 
     public function test_or_returns_or_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $not = new NotCondition($cond1);
         $or = $not->or($cond2);
@@ -163,7 +165,7 @@ public function test_or_returns_or_condition() : void
 
     public function test_to_ast_creates_bool_expr() : void
     {
-        $cond = new RawCondition('x = 1');
+        $cond = eq(col('x'), literal(1));
         $not = new NotCondition($cond);
         $ast = $not->toAst();
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/OperatorConditionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/OperatorConditionTest.php
similarity index 72%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/OperatorConditionTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/OperatorConditionTest.php
index a49c6da350..a991ca1a53 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/OperatorConditionTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/OperatorConditionTest.php
@@ -2,13 +2,15 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Condition;
 
 use function Flow\PostgreSql\DSL\{
     array_contained_by,
     array_contains,
+    array_expr,
     array_overlap,
     col,
+    func,
     json_contained_by,
     json_contains,
     json_exists,
@@ -21,7 +23,6 @@
     literal,
     not_regex_imatch,
     not_regex_match,
-    raw_expr,
     regex_imatch,
     regex_match,
     select,
@@ -30,18 +31,20 @@
     text_search_match
 };
 
-final class OperatorConditionTest extends PGQueryTestCase
+use PHPUnit\Framework\TestCase;
+
+final class OperatorConditionTest extends TestCase
 {
     public function test_array_contained_by() : void
     {
         $query = select()
             ->select(star())
             ->from(table('products'))
-            ->where(array_contained_by(col('tags'), raw_expr("ARRAY['sale', 'featured', 'new']")));
+            ->where(array_contained_by(col('tags'), array_expr([literal('sale'), literal('featured'), literal('new')])));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM products WHERE tags <@ ARRAY['sale', 'featured', 'new']"
+        self::assertSame(
+            "SELECT * FROM products WHERE tags <@ ARRAY['sale', 'featured', 'new']",
+            $query->toSql()
         );
     }
 
@@ -50,11 +53,11 @@ public function test_array_contains() : void
         $query = select()
             ->select(star())
             ->from(table('products'))
-            ->where(array_contains(col('tags'), raw_expr("ARRAY['sale']")));
+            ->where(array_contains(col('tags'), array_expr([literal('sale')])));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM products WHERE tags @> ARRAY['sale']"
+        self::assertSame(
+            "SELECT * FROM products WHERE tags @> ARRAY['sale']",
+            $query->toSql()
         );
     }
 
@@ -63,11 +66,11 @@ public function test_array_overlap() : void
         $query = select()
             ->select(star())
             ->from(table('products'))
-            ->where(array_overlap(col('tags'), raw_expr("ARRAY['sale', 'featured']")));
+            ->where(array_overlap(col('tags'), array_expr([literal('sale'), literal('featured')])));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM products WHERE tags && ARRAY['sale', 'featured']"
+        self::assertSame(
+            "SELECT * FROM products WHERE tags && ARRAY['sale', 'featured']",
+            $query->toSql()
         );
     }
 
@@ -78,9 +81,9 @@ public function test_json_contained_by() : void
             ->from(table('products'))
             ->where(json_contained_by(col('metadata'), literal('{"category": "electronics", "price": 100}')));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM products WHERE metadata <@ \'{"category": "electronics", "price": 100}\''
+        self::assertSame(
+            'SELECT * FROM products WHERE metadata <@ \'{"category": "electronics", "price": 100}\'',
+            $query->toSql()
         );
     }
 
@@ -91,9 +94,9 @@ public function test_json_contains() : void
             ->from(table('products'))
             ->where(json_contains(col('metadata'), literal('{"category": "electronics"}')));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            'SELECT * FROM products WHERE metadata @> \'{"category": "electronics"}\''
+        self::assertSame(
+            'SELECT * FROM products WHERE metadata @> \'{"category": "electronics"}\'',
+            $query->toSql()
         );
     }
 
@@ -104,9 +107,9 @@ public function test_json_exists() : void
             ->from(table('products'))
             ->where(json_exists(col('metadata'), literal('category')));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM products WHERE metadata ? 'category'"
+        self::assertSame(
+            "SELECT * FROM products WHERE metadata ? 'category'",
+            $query->toSql()
         );
     }
 
@@ -115,11 +118,11 @@ public function test_json_exists_all() : void
         $query = select()
             ->select(star())
             ->from(table('products'))
-            ->where(json_exists_all(col('metadata'), raw_expr("array['category', 'name']")));
+            ->where(json_exists_all(col('metadata'), array_expr([literal('category'), literal('name')])));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM products WHERE metadata ?& ARRAY['category', 'name']"
+        self::assertSame(
+            "SELECT * FROM products WHERE metadata ?& ARRAY['category', 'name']",
+            $query->toSql()
         );
     }
 
@@ -128,11 +131,11 @@ public function test_json_exists_any() : void
         $query = select()
             ->select(star())
             ->from(table('products'))
-            ->where(json_exists_any(col('metadata'), raw_expr("array['category', 'name']")));
+            ->where(json_exists_any(col('metadata'), array_expr([literal('category'), literal('name')])));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM products WHERE metadata ?| ARRAY['category', 'name']"
+        self::assertSame(
+            "SELECT * FROM products WHERE metadata ?| ARRAY['category', 'name']",
+            $query->toSql()
         );
     }
 
@@ -142,9 +145,9 @@ public function test_json_get() : void
             ->select(json_get(col('metadata'), literal('category'))->as('category'))
             ->from(table('products'));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT metadata -> 'category' AS category FROM products"
+        self::assertSame(
+            "SELECT metadata -> 'category' AS category FROM products",
+            $query->toSql()
         );
     }
 
@@ -154,9 +157,9 @@ public function test_json_get_text() : void
             ->select(json_get_text(col('metadata'), literal('name'))->as('product_name'))
             ->from(table('products'));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT metadata ->> 'name' AS product_name FROM products"
+        self::assertSame(
+            "SELECT metadata ->> 'name' AS product_name FROM products",
+            $query->toSql()
         );
     }
 
@@ -166,9 +169,9 @@ public function test_json_path() : void
             ->select(json_path(col('metadata'), literal('{category,name}'))->as('nested'))
             ->from(table('products'));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT metadata #> '{category,name}' AS nested FROM products"
+        self::assertSame(
+            "SELECT metadata #> '{category,name}' AS nested FROM products",
+            $query->toSql()
         );
     }
 
@@ -178,9 +181,9 @@ public function test_json_path_text() : void
             ->select(json_path_text(col('metadata'), literal('{category,name}'))->as('nested_text'))
             ->from(table('products'));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT metadata #>> '{category,name}' AS nested_text FROM products"
+        self::assertSame(
+            "SELECT metadata #>> '{category,name}' AS nested_text FROM products",
+            $query->toSql()
         );
     }
 
@@ -191,9 +194,9 @@ public function test_not_regex_imatch() : void
             ->from(table('users'))
             ->where(not_regex_imatch(col('email'), literal('.*@spam\\.com')));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE email !~* E'.*@spam\\\\.com'"
+        self::assertSame(
+            "SELECT * FROM users WHERE email !~* E'.*@spam\\\\.com'",
+            $query->toSql()
         );
     }
 
@@ -204,9 +207,9 @@ public function test_not_regex_match() : void
             ->from(table('users'))
             ->where(not_regex_match(col('email'), literal('.*@spam\\.com')));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE email !~ E'.*@spam\\\\.com'"
+        self::assertSame(
+            "SELECT * FROM users WHERE email !~ E'.*@spam\\\\.com'",
+            $query->toSql()
         );
     }
 
@@ -217,9 +220,9 @@ public function test_regex_imatch() : void
             ->from(table('users'))
             ->where(regex_imatch(col('email'), literal('.*@gmail\\.com')));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE email ~* E'.*@gmail\\\\.com'"
+        self::assertSame(
+            "SELECT * FROM users WHERE email ~* E'.*@gmail\\\\.com'",
+            $query->toSql()
         );
     }
 
@@ -230,9 +233,9 @@ public function test_regex_match() : void
             ->from(table('users'))
             ->where(regex_match(col('email'), literal('.*@gmail\\.com')));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM users WHERE email ~ E'.*@gmail\\\\.com'"
+        self::assertSame(
+            "SELECT * FROM users WHERE email ~ E'.*@gmail\\\\.com'",
+            $query->toSql()
         );
     }
 
@@ -241,11 +244,11 @@ public function test_text_search_match() : void
         $query = select()
             ->select(star())
             ->from(table('documents'))
-            ->where(text_search_match(col('content'), raw_expr("to_tsquery('english', 'hello & world')")));
+            ->where(text_search_match(col('content'), func('to_tsquery', [literal('english'), literal('hello & world')])));
 
-        $this->assertSelectQueryRoundTrip(
-            $query,
-            "SELECT * FROM documents WHERE content @@ to_tsquery('english', 'hello & world')"
+        self::assertSame(
+            "SELECT * FROM documents WHERE content @@ to_tsquery('english', 'hello & world')",
+            $query->toSql()
         );
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/OrConditionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/OrConditionTest.php
index daec5c418e..27dd201825 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/OrConditionTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/OrConditionTest.php
@@ -4,9 +4,11 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Condition;
 
+use function Flow\PostgreSql\DSL\{col, eq, literal};
 use Flow\PostgreSql\Protobuf\AST\{BoolExpr, BoolExprType, Node};
-use Flow\PostgreSql\QueryBuilder\Condition\{AndCondition, NotCondition, OrCondition, RawCondition};
+use Flow\PostgreSql\QueryBuilder\Condition\{AndCondition, NotCondition, OrCondition};
 use Flow\PostgreSql\QueryBuilder\Exception\InvalidAstException;
+
 use PHPUnit\Framework\TestCase;
 
 final class OrConditionTest extends TestCase
@@ -20,9 +22,9 @@ protected function setUp() : void
 
     public function test_and_returns_and_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
-        $cond3 = new RawCondition('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $or = new OrCondition($cond1, $cond2);
         $and = $or->and($cond3);
@@ -45,8 +47,8 @@ public function test_empty_or_condition() : void
 
     public function test_from_ast_reconstructs_or_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $original = new OrCondition($cond1, $cond2);
         $ast = $original->toAst();
@@ -88,8 +90,8 @@ public function test_from_ast_throws_on_wrong_bool_type() : void
 
     public function test_not_returns_not_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $or = new OrCondition($cond1, $cond2);
         $not = $or->not();
@@ -99,9 +101,9 @@ public function test_not_returns_not_condition() : void
 
     public function test_or_flattens_multiple_or_conditions() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
-        $cond3 = new RawCondition('z = 3');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
+        $cond3 = eq(col('z'), literal(3));
 
         $or1 = new OrCondition($cond1, $cond2);
         $or2 = $or1->or($cond3);
@@ -118,8 +120,8 @@ public function test_or_flattens_multiple_or_conditions() : void
 
     public function test_or_method_returns_new_instance() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $original = new OrCondition($cond1);
         $modified = $original->or($cond2);
@@ -129,10 +131,10 @@ public function test_or_method_returns_new_instance() : void
 
     public function test_or_with_another_or_condition_flattens() : void
     {
-        $cond1 = new RawCondition('a = 1');
-        $cond2 = new RawCondition('b = 2');
-        $cond3 = new RawCondition('c = 3');
-        $cond4 = new RawCondition('d = 4');
+        $cond1 = eq(col('a'), literal(1));
+        $cond2 = eq(col('b'), literal(2));
+        $cond3 = eq(col('c'), literal(3));
+        $cond4 = eq(col('d'), literal(4));
 
         $or1 = new OrCondition($cond1, $cond2);
         $or2 = new OrCondition($cond3, $cond4);
@@ -149,8 +151,8 @@ public function test_or_with_another_or_condition_flattens() : void
 
     public function test_or_with_single_condition() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $or = new OrCondition($cond1, $cond2);
         $ast = $or->toAst();
@@ -165,8 +167,8 @@ public function test_or_with_single_condition() : void
 
     public function test_to_ast_creates_bool_expr() : void
     {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
+        $cond1 = eq(col('x'), literal(1));
+        $cond2 = eq(col('y'), literal(2));
 
         $or = new OrCondition($cond1, $cond2);
         $ast = $or->toAst();
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/RawConditionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/RawConditionTest.php
deleted file mode 100644
index c163c8ffa2..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Condition/RawConditionTest.php
+++ /dev/null
@@ -1,138 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Condition;
-
-use Flow\PostgreSql\Parser;
-use Flow\PostgreSql\Protobuf\AST\Node;
-use Flow\PostgreSql\QueryBuilder\Condition\{AndCondition, NotCondition, OrCondition, RawCondition};
-use Flow\PostgreSql\QueryBuilder\Exception\UnsupportedNodeException;
-use PHPUnit\Framework\TestCase;
-
-final class RawConditionTest extends TestCase
-{
-    protected function setUp() : void
-    {
-        if (!\extension_loaded('pg_query')) {
-            self::markTestSkipped('pg_query extension is not loaded. For local development use `nix-shell --arg with-pg-query-ext true` to enable it in the shell.');
-        }
-    }
-
-    public function test_and_returns_and_condition() : void
-    {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
-
-        $and = $cond1->and($cond2);
-
-        self::assertInstanceOf(AndCondition::class, $and);
-    }
-
-    public function test_from_ast_throws_unsupported_exception() : void
-    {
-        $this->expectException(UnsupportedNodeException::class);
-        $this->expectExceptionMessage('Cannot reconstruct Flow\PostgreSql\QueryBuilder\Condition\RawCondition from AST');
-
-        $node = new Node();
-        RawCondition::fromAst($node);
-    }
-
-    public function test_not_returns_not_condition() : void
-    {
-        $cond = new RawCondition('x = 1');
-        $not = $cond->not();
-
-        self::assertInstanceOf(NotCondition::class, $not);
-    }
-
-    public function test_or_returns_or_condition() : void
-    {
-        $cond1 = new RawCondition('x = 1');
-        $cond2 = new RawCondition('y = 2');
-
-        $or = $cond1->or($cond2);
-
-        self::assertInstanceOf(OrCondition::class, $or);
-    }
-
-    public function test_to_ast_with_comparison_condition() : void
-    {
-        $raw = new RawCondition('id = 42');
-        $ast = $raw->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-
-        $parser = new Parser();
-        $parsed = $parser->parse('SELECT 1 WHERE id = 42');
-        $stmts = $parsed->raw()->getStmts();
-        $stmt = $stmts[0]->getStmt();
-        self::assertNotNull($stmt);
-        $selectStmt = $stmt->getSelectStmt();
-        self::assertNotNull($selectStmt);
-        $expectedWhereClause = $selectStmt->getWhereClause();
-        self::assertNotNull($expectedWhereClause);
-
-        self::assertTrue($ast->hasAExpr());
-        self::assertTrue($expectedWhereClause->hasAExpr());
-    }
-
-    public function test_to_ast_with_complex_condition() : void
-    {
-        $raw = new RawCondition('age > 18 AND status = \'active\'');
-        $ast = $raw->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasBoolExpr());
-    }
-
-    public function test_to_ast_with_in_condition() : void
-    {
-        $raw = new RawCondition('category IN (\'A\', \'B\', \'C\')');
-        $ast = $raw->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-    }
-
-    public function test_to_ast_with_like_condition() : void
-    {
-        $raw = new RawCondition('name LIKE \'%john%\'');
-        $ast = $raw->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-    }
-
-    public function test_to_ast_with_nested_conditions() : void
-    {
-        $raw = new RawCondition('(x = 1 OR y = 2) AND z = 3');
-        $ast = $raw->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasBoolExpr());
-    }
-
-    public function test_to_ast_with_not_condition() : void
-    {
-        $raw = new RawCondition('NOT active');
-        $ast = $raw->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-    }
-
-    public function test_to_ast_with_null_check() : void
-    {
-        $raw = new RawCondition('email IS NOT NULL');
-        $ast = $raw->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasNullTest());
-    }
-
-    public function test_to_ast_with_simple_boolean() : void
-    {
-        $raw = new RawCondition('active');
-        $ast = $raw->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/CopyBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Copy/CopyBuilderTest.php
similarity index 51%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/CopyBuilderTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Copy/CopyBuilderTest.php
index 4b27d1e030..5aa8c41849 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/CopyBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Copy/CopyBuilderTest.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Copy;
 
 use function Flow\PostgreSql\DSL\{
     col,
@@ -10,12 +10,11 @@
     select
 };
 
-use Flow\PostgreSql\{ParsedQuery, Parser};
-use Flow\PostgreSql\Protobuf\AST\{CopyStmt, Node, RawStmt};
-use Flow\PostgreSql\QueryBuilder\Copy\{CopyFormat, CopyFromFinalStep, CopyOnError, CopyToFinalStep};
+use Flow\PostgreSql\QueryBuilder\Copy\{CopyFormat, CopyOnError};
 use Flow\PostgreSql\QueryBuilder\Table\Table;
+use PHPUnit\Framework\TestCase;
 
-final class CopyBuilderTest extends PGQueryTestCase
+final class CopyBuilderTest extends TestCase
 {
     public function test_copy_from_basic() : void
     {
@@ -23,10 +22,7 @@ public function test_copy_from_basic() : void
             ->from('users')
             ->file('/tmp/users.csv');
 
-        $this->assertCopyFromQueryEquals(
-            $query,
-            "COPY users FROM '/tmp/users.csv'"
-        );
+        self::assertSame("COPY users FROM '/tmp/users.csv'", $query->toSql());
     }
 
     public function test_copy_from_csv_with_header() : void
@@ -37,10 +33,7 @@ public function test_copy_from_csv_with_header() : void
             ->format(CopyFormat::CSV)
             ->withHeader();
 
-        $this->assertCopyFromQueryEquals(
-            $query,
-            "COPY users FROM '/tmp/users.csv' WITH (FORMAT CSV, HEADER true)"
-        );
+        self::assertSame("COPY users FROM '/tmp/users.csv' WITH (FORMAT CSV, HEADER true)", $query->toSql());
     }
 
     public function test_copy_from_program() : void
@@ -49,10 +42,7 @@ public function test_copy_from_program() : void
             ->from('logs')
             ->program('gunzip -c /var/log/app.log.gz');
 
-        $this->assertCopyFromQueryEquals(
-            $query,
-            "COPY logs FROM PROGRAM 'gunzip -c /var/log/app.log.gz'"
-        );
+        self::assertSame("COPY logs FROM PROGRAM 'gunzip -c /var/log/app.log.gz'", $query->toSql());
     }
 
     public function test_copy_from_stdin() : void
@@ -62,10 +52,7 @@ public function test_copy_from_stdin() : void
             ->stdin()
             ->format(CopyFormat::CSV);
 
-        $this->assertCopyFromQueryEquals(
-            $query,
-            'COPY users FROM STDIN CSV'
-        );
+        self::assertSame('COPY users FROM STDIN CSV', $query->toSql());
     }
 
     public function test_copy_from_with_all_csv_options() : void
@@ -81,10 +68,7 @@ public function test_copy_from_with_all_csv_options() : void
             ->escape('\\')
             ->encoding('UTF8');
 
-        $this->assertCopyFromQueryEquals(
-            $query,
-            "COPY data FROM '/tmp/data.csv' WITH (FORMAT CSV, DELIMITER ';', NULL 'NULL', HEADER true, QUOTE '''', ESCAPE E'\\\\', ENCODING 'UTF8')"
-        );
+        self::assertSame("COPY data FROM '/tmp/data.csv' WITH (FORMAT CSV, DELIMITER ';', NULL 'NULL', HEADER true, QUOTE '''', ESCAPE E'\\\\', ENCODING 'UTF8')", $query->toSql());
     }
 
     public function test_copy_from_with_columns() : void
@@ -94,10 +78,7 @@ public function test_copy_from_with_columns() : void
             ->columns('id', 'name', 'email')
             ->file('/tmp/users.csv');
 
-        $this->assertCopyFromQueryEquals(
-            $query,
-            "COPY users(id, name, email) FROM '/tmp/users.csv'"
-        );
+        self::assertSame("COPY users(id, name, email) FROM '/tmp/users.csv'", $query->toSql());
     }
 
     public function test_copy_from_with_force_not_null() : void
@@ -108,10 +89,7 @@ public function test_copy_from_with_force_not_null() : void
             ->format(CopyFormat::CSV)
             ->forceNotNull('name', 'email');
 
-        $this->assertCopyFromQueryEquals(
-            $query,
-            "COPY users FROM '/tmp/users.csv' WITH (FORMAT CSV, FORCE_NOT_NULL (name, email))"
-        );
+        self::assertSame("COPY users FROM '/tmp/users.csv' WITH (FORMAT CSV, FORCE_NOT_NULL (name, email))", $query->toSql());
     }
 
     public function test_copy_from_with_on_error_ignore() : void
@@ -121,10 +99,7 @@ public function test_copy_from_with_on_error_ignore() : void
             ->file('/tmp/events.csv')
             ->onError(CopyOnError::IGNORE);
 
-        $this->assertCopyFromQueryEquals(
-            $query,
-            "COPY events FROM '/tmp/events.csv' WITH (on_error ignore)"
-        );
+        self::assertSame("COPY events FROM '/tmp/events.csv' WITH (on_error ignore)", $query->toSql());
     }
 
     public function test_copy_to_basic() : void
@@ -133,10 +108,7 @@ public function test_copy_to_basic() : void
             ->to('users')
             ->file('/tmp/users.csv');
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            "COPY users TO '/tmp/users.csv'"
-        );
+        self::assertSame("COPY users TO '/tmp/users.csv'", $query->toSql());
     }
 
     public function test_copy_to_binary_format() : void
@@ -146,10 +118,7 @@ public function test_copy_to_binary_format() : void
             ->file('/tmp/data.bin')
             ->format(CopyFormat::BINARY);
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            "COPY data TO '/tmp/data.bin' WITH (FORMAT BINARY)"
-        );
+        self::assertSame("COPY data TO '/tmp/data.bin' WITH (FORMAT BINARY)", $query->toSql());
     }
 
     public function test_copy_to_csv_with_header() : void
@@ -160,10 +129,7 @@ public function test_copy_to_csv_with_header() : void
             ->format(CopyFormat::CSV)
             ->withHeader();
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            "COPY users TO '/tmp/users.csv' WITH (FORMAT CSV, HEADER true)"
-        );
+        self::assertSame("COPY users TO '/tmp/users.csv' WITH (FORMAT CSV, HEADER true)", $query->toSql());
     }
 
     public function test_copy_to_program() : void
@@ -172,10 +138,7 @@ public function test_copy_to_program() : void
             ->to('logs')
             ->program('gzip > /tmp/logs.csv.gz');
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            "COPY logs TO PROGRAM 'gzip > /tmp/logs.csv.gz'"
-        );
+        self::assertSame("COPY logs TO PROGRAM 'gzip > /tmp/logs.csv.gz'", $query->toSql());
     }
 
     public function test_copy_to_stdout() : void
@@ -185,10 +148,7 @@ public function test_copy_to_stdout() : void
             ->stdout()
             ->format(CopyFormat::CSV);
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            'COPY users TO STDOUT CSV'
-        );
+        self::assertSame('COPY users TO STDOUT CSV', $query->toSql());
     }
 
     public function test_copy_to_with_columns() : void
@@ -198,10 +158,7 @@ public function test_copy_to_with_columns() : void
             ->columns('id', 'name', 'email')
             ->file('/tmp/users.csv');
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            "COPY users(id, name, email) TO '/tmp/users.csv'"
-        );
+        self::assertSame("COPY users(id, name, email) TO '/tmp/users.csv'", $query->toSql());
     }
 
     public function test_copy_to_with_force_quote_all() : void
@@ -212,10 +169,7 @@ public function test_copy_to_with_force_quote_all() : void
             ->format(CopyFormat::CSV)
             ->forceQuoteAll();
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            "COPY products TO '/tmp/products.csv' WITH (FORMAT CSV, FORCE_QUOTE *)"
-        );
+        self::assertSame("COPY products TO '/tmp/products.csv' WITH (FORMAT CSV, FORCE_QUOTE *)", $query->toSql());
     }
 
     public function test_copy_to_with_force_quote_columns() : void
@@ -226,10 +180,7 @@ public function test_copy_to_with_force_quote_columns() : void
             ->format(CopyFormat::CSV)
             ->forceQuote('name', 'description');
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            "COPY products TO '/tmp/products.csv' CSV FORCE QUOTE name, description"
-        );
+        self::assertSame("COPY products TO '/tmp/products.csv' CSV FORCE QUOTE name, description", $query->toSql());
     }
 
     public function test_copy_to_with_query() : void
@@ -243,10 +194,7 @@ public function test_copy_to_with_query() : void
             ->file('/tmp/active_users.csv')
             ->format(CopyFormat::CSV);
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            "COPY (SELECT id, name FROM users) TO '/tmp/active_users.csv' CSV"
-        );
+        self::assertSame("COPY (SELECT id, name FROM users) TO '/tmp/active_users.csv' CSV", $query->toSql());
     }
 
     public function test_copy_to_with_schema() : void
@@ -255,37 +203,6 @@ public function test_copy_to_with_schema() : void
             ->to('analytics.events')
             ->file('/tmp/events.csv');
 
-        $this->assertCopyToQueryEquals(
-            $query,
-            "COPY analytics.events TO '/tmp/events.csv'"
-        );
-    }
-
-    protected function assertCopyFromQueryEquals(CopyFromFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCopyStmt($builder->toAst());
-
-        self::assertSame($expectedSql, $sql);
-    }
-
-    protected function assertCopyToQueryEquals(CopyToFinalStep $builder, string $expectedSql) : void
-    {
-        $sql = $this->deparseCopyStmt($builder->toAst());
-
-        self::assertSame($expectedSql, $sql);
-    }
-
-    protected function deparseCopyStmt(CopyStmt $copyStmt) : string
-    {
-        $node = new Node();
-        $node->setCopyStmt($copyStmt);
-
-        $parser = new Parser();
-        $rawStmt = new RawStmt(['stmt' => $node]);
-        $parsed = $parser->parse('SELECT 1');
-        $parseResult = $parsed->raw();
-        $parseResult->setStmts([$rawStmt]);
-
-        return (new ParsedQuery($parseResult))->deparse();
+        self::assertSame("COPY analytics.events TO '/tmp/events.csv'", $query->toSql());
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Delete/DeleteBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Delete/DeleteBuilderTest.php
index c438b584d5..6e2d4422a4 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Delete/DeleteBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Delete/DeleteBuilderTest.php
@@ -4,6 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Delete;
 
+use function Flow\PostgreSql\DSL\{any_, col, delete, eq, literal, param, select, table};
 use Flow\PostgreSql\{ParsedQuery, Parser};
 use Flow\PostgreSql\Protobuf\AST\{DeleteStmt, Node, RawStmt, SelectStmt};
 use Flow\PostgreSql\QueryBuilder\Clause\{CTE, WithClause};
@@ -240,6 +241,15 @@ public function test_delete_with_multiple_using_tables_deparsed_output() : void
         self::assertSame('DELETE FROM order_items oi USING orders o, customers c WHERE oi.order_id = o.id AND o.customer_id = c.id', $deparsed);
     }
 
+    public function test_delete_with_parameters() : void
+    {
+        $query = delete()
+            ->from('users')
+            ->where(eq(col('id'), param(1)));
+
+        self::assertSame('DELETE FROM users WHERE id = $1', $query->toSql());
+    }
+
     public function test_delete_with_returning() : void
     {
         $query = DeleteBuilder::create()
@@ -269,6 +279,16 @@ public function test_delete_with_returning() : void
         self::assertTrue($secondVal->hasColumnRef());
     }
 
+    public function test_delete_with_returning_all() : void
+    {
+        $query = delete()
+            ->from('users')
+            ->where(eq(col('id'), literal(1)))
+            ->returningAll();
+
+        self::assertSame('DELETE FROM users WHERE id = 1 RETURNING *', $query->toSql());
+    }
+
     public function test_delete_with_returning_deparsed_output() : void
     {
         if (!\function_exists('pg_query_deparse')) {
@@ -329,6 +349,19 @@ public function test_delete_with_schema_round_trip() : void
         self::assertSame($originalRelation->getSchemaname(), $restoredRelation->getSchemaname());
     }
 
+    public function test_delete_with_subquery_in_where() : void
+    {
+        $subquery = select()
+            ->select(col('user_id'))
+            ->from(table('inactive_users'));
+
+        $query = delete()
+            ->from('users')
+            ->where(any_(col('id'), ComparisonOperator::EQ, $subquery));
+
+        self::assertSame('DELETE FROM users WHERE id = ANY (SELECT user_id FROM inactive_users)', $query->toSql());
+    }
+
     public function test_delete_with_using() : void
     {
         $query = DeleteBuilder::create()
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Expression/RawExpressionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Expression/RawExpressionTest.php
deleted file mode 100644
index e752c8e9f9..0000000000
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Expression/RawExpressionTest.php
+++ /dev/null
@@ -1,133 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Expression;
-
-use Flow\PostgreSql\Exception\ParserException;
-use Flow\PostgreSql\Protobuf\AST\Node;
-use Flow\PostgreSql\QueryBuilder\Exception\UnsupportedNodeException;
-use Flow\PostgreSql\QueryBuilder\Expression\{AliasedExpression, RawExpression};
-use PHPUnit\Framework\TestCase;
-
-final class RawExpressionTest extends TestCase
-{
-    protected function setUp() : void
-    {
-        if (!\extension_loaded('pg_query')) {
-            self::markTestSkipped('pg_query extension is not loaded. For local development use `nix-shell --arg with-pg-query-ext true` to enable it in the shell.');
-        }
-    }
-
-    public function test_as_returns_aliased_expression() : void
-    {
-        $expr = new RawExpression('1 + 1');
-
-        $aliased = $expr->as('result');
-
-        self::assertInstanceOf(AliasedExpression::class, $aliased);
-    }
-
-    public function test_constructor_throws_on_empty_sql() : void
-    {
-        $this->expectException(\InvalidArgumentException::class);
-        $this->expectExceptionMessage('RawExpression SQL cannot be empty');
-
-        new RawExpression('');
-    }
-
-    public function test_from_ast_throws_unsupported_exception() : void
-    {
-        $this->expectException(UnsupportedNodeException::class);
-        $this->expectExceptionMessage('Cannot reconstruct RawExpression - cannot convert AST back to raw SQL string from AST');
-
-        $node = new Node();
-        RawExpression::fromAst($node);
-    }
-
-    public function test_sql_getter() : void
-    {
-        $sql = '1 + 1';
-        $expr = new RawExpression($sql);
-
-        self::assertSame($sql, $expr->sql());
-    }
-
-    public function test_to_ast_with_arithmetic_expression() : void
-    {
-        $expr = new RawExpression('1 + 2');
-
-        $ast = $expr->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasAExpr());
-    }
-
-    public function test_to_ast_with_column_reference() : void
-    {
-        $expr = new RawExpression('users.name');
-
-        $ast = $expr->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasColumnRef());
-    }
-
-    public function test_to_ast_with_complex_expression() : void
-    {
-        $expr = new RawExpression('CASE WHEN x > 0 THEN 1 ELSE 0 END');
-
-        $ast = $expr->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasCaseExpr());
-    }
-
-    public function test_to_ast_with_function_call() : void
-    {
-        $expr = new RawExpression('NOW()');
-
-        $ast = $expr->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasFuncCall());
-    }
-
-    public function test_to_ast_with_invalid_sql_throws_parser_exception() : void
-    {
-        $this->expectException(ParserException::class);
-
-        $expr = new RawExpression('INVALID SQL @#$%');
-        $expr->toAst();
-    }
-
-    public function test_to_ast_with_literal_value() : void
-    {
-        $expr = new RawExpression('42');
-
-        $ast = $expr->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasAConst());
-    }
-
-    public function test_to_ast_with_nested_subquery() : void
-    {
-        $expr = new RawExpression('(SELECT id FROM users WHERE active = true)');
-
-        $ast = $expr->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasSubLink());
-    }
-
-    public function test_to_ast_with_string_literal() : void
-    {
-        $expr = new RawExpression("'hello world'");
-
-        $ast = $expr->toAst();
-
-        self::assertInstanceOf(Node::class, $ast);
-        self::assertTrue($ast->hasAConst());
-    }
-}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Expression/TypeCastTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Expression/TypeCastTest.php
index 26d18b216a..ac8e352a4d 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Expression/TypeCastTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Expression/TypeCastTest.php
@@ -6,15 +6,15 @@
 
 use Flow\PostgreSql\Protobuf\AST\{Node, PBString, TypeCast as AstTypeCast, TypeName};
 use Flow\PostgreSql\QueryBuilder\Expression\{Column, Literal, TypeCast};
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 use PHPUnit\Framework\TestCase;
 
 final class TypeCastTest extends TestCase
 {
     public function test_complex_expression_cast() : void
     {
-        $innerExpr = new TypeCast(Literal::string('42'), DataType::integer());
-        $outerCast = new TypeCast($innerExpr, DataType::varchar(255));
+        $innerExpr = new TypeCast(Literal::string('42'), ColumnType::integer());
+        $outerCast = new TypeCast($innerExpr, ColumnType::varchar(255));
 
         $node = $outerCast->toAst();
         $restored = TypeCast::fromAst($node);
@@ -25,7 +25,7 @@ public function test_complex_expression_cast() : void
     public function test_converts_to_ast() : void
     {
         $expr = Literal::string('123');
-        $cast = new TypeCast($expr, DataType::integer());
+        $cast = new TypeCast($expr, ColumnType::integer());
 
         $node = $cast->toAst();
 
@@ -49,7 +49,7 @@ public function test_converts_to_ast() : void
     public function test_converts_type_cast_with_schema_to_ast() : void
     {
         $expr = Column::name('id');
-        $cast = new TypeCast($expr, DataType::text());
+        $cast = new TypeCast($expr, ColumnType::text());
 
         $node = $cast->toAst();
         $typeCast = $node->getTypeCast();
@@ -70,7 +70,7 @@ public function test_converts_type_cast_with_schema_to_ast() : void
     public function test_creates_aliased_expression() : void
     {
         $expr = Literal::int(42);
-        $cast = new TypeCast($expr, DataType::varchar(100));
+        $cast = new TypeCast($expr, ColumnType::varchar(100));
         $aliased = $cast->as('casted_value');
 
         self::assertSame('casted_value', $aliased->getAlias());
@@ -80,20 +80,20 @@ public function test_creates_aliased_expression() : void
     public function test_creates_simple_type_cast() : void
     {
         $expr = Literal::int(42);
-        $dataType = DataType::varchar(100);
+        $dataType = ColumnType::varchar(100);
         $cast = new TypeCast($expr, $dataType);
 
-        self::assertSame($dataType, $cast->getDataType());
+        self::assertSame($dataType, $cast->getColumnType());
         self::assertSame($expr, $cast->getExpression());
     }
 
     public function test_creates_type_cast_with_schema() : void
     {
         $expr = Column::name('value');
-        $dataType = DataType::integer();
+        $dataType = ColumnType::integer();
         $cast = new TypeCast($expr, $dataType);
 
-        self::assertSame($dataType, $cast->getDataType());
+        self::assertSame($dataType, $cast->getColumnType());
     }
 
     public function test_recreates_from_ast() : void
@@ -118,7 +118,7 @@ public function test_recreates_from_ast() : void
 
         $cast = TypeCast::fromAst($node);
 
-        self::assertInstanceOf(DataType::class, $cast->getDataType());
+        self::assertInstanceOf(ColumnType::class, $cast->getColumnType());
     }
 
     public function test_recreates_type_cast_with_schema_from_ast() : void
@@ -147,39 +147,39 @@ public function test_recreates_type_cast_with_schema_from_ast() : void
 
         $cast = TypeCast::fromAst($node);
 
-        self::assertInstanceOf(DataType::class, $cast->getDataType());
+        self::assertInstanceOf(ColumnType::class, $cast->getColumnType());
     }
 
     public function test_round_trip_conversion() : void
     {
         $expr = Column::name('amount');
-        $cast = new TypeCast($expr, DataType::numeric(10, 2));
+        $cast = new TypeCast($expr, ColumnType::numeric(10, 2));
 
         $node = $cast->toAst();
         $restored = TypeCast::fromAst($node);
 
-        self::assertInstanceOf(DataType::class, $restored->getDataType());
+        self::assertInstanceOf(ColumnType::class, $restored->getColumnType());
     }
 
-    public function test_with_data_type_creates_new_instance() : void
+    public function test_with_column_type_creates_new_instance() : void
     {
         $expr = Literal::int(1);
-        $dataType1 = DataType::integer();
-        $dataType2 = DataType::varchar(100);
+        $dataType1 = ColumnType::integer();
+        $dataType2 = ColumnType::varchar(100);
         $cast = new TypeCast($expr, $dataType1);
 
-        $newCast = $cast->withDataType($dataType2);
+        $newCast = $cast->withColumnType($dataType2);
 
         self::assertNotSame($cast, $newCast);
-        self::assertSame($dataType1, $cast->getDataType());
-        self::assertSame($dataType2, $newCast->getDataType());
+        self::assertSame($dataType1, $cast->getColumnType());
+        self::assertSame($dataType2, $newCast->getColumnType());
     }
 
     public function test_with_expression_creates_new_instance() : void
     {
         $expr1 = Literal::int(1);
         $expr2 = Literal::int(2);
-        $cast = new TypeCast($expr1, DataType::integer());
+        $cast = new TypeCast($expr1, ColumnType::integer());
 
         $newCast = $cast->withExpression($expr2);
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Insert/InsertBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Insert/InsertBuilderTest.php
index 410cf5971e..d5bc58f261 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Insert/InsertBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Insert/InsertBuilderTest.php
@@ -4,6 +4,8 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Insert;
 
+use function Flow\PostgreSql\DSL\{col, conflict_columns, insert, literal, param, parameters, select, table};
+
 use Flow\PostgreSql\{ParsedQuery, Parser};
 use Flow\PostgreSql\Protobuf\AST\{InsertStmt, Node, RawStmt};
 use Flow\PostgreSql\QueryBuilder\Clause\{ConflictTarget, OnConflictClause};
@@ -259,6 +261,22 @@ public function test_insert_returning_all() : void
         self::assertCount(1, $returning);
     }
 
+    public function test_insert_select_to_sql() : void
+    {
+        self::assertSame(
+            'INSERT INTO users (name, email) SELECT name, email FROM archived_users',
+            insert()
+                ->into('users')
+                ->columns('name', 'email')
+                ->select(
+                    select()
+                        ->select(col('name'), col('email'))
+                        ->from(table('archived_users'))
+                )
+                ->toSql()
+        );
+    }
+
     public function test_insert_with_alias() : void
     {
         $query = InsertBuilder::create()
@@ -277,6 +295,17 @@ public function test_insert_with_alias() : void
         self::assertSame('u', $alias->getAliasname());
     }
 
+    public function test_insert_with_default_values_to_sql() : void
+    {
+        self::assertSame(
+            'INSERT INTO users DEFAULT VALUES',
+            insert()
+                ->into('users')
+                ->defaultValues()
+                ->toSql()
+        );
+    }
+
     public function test_insert_with_function_values() : void
     {
         $query = InsertBuilder::create()
@@ -308,6 +337,19 @@ public function test_insert_with_function_values_deparsed_output() : void
         self::assertSame("INSERT INTO logs (message, created_at) VALUES ('test message', now())", $deparsed);
     }
 
+    public function test_insert_with_multiple_rows_to_sql() : void
+    {
+        self::assertSame(
+            "INSERT INTO users (name, email) VALUES ('John', 'john@example.com'), ('Jane', 'jane@example.com')",
+            insert()
+                ->into('users')
+                ->columns('name', 'email')
+                ->values(literal('John'), literal('john@example.com'))
+                ->values(literal('Jane'), literal('jane@example.com'))
+                ->toSql()
+        );
+    }
+
     public function test_insert_with_on_conflict_do_nothing_deparsed_output() : void
     {
         if (!\function_exists('pg_query_deparse')) {
@@ -324,6 +366,19 @@ public function test_insert_with_on_conflict_do_nothing_deparsed_output() : void
         self::assertSame("INSERT INTO users (email, name) VALUES ('john@example.com', 'John') ON CONFLICT (email) DO NOTHING", $deparsed);
     }
 
+    public function test_insert_with_on_conflict_do_nothing_to_sql() : void
+    {
+        self::assertSame(
+            "INSERT INTO users (name, email) VALUES ('John', 'john@example.com') ON CONFLICT DO NOTHING",
+            insert()
+                ->into('users')
+                ->columns('name', 'email')
+                ->values(literal('John'), literal('john@example.com'))
+                ->onConflictDoNothing()
+                ->toSql()
+        );
+    }
+
     public function test_insert_with_on_conflict_do_update_deparsed_output() : void
     {
         if (!\function_exists('pg_query_deparse')) {
@@ -343,6 +398,85 @@ public function test_insert_with_on_conflict_do_update_deparsed_output() : void
         self::assertSame("INSERT INTO users (email, name) VALUES ('john@example.com', 'John') ON CONFLICT (email) DO UPDATE SET name = excluded.name", $deparsed);
     }
 
+    public function test_insert_with_on_conflict_do_update_to_sql() : void
+    {
+        self::assertSame(
+            "INSERT INTO users (email, name) VALUES ('john@example.com', 'John') ON CONFLICT (email) DO UPDATE SET name = 'Updated John'",
+            insert()
+                ->into('users')
+                ->columns('email', 'name')
+                ->values(literal('john@example.com'), literal('John'))
+                ->onConflictDoUpdate(
+                    conflict_columns(['email']),
+                    ['name' => literal('Updated John')]
+                )
+                ->toSql()
+        );
+    }
+
+    public function test_insert_with_on_conflict_on_columns_do_nothing_to_sql() : void
+    {
+        self::assertSame(
+            "INSERT INTO users (name, email) VALUES ('John', 'john@example.com') ON CONFLICT (email) DO NOTHING",
+            insert()
+                ->into('users')
+                ->columns('name', 'email')
+                ->values(literal('John'), literal('john@example.com'))
+                ->onConflictDoNothing(conflict_columns(['email']))
+                ->toSql()
+        );
+    }
+
+    public function test_insert_with_parameters_function_multiple_rows_to_sql() : void
+    {
+        self::assertSame(
+            'INSERT INTO users (name, email) VALUES ($1, $2), ($3, $4)',
+            insert()
+                ->into('users')
+                ->columns('name', 'email')
+                ->values(...parameters(2))
+                ->values(...parameters(2, startAt: 3))
+                ->toSql()
+        );
+    }
+
+    public function test_insert_with_parameters_function_to_sql() : void
+    {
+        self::assertSame(
+            'INSERT INTO users (name, email) VALUES ($1, $2)',
+            insert()
+                ->into('users')
+                ->columns('name', 'email')
+                ->values(...parameters(2))
+                ->toSql()
+        );
+    }
+
+    public function test_insert_with_parameters_to_sql() : void
+    {
+        self::assertSame(
+            'INSERT INTO users (name, email) VALUES ($1, $2)',
+            insert()
+                ->into('users')
+                ->columns('name', 'email')
+                ->values(param(1), param(2))
+                ->toSql()
+        );
+    }
+
+    public function test_insert_with_returning_all_to_sql() : void
+    {
+        self::assertSame(
+            "INSERT INTO users (name) VALUES ('John') RETURNING *",
+            insert()
+                ->into('users')
+                ->columns('name')
+                ->values(literal('John'))
+                ->returningAll()
+                ->toSql()
+        );
+    }
+
     public function test_insert_with_returning_deparsed_output() : void
     {
         if (!\function_exists('pg_query_deparse')) {
@@ -359,6 +493,19 @@ public function test_insert_with_returning_deparsed_output() : void
         self::assertSame("INSERT INTO users (name) VALUES ('John') RETURNING id", $deparsed);
     }
 
+    public function test_insert_with_returning_to_sql() : void
+    {
+        self::assertSame(
+            "INSERT INTO users (name) VALUES ('John') RETURNING id",
+            insert()
+                ->into('users')
+                ->columns('name')
+                ->values(literal('John'))
+                ->returning(col('id'))
+                ->toSql()
+        );
+    }
+
     public function test_insert_with_schema() : void
     {
         $query = InsertBuilder::create()
@@ -389,6 +536,18 @@ public function test_insert_with_schema_deparsed_output() : void
         self::assertSame("INSERT INTO public.users (name) VALUES ('John')", $deparsed);
     }
 
+    public function test_insert_with_schema_qualified_table_to_sql() : void
+    {
+        self::assertSame(
+            "INSERT INTO public.users (name) VALUES ('John')",
+            insert()
+                ->into('public.users')
+                ->columns('name')
+                ->values(literal('John'))
+                ->toSql()
+        );
+    }
+
     public function test_insert_without_columns() : void
     {
         $query = InsertBuilder::create()
@@ -607,6 +766,18 @@ public function test_simple_insert_deparsed_output() : void
         self::assertSame("INSERT INTO users (name, email) VALUES ('John', 'john@example.com')", $deparsed);
     }
 
+    public function test_simple_insert_with_values_to_sql() : void
+    {
+        self::assertSame(
+            "INSERT INTO users (name, email) VALUES ('John', 'john@example.com')",
+            insert()
+                ->into('users')
+                ->columns('name', 'email')
+                ->values(literal('John'), literal('john@example.com'))
+                ->toSql()
+        );
+    }
+
     private function deparse(InsertStmt $insertStmt) : string
     {
         $parser = new Parser();
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Merge/MergeBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Merge/MergeBuilderTest.php
index 043480e40a..4dd1b4a35d 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Merge/MergeBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Merge/MergeBuilderTest.php
@@ -4,6 +4,8 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Merge;
 
+use function Flow\PostgreSql\DSL\{col, cte, eq, gt, literal, merge, param, select, table, with};
+
 use Flow\PostgreSql\{ParsedQuery, Parser};
 use Flow\PostgreSql\Protobuf\AST\{MergeStmt, Node, RawStmt, SelectStmt};
 use Flow\PostgreSql\QueryBuilder\Clause\{CTE, WithClause};
@@ -144,6 +146,21 @@ public function test_merge_match_kind_enum_values() : void
         self::assertSame(3, MergeMatchKind::NOT_MATCHED_BY_TARGET->value);
     }
 
+    public function test_merge_simple_update_to_sql() : void
+    {
+        self::assertSame(
+            'MERGE INTO target USING source s ON target.id = s.id WHEN MATCHED THEN UPDATE SET value = s.value',
+            merge('target')
+                ->using('source', 's')
+                ->on(eq(col('target.id'), col('s.id')))
+                ->whenMatched()
+                ->thenUpdate([
+                    'value' => col('s.value'),
+                ])
+                ->toSql()
+        );
+    }
+
     public function test_merge_using_parses_schema_and_table() : void
     {
         $query = MergeBuilder::create()
@@ -168,6 +185,27 @@ public function test_merge_using_parses_schema_and_table() : void
         self::assertSame('s', $alias->getAliasname());
     }
 
+    public function test_merge_using_subquery_to_sql() : void
+    {
+        self::assertSame(
+            'MERGE INTO users USING (SELECT id, name, email FROM staged_data) src ON users.id = src.id WHEN MATCHED THEN UPDATE SET name = src.name, email = src.email',
+            merge('users')
+                ->using(
+                    select()
+                        ->select(col('id'), col('name'), col('email'))
+                        ->from(table('staged_data')),
+                    'src'
+                )
+                ->on(eq(col('users.id'), col('src.id')))
+                ->whenMatched()
+                ->thenUpdate([
+                    'name' => col('src.name'),
+                    'email' => col('src.email'),
+                ])
+                ->toSql()
+        );
+    }
+
     public function test_merge_when_clause_data_structure() : void
     {
         $condition = new Comparison(Column::name('id'), ComparisonOperator::EQ, Literal::int(1));
@@ -436,6 +474,97 @@ public function test_merge_when_not_matched_with_condition() : void
         self::assertTrue($whenClause->hasCondition());
     }
 
+    public function test_merge_with_conditional_when_matched_to_sql() : void
+    {
+        self::assertSame(
+            'MERGE INTO products p USING price_updates pu ON p.id = pu.product_id WHEN MATCHED AND pu.price > 0 THEN UPDATE SET price = pu.price',
+            merge('products', 'p')
+                ->using('price_updates', 'pu')
+                ->on(eq(col('p.id'), col('pu.product_id')))
+                ->whenMatchedAnd(gt(col('pu.price'), literal(0)))
+                ->thenUpdate([
+                    'price' => col('pu.price'),
+                ])
+                ->toSql()
+        );
+    }
+
+    public function test_merge_with_cte_to_sql() : void
+    {
+        self::assertSame(
+            'WITH staged_data AS (SELECT id, name FROM raw_input) MERGE INTO users USING staged_data s ON users.id = s.id WHEN MATCHED THEN UPDATE SET name = s.name',
+            with(cte('staged_data', select()
+                ->select(col('id'), col('name'))
+                ->from(table('raw_input'))))->merge('users')
+                ->using('staged_data', 's')
+                ->on(eq(col('users.id'), col('s.id')))
+                ->whenMatched()
+                ->thenUpdate([
+                    'name' => col('s.name'),
+                ])
+                ->toSql()
+        );
+    }
+
+    public function test_merge_with_delete_to_sql() : void
+    {
+        self::assertSame(
+            'MERGE INTO target_table t USING source_table s ON t.id = s.id WHEN MATCHED THEN DELETE',
+            merge('target_table', 't')
+                ->using('source_table', 's')
+                ->on(eq(col('t.id'), col('s.id')))
+                ->whenMatched()
+                ->thenDelete()
+                ->toSql()
+        );
+    }
+
+    public function test_merge_with_do_nothing_to_sql() : void
+    {
+        self::assertSame(
+            'MERGE INTO products USING updates u ON products.id = u.id WHEN MATCHED THEN DO NOTHING',
+            merge('products')
+                ->using('updates', 'u')
+                ->on(eq(col('products.id'), col('u.id')))
+                ->whenMatched()
+                ->thenDoNothing()
+                ->toSql()
+        );
+    }
+
+    public function test_merge_with_insert_to_sql() : void
+    {
+        self::assertSame(
+            'MERGE INTO customers USING new_customers nc ON customers.id = nc.id WHEN NOT MATCHED THEN INSERT (id, name, email) VALUES (nc.id, nc.name, nc.email)',
+            merge('customers')
+                ->using('new_customers', 'nc')
+                ->on(eq(col('customers.id'), col('nc.id')))
+                ->whenNotMatched()
+                ->thenInsert(
+                    ['id', 'name', 'email'],
+                    [col('nc.id'), col('nc.name'), col('nc.email')]
+                )
+                ->toSql()
+        );
+    }
+
+    public function test_merge_with_insert_values_to_sql() : void
+    {
+        self::assertSame(
+            "MERGE INTO users USING new_users n ON users.id = n.id WHEN NOT MATCHED THEN INSERT (id, name, status) VALUES (n.id, n.name, 'active')",
+            merge('users')
+                ->using('new_users', 'n')
+                ->on(eq(col('users.id'), col('n.id')))
+                ->whenNotMatched()
+                ->thenInsertValues([
+                    'id' => col('n.id'),
+                    'name' => col('n.name'),
+                    'status' => literal('active'),
+                ])
+                ->toSql()
+        );
+    }
+
     public function test_merge_with_multiple_when_clauses() : void
     {
         $query = MergeBuilder::create()
@@ -463,6 +592,21 @@ public function test_merge_with_multiple_when_clauses() : void
         self::assertSame(MergeActionType::INSERT->value, $secondClause->getCommandType());
     }
 
+    public function test_merge_with_parameters_to_sql() : void
+    {
+        self::assertSame(
+            'MERGE INTO accounts USING transactions t ON accounts.id = t.account_id WHEN MATCHED THEN UPDATE SET balance = $1',
+            merge('accounts')
+                ->using('transactions', 't')
+                ->on(eq(col('accounts.id'), col('t.account_id')))
+                ->whenMatched()
+                ->thenUpdate([
+                    'balance' => param(1),
+                ])
+                ->toSql()
+        );
+    }
+
     public function test_merge_with_source_subquery() : void
     {
         $subquery = SelectBuilder::create()
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/AlterTable/AlterTableBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/AlterTable/AlterTableBuilderTest.php
index 6451c2dad4..5cf234ec0b 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/AlterTable/AlterTableBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/AlterTable/AlterTableBuilderTest.php
@@ -4,10 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\AlterTable;
 
+use function Flow\PostgreSql\DSL\literal;
 use Flow\PostgreSql\Protobuf\AST\{AlterTableStmt, AlterTableType, DropBehavior, ObjectType};
-use Flow\PostgreSql\QueryBuilder\Schema\AlterTable\AlterTableBuilder;
-use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, DataType};
+use Flow\PostgreSql\QueryBuilder\Schema\AlterTable\{AlterTableBuilder, RenameTableBuilder};
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, ColumnType};
 use Flow\PostgreSql\QueryBuilder\Schema\Constraint\{ForeignKeyConstraint, PrimaryKeyConstraint, UniqueConstraint};
+use Flow\PostgreSql\QueryBuilder\Sql;
 use PHPUnit\Framework\TestCase;
 
 final class AlterTableBuilderTest extends TestCase
@@ -22,7 +24,7 @@ protected function setUp() : void
     public function test_add_column() : void
     {
         $builder = AlterTableBuilder::create('users')
-            ->addColumn(ColumnDefinition::create('email', DataType::varchar(255))->notNull());
+            ->addColumn(ColumnDefinition::create('email', ColumnType::varchar(255))->notNull());
 
         $ast = $builder->toAst();
 
@@ -56,6 +58,28 @@ public function test_add_foreign_key_constraint() : void
         self::assertSame(AlterTableType::AT_AddConstraint, $ast->getCmds()[0]->getAlterTableCmd()->getSubtype());
     }
 
+    public function test_add_inherit() : void
+    {
+        $builder = AlterTableBuilder::create('employees')
+            ->addInherit('persons');
+
+        $ast = $builder->toAst();
+
+        self::assertInstanceOf(AlterTableStmt::class, $ast);
+        self::assertCount(1, $ast->getCmds());
+        self::assertSame(AlterTableType::AT_AddInherit, $ast->getCmds()[0]->getAlterTableCmd()->getSubtype());
+        self::assertTrue($ast->getCmds()[0]->getAlterTableCmd()->hasDef());
+        self::assertSame('persons', $ast->getCmds()[0]->getAlterTableCmd()->getDef()->getRangeVar()->getRelname());
+    }
+
+    public function test_add_inherit_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER TABLE employees INHERIT persons',
+            AlterTableBuilder::create('employees')->addInherit('persons')->toSql(),
+        );
+    }
+
     public function test_add_unique_constraint() : void
     {
         $builder = AlterTableBuilder::create('users')
@@ -98,7 +122,7 @@ public function test_alter_column_drop_not_null() : void
     public function test_alter_column_set_default() : void
     {
         $builder = AlterTableBuilder::create('users')
-            ->alterColumnSetDefault('status', "'active'");
+            ->alterColumnSetDefault('status', literal('active'));
 
         $ast = $builder->toAst();
 
@@ -125,7 +149,7 @@ public function test_alter_column_set_not_null() : void
     public function test_alter_column_type() : void
     {
         $builder = AlterTableBuilder::create('users')
-            ->alterColumnType('name', DataType::text());
+            ->alterColumnType('name', ColumnType::text());
 
         $ast = $builder->toAst();
 
@@ -139,7 +163,7 @@ public function test_alter_table_if_exists() : void
     {
         $builder = AlterTableBuilder::create('users')
             ->ifExists()
-            ->addColumn(ColumnDefinition::create('email', DataType::varchar(255)));
+            ->addColumn(ColumnDefinition::create('email', ColumnType::varchar(255)));
 
         $ast = $builder->toAst();
 
@@ -150,7 +174,7 @@ public function test_alter_table_if_exists() : void
     public function test_alter_table_with_schema() : void
     {
         $builder = AlterTableBuilder::create('users', 'public')
-            ->addColumn(ColumnDefinition::create('email', DataType::varchar(255)));
+            ->addColumn(ColumnDefinition::create('email', ColumnType::varchar(255)));
 
         $ast = $builder->toAst();
 
@@ -231,10 +255,32 @@ public function test_drop_constraint_if_exists() : void
         self::assertTrue($ast->getCmds()[0]->getAlterTableCmd()->getMissingOk());
     }
 
+    public function test_drop_inherit() : void
+    {
+        $builder = AlterTableBuilder::create('employees')
+            ->dropInherit('persons');
+
+        $ast = $builder->toAst();
+
+        self::assertInstanceOf(AlterTableStmt::class, $ast);
+        self::assertCount(1, $ast->getCmds());
+        self::assertSame(AlterTableType::AT_DropInherit, $ast->getCmds()[0]->getAlterTableCmd()->getSubtype());
+        self::assertTrue($ast->getCmds()[0]->getAlterTableCmd()->hasDef());
+        self::assertSame('persons', $ast->getCmds()[0]->getAlterTableCmd()->getDef()->getRangeVar()->getRelname());
+    }
+
+    public function test_drop_inherit_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER TABLE employees NO INHERIT persons',
+            AlterTableBuilder::create('employees')->dropInherit('persons')->toSql(),
+        );
+    }
+
     public function test_immutability() : void
     {
         $original = AlterTableBuilder::create('users');
-        $modified = $original->addColumn(ColumnDefinition::create('email', DataType::varchar(255)));
+        $modified = $original->addColumn(ColumnDefinition::create('email', ColumnType::varchar(255)));
 
         self::assertCount(0, $original->toAst()->getCmds());
         self::assertCount(1, $modified->toAst()->getCmds());
@@ -243,8 +289,8 @@ public function test_immutability() : void
     public function test_multiple_commands() : void
     {
         $builder = AlterTableBuilder::create('users')
-            ->addColumn(ColumnDefinition::create('email', DataType::varchar(255))->notNull())
-            ->addColumn(ColumnDefinition::create('phone', DataType::varchar(20)))
+            ->addColumn(ColumnDefinition::create('email', ColumnType::varchar(255))->notNull())
+            ->addColumn(ColumnDefinition::create('phone', ColumnType::varchar(20)))
             ->addConstraint(UniqueConstraint::create('email'))
             ->alterColumnSetNotNull('phone');
 
@@ -254,10 +300,111 @@ public function test_multiple_commands() : void
         self::assertCount(4, $ast->getCmds());
     }
 
+    public function test_rename_column_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER TABLE users RENAME COLUMN name TO full_name',
+            AlterTableBuilder::create('users')->renameColumn('name', 'full_name')->toSql()
+        );
+    }
+
+    public function test_rename_constraint_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER TABLE users RENAME CONSTRAINT pk_old TO pk_new',
+            AlterTableBuilder::create('users')->renameConstraint('pk_old', 'pk_new')->toSql()
+        );
+    }
+
+    public function test_rename_table_builder_implements_sql_query() : void
+    {
+        self::assertInstanceOf(
+            Sql::class,
+            RenameTableBuilder::renameTo('users', null, 'people', false)
+        );
+    }
+
+    public function test_rename_table_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER TABLE users RENAME TO people',
+            AlterTableBuilder::create('users')->renameTo('people')->toSql()
+        );
+    }
+
+    public function test_set_logged() : void
+    {
+        $builder = AlterTableBuilder::create('users')
+            ->setLogged();
+
+        self::assertSame('ALTER TABLE users SET LOGGED', $builder->toSql());
+
+        $ast = $builder->toAst();
+
+        self::assertInstanceOf(AlterTableStmt::class, $ast);
+        self::assertSame(ObjectType::OBJECT_TABLE, $ast->getObjtype());
+        self::assertSame('users', $ast->getRelation()->getRelname());
+        self::assertCount(1, $ast->getCmds());
+        self::assertSame(AlterTableType::AT_SetLogged, $ast->getCmds()[0]->getAlterTableCmd()->getSubtype());
+    }
+
+    public function test_set_logged_with_schema() : void
+    {
+        self::assertSame(
+            'ALTER TABLE public.users SET LOGGED',
+            AlterTableBuilder::create('users', 'public')->setLogged()->toSql(),
+        );
+    }
+
+    public function test_set_tablespace() : void
+    {
+        $builder = AlterTableBuilder::create('users')
+            ->setTablespace('fast_storage');
+
+        $ast = $builder->toAst();
+
+        self::assertInstanceOf(AlterTableStmt::class, $ast);
+        self::assertCount(1, $ast->getCmds());
+        self::assertSame(AlterTableType::AT_SetTableSpace, $ast->getCmds()[0]->getAlterTableCmd()->getSubtype());
+        self::assertSame('fast_storage', $ast->getCmds()[0]->getAlterTableCmd()->getName());
+    }
+
+    public function test_set_tablespace_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER TABLE users SET TABLESPACE fast_storage',
+            AlterTableBuilder::create('users')->setTablespace('fast_storage')->toSql(),
+        );
+    }
+
+    public function test_set_unlogged() : void
+    {
+        $builder = AlterTableBuilder::create('users')
+            ->setUnlogged();
+
+        self::assertSame('ALTER TABLE users SET UNLOGGED', $builder->toSql());
+
+        $ast = $builder->toAst();
+
+        self::assertInstanceOf(AlterTableStmt::class, $ast);
+        self::assertSame(ObjectType::OBJECT_TABLE, $ast->getObjtype());
+        self::assertSame('users', $ast->getRelation()->getRelname());
+        self::assertCount(1, $ast->getCmds());
+        self::assertSame(AlterTableType::AT_SetUnLogged, $ast->getCmds()[0]->getAlterTableCmd()->getSubtype());
+    }
+
+    public function test_set_unlogged_if_exists() : void
+    {
+        self::assertSame(
+            'ALTER TABLE IF EXISTS users SET UNLOGGED',
+            AlterTableBuilder::create('users')->ifExists()->setUnlogged()->toSql(),
+        );
+    }
+
     public function test_simple_alter_table() : void
     {
         $builder = AlterTableBuilder::create('users')
-            ->addColumn(ColumnDefinition::create('email', DataType::varchar(255)));
+            ->addColumn(ColumnDefinition::create('email', ColumnType::varchar(255)));
 
         $ast = $builder->toAst();
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/ColumnDefinitionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/ColumnDefinitionTest.php
index f591660760..48a47921cf 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/ColumnDefinitionTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/ColumnDefinitionTest.php
@@ -4,11 +4,11 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema;
 
-use function Flow\PostgreSql\DSL\{current_date, current_time, current_timestamp};
+use function Flow\PostgreSql\DSL\{col, concat, current_date, current_time, current_timestamp, gt, literal};
 use Flow\PostgreSql\Protobuf\AST\{ColumnDef, ConstrType};
 use Flow\PostgreSql\QueryBuilder\Expression\SQLValueFunctionExpression;
-use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, DataType};
-
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, ColumnType};
+use Flow\PostgreSql\Schema\IdentityGeneration;
 use PHPUnit\Framework\TestCase;
 
 final class ColumnDefinitionTest extends TestCase
@@ -22,7 +22,7 @@ protected function setUp() : void
 
     public function test_basic_column() : void
     {
-        $column = ColumnDefinition::create('id', DataType::integer());
+        $column = ColumnDefinition::create('id', ColumnType::integer());
 
         $ast = $column->toAst();
 
@@ -33,8 +33,8 @@ public function test_basic_column() : void
 
     public function test_check_constraint() : void
     {
-        $column = ColumnDefinition::create('age', DataType::integer())
-            ->check('age > 0');
+        $column = ColumnDefinition::create('age', ColumnType::integer())
+            ->check(gt(col('age'), literal(0)));
 
         $ast = $column->toAst();
 
@@ -45,7 +45,7 @@ public function test_check_constraint() : void
 
     public function test_column_default_with_current_date() : void
     {
-        $column = ColumnDefinition::create('birth_date', DataType::date())
+        $column = ColumnDefinition::create('birth_date', ColumnType::date())
             ->default(current_date());
 
         $ast = $column->toAst();
@@ -57,7 +57,7 @@ public function test_column_default_with_current_date() : void
 
     public function test_column_default_with_current_time() : void
     {
-        $column = ColumnDefinition::create('check_in_time', DataType::time())
+        $column = ColumnDefinition::create('check_in_time', ColumnType::time())
             ->default(current_time());
 
         $ast = $column->toAst();
@@ -69,7 +69,7 @@ public function test_column_default_with_current_time() : void
 
     public function test_column_default_with_current_timestamp() : void
     {
-        $column = ColumnDefinition::create('created_at', DataType::timestamp())
+        $column = ColumnDefinition::create('created_at', ColumnType::timestamp())
             ->default(current_timestamp());
 
         $ast = $column->toAst();
@@ -81,7 +81,7 @@ public function test_column_default_with_current_timestamp() : void
 
     public function test_column_default_with_expression() : void
     {
-        $column = ColumnDefinition::create('created_at', DataType::timestamp())
+        $column = ColumnDefinition::create('created_at', ColumnType::timestamp())
             ->default(SQLValueFunctionExpression::currentTimestamp());
 
         $ast = $column->toAst();
@@ -93,7 +93,7 @@ public function test_column_default_with_expression() : void
 
     public function test_column_with_boolean_default_false() : void
     {
-        $column = ColumnDefinition::create('is_active', DataType::boolean())
+        $column = ColumnDefinition::create('is_active', ColumnType::boolean())
             ->default(false);
 
         $ast = $column->toAst();
@@ -105,7 +105,7 @@ public function test_column_with_boolean_default_false() : void
 
     public function test_column_with_boolean_default_true() : void
     {
-        $column = ColumnDefinition::create('is_active', DataType::boolean())
+        $column = ColumnDefinition::create('is_active', ColumnType::boolean())
             ->default(true);
 
         $ast = $column->toAst();
@@ -117,7 +117,7 @@ public function test_column_with_boolean_default_true() : void
 
     public function test_column_with_default_integer() : void
     {
-        $column = ColumnDefinition::create('status', DataType::integer())
+        $column = ColumnDefinition::create('status', ColumnType::integer())
             ->default(0);
 
         $ast = $column->toAst();
@@ -129,7 +129,7 @@ public function test_column_with_default_integer() : void
 
     public function test_column_with_default_null() : void
     {
-        $column = ColumnDefinition::create('optional', DataType::text())
+        $column = ColumnDefinition::create('optional', ColumnType::text())
             ->default(null);
 
         $ast = $column->toAst();
@@ -141,8 +141,8 @@ public function test_column_with_default_null() : void
 
     public function test_column_with_default_raw_expression() : void
     {
-        $column = ColumnDefinition::create('created_at', DataType::timestamp())
-            ->defaultRaw('CURRENT_TIMESTAMP');
+        $column = ColumnDefinition::create('created_at', ColumnType::timestamp())
+            ->defaultRaw(current_timestamp());
 
         $ast = $column->toAst();
 
@@ -153,7 +153,7 @@ public function test_column_with_default_raw_expression() : void
 
     public function test_column_with_default_string() : void
     {
-        $column = ColumnDefinition::create('name', DataType::varchar(100))
+        $column = ColumnDefinition::create('name', ColumnType::varchar(100))
             ->default('Unknown');
 
         $ast = $column->toAst();
@@ -165,8 +165,8 @@ public function test_column_with_default_string() : void
 
     public function test_generated_column() : void
     {
-        $column = ColumnDefinition::create('full_name', DataType::text())
-            ->generatedAs("first_name || ' ' || last_name");
+        $column = ColumnDefinition::create('full_name', ColumnType::text())
+            ->generatedAs(concat(col('first_name'), literal(' '), col('last_name')));
 
         $ast = $column->toAst();
 
@@ -178,29 +178,37 @@ public function test_generated_column() : void
 
     public function test_identity_always() : void
     {
-        $column = ColumnDefinition::create('id', DataType::integer())
-            ->identity('ALWAYS');
+        $column = ColumnDefinition::create('id', ColumnType::integer())
+            ->identity(IdentityGeneration::ALWAYS);
 
         $ast = $column->toAst();
 
         self::assertInstanceOf(ColumnDef::class, $ast);
-        self::assertSame('a', $ast->getIdentity());
+
+        $constraints = $ast->getConstraints();
+        self::assertCount(1, $constraints);
+        self::assertSame(ConstrType::CONSTR_IDENTITY, $constraints[0]->getConstraint()->getContype());
+        self::assertSame('a', $constraints[0]->getConstraint()->getGeneratedWhen());
     }
 
     public function test_identity_by_default() : void
     {
-        $column = ColumnDefinition::create('id', DataType::integer())
-            ->identity('BY DEFAULT');
+        $column = ColumnDefinition::create('id', ColumnType::integer())
+            ->identity(IdentityGeneration::BY_DEFAULT);
 
         $ast = $column->toAst();
 
         self::assertInstanceOf(ColumnDef::class, $ast);
-        self::assertSame('d', $ast->getIdentity());
+
+        $constraints = $ast->getConstraints();
+        self::assertCount(1, $constraints);
+        self::assertSame(ConstrType::CONSTR_IDENTITY, $constraints[0]->getConstraint()->getContype());
+        self::assertSame('d', $constraints[0]->getConstraint()->getGeneratedWhen());
     }
 
     public function test_immutability() : void
     {
-        $original = ColumnDefinition::create('id', DataType::integer());
+        $original = ColumnDefinition::create('id', ColumnType::integer());
         $modified = $original->notNull();
 
         self::assertNotSame($original, $modified);
@@ -211,7 +219,7 @@ public function test_immutability() : void
 
     public function test_multiple_constraints() : void
     {
-        $column = ColumnDefinition::create('id', DataType::integer())
+        $column = ColumnDefinition::create('id', ColumnType::integer())
             ->notNull()
             ->primaryKey();
 
@@ -225,7 +233,7 @@ public function test_multiple_constraints() : void
 
     public function test_not_null_column() : void
     {
-        $column = ColumnDefinition::create('name', DataType::varchar(100))
+        $column = ColumnDefinition::create('name', ColumnType::varchar(100))
             ->notNull();
 
         $ast = $column->toAst();
@@ -237,7 +245,7 @@ public function test_not_null_column() : void
 
     public function test_nullable_column() : void
     {
-        $column = ColumnDefinition::create('name', DataType::varchar(100))
+        $column = ColumnDefinition::create('name', ColumnType::varchar(100))
             ->notNull()
             ->nullable();
 
@@ -249,7 +257,7 @@ public function test_nullable_column() : void
 
     public function test_primary_key_constraint() : void
     {
-        $column = ColumnDefinition::create('id', DataType::integer())
+        $column = ColumnDefinition::create('id', ColumnType::integer())
             ->primaryKey();
 
         $ast = $column->toAst();
@@ -261,7 +269,7 @@ public function test_primary_key_constraint() : void
 
     public function test_references_constraint() : void
     {
-        $column = ColumnDefinition::create('user_id', DataType::integer())
+        $column = ColumnDefinition::create('user_id', ColumnType::integer())
             ->references('users', 'id');
 
         $ast = $column->toAst();
@@ -275,7 +283,7 @@ public function test_references_constraint() : void
 
     public function test_references_with_schema() : void
     {
-        $column = ColumnDefinition::create('user_id', DataType::integer())
+        $column = ColumnDefinition::create('user_id', ColumnType::integer())
             ->references('users', 'id', 'public');
 
         $ast = $column->toAst();
@@ -288,7 +296,7 @@ public function test_references_with_schema() : void
 
     public function test_unique_constraint() : void
     {
-        $column = ColumnDefinition::create('email', DataType::varchar(255))
+        $column = ColumnDefinition::create('email', ColumnType::varchar(255))
             ->unique();
 
         $ast = $column->toAst();
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/DataTypeTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/ColumnTypeTest.php
similarity index 72%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/DataTypeTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/ColumnTypeTest.php
index ffbc99abdb..b6ef13eb89 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/DataTypeTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/ColumnTypeTest.php
@@ -4,15 +4,17 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema;
 
+use function Flow\PostgreSql\DSL\{column_type_array, column_type_bigint, column_type_boolean, column_type_custom, column_type_integer, column_type_text, column_type_varchar};
+
 use Flow\PostgreSql\Protobuf\AST\TypeName;
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 use PHPUnit\Framework\TestCase;
 
-final class DataTypeTest extends TestCase
+final class ColumnTypeTest extends TestCase
 {
     public function test_array_type() : void
     {
-        $type = DataType::array(DataType::integer());
+        $type = ColumnType::array(ColumnType::integer());
 
         $ast = $type->toAst();
 
@@ -23,7 +25,7 @@ public function test_array_type() : void
 
     public function test_bigint() : void
     {
-        $type = DataType::bigint();
+        $type = ColumnType::bigint();
 
         $ast = $type->toAst();
 
@@ -35,7 +37,7 @@ public function test_bigint() : void
 
     public function test_bigserial() : void
     {
-        $type = DataType::bigserial();
+        $type = ColumnType::bigserial();
 
         $ast = $type->toAst();
 
@@ -46,7 +48,7 @@ public function test_bigserial() : void
 
     public function test_boolean() : void
     {
-        $type = DataType::boolean();
+        $type = ColumnType::boolean();
 
         $ast = $type->toAst();
 
@@ -58,7 +60,7 @@ public function test_boolean() : void
 
     public function test_bytea() : void
     {
-        $type = DataType::bytea();
+        $type = ColumnType::bytea();
 
         $ast = $type->toAst();
 
@@ -68,7 +70,7 @@ public function test_bytea() : void
 
     public function test_char_with_length() : void
     {
-        $type = DataType::char(10);
+        $type = ColumnType::char(10);
 
         $ast = $type->toAst();
 
@@ -80,7 +82,7 @@ public function test_char_with_length() : void
 
     public function test_cidr() : void
     {
-        $type = DataType::cidr();
+        $type = ColumnType::cidr();
 
         $ast = $type->toAst();
 
@@ -90,7 +92,7 @@ public function test_cidr() : void
 
     public function test_custom_type_with_schema() : void
     {
-        $type = DataType::custom('my_type', 'my_schema');
+        $type = ColumnType::custom('my_type', 'my_schema');
 
         $ast = $type->toAst();
 
@@ -102,7 +104,7 @@ public function test_custom_type_with_schema() : void
 
     public function test_custom_type_without_schema() : void
     {
-        $type = DataType::custom('my_type');
+        $type = ColumnType::custom('my_type');
 
         $ast = $type->toAst();
 
@@ -113,7 +115,7 @@ public function test_custom_type_without_schema() : void
 
     public function test_date() : void
     {
-        $type = DataType::date();
+        $type = ColumnType::date();
 
         $ast = $type->toAst();
 
@@ -123,7 +125,7 @@ public function test_date() : void
 
     public function test_double_precision() : void
     {
-        $type = DataType::doublePrecision();
+        $type = ColumnType::doublePrecision();
 
         $ast = $type->toAst();
 
@@ -133,7 +135,7 @@ public function test_double_precision() : void
 
     public function test_inet() : void
     {
-        $type = DataType::inet();
+        $type = ColumnType::inet();
 
         $ast = $type->toAst();
 
@@ -143,7 +145,7 @@ public function test_inet() : void
 
     public function test_integer() : void
     {
-        $type = DataType::integer();
+        $type = ColumnType::integer();
 
         $ast = $type->toAst();
 
@@ -155,7 +157,7 @@ public function test_integer() : void
 
     public function test_interval() : void
     {
-        $type = DataType::interval();
+        $type = ColumnType::interval();
 
         $ast = $type->toAst();
 
@@ -163,9 +165,64 @@ public function test_interval() : void
         self::assertSame('interval', $ast->getNames()[1]->getString()->getSval());
     }
 
+    public function test_is_equal_array_different_element_type() : void
+    {
+        self::assertFalse(column_type_array(column_type_integer())->isEqual(column_type_array(column_type_text())));
+    }
+
+    public function test_is_equal_array_same_element_type() : void
+    {
+        self::assertTrue(column_type_array(column_type_integer())->isEqual(column_type_array(column_type_integer())));
+    }
+
+    public function test_is_equal_array_vs_non_array() : void
+    {
+        self::assertFalse(column_type_array(column_type_integer())->isEqual(column_type_integer()));
+    }
+
+    public function test_is_equal_boolean_vs_bigint() : void
+    {
+        self::assertFalse(column_type_boolean()->isEqual(column_type_bigint()));
+    }
+
+    public function test_is_equal_custom_types_different_name() : void
+    {
+        self::assertFalse(column_type_custom('type_a')->isEqual(column_type_custom('type_b')));
+    }
+
+    public function test_is_equal_custom_types_different_schema() : void
+    {
+        self::assertFalse(column_type_custom('my_type', 'schema_a')->isEqual(column_type_custom('my_type', 'schema_b')));
+    }
+
+    public function test_is_equal_custom_types_same() : void
+    {
+        self::assertTrue(column_type_custom('my_type', 'my_schema')->isEqual(column_type_custom('my_type', 'my_schema')));
+    }
+
+    public function test_is_equal_with_different_types() : void
+    {
+        self::assertFalse(column_type_integer()->isEqual(column_type_text()));
+    }
+
+    public function test_is_equal_with_different_typmods() : void
+    {
+        self::assertFalse(column_type_varchar(100)->isEqual(column_type_varchar(255)));
+    }
+
+    public function test_is_equal_with_same_type() : void
+    {
+        self::assertTrue(column_type_integer()->isEqual(column_type_integer()));
+    }
+
+    public function test_is_equal_with_same_type_and_typmods() : void
+    {
+        self::assertTrue(column_type_varchar(255)->isEqual(column_type_varchar(255)));
+    }
+
     public function test_json() : void
     {
-        $type = DataType::json();
+        $type = ColumnType::json();
 
         $ast = $type->toAst();
 
@@ -175,7 +232,7 @@ public function test_json() : void
 
     public function test_jsonb() : void
     {
-        $type = DataType::jsonb();
+        $type = ColumnType::jsonb();
 
         $ast = $type->toAst();
 
@@ -185,7 +242,7 @@ public function test_jsonb() : void
 
     public function test_macaddr() : void
     {
-        $type = DataType::macaddr();
+        $type = ColumnType::macaddr();
 
         $ast = $type->toAst();
 
@@ -195,7 +252,7 @@ public function test_macaddr() : void
 
     public function test_numeric_with_precision_and_scale() : void
     {
-        $type = DataType::numeric(10, 2);
+        $type = ColumnType::numeric(10, 2);
 
         $ast = $type->toAst();
 
@@ -208,7 +265,7 @@ public function test_numeric_with_precision_and_scale() : void
 
     public function test_numeric_with_precision_only() : void
     {
-        $type = DataType::numeric(10);
+        $type = ColumnType::numeric(10);
 
         $ast = $type->toAst();
 
@@ -220,7 +277,7 @@ public function test_numeric_with_precision_only() : void
 
     public function test_numeric_without_precision() : void
     {
-        $type = DataType::numeric();
+        $type = ColumnType::numeric();
 
         $ast = $type->toAst();
 
@@ -231,7 +288,7 @@ public function test_numeric_without_precision() : void
 
     public function test_real() : void
     {
-        $type = DataType::real();
+        $type = ColumnType::real();
 
         $ast = $type->toAst();
 
@@ -241,7 +298,7 @@ public function test_real() : void
 
     public function test_serial() : void
     {
-        $type = DataType::serial();
+        $type = ColumnType::serial();
 
         $ast = $type->toAst();
 
@@ -252,7 +309,7 @@ public function test_serial() : void
 
     public function test_smallint() : void
     {
-        $type = DataType::smallint();
+        $type = ColumnType::smallint();
 
         $ast = $type->toAst();
 
@@ -262,7 +319,7 @@ public function test_smallint() : void
 
     public function test_text() : void
     {
-        $type = DataType::text();
+        $type = ColumnType::text();
 
         $ast = $type->toAst();
 
@@ -272,7 +329,7 @@ public function test_text() : void
 
     public function test_time_with_precision() : void
     {
-        $type = DataType::time(3);
+        $type = ColumnType::time(3);
 
         $ast = $type->toAst();
 
@@ -284,7 +341,7 @@ public function test_time_with_precision() : void
 
     public function test_time_without_precision() : void
     {
-        $type = DataType::time();
+        $type = ColumnType::time();
 
         $ast = $type->toAst();
 
@@ -295,7 +352,7 @@ public function test_time_without_precision() : void
 
     public function test_timestamp_with_precision() : void
     {
-        $type = DataType::timestamp(6);
+        $type = ColumnType::timestamp(6);
 
         $ast = $type->toAst();
 
@@ -307,7 +364,7 @@ public function test_timestamp_with_precision() : void
 
     public function test_timestamp_without_precision() : void
     {
-        $type = DataType::timestamp();
+        $type = ColumnType::timestamp();
 
         $ast = $type->toAst();
 
@@ -318,7 +375,7 @@ public function test_timestamp_without_precision() : void
 
     public function test_timestamptz_with_precision() : void
     {
-        $type = DataType::timestamptz(3);
+        $type = ColumnType::timestamptz(3);
 
         $ast = $type->toAst();
 
@@ -330,7 +387,7 @@ public function test_timestamptz_with_precision() : void
 
     public function test_uuid() : void
     {
-        $type = DataType::uuid();
+        $type = ColumnType::uuid();
 
         $ast = $type->toAst();
 
@@ -340,7 +397,7 @@ public function test_uuid() : void
 
     public function test_varchar_with_length() : void
     {
-        $type = DataType::varchar(255);
+        $type = ColumnType::varchar(255);
 
         $ast = $type->toAst();
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Constraint/CheckConstraintTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Constraint/CheckConstraintTest.php
index 965c210cb1..6932c5ebcc 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Constraint/CheckConstraintTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Constraint/CheckConstraintTest.php
@@ -4,6 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Constraint;
 
+use function Flow\PostgreSql\DSL\{col, ge, gt, in_, literal, lt};
 use Flow\PostgreSql\Protobuf\AST\{ConstrType, Constraint};
 use Flow\PostgreSql\QueryBuilder\Schema\Constraint\CheckConstraint;
 use PHPUnit\Framework\TestCase;
@@ -19,7 +20,7 @@ protected function setUp() : void
 
     public function test_check_constraint_with_name() : void
     {
-        $constraint = CheckConstraint::create('age > 0')
+        $constraint = CheckConstraint::create(gt(col('age'), literal(0)))
             ->name('chk_positive_age');
 
         $ast = $constraint->toAst();
@@ -31,7 +32,7 @@ public function test_check_constraint_with_name() : void
 
     public function test_complex_check_expression() : void
     {
-        $constraint = CheckConstraint::create('start_date < end_date');
+        $constraint = CheckConstraint::create(lt(col('start_date'), col('end_date')));
 
         $ast = $constraint->toAst();
 
@@ -42,7 +43,7 @@ public function test_complex_check_expression() : void
 
     public function test_immutability() : void
     {
-        $original = CheckConstraint::create('value > 0');
+        $original = CheckConstraint::create(gt(col('value'), literal(0)));
         $withName = $original->name('chk_test');
 
         self::assertNotSame($original, $withName);
@@ -52,7 +53,7 @@ public function test_immutability() : void
 
     public function test_no_inherit() : void
     {
-        $constraint = CheckConstraint::create('status IN (\'active\', \'inactive\')')
+        $constraint = CheckConstraint::create(in_(col('status'), [literal('active'), literal('inactive')]))
             ->noInherit();
 
         $ast = $constraint->toAst();
@@ -64,7 +65,7 @@ public function test_no_inherit() : void
 
     public function test_simple_check_constraint() : void
     {
-        $constraint = CheckConstraint::create('age > 0');
+        $constraint = CheckConstraint::create(gt(col('age'), literal(0)));
 
         $ast = $constraint->toAst();
 
@@ -75,7 +76,7 @@ public function test_simple_check_constraint() : void
 
     public function test_with_all_options() : void
     {
-        $constraint = CheckConstraint::create('amount >= 0')
+        $constraint = CheckConstraint::create(ge(col('amount'), literal(0)))
             ->name('chk_positive_amount')
             ->noInherit();
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Constraint/ExcludeConstraintTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Constraint/ExcludeConstraintTest.php
index 2afe979c0c..4ec031a122 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Constraint/ExcludeConstraintTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Constraint/ExcludeConstraintTest.php
@@ -4,6 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Constraint;
 
+use function Flow\PostgreSql\DSL\{col, eq, literal};
 use Flow\PostgreSql\Protobuf\AST\{ConstrType, Constraint};
 use Flow\PostgreSql\QueryBuilder\Schema\Constraint\ExcludeConstraint;
 use PHPUnit\Framework\TestCase;
@@ -20,7 +21,7 @@ protected function setUp() : void
     public function test_exclude_constraint_with_btree() : void
     {
         $constraint = ExcludeConstraint::create('btree')
-            ->element('id', '=');
+            ->element(col('id'), '=');
 
         $ast = $constraint->toAst();
 
@@ -32,8 +33,8 @@ public function test_exclude_constraint_with_btree() : void
     public function test_exclude_constraint_with_multiple_elements() : void
     {
         $constraint = ExcludeConstraint::create('gist')
-            ->element('room_id', '=')
-            ->element('during', '&&');
+            ->element(col('room_id'), '=')
+            ->element(col('during'), '&&');
 
         $ast = $constraint->toAst();
 
@@ -45,7 +46,7 @@ public function test_exclude_constraint_with_multiple_elements() : void
     public function test_exclude_constraint_with_name() : void
     {
         $constraint = ExcludeConstraint::create()
-            ->element('room_id', '=')
+            ->element(col('room_id'), '=')
             ->name('exc_room_booking');
 
         $ast = $constraint->toAst();
@@ -57,8 +58,8 @@ public function test_exclude_constraint_with_name() : void
     public function test_exclude_constraint_with_where_clause() : void
     {
         $constraint = ExcludeConstraint::create()
-            ->element('room_id', '=')
-            ->where('active = true');
+            ->element(col('room_id'), '=')
+            ->where(eq(col('active'), literal(true)));
 
         $ast = $constraint->toAst();
 
@@ -70,9 +71,9 @@ public function test_exclude_with_all_options() : void
     {
         $constraint = ExcludeConstraint::create('gist')
             ->name('exc_booking')
-            ->element('room_id', '=')
-            ->element('period', '&&')
-            ->where('cancelled = false');
+            ->element(col('room_id'), '=')
+            ->element(col('period'), '&&')
+            ->where(eq(col('cancelled'), literal(false)));
 
         $ast = $constraint->toAst();
 
@@ -96,7 +97,7 @@ public function test_immutability() : void
     public function test_simple_exclude_constraint() : void
     {
         $constraint = ExcludeConstraint::create()
-            ->element('room_id', '=');
+            ->element(col('room_id'), '=');
 
         $ast = $constraint->toAst();
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/SequenceBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateSequence/SequenceBuilderTest.php
similarity index 61%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/SequenceBuilderTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateSequence/SequenceBuilderTest.php
index 4c9325075e..996cca6a27 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/SequenceBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateSequence/SequenceBuilderTest.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\CreateSequence;
 
 use function Flow\PostgreSql\DSL\{
     alter,
@@ -10,16 +10,18 @@
     drop
 };
 
-final class SequenceBuilderTest extends PGQueryTestCase
+use PHPUnit\Framework\TestCase;
+
+final class SequenceBuilderTest extends TestCase
 {
     public function test_alter_sequence_as_type() : void
     {
         $builder = alter()->sequence('user_id_seq')
             ->asType('smallint');
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq AS smallint'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq AS smallint',
+            $builder->toSql()
         );
     }
 
@@ -28,9 +30,9 @@ public function test_alter_sequence_cache() : void
         $builder = alter()->sequence('user_id_seq')
             ->cache(20);
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq CACHE 20'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq CACHE 20',
+            $builder->toSql()
         );
     }
 
@@ -39,9 +41,9 @@ public function test_alter_sequence_cycle() : void
         $builder = alter()->sequence('user_id_seq')
             ->cycle();
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq CYCLE'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq CYCLE',
+            $builder->toSql()
         );
     }
 
@@ -51,9 +53,9 @@ public function test_alter_sequence_if_exists() : void
             ->withIfExists()
             ->incrementBy(10);
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE IF EXISTS user_id_seq INCREMENT 10'
+        self::assertSame(
+            'ALTER SEQUENCE IF EXISTS user_id_seq INCREMENT 10',
+            $builder->toSql()
         );
     }
 
@@ -62,9 +64,9 @@ public function test_alter_sequence_increment_by() : void
         $builder = alter()->sequence('user_id_seq')
             ->incrementBy(10);
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq INCREMENT 10'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq INCREMENT 10',
+            $builder->toSql()
         );
     }
 
@@ -73,9 +75,9 @@ public function test_alter_sequence_max_value() : void
         $builder = alter()->sequence('user_id_seq')
             ->maxValue(9999999);
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq MAXVALUE 9999999'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq MAXVALUE 9999999',
+            $builder->toSql()
         );
     }
 
@@ -84,9 +86,9 @@ public function test_alter_sequence_min_value() : void
         $builder = alter()->sequence('user_id_seq')
             ->minValue(1);
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq MINVALUE 1'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq MINVALUE 1',
+            $builder->toSql()
         );
     }
 
@@ -98,9 +100,9 @@ public function test_alter_sequence_multiple_options() : void
             ->maxValue(1000000)
             ->cache(5);
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq INCREMENT 10 MINVALUE 1 MAXVALUE 1000000 CACHE 5'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq INCREMENT 10 MINVALUE 1 MAXVALUE 1000000 CACHE 5',
+            $builder->toSql()
         );
     }
 
@@ -109,9 +111,9 @@ public function test_alter_sequence_no_cycle() : void
         $builder = alter()->sequence('user_id_seq')
             ->noCycle();
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq NO CYCLE'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq NO CYCLE',
+            $builder->toSql()
         );
     }
 
@@ -120,9 +122,9 @@ public function test_alter_sequence_no_max_value() : void
         $builder = alter()->sequence('user_id_seq')
             ->noMaxValue();
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq NO MAXVALUE'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq NO MAXVALUE',
+            $builder->toSql()
         );
     }
 
@@ -131,9 +133,9 @@ public function test_alter_sequence_no_min_value() : void
         $builder = alter()->sequence('user_id_seq')
             ->noMinValue();
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq NO MINVALUE'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq NO MINVALUE',
+            $builder->toSql()
         );
     }
 
@@ -142,9 +144,9 @@ public function test_alter_sequence_owned_by() : void
         $builder = alter()->sequence('user_id_seq')
             ->ownedBy('users', 'id');
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq OWNED BY users.id'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq OWNED BY users.id',
+            $builder->toSql()
         );
     }
 
@@ -153,9 +155,9 @@ public function test_alter_sequence_owned_by_none() : void
         $builder = alter()->sequence('user_id_seq')
             ->ownedByNone();
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq OWNED BY "none"'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq OWNED BY "none"',
+            $builder->toSql()
         );
     }
 
@@ -164,9 +166,9 @@ public function test_alter_sequence_owner_to() : void
         $builder = alter()->sequence('user_id_seq')
             ->ownerTo('new_owner');
 
-        $this->assertAlterSequenceOwnerQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq OWNER TO new_owner'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq OWNER TO new_owner',
+            $builder->toSql()
         );
     }
 
@@ -176,9 +178,9 @@ public function test_alter_sequence_owner_to_if_exists() : void
             ->withIfExists()
             ->ownerTo('new_owner');
 
-        $this->assertAlterSequenceOwnerQuery(
-            $builder,
-            'ALTER SEQUENCE IF EXISTS user_id_seq OWNER TO new_owner'
+        self::assertSame(
+            'ALTER SEQUENCE IF EXISTS user_id_seq OWNER TO new_owner',
+            $builder->toSql()
         );
     }
 
@@ -187,9 +189,9 @@ public function test_alter_sequence_rename_to() : void
         $builder = alter()->sequence('old_seq')
             ->renameTo('new_seq');
 
-        $this->assertAlterSequenceRenameQuery(
-            $builder,
-            'ALTER SEQUENCE old_seq RENAME TO new_seq'
+        self::assertSame(
+            'ALTER SEQUENCE old_seq RENAME TO new_seq',
+            $builder->toSql()
         );
     }
 
@@ -199,9 +201,9 @@ public function test_alter_sequence_rename_to_if_exists() : void
             ->withIfExists()
             ->renameTo('new_seq');
 
-        $this->assertAlterSequenceRenameQuery(
-            $builder,
-            'ALTER SEQUENCE IF EXISTS old_seq RENAME TO new_seq'
+        self::assertSame(
+            'ALTER SEQUENCE IF EXISTS old_seq RENAME TO new_seq',
+            $builder->toSql()
         );
     }
 
@@ -210,9 +212,9 @@ public function test_alter_sequence_rename_to_with_schema() : void
         $builder = alter()->sequence('old_seq', 'public')
             ->renameTo('new_seq');
 
-        $this->assertAlterSequenceRenameQuery(
-            $builder,
-            'ALTER SEQUENCE public.old_seq RENAME TO new_seq'
+        self::assertSame(
+            'ALTER SEQUENCE public.old_seq RENAME TO new_seq',
+            $builder->toSql()
         );
     }
 
@@ -221,9 +223,9 @@ public function test_alter_sequence_restart() : void
         $builder = alter()->sequence('user_id_seq')
             ->restart();
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq RESTART'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq RESTART',
+            $builder->toSql()
         );
     }
 
@@ -232,9 +234,9 @@ public function test_alter_sequence_restart_with_value() : void
         $builder = alter()->sequence('user_id_seq')
             ->restartWith(1000);
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq RESTART 1000'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq RESTART 1000',
+            $builder->toSql()
         );
     }
 
@@ -243,9 +245,9 @@ public function test_alter_sequence_set_logged() : void
         $builder = alter()->sequence('user_id_seq')
             ->setLogged();
 
-        $this->assertAlterSequenceLoggingQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq SET LOGGED'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq SET LOGGED',
+            $builder->toSql()
         );
     }
 
@@ -255,9 +257,9 @@ public function test_alter_sequence_set_logged_if_exists() : void
             ->withIfExists()
             ->setLogged();
 
-        $this->assertAlterSequenceLoggingQuery(
-            $builder,
-            'ALTER SEQUENCE IF EXISTS user_id_seq SET LOGGED'
+        self::assertSame(
+            'ALTER SEQUENCE IF EXISTS user_id_seq SET LOGGED',
+            $builder->toSql()
         );
     }
 
@@ -266,9 +268,9 @@ public function test_alter_sequence_set_schema() : void
         $builder = alter()->sequence('user_id_seq')
             ->setSchema('new_schema');
 
-        $this->assertAlterSequenceSchemaQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq SET SCHEMA new_schema'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq SET SCHEMA new_schema',
+            $builder->toSql()
         );
     }
 
@@ -278,9 +280,9 @@ public function test_alter_sequence_set_schema_if_exists() : void
             ->withIfExists()
             ->setSchema('new_schema');
 
-        $this->assertAlterSequenceSchemaQuery(
-            $builder,
-            'ALTER SEQUENCE IF EXISTS user_id_seq SET SCHEMA new_schema'
+        self::assertSame(
+            'ALTER SEQUENCE IF EXISTS user_id_seq SET SCHEMA new_schema',
+            $builder->toSql()
         );
     }
 
@@ -289,9 +291,9 @@ public function test_alter_sequence_set_unlogged() : void
         $builder = alter()->sequence('user_id_seq')
             ->setUnlogged();
 
-        $this->assertAlterSequenceLoggingQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq SET UNLOGGED'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq SET UNLOGGED',
+            $builder->toSql()
         );
     }
 
@@ -300,9 +302,9 @@ public function test_alter_sequence_start_with() : void
         $builder = alter()->sequence('user_id_seq')
             ->startWith(100);
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE user_id_seq START 100'
+        self::assertSame(
+            'ALTER SEQUENCE user_id_seq START 100',
+            $builder->toSql()
         );
     }
 
@@ -311,9 +313,9 @@ public function test_alter_sequence_with_schema() : void
         $builder = alter()->sequence('user_id_seq', 'public')
             ->incrementBy(10);
 
-        $this->assertAlterSequenceQuery(
-            $builder,
-            'ALTER SEQUENCE public.user_id_seq INCREMENT 10'
+        self::assertSame(
+            'ALTER SEQUENCE public.user_id_seq INCREMENT 10',
+            $builder->toSql()
         );
     }
 
@@ -321,9 +323,9 @@ public function test_create_sequence_if_not_exists() : void
     {
         $builder = create()->sequence('user_id_seq')->ifNotExists();
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE IF NOT EXISTS user_id_seq'
+        self::assertSame(
+            'CREATE SEQUENCE IF NOT EXISTS user_id_seq',
+            $builder->toSql()
         );
     }
 
@@ -331,9 +333,9 @@ public function test_create_sequence_simple() : void
     {
         $builder = create()->sequence('user_id_seq');
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq',
+            $builder->toSql()
         );
     }
 
@@ -348,9 +350,9 @@ public function test_create_sequence_with_all_options() : void
             ->cache(1)
             ->noCycle();
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq AS bigint START 1 INCREMENT 1 MINVALUE 1 MAXVALUE 1000000 CACHE 1 NO CYCLE'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq AS bigint START 1 INCREMENT 1 MINVALUE 1 MAXVALUE 1000000 CACHE 1 NO CYCLE',
+            $builder->toSql()
         );
     }
 
@@ -359,9 +361,9 @@ public function test_create_sequence_with_as_type() : void
         $builder = create()->sequence('user_id_seq')
             ->asType('bigint');
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq AS bigint'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq AS bigint',
+            $builder->toSql()
         );
     }
 
@@ -370,9 +372,9 @@ public function test_create_sequence_with_cache() : void
         $builder = create()->sequence('user_id_seq')
             ->cache(20);
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq CACHE 20'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq CACHE 20',
+            $builder->toSql()
         );
     }
 
@@ -381,9 +383,9 @@ public function test_create_sequence_with_cycle() : void
         $builder = create()->sequence('user_id_seq')
             ->cycle();
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq CYCLE'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq CYCLE',
+            $builder->toSql()
         );
     }
 
@@ -392,9 +394,9 @@ public function test_create_sequence_with_increment() : void
         $builder = create()->sequence('user_id_seq')
             ->incrementBy(10);
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq INCREMENT 10'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq INCREMENT 10',
+            $builder->toSql()
         );
     }
 
@@ -403,9 +405,9 @@ public function test_create_sequence_with_max_value() : void
         $builder = create()->sequence('user_id_seq')
             ->maxValue(9999999);
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq MAXVALUE 9999999'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq MAXVALUE 9999999',
+            $builder->toSql()
         );
     }
 
@@ -414,9 +416,9 @@ public function test_create_sequence_with_min_value() : void
         $builder = create()->sequence('user_id_seq')
             ->minValue(1);
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq MINVALUE 1'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq MINVALUE 1',
+            $builder->toSql()
         );
     }
 
@@ -425,9 +427,9 @@ public function test_create_sequence_with_no_cycle() : void
         $builder = create()->sequence('user_id_seq')
             ->noCycle();
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq NO CYCLE'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq NO CYCLE',
+            $builder->toSql()
         );
     }
 
@@ -436,9 +438,9 @@ public function test_create_sequence_with_no_max_value() : void
         $builder = create()->sequence('user_id_seq')
             ->noMaxValue();
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq NO MAXVALUE'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq NO MAXVALUE',
+            $builder->toSql()
         );
     }
 
@@ -447,9 +449,9 @@ public function test_create_sequence_with_no_min_value() : void
         $builder = create()->sequence('user_id_seq')
             ->noMinValue();
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq NO MINVALUE'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq NO MINVALUE',
+            $builder->toSql()
         );
     }
 
@@ -458,9 +460,9 @@ public function test_create_sequence_with_owned_by() : void
         $builder = create()->sequence('user_id_seq')
             ->ownedBy('users', 'id');
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq OWNED BY users.id'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq OWNED BY users.id',
+            $builder->toSql()
         );
     }
 
@@ -469,9 +471,9 @@ public function test_create_sequence_with_owned_by_none() : void
         $builder = create()->sequence('user_id_seq')
             ->ownedByNone();
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq OWNED BY "none"'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq OWNED BY "none"',
+            $builder->toSql()
         );
     }
 
@@ -480,9 +482,9 @@ public function test_create_sequence_with_owned_by_schema_qualified() : void
         $builder = create()->sequence('user_id_seq')
             ->ownedBy('public.users', 'id');
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq OWNED BY public.users.id'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq OWNED BY public.users.id',
+            $builder->toSql()
         );
     }
 
@@ -490,9 +492,9 @@ public function test_create_sequence_with_schema() : void
     {
         $builder = create()->sequence('user_id_seq', 'public');
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE public.user_id_seq'
+        self::assertSame(
+            'CREATE SEQUENCE public.user_id_seq',
+            $builder->toSql()
         );
     }
 
@@ -501,9 +503,9 @@ public function test_create_sequence_with_start_value() : void
         $builder = create()->sequence('user_id_seq')
             ->startWith(100);
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE SEQUENCE user_id_seq START 100'
+        self::assertSame(
+            'CREATE SEQUENCE user_id_seq START 100',
+            $builder->toSql()
         );
     }
 
@@ -511,9 +513,9 @@ public function test_create_temporary_sequence() : void
     {
         $builder = create()->sequence('temp_seq')->temporary();
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE TEMPORARY SEQUENCE temp_seq'
+        self::assertSame(
+            'CREATE TEMPORARY SEQUENCE temp_seq',
+            $builder->toSql()
         );
     }
 
@@ -521,9 +523,9 @@ public function test_create_unlogged_sequence() : void
     {
         $builder = create()->sequence('fast_seq')->unlogged();
 
-        $this->assertCreateSequenceQuery(
-            $builder,
-            'CREATE UNLOGGED SEQUENCE fast_seq'
+        self::assertSame(
+            'CREATE UNLOGGED SEQUENCE fast_seq',
+            $builder->toSql()
         );
     }
 
@@ -532,9 +534,9 @@ public function test_drop_sequence_cascade() : void
         $builder = drop()->sequence('user_id_seq')
             ->cascade();
 
-        $this->assertDropSequenceQuery(
-            $builder,
-            'DROP SEQUENCE user_id_seq CASCADE'
+        self::assertSame(
+            'DROP SEQUENCE user_id_seq CASCADE',
+            $builder->toSql()
         );
     }
 
@@ -542,9 +544,9 @@ public function test_drop_sequence_if_exists() : void
     {
         $builder = drop()->sequence('user_id_seq')->ifExists();
 
-        $this->assertDropSequenceQuery(
-            $builder,
-            'DROP SEQUENCE IF EXISTS user_id_seq'
+        self::assertSame(
+            'DROP SEQUENCE IF EXISTS user_id_seq',
+            $builder->toSql()
         );
     }
 
@@ -554,9 +556,9 @@ public function test_drop_sequence_if_exists_cascade() : void
             ->ifExists()
             ->cascade();
 
-        $this->assertDropSequenceQuery(
-            $builder,
-            'DROP SEQUENCE IF EXISTS user_id_seq CASCADE'
+        self::assertSame(
+            'DROP SEQUENCE IF EXISTS user_id_seq CASCADE',
+            $builder->toSql()
         );
     }
 
@@ -564,9 +566,9 @@ public function test_drop_sequence_multiple() : void
     {
         $builder = drop()->sequence('user_id_seq', 'order_id_seq', 'product_id_seq');
 
-        $this->assertDropSequenceQuery(
-            $builder,
-            'DROP SEQUENCE user_id_seq, order_id_seq, product_id_seq'
+        self::assertSame(
+            'DROP SEQUENCE user_id_seq, order_id_seq, product_id_seq',
+            $builder->toSql()
         );
     }
 
@@ -575,9 +577,9 @@ public function test_drop_sequence_restrict() : void
         $builder = drop()->sequence('user_id_seq')
             ->restrict();
 
-        $this->assertDropSequenceQuery(
-            $builder,
-            'DROP SEQUENCE user_id_seq'
+        self::assertSame(
+            'DROP SEQUENCE user_id_seq',
+            $builder->toSql()
         );
     }
 
@@ -585,9 +587,9 @@ public function test_drop_sequence_simple() : void
     {
         $builder = drop()->sequence('user_id_seq');
 
-        $this->assertDropSequenceQuery(
-            $builder,
-            'DROP SEQUENCE user_id_seq'
+        self::assertSame(
+            'DROP SEQUENCE user_id_seq',
+            $builder->toSql()
         );
     }
 
@@ -595,9 +597,9 @@ public function test_drop_sequence_with_schema() : void
     {
         $builder = drop()->sequence('public.user_id_seq');
 
-        $this->assertDropSequenceQuery(
-            $builder,
-            'DROP SEQUENCE public.user_id_seq'
+        self::assertSame(
+            'DROP SEQUENCE public.user_id_seq',
+            $builder->toSql()
         );
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateTable/CreateTableBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateTable/CreateTableBuilderTest.php
index 7fcace30fc..c3b1226ee3 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateTable/CreateTableBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateTable/CreateTableBuilderTest.php
@@ -5,7 +5,7 @@
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\CreateTable;
 
 use Flow\PostgreSql\Protobuf\AST\{CreateStmt, PartitionStrategy};
-use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, DataType};
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnDefinition, ColumnType};
 use Flow\PostgreSql\QueryBuilder\Schema\Constraint\{ForeignKeyConstraint, PrimaryKeyConstraint, UniqueConstraint};
 use Flow\PostgreSql\QueryBuilder\Schema\CreateTable\CreateTableBuilder;
 use PHPUnit\Framework\TestCase;
@@ -22,7 +22,7 @@ protected function setUp() : void
     public function test_create_table_if_not_exists() : void
     {
         $builder = CreateTableBuilder::create('users')
-            ->column(ColumnDefinition::create('id', DataType::integer()))
+            ->column(ColumnDefinition::create('id', ColumnType::integer()))
             ->ifNotExists();
 
         $ast = $builder->toAst();
@@ -34,7 +34,7 @@ public function test_create_table_if_not_exists() : void
     public function test_create_table_inherits() : void
     {
         $builder = CreateTableBuilder::create('employees')
-            ->column(ColumnDefinition::create('department', DataType::text()))
+            ->column(ColumnDefinition::create('department', ColumnType::text()))
             ->inherits('persons');
 
         $ast = $builder->toAst();
@@ -47,7 +47,7 @@ public function test_create_table_inherits() : void
     public function test_create_table_inherits_multiple() : void
     {
         $builder = CreateTableBuilder::create('employees')
-            ->column(ColumnDefinition::create('department', DataType::text()))
+            ->column(ColumnDefinition::create('department', ColumnType::text()))
             ->inherits('persons', 'contacts');
 
         $ast = $builder->toAst();
@@ -59,7 +59,7 @@ public function test_create_table_inherits_multiple() : void
     public function test_create_table_partition_by_hash() : void
     {
         $builder = CreateTableBuilder::create('orders')
-            ->column(ColumnDefinition::create('id', DataType::integer()))
+            ->column(ColumnDefinition::create('id', ColumnType::integer()))
             ->partitionByHash('id');
 
         $ast = $builder->toAst();
@@ -72,7 +72,7 @@ public function test_create_table_partition_by_hash() : void
     public function test_create_table_partition_by_list() : void
     {
         $builder = CreateTableBuilder::create('sales')
-            ->column(ColumnDefinition::create('region', DataType::text()))
+            ->column(ColumnDefinition::create('region', ColumnType::text()))
             ->partitionByList('region');
 
         $ast = $builder->toAst();
@@ -86,7 +86,7 @@ public function test_create_table_partition_by_list() : void
     public function test_create_table_partition_by_range() : void
     {
         $builder = CreateTableBuilder::create('logs')
-            ->column(ColumnDefinition::create('created_at', DataType::timestamp()))
+            ->column(ColumnDefinition::create('created_at', ColumnType::timestamp()))
             ->partitionByRange('created_at');
 
         $ast = $builder->toAst();
@@ -99,7 +99,7 @@ public function test_create_table_partition_by_range() : void
     public function test_create_table_tablespace() : void
     {
         $builder = CreateTableBuilder::create('users')
-            ->column(ColumnDefinition::create('id', DataType::integer()))
+            ->column(ColumnDefinition::create('id', ColumnType::integer()))
             ->tablespace('fast_storage');
 
         $ast = $builder->toAst();
@@ -111,7 +111,7 @@ public function test_create_table_tablespace() : void
     public function test_create_table_temporary() : void
     {
         $builder = CreateTableBuilder::create('temp_users')
-            ->column(ColumnDefinition::create('id', DataType::integer()))
+            ->column(ColumnDefinition::create('id', ColumnType::integer()))
             ->temporary();
 
         $ast = $builder->toAst();
@@ -124,7 +124,7 @@ public function test_create_table_temporary() : void
     public function test_create_table_unlogged() : void
     {
         $builder = CreateTableBuilder::create('unlogged_users')
-            ->column(ColumnDefinition::create('id', DataType::integer()))
+            ->column(ColumnDefinition::create('id', ColumnType::integer()))
             ->unlogged();
 
         $ast = $builder->toAst();
@@ -136,8 +136,8 @@ public function test_create_table_unlogged() : void
     public function test_create_table_with_constraint() : void
     {
         $builder = CreateTableBuilder::create('users')
-            ->column(ColumnDefinition::create('id', DataType::integer()))
-            ->column(ColumnDefinition::create('email', DataType::varchar(255)))
+            ->column(ColumnDefinition::create('id', ColumnType::integer()))
+            ->column(ColumnDefinition::create('email', ColumnType::varchar(255)))
             ->constraint(PrimaryKeyConstraint::create('id'))
             ->constraint(UniqueConstraint::create('email'));
 
@@ -152,8 +152,8 @@ public function test_create_table_with_constraint() : void
     public function test_create_table_with_foreign_key_constraint() : void
     {
         $builder = CreateTableBuilder::create('orders')
-            ->column(ColumnDefinition::create('id', DataType::integer()))
-            ->column(ColumnDefinition::create('user_id', DataType::integer()))
+            ->column(ColumnDefinition::create('id', ColumnType::integer()))
+            ->column(ColumnDefinition::create('user_id', ColumnType::integer()))
             ->constraint(ForeignKeyConstraint::create(['user_id'], 'users', ['id']));
 
         $ast = $builder->toAst();
@@ -166,9 +166,9 @@ public function test_create_table_with_foreign_key_constraint() : void
     public function test_create_table_with_multiple_columns() : void
     {
         $builder = CreateTableBuilder::create('users')
-            ->column(ColumnDefinition::create('id', DataType::serial()))
-            ->column(ColumnDefinition::create('name', DataType::varchar(100))->notNull())
-            ->column(ColumnDefinition::create('email', DataType::varchar(255))->unique());
+            ->column(ColumnDefinition::create('id', ColumnType::serial()))
+            ->column(ColumnDefinition::create('name', ColumnType::varchar(100))->notNull())
+            ->column(ColumnDefinition::create('email', ColumnType::varchar(255))->unique());
 
         $ast = $builder->toAst();
 
@@ -179,7 +179,7 @@ public function test_create_table_with_multiple_columns() : void
     public function test_create_table_with_schema() : void
     {
         $builder = CreateTableBuilder::create('users', 'public')
-            ->column(ColumnDefinition::create('id', DataType::integer()));
+            ->column(ColumnDefinition::create('id', ColumnType::integer()));
 
         $ast = $builder->toAst();
 
@@ -191,7 +191,7 @@ public function test_create_table_with_schema() : void
     public function test_immutability() : void
     {
         $original = CreateTableBuilder::create('users')
-            ->column(ColumnDefinition::create('id', DataType::integer()));
+            ->column(ColumnDefinition::create('id', ColumnType::integer()));
         $modified = $original->ifNotExists();
 
         self::assertFalse($original->toAst()->getIfNotExists());
@@ -201,7 +201,7 @@ public function test_immutability() : void
     public function test_simple_create_table() : void
     {
         $builder = CreateTableBuilder::create('users')
-            ->column(ColumnDefinition::create('id', DataType::integer()));
+            ->column(ColumnDefinition::create('id', ColumnType::integer()));
 
         $ast = $builder->toAst();
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateTableAs/CreateTableAsBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateTableAs/CreateTableAsBuilderTest.php
index 26f827e93b..38712eaa72 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateTableAs/CreateTableAsBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/CreateTableAs/CreateTableAsBuilderTest.php
@@ -4,11 +4,12 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\CreateTableAs;
 
+use function Flow\PostgreSql\DSL\{col, literal};
 use Flow\PostgreSql\Protobuf\AST\{CreateTableAsStmt, ObjectType};
-use Flow\PostgreSql\QueryBuilder\Expression\RawExpression;
 use Flow\PostgreSql\QueryBuilder\Schema\CreateTableAs\CreateTableAsBuilder;
 use Flow\PostgreSql\QueryBuilder\Select\SelectBuilder;
 use Flow\PostgreSql\QueryBuilder\Table\Table;
+
 use PHPUnit\Framework\TestCase;
 
 final class CreateTableAsBuilderTest extends TestCase
@@ -23,7 +24,7 @@ protected function setUp() : void
     public function test_create_table_as_if_not_exists() : void
     {
         $select = SelectBuilder::create()
-            ->select(new RawExpression('1'));
+            ->select(literal(1));
 
         $builder = CreateTableAsBuilder::create('new_table', $select)
             ->ifNotExists();
@@ -37,7 +38,7 @@ public function test_create_table_as_if_not_exists() : void
     public function test_create_table_as_with_column_names() : void
     {
         $select = SelectBuilder::create()
-            ->select(new RawExpression('id'), new RawExpression('name'));
+            ->select(col('id'), col('name'));
 
         $builder = CreateTableAsBuilder::create('new_table', $select)
             ->columnNames('user_id', 'user_name');
@@ -53,7 +54,7 @@ public function test_create_table_as_with_column_names() : void
     public function test_create_table_as_with_no_data() : void
     {
         $select = SelectBuilder::create()
-            ->select(new RawExpression('id'), new RawExpression('name'))
+            ->select(col('id'), col('name'))
             ->from(new Table('users'));
 
         $builder = CreateTableAsBuilder::create('users_copy', $select)
@@ -68,7 +69,7 @@ public function test_create_table_as_with_no_data() : void
     public function test_create_table_as_with_schema() : void
     {
         $select = SelectBuilder::create()
-            ->select(new RawExpression('id'), new RawExpression('email'))
+            ->select(col('id'), col('email'))
             ->from(new Table('users'));
 
         $builder = CreateTableAsBuilder::create('new_table', $select, 'archive');
@@ -83,7 +84,7 @@ public function test_create_table_as_with_schema() : void
     public function test_immutability() : void
     {
         $select = SelectBuilder::create()
-            ->select(new RawExpression('1'));
+            ->select(literal(1));
 
         $original = CreateTableAsBuilder::create('new_table', $select);
         $modified = $original->ifNotExists();
@@ -95,7 +96,7 @@ public function test_immutability() : void
     public function test_simple_create_table_as() : void
     {
         $select = SelectBuilder::create()
-            ->select(new RawExpression('id'), new RawExpression('name'))
+            ->select(col('id'), col('name'))
             ->from(new Table('users'));
 
         $builder = CreateTableAsBuilder::create('users_copy', $select);
@@ -111,7 +112,7 @@ public function test_simple_create_table_as() : void
     public function test_with_all_options() : void
     {
         $select = SelectBuilder::create()
-            ->select(new RawExpression('id'), new RawExpression('name'))
+            ->select(col('id'), col('name'))
             ->from(new Table('users'));
 
         $builder = CreateTableAsBuilder::create('users_backup', $select, 'archive')
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Database/CreateDatabaseBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Database/CreateDatabaseBuilderTest.php
new file mode 100644
index 0000000000..19c9d801fa
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Database/CreateDatabaseBuilderTest.php
@@ -0,0 +1,161 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Database;
+
+use function Flow\PostgreSql\DSL\create;
+use Flow\PostgreSql\Protobuf\AST\CreatedbStmt;
+use Flow\PostgreSql\QueryBuilder\Schema\Database\CreateDatabaseBuilder;
+use PHPUnit\Framework\TestCase;
+
+final class CreateDatabaseBuilderTest extends TestCase
+{
+    protected function setUp() : void
+    {
+        if (!\extension_loaded('pg_query')) {
+            self::markTestSkipped('pg_query extension is not loaded.');
+        }
+    }
+
+    public function test_create_database() : void
+    {
+        self::assertSame('CREATE DATABASE mydb', create()->database('mydb')->toSql());
+    }
+
+    public function test_create_database_ast_type() : void
+    {
+        self::assertInstanceOf(CreatedbStmt::class, CreateDatabaseBuilder::create('mydb')->toAst());
+    }
+
+    public function test_create_database_if_not_exists() : void
+    {
+        self::assertSame('CREATE DATABASE mydb IF_NOT_EXISTS 1', create()->database('mydb')->ifNotExists()->toSql());
+    }
+
+    public function test_create_database_if_not_exists_with_options() : void
+    {
+        self::assertSame(
+            'CREATE DATABASE mydb IF_NOT_EXISTS 1 OWNER admin',
+            create()->database('mydb')->ifNotExists()->owner('admin')->toSql()
+        );
+    }
+
+    public function test_create_database_immutability() : void
+    {
+        $original = CreateDatabaseBuilder::create('mydb');
+        $modified = $original->ifNotExists();
+
+        self::assertSame('CREATE DATABASE mydb', $original->toSql());
+        self::assertSame('CREATE DATABASE mydb IF_NOT_EXISTS 1', $modified->toSql());
+    }
+
+    public function test_create_database_sets_name_in_ast() : void
+    {
+        self::assertSame('mydb', CreateDatabaseBuilder::create('mydb')->toAst()->getDbname());
+    }
+
+    public function test_create_database_with_all_options() : void
+    {
+        self::assertSame(
+            'CREATE DATABASE mydb OWNER admin TEMPLATE template0 ENCODING "UTF8" LOCALE "en_US.UTF-8" LC_COLLATE "en_US.UTF-8" LC_CTYPE "en_US.UTF-8" CONNECTION LIMIT 10',
+            create()->database('mydb')
+                ->owner('admin')
+                ->template('template0')
+                ->encoding('UTF8')
+                ->locale('en_US.UTF-8')
+                ->lcCollate('en_US.UTF-8')
+                ->lcCtype('en_US.UTF-8')
+                ->connectionLimit(10)
+                ->toSql()
+        );
+    }
+
+    public function test_create_database_with_allow_connections() : void
+    {
+        self::assertSame('CREATE DATABASE mydb ALLOW_CONNECTIONS 0', create()->database('mydb')->allowConnections(false)->toSql());
+    }
+
+    public function test_create_database_with_allow_connections_true() : void
+    {
+        self::assertSame('CREATE DATABASE mydb ALLOW_CONNECTIONS 1', create()->database('mydb')->allowConnections(true)->toSql());
+    }
+
+    public function test_create_database_with_builtin_locale() : void
+    {
+        self::assertSame('CREATE DATABASE mydb BUILTIN_LOCALE "C"', create()->database('mydb')->builtinLocale('C')->toSql());
+    }
+
+    public function test_create_database_with_collation_version() : void
+    {
+        self::assertSame('CREATE DATABASE mydb COLLATION_VERSION "1.0"', create()->database('mydb')->collationVersion('1.0')->toSql());
+    }
+
+    public function test_create_database_with_connection_limit() : void
+    {
+        self::assertSame('CREATE DATABASE mydb CONNECTION LIMIT 100', create()->database('mydb')->connectionLimit(100)->toSql());
+    }
+
+    public function test_create_database_with_encoding() : void
+    {
+        self::assertSame('CREATE DATABASE mydb ENCODING "UTF8"', create()->database('mydb')->encoding('UTF8')->toSql());
+    }
+
+    public function test_create_database_with_icu_locale() : void
+    {
+        self::assertSame('CREATE DATABASE mydb ICU_LOCALE "en-US"', create()->database('mydb')->icuLocale('en-US')->toSql());
+    }
+
+    public function test_create_database_with_icu_rules() : void
+    {
+        self::assertSame('CREATE DATABASE mydb ICU_RULES "&V << w <<< W"', create()->database('mydb')->icuRules('&V << w <<< W')->toSql());
+    }
+
+    public function test_create_database_with_is_template() : void
+    {
+        self::assertSame('CREATE DATABASE mydb IS_TEMPLATE 1', create()->database('mydb')->isTemplate(true)->toSql());
+    }
+
+    public function test_create_database_with_locale() : void
+    {
+        self::assertSame('CREATE DATABASE mydb LOCALE "en_US.UTF-8"', create()->database('mydb')->locale('en_US.UTF-8')->toSql());
+    }
+
+    public function test_create_database_with_locale_provider() : void
+    {
+        self::assertSame('CREATE DATABASE mydb LOCALE_PROVIDER icu', create()->database('mydb')->localeProvider('icu')->toSql());
+    }
+
+    public function test_create_database_with_multiple_options() : void
+    {
+        self::assertSame(
+            'CREATE DATABASE mydb OWNER admin ENCODING "UTF8" CONNECTION LIMIT 50',
+            create()->database('mydb')->owner('admin')->encoding('UTF8')->connectionLimit(50)->toSql()
+        );
+    }
+
+    public function test_create_database_with_oid() : void
+    {
+        self::assertSame('CREATE DATABASE mydb OID 12345', create()->database('mydb')->oid(12345)->toSql());
+    }
+
+    public function test_create_database_with_owner() : void
+    {
+        self::assertSame('CREATE DATABASE mydb OWNER admin', create()->database('mydb')->owner('admin')->toSql());
+    }
+
+    public function test_create_database_with_strategy() : void
+    {
+        self::assertSame('CREATE DATABASE mydb STRATEGY wal_log', create()->database('mydb')->strategy('wal_log')->toSql());
+    }
+
+    public function test_create_database_with_tablespace() : void
+    {
+        self::assertSame('CREATE DATABASE mydb TABLESPACE fast_ssd', create()->database('mydb')->tablespace('fast_ssd')->toSql());
+    }
+
+    public function test_create_database_with_template() : void
+    {
+        self::assertSame('CREATE DATABASE mydb TEMPLATE template0', create()->database('mydb')->template('template0')->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Database/DropDatabaseBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Database/DropDatabaseBuilderTest.php
new file mode 100644
index 0000000000..b800ccc487
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Database/DropDatabaseBuilderTest.php
@@ -0,0 +1,84 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Database;
+
+use function Flow\PostgreSql\DSL\drop;
+use Flow\PostgreSql\Protobuf\AST\DropdbStmt;
+use Flow\PostgreSql\QueryBuilder\Schema\Database\DropDatabaseBuilder;
+use PHPUnit\Framework\TestCase;
+
+final class DropDatabaseBuilderTest extends TestCase
+{
+    protected function setUp() : void
+    {
+        if (!\extension_loaded('pg_query')) {
+            self::markTestSkipped('pg_query extension is not loaded.');
+        }
+    }
+
+    public function test_drop_database() : void
+    {
+        self::assertSame('DROP DATABASE mydb', drop()->database('mydb')->toSql());
+    }
+
+    public function test_drop_database_ast_type() : void
+    {
+        self::assertInstanceOf(DropdbStmt::class, DropDatabaseBuilder::create('mydb')->toAst());
+    }
+
+    public function test_drop_database_force() : void
+    {
+        self::assertSame('DROP DATABASE mydb (FORCE)', drop()->database('mydb')->force()->toSql());
+    }
+
+    public function test_drop_database_force_sets_option_in_ast() : void
+    {
+        $ast = DropDatabaseBuilder::create('mydb')->force()->toAst();
+
+        self::assertCount(1, $ast->getOptions());
+
+        $defElem = $ast->getOptions()[0]->getDefElem();
+        self::assertNotNull($defElem);
+        self::assertSame('force', $defElem->getDefname());
+    }
+
+    public function test_drop_database_if_exists() : void
+    {
+        self::assertSame('DROP DATABASE IF EXISTS mydb', drop()->database('mydb')->ifExists()->toSql());
+    }
+
+    public function test_drop_database_if_exists_sets_missing_ok_in_ast() : void
+    {
+        self::assertTrue(DropDatabaseBuilder::create('mydb')->ifExists()->toAst()->getMissingOk());
+    }
+
+    public function test_drop_database_if_exists_with_force() : void
+    {
+        self::assertSame('DROP DATABASE IF EXISTS mydb (FORCE)', drop()->database('mydb')->ifExists()->force()->toSql());
+    }
+
+    public function test_drop_database_immutability() : void
+    {
+        $original = DropDatabaseBuilder::create('mydb');
+        $modified = $original->ifExists();
+
+        self::assertFalse($original->toAst()->getMissingOk());
+        self::assertTrue($modified->toAst()->getMissingOk());
+    }
+
+    public function test_drop_database_immutability_force() : void
+    {
+        $original = DropDatabaseBuilder::create('mydb');
+        $withForce = $original->force();
+
+        self::assertCount(0, $original->toAst()->getOptions());
+        self::assertCount(1, $withForce->toAst()->getOptions());
+    }
+
+    public function test_drop_database_sets_name_in_ast() : void
+    {
+        self::assertSame('mydb', DropDatabaseBuilder::create('mydb')->toAst()->getDbname());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Domain/DomainBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Domain/DomainBuilderTest.php
index 4089bf7219..7c03b92f6e 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Domain/DomainBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Domain/DomainBuilderTest.php
@@ -4,8 +4,11 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Domain;
 
-use function Flow\PostgreSql\DSL\data_type_text;
+use function Flow\PostgreSql\DSL\{alter, col, column_type_text, create, drop, literal};
+
 use Flow\PostgreSql\Protobuf\AST\{AlterDomainStmt, ConstrType, CreateDomainStmt, DropBehavior, DropStmt, ObjectType};
+use Flow\PostgreSql\QueryBuilder\Condition\OperatorCondition;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 use Flow\PostgreSql\QueryBuilder\Schema\Domain\{AlterDomainBuilder, CreateDomainBuilder, DropDomainBuilder};
 
 use PHPUnit\Framework\TestCase;
@@ -22,7 +25,7 @@ protected function setUp() : void
     public function test_alter_domain_add_constraint() : void
     {
         $builder = AlterDomainBuilder::create('email')
-            ->addConstraint('valid_email', "VALUE ~ '^.+@.+$'");
+            ->addConstraint('valid_email', new OperatorCondition(col('VALUE'), '~', literal('^.+@.+$')));
 
         $ast = $builder->toAst();
 
@@ -62,6 +65,17 @@ public function test_alter_domain_drop_constraint() : void
         self::assertSame('valid_email', $ast->getName());
     }
 
+    public function test_alter_domain_drop_constraint_cascade_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER DOMAIN email DROP CONSTRAINT valid_email CASCADE',
+            alter()->domain('email')
+                ->dropConstraint('valid_email')
+                ->cascade()
+                ->toSql()
+        );
+    }
+
     public function test_alter_domain_drop_default() : void
     {
         $builder = AlterDomainBuilder::create('email')
@@ -96,7 +110,7 @@ public function test_alter_domain_restrict() : void
     public function test_alter_domain_set_default() : void
     {
         $builder = AlterDomainBuilder::create('email')
-            ->setDefault("'default@example.com'");
+            ->setDefault(literal('default@example.com'));
 
         $ast = $builder->toAst();
 
@@ -128,7 +142,7 @@ public function test_alter_domain_validate_constraint() : void
     public function test_create_domain_ast_type() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text());
+            ->as(column_type_text());
 
         $ast = $builder->toAst();
 
@@ -138,7 +152,7 @@ public function test_create_domain_ast_type() : void
     public function test_create_domain_sets_name() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text());
+            ->as(column_type_text());
 
         $ast = $builder->toAst();
         $domainname = $ast->getDomainname();
@@ -149,7 +163,7 @@ public function test_create_domain_sets_name() : void
     public function test_create_domain_sets_type() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text());
+            ->as(column_type_text());
 
         $ast = $builder->toAst();
         $typeName = $ast->getTypeName();
@@ -158,11 +172,21 @@ public function test_create_domain_sets_type() : void
         self::assertCount(2, $typeName->getNames());
     }
 
+    public function test_create_domain_simple_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE DOMAIN email AS pg_catalog.text',
+            create()->domain('email')
+                ->as(ColumnType::text())
+                ->toSql()
+        );
+    }
+
     public function test_create_domain_with_check() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text())
-            ->check("VALUE ~ '^.+@.+$'");
+            ->as(column_type_text())
+            ->check(new OperatorCondition(col('VALUE'), '~', literal('^.+@.+$')));
 
         $ast = $builder->toAst();
         $constraints = $ast->getConstraints();
@@ -177,7 +201,7 @@ public function test_create_domain_with_check() : void
     public function test_create_domain_with_collation() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text())
+            ->as(column_type_text())
             ->collate('en_US');
 
         $ast = $builder->toAst();
@@ -188,8 +212,8 @@ public function test_create_domain_with_collation() : void
     public function test_create_domain_with_default() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text())
-            ->default("'default@example.com'");
+            ->as(column_type_text())
+            ->default(literal('default@example.com'));
 
         $ast = $builder->toAst();
         $constraints = $ast->getConstraints();
@@ -204,9 +228,9 @@ public function test_create_domain_with_default() : void
     public function test_create_domain_with_multiple_constraints() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text())
+            ->as(column_type_text())
             ->notNull()
-            ->check("VALUE ~ '^.+@.+$'");
+            ->check(new OperatorCondition(col('VALUE'), '~', literal('^.+@.+$')));
 
         $ast = $builder->toAst();
         $constraints = $ast->getConstraints();
@@ -217,9 +241,9 @@ public function test_create_domain_with_multiple_constraints() : void
     public function test_create_domain_with_named_constraint() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text())
+            ->as(column_type_text())
             ->constraint('valid_email')
-            ->check("VALUE ~ '^.+@.+$'");
+            ->check(new OperatorCondition(col('VALUE'), '~', literal('^.+@.+$')));
 
         $ast = $builder->toAst();
         $constraints = $ast->getConstraints();
@@ -234,7 +258,7 @@ public function test_create_domain_with_named_constraint() : void
     public function test_create_domain_with_not_null() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text())
+            ->as(column_type_text())
             ->notNull();
 
         $ast = $builder->toAst();
@@ -250,7 +274,7 @@ public function test_create_domain_with_not_null() : void
     public function test_create_domain_with_null() : void
     {
         $builder = CreateDomainBuilder::create('email')
-            ->as(data_type_text())
+            ->as(column_type_text())
             ->null();
 
         $ast = $builder->toAst();
@@ -266,7 +290,7 @@ public function test_create_domain_with_null() : void
     public function test_create_domain_with_schema() : void
     {
         $builder = CreateDomainBuilder::create('public.email')
-            ->as(data_type_text());
+            ->as(column_type_text());
 
         $ast = $builder->toAst();
         $domainname = $ast->getDomainname();
@@ -304,6 +328,17 @@ public function test_drop_domain_if_exists() : void
         self::assertTrue($ast->getMissingOk());
     }
 
+    public function test_drop_domain_if_exists_cascade_to_sql() : void
+    {
+        self::assertSame(
+            'DROP DOMAIN IF EXISTS email CASCADE',
+            drop()->domain('email')
+                ->ifExists()
+                ->cascade()
+                ->toSql()
+        );
+    }
+
     public function test_drop_domain_immutability() : void
     {
         $original = DropDomainBuilder::create('email');
@@ -322,6 +357,15 @@ public function test_drop_domain_multiple_domains() : void
         self::assertCount(3, $ast->getObjects());
     }
 
+    public function test_drop_domain_multiple_to_sql() : void
+    {
+        self::assertSame(
+            'DROP DOMAIN email, phone, url',
+            drop()->domain('email', 'phone', 'url')
+                ->toSql()
+        );
+    }
+
     public function test_drop_domain_restrict() : void
     {
         $builder = DropDomainBuilder::create('email')
@@ -331,4 +375,13 @@ public function test_drop_domain_restrict() : void
 
         self::assertSame(DropBehavior::DROP_RESTRICT, $ast->getBehavior());
     }
+
+    public function test_drop_domain_simple_to_sql() : void
+    {
+        self::assertSame(
+            'DROP DOMAIN email',
+            drop()->domain('email')
+                ->toSql()
+        );
+    }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Extension/ExtensionBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Extension/ExtensionBuilderTest.php
index 3f569a211a..9d5ff23c39 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Extension/ExtensionBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Extension/ExtensionBuilderTest.php
@@ -4,6 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Extension;
 
+use function Flow\PostgreSql\DSL\{alter, create, drop};
 use Flow\PostgreSql\Protobuf\AST\{AlterExtensionContentsStmt, AlterExtensionStmt, CreateExtensionStmt, DropBehavior, DropStmt, ObjectType};
 use Flow\PostgreSql\QueryBuilder\Schema\Extension\{AlterExtensionBuilder, CreateExtensionBuilder, DropExtensionBuilder};
 use PHPUnit\Framework\TestCase;
@@ -29,6 +30,11 @@ public function test_alter_extension_add_function_ast_type() : void
         self::assertSame(1, $ast->getAction());
     }
 
+    public function test_alter_extension_add_function_to_sql() : void
+    {
+        self::assertSame('ALTER EXTENSION postgis ADD FUNCTION st_distance', alter()->extension('postgis')->addFunction('st_distance')->toSql());
+    }
+
     public function test_alter_extension_add_table_ast_type() : void
     {
         $builder = AlterExtensionBuilder::create('postgis')
@@ -41,6 +47,11 @@ public function test_alter_extension_add_table_ast_type() : void
         self::assertSame(1, $ast->getAction());
     }
 
+    public function test_alter_extension_add_table_to_sql() : void
+    {
+        self::assertSame('ALTER EXTENSION postgis ADD TABLE spatial_ref_sys', alter()->extension('postgis')->addTable('spatial_ref_sys')->toSql());
+    }
+
     public function test_alter_extension_drop_function_ast_type() : void
     {
         $builder = AlterExtensionBuilder::create('postgis')
@@ -53,6 +64,11 @@ public function test_alter_extension_drop_function_ast_type() : void
         self::assertSame(-1, $ast->getAction());
     }
 
+    public function test_alter_extension_drop_function_to_sql() : void
+    {
+        self::assertSame('ALTER EXTENSION postgis DROP FUNCTION st_distance', alter()->extension('postgis')->dropFunction('st_distance')->toSql());
+    }
+
     public function test_alter_extension_drop_table_ast_type() : void
     {
         $builder = AlterExtensionBuilder::create('postgis')
@@ -65,6 +81,11 @@ public function test_alter_extension_drop_table_ast_type() : void
         self::assertSame(-1, $ast->getAction());
     }
 
+    public function test_alter_extension_drop_table_to_sql() : void
+    {
+        self::assertSame('ALTER EXTENSION postgis DROP TABLE spatial_ref_sys', alter()->extension('postgis')->dropTable('spatial_ref_sys')->toSql());
+    }
+
     public function test_alter_extension_update_ast_type() : void
     {
         $builder = AlterExtensionBuilder::create('postgis')
@@ -103,6 +124,16 @@ public function test_alter_extension_update_to_sets_version() : void
         self::assertSame('new_version', $defElem->getDefname());
     }
 
+    public function test_alter_extension_update_to_sql() : void
+    {
+        self::assertSame('ALTER EXTENSION postgis UPDATE', alter()->extension('postgis')->update()->toSql());
+    }
+
+    public function test_alter_extension_update_to_version_to_sql() : void
+    {
+        self::assertSame('ALTER EXTENSION postgis UPDATE TO "3.1"', alter()->extension('postgis')->updateTo('3.1')->toSql());
+    }
+
     public function test_create_extension_ast_type() : void
     {
         $builder = CreateExtensionBuilder::create('uuid-ossp');
@@ -127,6 +158,11 @@ public function test_create_extension_cascade_sets_option() : void
         self::assertSame('cascade', $defElem->getDefname());
     }
 
+    public function test_create_extension_full_to_sql() : void
+    {
+        self::assertSame('CREATE EXTENSION IF NOT EXISTS postgis SCHEMA public VERSION "3.0" CASCADE', create()->extension('postgis')->ifNotExists()->schema('public')->version('3.0')->cascade()->toSql());
+    }
+
     public function test_create_extension_if_not_exists_sets_flag() : void
     {
         $builder = CreateExtensionBuilder::create('postgis')
@@ -137,6 +173,11 @@ public function test_create_extension_if_not_exists_sets_flag() : void
         self::assertTrue($ast->getIfNotExists());
     }
 
+    public function test_create_extension_if_not_exists_to_sql() : void
+    {
+        self::assertSame('CREATE EXTENSION IF NOT EXISTS postgis', create()->extension('postgis')->ifNotExists()->toSql());
+    }
+
     public function test_create_extension_immutability() : void
     {
         $original = CreateExtensionBuilder::create('postgis');
@@ -170,6 +211,11 @@ public function test_create_extension_sets_name() : void
         self::assertSame('postgis', $ast->getExtname());
     }
 
+    public function test_create_extension_simple_to_sql() : void
+    {
+        self::assertSame('CREATE EXTENSION "uuid-ossp"', create()->extension('uuid-ossp')->toSql());
+    }
+
     public function test_create_extension_version_sets_option() : void
     {
         $builder = CreateExtensionBuilder::create('postgis')
@@ -185,6 +231,21 @@ public function test_create_extension_version_sets_option() : void
         self::assertSame('new_version', $defElem->getDefname());
     }
 
+    public function test_create_extension_with_cascade_to_sql() : void
+    {
+        self::assertSame('CREATE EXTENSION postgis CASCADE', create()->extension('postgis')->cascade()->toSql());
+    }
+
+    public function test_create_extension_with_schema_to_sql() : void
+    {
+        self::assertSame('CREATE EXTENSION postgis SCHEMA public', create()->extension('postgis')->schema('public')->toSql());
+    }
+
+    public function test_create_extension_with_version_to_sql() : void
+    {
+        self::assertSame('CREATE EXTENSION postgis VERSION "3.0"', create()->extension('postgis')->version('3.0')->toSql());
+    }
+
     public function test_drop_extension_ast_type() : void
     {
         $builder = DropExtensionBuilder::create('postgis');
@@ -205,6 +266,16 @@ public function test_drop_extension_cascade_sets_behavior() : void
         self::assertSame(DropBehavior::DROP_CASCADE, $ast->getBehavior());
     }
 
+    public function test_drop_extension_cascade_to_sql() : void
+    {
+        self::assertSame('DROP EXTENSION postgis CASCADE', drop()->extension('postgis')->cascade()->toSql());
+    }
+
+    public function test_drop_extension_if_exists_cascade_to_sql() : void
+    {
+        self::assertSame('DROP EXTENSION IF EXISTS postgis CASCADE', drop()->extension('postgis')->ifExists()->cascade()->toSql());
+    }
+
     public function test_drop_extension_if_exists_sets_flag() : void
     {
         $builder = DropExtensionBuilder::create('postgis')
@@ -215,6 +286,11 @@ public function test_drop_extension_if_exists_sets_flag() : void
         self::assertTrue($ast->getMissingOk());
     }
 
+    public function test_drop_extension_if_exists_to_sql() : void
+    {
+        self::assertSame('DROP EXTENSION IF EXISTS postgis', drop()->extension('postgis')->ifExists()->toSql());
+    }
+
     public function test_drop_extension_immutability() : void
     {
         $original = DropExtensionBuilder::create('postgis');
@@ -233,6 +309,11 @@ public function test_drop_extension_multiple_extensions() : void
         self::assertCount(3, $ast->getObjects());
     }
 
+    public function test_drop_extension_multiple_to_sql() : void
+    {
+        self::assertSame('DROP EXTENSION postgis, pg_trgm, "uuid-ossp"', drop()->extension('postgis', 'pg_trgm', 'uuid-ossp')->toSql());
+    }
+
     public function test_drop_extension_restrict_sets_behavior() : void
     {
         $builder = DropExtensionBuilder::create('postgis')
@@ -243,6 +324,11 @@ public function test_drop_extension_restrict_sets_behavior() : void
         self::assertSame(DropBehavior::DROP_RESTRICT, $ast->getBehavior());
     }
 
+    public function test_drop_extension_restrict_to_sql() : void
+    {
+        self::assertSame('DROP EXTENSION postgis', drop()->extension('postgis')->restrict()->toSql());
+    }
+
     public function test_drop_extension_sets_name() : void
     {
         $builder = DropExtensionBuilder::create('postgis');
@@ -251,4 +337,9 @@ public function test_drop_extension_sets_name() : void
 
         self::assertCount(1, $ast->getObjects());
     }
+
+    public function test_drop_extension_simple_to_sql() : void
+    {
+        self::assertSame('DROP EXTENSION postgis', drop()->extension('postgis')->toSql());
+    }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Function/FunctionArgumentTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Function/FunctionArgumentTest.php
index c8f17d57e6..0a4fd9a854 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Function/FunctionArgumentTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Function/FunctionArgumentTest.php
@@ -4,7 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Function;
 
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 use Flow\PostgreSql\QueryBuilder\Schema\Function\{ArgumentMode, FunctionArgument};
 use PHPUnit\Framework\Attributes\Test;
 use PHPUnit\Framework\TestCase;
@@ -14,9 +14,9 @@ final class FunctionArgumentTest extends TestCase
     #[Test]
     public function test_function_argument_basic() : void
     {
-        $arg = FunctionArgument::of(DataType::integer());
+        $arg = FunctionArgument::of(ColumnType::integer());
 
-        self::assertInstanceOf(DataType::class, $arg->type);
+        self::assertInstanceOf(ColumnType::class, $arg->type);
         self::assertNull($arg->name);
         self::assertSame(ArgumentMode::IN, $arg->mode);
         self::assertNull($arg->default);
@@ -25,7 +25,7 @@ public function test_function_argument_basic() : void
     #[Test]
     public function test_function_argument_in_mode() : void
     {
-        $arg = FunctionArgument::of(DataType::text())->in();
+        $arg = FunctionArgument::of(ColumnType::text())->in();
 
         self::assertSame(ArgumentMode::IN, $arg->mode);
     }
@@ -33,7 +33,7 @@ public function test_function_argument_in_mode() : void
     #[Test]
     public function test_function_argument_inout_mode() : void
     {
-        $arg = FunctionArgument::of(DataType::text())->inout();
+        $arg = FunctionArgument::of(ColumnType::text())->inout();
 
         self::assertSame(ArgumentMode::INOUT, $arg->mode);
     }
@@ -41,16 +41,16 @@ public function test_function_argument_inout_mode() : void
     #[Test]
     public function test_function_argument_named() : void
     {
-        $arg = FunctionArgument::of(DataType::text())->named('username');
+        $arg = FunctionArgument::of(ColumnType::text())->named('username');
 
         self::assertSame('username', $arg->name);
-        self::assertInstanceOf(DataType::class, $arg->type);
+        self::assertInstanceOf(ColumnType::class, $arg->type);
     }
 
     #[Test]
     public function test_function_argument_out_mode() : void
     {
-        $arg = FunctionArgument::of(DataType::integer())->out();
+        $arg = FunctionArgument::of(ColumnType::integer())->out();
 
         self::assertSame(ArgumentMode::OUT, $arg->mode);
     }
@@ -58,7 +58,7 @@ public function test_function_argument_out_mode() : void
     #[Test]
     public function test_function_argument_variadic_mode() : void
     {
-        $arg = FunctionArgument::of(DataType::text())->variadic();
+        $arg = FunctionArgument::of(ColumnType::text())->variadic();
 
         self::assertSame(ArgumentMode::VARIADIC, $arg->mode);
     }
@@ -66,7 +66,7 @@ public function test_function_argument_variadic_mode() : void
     #[Test]
     public function test_function_argument_with_default() : void
     {
-        $arg = FunctionArgument::of(DataType::integer())->default('0');
+        $arg = FunctionArgument::of(ColumnType::integer())->default('0');
 
         self::assertSame('0', $arg->default);
     }
@@ -74,12 +74,12 @@ public function test_function_argument_with_default() : void
     #[Test]
     public function test_function_argument_with_mode_and_name_and_default() : void
     {
-        $arg = FunctionArgument::of(DataType::text())
+        $arg = FunctionArgument::of(ColumnType::text())
             ->named('value')
             ->out()
             ->default('null');
 
-        self::assertInstanceOf(DataType::class, $arg->type);
+        self::assertInstanceOf(ColumnType::class, $arg->type);
         self::assertSame('value', $arg->name);
         self::assertSame(ArgumentMode::OUT, $arg->mode);
         self::assertSame('null', $arg->default);
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/FunctionBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Function/FunctionBuilderTest.php
similarity index 58%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/FunctionBuilderTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Function/FunctionBuilderTest.php
index 62b4b187b4..e7d607c73c 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/FunctionBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Function/FunctionBuilderTest.php
@@ -2,118 +2,119 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Function;
 
-use function Flow\PostgreSql\DSL\{alter, call, create, data_type_integer, data_type_text, do_block, drop, func_arg};
+use function Flow\PostgreSql\DSL\{alter, call, column_type_integer, column_type_text, create, do_block, drop, func_arg};
 use Flow\PostgreSql\QueryBuilder\Schema\Function\ParallelSafety;
+use PHPUnit\Framework\TestCase;
 
-final class FunctionBuilderTest extends PGQueryTestCase
+final class FunctionBuilderTest extends TestCase
 {
     public function test_alter_function_immutable() : void
     {
         $builder = alter()->function('my_func')
-            ->arguments(func_arg(data_type_integer()))
+            ->arguments(func_arg(column_type_integer()))
             ->immutable();
 
-        $this->assertAlterFunctionQuery($builder, 'ALTER FUNCTION my_func(int) IMMUTABLE');
+        self::assertSame('ALTER FUNCTION my_func(int) IMMUTABLE', $builder->toSql());
     }
 
     public function test_alter_function_parallel_safe() : void
     {
         $builder = alter()->function('my_func')
-            ->arguments(func_arg(data_type_integer()))
+            ->arguments(func_arg(column_type_integer()))
             ->parallel(ParallelSafety::SAFE);
 
-        $this->assertAlterFunctionQuery($builder, 'ALTER FUNCTION my_func(int) PARALLEL safe');
+        self::assertSame('ALTER FUNCTION my_func(int) PARALLEL safe', $builder->toSql());
     }
 
     public function test_alter_function_rename() : void
     {
         $builder = alter()->function('old_name')
-            ->arguments(func_arg(data_type_text()))
+            ->arguments(func_arg(column_type_text()))
             ->renameTo('new_name');
 
-        $this->assertAlterFunctionRenameQuery($builder, 'ALTER FUNCTION old_name(pg_catalog.text) RENAME TO new_name');
+        self::assertSame('ALTER FUNCTION old_name(pg_catalog.text) RENAME TO new_name', $builder->toSql());
     }
 
     public function test_alter_procedure_rename() : void
     {
         $builder = alter()->procedure('old_proc')
-            ->arguments(func_arg(data_type_integer()))
+            ->arguments(func_arg(column_type_integer()))
             ->renameTo('new_proc');
 
-        $this->assertAlterProcedureRenameQuery($builder, 'ALTER PROCEDURE old_proc(int) RENAME TO new_proc');
+        self::assertSame('ALTER PROCEDURE old_proc(int) RENAME TO new_proc', $builder->toSql());
     }
 
     public function test_call_procedure() : void
     {
         $builder = call('update_stats');
 
-        $this->assertCallQuery($builder, 'CALL update_stats()');
+        self::assertSame('CALL update_stats()', $builder->toSql());
     }
 
     public function test_call_procedure_with_args() : void
     {
         $builder = call('update_stats')->with(123, 'test');
 
-        $this->assertCallQuery($builder, "CALL update_stats(123, 'test')");
+        self::assertSame("CALL update_stats(123, 'test')", $builder->toSql());
     }
 
     public function test_create_function_plpgsql() : void
     {
         $builder = create()->function('increment')
-            ->arguments(func_arg(data_type_integer())->named('val'))
-            ->returns(data_type_integer())
+            ->arguments(func_arg(column_type_integer())->named('val'))
+            ->returns(column_type_integer())
             ->language('plpgsql')
             ->as('BEGIN RETURN val + 1; END;');
 
-        $this->assertCreateFunctionQuery(
-            $builder,
-            'CREATE FUNCTION increment(IN val int) RETURNS int LANGUAGE plpgsql AS $$BEGIN RETURN val + 1; END;$$'
+        self::assertSame(
+            'CREATE FUNCTION increment(IN val int) RETURNS int LANGUAGE plpgsql AS $$BEGIN RETURN val + 1; END;$$',
+            $builder->toSql()
         );
     }
 
     public function test_create_function_returns_table() : void
     {
         $builder = create()->function('get_users')
-            ->returnsTable(['id' => data_type_integer(), 'name' => data_type_text()])
+            ->returnsTable(['id' => column_type_integer(), 'name' => column_type_text()])
             ->language('sql')
             ->as('SELECT id, name FROM users');
 
-        $this->assertCreateFunctionQuery(
-            $builder,
-            'CREATE FUNCTION get_users() RETURNS TABLE (id int, name pg_catalog.text) LANGUAGE sql AS $$SELECT id, name FROM users$$'
+        self::assertSame(
+            'CREATE FUNCTION get_users() RETURNS TABLE (id int, name pg_catalog.text) LANGUAGE sql AS $$SELECT id, name FROM users$$',
+            $builder->toSql()
         );
     }
 
     public function test_create_function_simple() : void
     {
         $builder = create()->function('add_numbers')
-            ->arguments(func_arg(data_type_integer())->named('a'), func_arg(data_type_integer())->named('b'))
-            ->returns(data_type_integer())
+            ->arguments(func_arg(column_type_integer())->named('a'), func_arg(column_type_integer())->named('b'))
+            ->returns(column_type_integer())
             ->language('sql')
             ->as('SELECT a + b');
 
-        $this->assertCreateFunctionQuery(
-            $builder,
-            'CREATE FUNCTION add_numbers(IN a int, IN b int) RETURNS int LANGUAGE sql AS $$SELECT a + b$$'
+        self::assertSame(
+            'CREATE FUNCTION add_numbers(IN a int, IN b int) RETURNS int LANGUAGE sql AS $$SELECT a + b$$',
+            $builder->toSql()
         );
     }
 
     public function test_create_function_with_options() : void
     {
         $builder = create()->function('compute')
-            ->arguments(func_arg(data_type_integer())->named('x'))
-            ->returns(data_type_integer())
+            ->arguments(func_arg(column_type_integer())->named('x'))
+            ->returns(column_type_integer())
             ->language('sql')
             ->immutable()
             ->parallel(ParallelSafety::SAFE)
             ->strict()
             ->as('SELECT x * 2');
 
-        $this->assertCreateFunctionQuery(
-            $builder,
-            'CREATE FUNCTION compute(IN x int) RETURNS int LANGUAGE sql IMMUTABLE PARALLEL safe RETURNS NULL ON NULL INPUT AS $$SELECT x * 2$$'
+        self::assertSame(
+            'CREATE FUNCTION compute(IN x int) RETURNS int LANGUAGE sql IMMUTABLE PARALLEL safe RETURNS NULL ON NULL INPUT AS $$SELECT x * 2$$',
+            $builder->toSql()
         );
     }
 
@@ -121,26 +122,26 @@ public function test_create_function_with_or_replace() : void
     {
         $builder = create()->function('my_func')
             ->orReplace()
-            ->returns(data_type_integer())
+            ->returns(column_type_integer())
             ->language('sql')
             ->as('SELECT 1');
 
-        $this->assertCreateFunctionQuery(
-            $builder,
-            'CREATE OR REPLACE FUNCTION my_func() RETURNS int LANGUAGE sql AS $$SELECT 1$$'
+        self::assertSame(
+            'CREATE OR REPLACE FUNCTION my_func() RETURNS int LANGUAGE sql AS $$SELECT 1$$',
+            $builder->toSql()
         );
     }
 
     public function test_create_procedure() : void
     {
         $builder = create()->procedure('update_stats')
-            ->arguments(func_arg(data_type_integer())->named('user_id'))
+            ->arguments(func_arg(column_type_integer())->named('user_id'))
             ->language('plpgsql')
             ->as('BEGIN UPDATE stats SET count = count + 1 WHERE id = user_id; END;');
 
-        $this->assertCreateProcedureQuery(
-            $builder,
-            'CREATE PROCEDURE update_stats(IN user_id int) LANGUAGE plpgsql AS $$BEGIN UPDATE stats SET count = count + 1 WHERE id = user_id; END;$$'
+        self::assertSame(
+            'CREATE PROCEDURE update_stats(IN user_id int) LANGUAGE plpgsql AS $$BEGIN UPDATE stats SET count = count + 1 WHERE id = user_id; END;$$',
+            $builder->toSql()
         );
     }
 
@@ -151,9 +152,9 @@ public function test_create_procedure_with_or_replace() : void
             ->language('sql')
             ->as('SELECT 1');
 
-        $this->assertCreateProcedureQuery(
-            $builder,
-            'CREATE OR REPLACE PROCEDURE my_proc() LANGUAGE sql AS $$SELECT 1$$'
+        self::assertSame(
+            'CREATE OR REPLACE PROCEDURE my_proc() LANGUAGE sql AS $$SELECT 1$$',
+            $builder->toSql()
         );
     }
 
@@ -161,47 +162,47 @@ public function test_do_block() : void
     {
         $builder = do_block('BEGIN RAISE NOTICE $$Hello$$; END;');
 
-        $this->assertDoQuery($builder, 'DO $outer$BEGIN RAISE NOTICE $$Hello$$; END;$outer$ LANGUAGE plpgsql');
+        self::assertSame('DO $outer$BEGIN RAISE NOTICE $$Hello$$; END;$outer$ LANGUAGE plpgsql', $builder->toSql());
     }
 
     public function test_do_block_with_language() : void
     {
         $builder = do_block('SELECT 1')->language('sql');
 
-        $this->assertDoQuery($builder, 'DO $$SELECT 1$$ LANGUAGE sql');
+        self::assertSame('DO $$SELECT 1$$ LANGUAGE sql', $builder->toSql());
     }
 
     public function test_drop_function() : void
     {
         $builder = drop()->function('my_func');
 
-        $this->assertDropFunctionQuery($builder, 'DROP FUNCTION my_func');
+        self::assertSame('DROP FUNCTION my_func', $builder->toSql());
     }
 
     public function test_drop_function_if_exists_cascade() : void
     {
         $builder = drop()->function('my_func')
             ->ifExists()
-            ->arguments(func_arg(data_type_integer()), func_arg(data_type_text()))
+            ->arguments(func_arg(column_type_integer()), func_arg(column_type_text()))
             ->cascade();
 
-        $this->assertDropFunctionQuery($builder, 'DROP FUNCTION IF EXISTS my_func(int, pg_catalog.text) CASCADE');
+        self::assertSame('DROP FUNCTION IF EXISTS my_func(int, pg_catalog.text) CASCADE', $builder->toSql());
     }
 
     public function test_drop_procedure() : void
     {
         $builder = drop()->procedure('my_proc');
 
-        $this->assertDropProcedureQuery($builder, 'DROP PROCEDURE my_proc');
+        self::assertSame('DROP PROCEDURE my_proc', $builder->toSql());
     }
 
     public function test_drop_procedure_if_exists() : void
     {
         $builder = drop()->procedure('my_proc')
             ->ifExists()
-            ->arguments(func_arg(data_type_integer()))
+            ->arguments(func_arg(column_type_integer()))
             ->cascade();
 
-        $this->assertDropProcedureQuery($builder, 'DROP PROCEDURE IF EXISTS my_proc(int) CASCADE');
+        self::assertSame('DROP PROCEDURE IF EXISTS my_proc(int) CASCADE', $builder->toSql());
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/IndexBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Index/IndexBuilderTest.php
similarity index 71%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/IndexBuilderTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Index/IndexBuilderTest.php
index ced07255b7..0af88aa73e 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/IndexBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Index/IndexBuilderTest.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Index;
 
 use function Flow\PostgreSql\DSL\{alter,
     col,
@@ -19,16 +19,18 @@
     reindex_schema,
     reindex_table};
 
-final class IndexBuilderTest extends PGQueryTestCase
+use PHPUnit\Framework\TestCase;
+
+final class IndexBuilderTest extends TestCase
 {
     public function test_alter_index_rename() : void
     {
         $builder = alter()->index('idx_old')
             ->renameTo('idx_new');
 
-        $this->assertAlterIndexRenameQuery(
-            $builder,
-            'ALTER INDEX idx_old RENAME TO idx_new'
+        self::assertSame(
+            'ALTER INDEX idx_old RENAME TO idx_new',
+            $builder->toSql()
         );
     }
 
@@ -38,9 +40,9 @@ public function test_alter_index_rename_if_exists() : void
             ->ifExists()
             ->renameTo('idx_new');
 
-        $this->assertAlterIndexRenameQuery(
-            $builder,
-            'ALTER INDEX IF EXISTS idx_old RENAME TO idx_new'
+        self::assertSame(
+            'ALTER INDEX IF EXISTS idx_old RENAME TO idx_new',
+            $builder->toSql()
         );
     }
 
@@ -49,9 +51,9 @@ public function test_alter_index_rename_with_schema() : void
         $builder = alter()->index('idx_old', 'public')
             ->renameTo('idx_new');
 
-        $this->assertAlterIndexRenameQuery(
-            $builder,
-            'ALTER INDEX public.idx_old RENAME TO idx_new'
+        self::assertSame(
+            'ALTER INDEX public.idx_old RENAME TO idx_new',
+            $builder->toSql()
         );
     }
 
@@ -60,9 +62,9 @@ public function test_alter_index_set_tablespace() : void
         $builder = alter()->index('idx_users_email')
             ->setTablespace('fast_storage');
 
-        $this->assertAlterIndexTablespaceQuery(
-            $builder,
-            'ALTER INDEX idx_users_email SET TABLESPACE fast_storage'
+        self::assertSame(
+            'ALTER INDEX idx_users_email SET TABLESPACE fast_storage',
+            $builder->toSql()
         );
     }
 
@@ -72,9 +74,9 @@ public function test_alter_index_set_tablespace_if_exists() : void
             ->ifExists()
             ->setTablespace('fast_storage');
 
-        $this->assertAlterIndexTablespaceQuery(
-            $builder,
-            'ALTER INDEX IF EXISTS idx_users_email SET TABLESPACE fast_storage'
+        self::assertSame(
+            'ALTER INDEX IF EXISTS idx_users_email SET TABLESPACE fast_storage',
+            $builder->toSql()
         );
     }
 
@@ -85,9 +87,9 @@ public function test_create_index_concurrently() : void
             ->on('users')
             ->columns('email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX CONCURRENTLY idx_users_email ON users (email)'
+        self::assertSame(
+            'CREATE INDEX CONCURRENTLY idx_users_email ON users (email)',
+            $builder->toSql()
         );
     }
 
@@ -98,9 +100,9 @@ public function test_create_index_if_not_exists() : void
             ->on('users')
             ->columns('email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX IF NOT EXISTS idx_users_email ON users (email)'
+        self::assertSame(
+            'CREATE INDEX IF NOT EXISTS idx_users_email ON users (email)',
+            $builder->toSql()
         );
     }
 
@@ -110,9 +112,9 @@ public function test_create_index_simple() : void
             ->on('users')
             ->columns('email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_email ON users (email)'
+        self::assertSame(
+            'CREATE INDEX idx_users_email ON users (email)',
+            $builder->toSql()
         );
     }
 
@@ -123,9 +125,9 @@ public function test_create_index_unique() : void
             ->on('users')
             ->columns('email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE UNIQUE INDEX idx_users_email ON users (email)'
+        self::assertSame(
+            'CREATE UNIQUE INDEX idx_users_email ON users (email)',
+            $builder->toSql()
         );
     }
 
@@ -138,9 +140,9 @@ public function test_create_index_unique_concurrently_if_not_exists() : void
             ->on('users')
             ->columns('email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE UNIQUE INDEX CONCURRENTLY IF NOT EXISTS idx_users_email ON users (email)'
+        self::assertSame(
+            'CREATE UNIQUE INDEX CONCURRENTLY IF NOT EXISTS idx_users_email ON users (email)',
+            $builder->toSql()
         );
     }
 
@@ -151,9 +153,9 @@ public function test_create_index_with_btree_method() : void
             ->using(index_method_btree())
             ->columns('email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_email ON users USING btree (email)'
+        self::assertSame(
+            'CREATE INDEX idx_users_email ON users USING btree (email)',
+            $builder->toSql()
         );
     }
 
@@ -163,9 +165,9 @@ public function test_create_index_with_desc_order() : void
             ->on('users')
             ->columns(index_col('created_at')->desc());
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_created_at ON users (created_at DESC)'
+        self::assertSame(
+            'CREATE INDEX idx_users_created_at ON users (created_at DESC)',
+            $builder->toSql()
         );
     }
 
@@ -176,9 +178,9 @@ public function test_create_index_with_gin_method() : void
             ->using(index_method_gin())
             ->columns('content');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_documents_content ON documents USING gin (content)'
+        self::assertSame(
+            'CREATE INDEX idx_documents_content ON documents USING gin (content)',
+            $builder->toSql()
         );
     }
 
@@ -189,9 +191,9 @@ public function test_create_index_with_hash_method() : void
             ->using(index_method_hash())
             ->columns('email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_email ON users USING hash (email)'
+        self::assertSame(
+            'CREATE INDEX idx_users_email ON users USING hash (email)',
+            $builder->toSql()
         );
     }
 
@@ -202,9 +204,9 @@ public function test_create_index_with_include() : void
             ->columns('email')
             ->include('name', 'created_at');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_email ON users (email) INCLUDE (name, created_at)'
+        self::assertSame(
+            'CREATE INDEX idx_users_email ON users (email) INCLUDE (name, created_at)',
+            $builder->toSql()
         );
     }
 
@@ -214,9 +216,9 @@ public function test_create_index_with_multiple_columns() : void
             ->on('users')
             ->columns('name', 'email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_name_email ON users (name, email)'
+        self::assertSame(
+            'CREATE INDEX idx_users_name_email ON users (name, email)',
+            $builder->toSql()
         );
     }
 
@@ -226,9 +228,9 @@ public function test_create_index_with_nulls_first() : void
             ->on('users')
             ->columns(index_col('created_at')->desc()->nullsFirst());
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_created_at ON users (created_at DESC NULLS FIRST)'
+        self::assertSame(
+            'CREATE INDEX idx_users_created_at ON users (created_at DESC NULLS FIRST)',
+            $builder->toSql()
         );
     }
 
@@ -238,9 +240,9 @@ public function test_create_index_with_nulls_last() : void
             ->on('users')
             ->columns(index_col('created_at')->nullsLast());
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_created_at ON users (created_at NULLS LAST)'
+        self::assertSame(
+            'CREATE INDEX idx_users_created_at ON users (created_at NULLS LAST)',
+            $builder->toSql()
         );
     }
 
@@ -252,9 +254,9 @@ public function test_create_index_with_nulls_not_distinct() : void
             ->columns('email')
             ->nullsNotDistinct();
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE UNIQUE INDEX idx_users_email ON users (email) NULLS NOT DISTINCT'
+        self::assertSame(
+            'CREATE UNIQUE INDEX idx_users_email ON users (email) NULLS NOT DISTINCT',
+            $builder->toSql()
         );
     }
 
@@ -264,9 +266,9 @@ public function test_create_index_with_on_only() : void
             ->onOnly('users')
             ->columns('email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_email ON ONLY users (email)'
+        self::assertSame(
+            'CREATE INDEX idx_users_email ON ONLY users (email)',
+            $builder->toSql()
         );
     }
 
@@ -276,9 +278,9 @@ public function test_create_index_with_schema() : void
             ->on('users', 'public')
             ->columns('email');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_email ON public.users (email)'
+        self::assertSame(
+            'CREATE INDEX idx_users_email ON public.users (email)',
+            $builder->toSql()
         );
     }
 
@@ -289,9 +291,9 @@ public function test_create_index_with_tablespace() : void
             ->columns('email')
             ->tablespace('fast_storage');
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_email ON users (email) TABLESPACE fast_storage'
+        self::assertSame(
+            'CREATE INDEX idx_users_email ON users (email) TABLESPACE fast_storage',
+            $builder->toSql()
         );
     }
 
@@ -302,9 +304,9 @@ public function test_create_partial_index() : void
             ->columns('email')
             ->where(eq(col('active'), literal(true)));
 
-        $this->assertCreateIndexQuery(
-            $builder,
-            'CREATE INDEX idx_users_active_email ON users (email) WHERE active = true'
+        self::assertSame(
+            'CREATE INDEX idx_users_active_email ON users (email) WHERE active = true',
+            $builder->toSql()
         );
     }
 
@@ -313,9 +315,9 @@ public function test_drop_index_cascade() : void
         $builder = drop()->index('idx_users_email')
             ->cascade();
 
-        $this->assertDropIndexQuery(
-            $builder,
-            'DROP INDEX idx_users_email CASCADE'
+        self::assertSame(
+            'DROP INDEX idx_users_email CASCADE',
+            $builder->toSql()
         );
     }
 
@@ -324,9 +326,9 @@ public function test_drop_index_concurrently() : void
         $builder = drop()->index('idx_users_email')
             ->concurrently();
 
-        $this->assertDropIndexQuery(
-            $builder,
-            'DROP INDEX CONCURRENTLY idx_users_email'
+        self::assertSame(
+            'DROP INDEX CONCURRENTLY idx_users_email',
+            $builder->toSql()
         );
     }
 
@@ -335,9 +337,9 @@ public function test_drop_index_if_exists() : void
         $builder = drop()->index('idx_users_email')
             ->ifExists();
 
-        $this->assertDropIndexQuery(
-            $builder,
-            'DROP INDEX IF EXISTS idx_users_email'
+        self::assertSame(
+            'DROP INDEX IF EXISTS idx_users_email',
+            $builder->toSql()
         );
     }
 
@@ -347,9 +349,9 @@ public function test_drop_index_if_exists_cascade() : void
             ->ifExists()
             ->cascade();
 
-        $this->assertDropIndexQuery(
-            $builder,
-            'DROP INDEX IF EXISTS idx_users_email CASCADE'
+        self::assertSame(
+            'DROP INDEX IF EXISTS idx_users_email CASCADE',
+            $builder->toSql()
         );
     }
 
@@ -357,9 +359,9 @@ public function test_drop_index_multiple() : void
     {
         $builder = drop()->index('idx_users_email', 'idx_users_name', 'idx_orders_date');
 
-        $this->assertDropIndexQuery(
-            $builder,
-            'DROP INDEX idx_users_email, idx_users_name, idx_orders_date'
+        self::assertSame(
+            'DROP INDEX idx_users_email, idx_users_name, idx_orders_date',
+            $builder->toSql()
         );
     }
 
@@ -368,9 +370,9 @@ public function test_drop_index_restrict() : void
         $builder = drop()->index('idx_users_email')
             ->restrict();
 
-        $this->assertDropIndexQuery(
-            $builder,
-            'DROP INDEX idx_users_email'
+        self::assertSame(
+            'DROP INDEX idx_users_email',
+            $builder->toSql()
         );
     }
 
@@ -378,9 +380,9 @@ public function test_drop_index_simple() : void
     {
         $builder = drop()->index('idx_users_email');
 
-        $this->assertDropIndexQuery(
-            $builder,
-            'DROP INDEX idx_users_email'
+        self::assertSame(
+            'DROP INDEX idx_users_email',
+            $builder->toSql()
         );
     }
 
@@ -388,9 +390,9 @@ public function test_drop_index_with_schema() : void
     {
         $builder = drop()->index('public.idx_users_email');
 
-        $this->assertDropIndexQuery(
-            $builder,
-            'DROP INDEX public.idx_users_email'
+        self::assertSame(
+            'DROP INDEX public.idx_users_email',
+            $builder->toSql()
         );
     }
 
@@ -398,9 +400,9 @@ public function test_reindex_database() : void
     {
         $builder = reindex_database('mydb');
 
-        $this->assertReindexQuery(
-            $builder,
-            'REINDEX DATABASE mydb'
+        self::assertSame(
+            'REINDEX DATABASE mydb',
+            $builder->toSql()
         );
     }
 
@@ -408,9 +410,9 @@ public function test_reindex_index() : void
     {
         $builder = reindex_index('idx_users_email');
 
-        $this->assertReindexQuery(
-            $builder,
-            'REINDEX INDEX idx_users_email'
+        self::assertSame(
+            'REINDEX INDEX idx_users_email',
+            $builder->toSql()
         );
     }
 
@@ -419,9 +421,9 @@ public function test_reindex_index_concurrently() : void
         $builder = reindex_index('idx_users_email')
             ->concurrently();
 
-        $this->assertReindexQuery(
-            $builder,
-            'REINDEX (CONCURRENTLY) INDEX idx_users_email'
+        self::assertSame(
+            'REINDEX (CONCURRENTLY) INDEX idx_users_email',
+            $builder->toSql()
         );
     }
 
@@ -430,9 +432,9 @@ public function test_reindex_index_with_tablespace() : void
         $builder = reindex_index('idx_users_email')
             ->tablespace('fast_storage');
 
-        $this->assertReindexQuery(
-            $builder,
-            'REINDEX (TABLESPACE fast_storage) INDEX idx_users_email'
+        self::assertSame(
+            'REINDEX (TABLESPACE fast_storage) INDEX idx_users_email',
+            $builder->toSql()
         );
     }
 
@@ -440,9 +442,9 @@ public function test_reindex_schema() : void
     {
         $builder = reindex_schema('public');
 
-        $this->assertReindexQuery(
-            $builder,
-            'REINDEX SCHEMA public'
+        self::assertSame(
+            'REINDEX SCHEMA public',
+            $builder->toSql()
         );
     }
 
@@ -450,9 +452,9 @@ public function test_reindex_table() : void
     {
         $builder = reindex_table('users');
 
-        $this->assertReindexQuery(
-            $builder,
-            'REINDEX TABLE users'
+        self::assertSame(
+            'REINDEX TABLE users',
+            $builder->toSql()
         );
     }
 
@@ -461,9 +463,9 @@ public function test_reindex_table_concurrently() : void
         $builder = reindex_table('users')
             ->concurrently();
 
-        $this->assertReindexQuery(
-            $builder,
-            'REINDEX (CONCURRENTLY) TABLE users'
+        self::assertSame(
+            'REINDEX (CONCURRENTLY) TABLE users',
+            $builder->toSql()
         );
     }
 
@@ -472,9 +474,9 @@ public function test_reindex_table_verbose() : void
         $builder = reindex_table('users')
             ->verbose();
 
-        $this->assertReindexQuery(
-            $builder,
-            'REINDEX (VERBOSE) TABLE users'
+        self::assertSame(
+            'REINDEX (VERBOSE) TABLE users',
+            $builder->toSql()
         );
     }
 
@@ -482,9 +484,9 @@ public function test_reindex_table_with_schema() : void
     {
         $builder = reindex_table('public.users');
 
-        $this->assertReindexQuery(
-            $builder,
-            'REINDEX TABLE public.users'
+        self::assertSame(
+            'REINDEX TABLE public.users',
+            $builder->toSql()
         );
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Index/IndexColumnTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Index/IndexColumnTest.php
index ab98976f99..0112d121af 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Index/IndexColumnTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Index/IndexColumnTest.php
@@ -4,9 +4,10 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Index;
 
+use function Flow\PostgreSql\DSL\{col, func};
 use Flow\PostgreSql\Protobuf\AST\{IndexElem, SortByDir, SortByNulls};
-use Flow\PostgreSql\QueryBuilder\Expression\RawExpression;
 use Flow\PostgreSql\QueryBuilder\Schema\Index\IndexColumn;
+
 use PHPUnit\Framework\TestCase;
 
 final class IndexColumnTest extends TestCase
@@ -79,7 +80,7 @@ public function test_desc_sets_ordering() : void
 
     public function test_expression_creates_index_elem() : void
     {
-        $column = IndexColumn::expression(new RawExpression('lower(name)'));
+        $column = IndexColumn::expression(func('lower', [col('name')]));
 
         $ast = $column->toAst();
 
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Role/RoleBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Role/RoleBuilderTest.php
index d6868c870e..8a9218e5f7 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Role/RoleBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Role/RoleBuilderTest.php
@@ -4,7 +4,9 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Role;
 
+use function Flow\PostgreSql\DSL\{alter, create, drop, grant, grant_role, reassign_owned, reset_role, revoke, revoke_role, set_role};
 use Flow\PostgreSql\Protobuf\AST\{AlterRoleStmt, CreateRoleStmt, DropRoleStmt, ObjectType, RenameStmt, RoleSpecType, RoleStmtType};
+use Flow\PostgreSql\QueryBuilder\Schema\Grant\TablePrivilege;
 use Flow\PostgreSql\QueryBuilder\Schema\Role\{AlterRoleBuilder, CreateRoleBuilder, DropRoleBuilder};
 use PHPUnit\Framework\TestCase;
 
@@ -49,6 +51,16 @@ public function test_alter_role_rename_sets_names() : void
         self::assertSame('new_name', $ast->getNewname());
     }
 
+    public function test_alter_role_rename_to_sql() : void
+    {
+        self::assertSame('ALTER ROLE old_name RENAME TO new_name', alter()->role('old_name')->renameTo('new_name')->toSql());
+    }
+
+    public function test_alter_role_set_options_to_sql() : void
+    {
+        self::assertSame('ALTER ROLE admin WITH SUPERUSER', alter()->role('admin')->superuser()->toSql());
+    }
+
     public function test_alter_role_sets_role_spec() : void
     {
         $builder = AlterRoleBuilder::create('admin')
@@ -62,6 +74,11 @@ public function test_alter_role_sets_role_spec() : void
         self::assertSame('admin', $roleSpec->getRolename());
     }
 
+    public function test_alter_role_with_multiple_options_to_sql() : void
+    {
+        self::assertSame('ALTER ROLE admin WITH NOSUPERUSER CREATEDB', alter()->role('admin')->noSuperuser()->createDb()->toSql());
+    }
+
     public function test_create_role_ast_type() : void
     {
         $builder = CreateRoleBuilder::create('admin');
@@ -90,6 +107,11 @@ public function test_create_role_sets_name() : void
         self::assertSame('admin', $ast->getRole());
     }
 
+    public function test_create_role_simple_to_sql() : void
+    {
+        self::assertSame('CREATE ROLE admin', create()->role('admin')->toSql());
+    }
+
     public function test_create_role_with_login_option() : void
     {
         $builder = CreateRoleBuilder::create('app_user')
@@ -105,6 +127,11 @@ public function test_create_role_with_login_option() : void
         self::assertSame('canlogin', $defElem->getDefname());
     }
 
+    public function test_create_role_with_login_to_sql() : void
+    {
+        self::assertSame('CREATE ROLE app_user WITH LOGIN', create()->role('app_user')->login()->toSql());
+    }
+
     public function test_create_role_with_multiple_options() : void
     {
         $builder = CreateRoleBuilder::create('admin')
@@ -118,6 +145,11 @@ public function test_create_role_with_multiple_options() : void
         self::assertCount(3, $options);
     }
 
+    public function test_create_role_with_options_to_sql() : void
+    {
+        self::assertSame('CREATE ROLE admin WITH SUPERUSER LOGIN', create()->role('admin')->superuser()->login()->toSql());
+    }
+
     public function test_create_role_with_password_option() : void
     {
         $builder = CreateRoleBuilder::create('admin')
@@ -148,6 +180,21 @@ public function test_create_role_with_superuser_option() : void
         self::assertSame('superuser', $defElem->getDefname());
     }
 
+    public function test_create_user_with_password_to_sql() : void
+    {
+        self::assertSame("CREATE ROLE app_user WITH LOGIN PASSWORD 'secret'", create()->role('app_user')->login()->withPassword('secret')->toSql());
+    }
+
+    public function test_drop_owned_by_cascade_to_sql() : void
+    {
+        self::assertSame('DROP OWNED BY role1 CASCADE', drop()->owned('role1')->cascade()->toSql());
+    }
+
+    public function test_drop_owned_by_to_sql() : void
+    {
+        self::assertSame('DROP OWNED BY role1', drop()->owned('role1')->toSql());
+    }
+
     public function test_drop_role_ast_type() : void
     {
         $builder = DropRoleBuilder::create('admin');
@@ -167,6 +214,11 @@ public function test_drop_role_if_exists_sets_flag() : void
         self::assertTrue($ast->getMissingOk());
     }
 
+    public function test_drop_role_if_exists_to_sql() : void
+    {
+        self::assertSame('DROP ROLE IF EXISTS admin', drop()->role('admin')->ifExists()->toSql());
+    }
+
     public function test_drop_role_immutability() : void
     {
         $original = DropRoleBuilder::create('admin');
@@ -185,6 +237,11 @@ public function test_drop_role_multiple_roles() : void
         self::assertCount(3, $ast->getRoles());
     }
 
+    public function test_drop_role_multiple_to_sql() : void
+    {
+        self::assertSame('DROP ROLE role1, role2', drop()->role('role1', 'role2')->toSql());
+    }
+
     public function test_drop_role_sets_role_names() : void
     {
         $builder = DropRoleBuilder::create('admin');
@@ -199,4 +256,74 @@ public function test_drop_role_sets_role_names() : void
         self::assertSame(RoleSpecType::ROLESPEC_CSTRING, $roleSpec->getRoletype());
         self::assertSame('admin', $roleSpec->getRolename());
     }
+
+    public function test_drop_role_simple_to_sql() : void
+    {
+        self::assertSame('DROP ROLE admin', drop()->role('admin')->toSql());
+    }
+
+    public function test_grant_all_on_table_to_sql() : void
+    {
+        self::assertSame('GRANT ALL ON users TO admin', grant(TablePrivilege::ALL)->onTable('users')->to('admin')->toSql());
+    }
+
+    public function test_grant_on_all_tables_in_schema_to_sql() : void
+    {
+        self::assertSame('GRANT select ON ALL TABLES IN SCHEMA public TO admin', grant(TablePrivilege::SELECT)->onAllTablesInSchema('public')->to('admin')->toSql());
+    }
+
+    public function test_grant_role_to_role_to_sql() : void
+    {
+        self::assertSame('GRANT admin TO user1', grant_role('admin')->to('user1')->toSql());
+    }
+
+    public function test_grant_role_with_admin_option_to_sql() : void
+    {
+        self::assertSame('GRANT admin TO user1 WITH ADMIN OPTION', grant_role('admin')->to('user1')->withAdminOption()->toSql());
+    }
+
+    public function test_grant_select_on_table_to_sql() : void
+    {
+        self::assertSame('GRANT select ON users TO app_user', grant(TablePrivilege::SELECT)->onTable('users')->to('app_user')->toSql());
+    }
+
+    public function test_grant_with_grant_option_to_sql() : void
+    {
+        self::assertSame('GRANT select ON users TO app_user WITH GRANT OPTION', grant(TablePrivilege::SELECT)->onTable('users')->to('app_user')->withGrantOption()->toSql());
+    }
+
+    public function test_reassign_owned_by_to_sql() : void
+    {
+        self::assertSame('REASSIGN OWNED BY old_role TO new_role', reassign_owned('old_role')->to('new_role')->toSql());
+    }
+
+    public function test_reset_role_to_sql() : void
+    {
+        self::assertSame('RESET role', reset_role()->toSql());
+    }
+
+    public function test_revoke_role_cascade_to_sql() : void
+    {
+        self::assertSame('REVOKE admin FROM user1 CASCADE', revoke_role('admin')->from('user1')->cascade()->toSql());
+    }
+
+    public function test_revoke_role_from_role_to_sql() : void
+    {
+        self::assertSame('REVOKE admin FROM user1', revoke_role('admin')->from('user1')->toSql());
+    }
+
+    public function test_revoke_select_on_table_to_sql() : void
+    {
+        self::assertSame('REVOKE select ON users FROM app_user', revoke(TablePrivilege::SELECT)->onTable('users')->from('app_user')->toSql());
+    }
+
+    public function test_revoke_with_cascade_to_sql() : void
+    {
+        self::assertSame('REVOKE select ON users FROM app_user CASCADE', revoke(TablePrivilege::SELECT)->onTable('users')->from('app_user')->cascade()->toSql());
+    }
+
+    public function test_set_role_to_sql() : void
+    {
+        self::assertSame('SET role TO admin', set_role('admin')->toSql());
+    }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/RuleBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Rule/RuleBuilderTest.php
similarity index 60%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/RuleBuilderTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Rule/RuleBuilderTest.php
index 973aa6097b..c72b07054a 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/RuleBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Rule/RuleBuilderTest.php
@@ -2,16 +2,13 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Rule;
 
-use function Flow\PostgreSql\DSL\{create, drop};
-use Flow\PostgreSql\Tests\Integration\QueryBuilder\Assertions\QueryBuilderAssertions;
+use function Flow\PostgreSql\DSL\{col, create, drop, eq, literal};
 use PHPUnit\Framework\TestCase;
 
 final class RuleBuilderTest extends TestCase
 {
-    use QueryBuilderAssertions;
-
     public function test_create_rule_do_also_insert() : void
     {
         $builder = create()->rule('audit_insert')
@@ -19,7 +16,7 @@ public function test_create_rule_do_also_insert() : void
             ->to('users')
             ->doAlso("INSERT INTO audit_log (action) VALUES ('insert')");
 
-        $this->assertCreateRuleQuery($builder, "CREATE RULE audit_insert AS ON INSERT TO users DO INSERT INTO audit_log (action) VALUES ('insert')");
+        self::assertSame("CREATE RULE audit_insert AS ON INSERT TO users DO INSERT INTO audit_log (action) VALUES ('insert')", $builder->toSql());
     }
 
     public function test_create_rule_do_instead_delete() : void
@@ -29,7 +26,7 @@ public function test_create_rule_do_instead_delete() : void
             ->to('users')
             ->doInstead('UPDATE users SET deleted = true WHERE id = OLD.id');
 
-        $this->assertCreateRuleQuery($builder, 'CREATE RULE soft_delete AS ON DELETE TO users DO INSTEAD UPDATE users SET deleted = true WHERE id = old.id');
+        self::assertSame('CREATE RULE soft_delete AS ON DELETE TO users DO INSTEAD UPDATE users SET deleted = true WHERE id = old.id', $builder->toSql());
     }
 
     public function test_create_rule_do_nothing() : void
@@ -39,7 +36,7 @@ public function test_create_rule_do_nothing() : void
             ->to('users')
             ->doNothing();
 
-        $this->assertCreateRuleQuery($builder, 'CREATE RULE prevent_delete AS ON DELETE TO users DO NOTHING');
+        self::assertSame('CREATE RULE prevent_delete AS ON DELETE TO users DO NOTHING', $builder->toSql());
     }
 
     public function test_create_rule_on_select() : void
@@ -49,7 +46,7 @@ public function test_create_rule_on_select() : void
             ->to('old_table')
             ->doInstead('SELECT * FROM new_table');
 
-        $this->assertCreateRuleQuery($builder, 'CREATE RULE redirect_select AS ON SELECT TO old_table DO INSTEAD SELECT * FROM new_table');
+        self::assertSame('CREATE RULE redirect_select AS ON SELECT TO old_table DO INSTEAD SELECT * FROM new_table', $builder->toSql());
     }
 
     public function test_create_rule_on_update() : void
@@ -59,7 +56,7 @@ public function test_create_rule_on_update() : void
             ->to('users')
             ->doAlso("INSERT INTO update_log (table_name) VALUES ('users')");
 
-        $this->assertCreateRuleQuery($builder, "CREATE RULE track_update AS ON UPDATE TO users DO INSERT INTO update_log (table_name) VALUES ('users')");
+        self::assertSame("CREATE RULE track_update AS ON UPDATE TO users DO INSERT INTO update_log (table_name) VALUES ('users')", $builder->toSql());
     }
 
     public function test_create_rule_or_replace() : void
@@ -70,7 +67,7 @@ public function test_create_rule_or_replace() : void
             ->to('users')
             ->doNothing();
 
-        $this->assertCreateRuleQuery($builder, 'CREATE OR REPLACE RULE prevent_delete AS ON DELETE TO users DO NOTHING');
+        self::assertSame('CREATE OR REPLACE RULE prevent_delete AS ON DELETE TO users DO NOTHING', $builder->toSql());
     }
 
     public function test_create_rule_with_schema() : void
@@ -80,7 +77,7 @@ public function test_create_rule_with_schema() : void
             ->to('public.users')
             ->doNothing();
 
-        $this->assertCreateRuleQuery($builder, 'CREATE RULE prevent_delete AS ON DELETE TO public.users DO NOTHING');
+        self::assertSame('CREATE RULE prevent_delete AS ON DELETE TO public.users DO NOTHING', $builder->toSql());
     }
 
     public function test_create_rule_with_where_condition() : void
@@ -88,10 +85,10 @@ public function test_create_rule_with_where_condition() : void
         $builder = create()->rule('protect_admin')
             ->asOnDelete()
             ->to('users')
-            ->where('OLD.role = \'admin\'')
+            ->where(eq(col('role', 'old'), literal('admin')))
             ->doNothing();
 
-        $this->assertCreateRuleQuery($builder, "CREATE RULE protect_admin AS ON DELETE TO users WHERE old.role = 'admin' DO NOTHING");
+        self::assertSame("CREATE RULE protect_admin AS ON DELETE TO users WHERE old.role = 'admin' DO NOTHING", $builder->toSql());
     }
 
     public function test_drop_rule() : void
@@ -99,7 +96,7 @@ public function test_drop_rule() : void
         $builder = drop()->rule('prevent_delete')
             ->on('users');
 
-        $this->assertDropRuleQuery($builder, 'DROP RULE prevent_delete ON users');
+        self::assertSame('DROP RULE prevent_delete ON users', $builder->toSql());
     }
 
     public function test_drop_rule_cascade() : void
@@ -108,7 +105,7 @@ public function test_drop_rule_cascade() : void
             ->on('users')
             ->cascade();
 
-        $this->assertDropRuleQuery($builder, 'DROP RULE prevent_delete ON users CASCADE');
+        self::assertSame('DROP RULE prevent_delete ON users CASCADE', $builder->toSql());
     }
 
     public function test_drop_rule_if_exists() : void
@@ -117,7 +114,7 @@ public function test_drop_rule_if_exists() : void
             ->ifExists()
             ->on('users');
 
-        $this->assertDropRuleQuery($builder, 'DROP RULE IF EXISTS prevent_delete ON users');
+        self::assertSame('DROP RULE IF EXISTS prevent_delete ON users', $builder->toSql());
     }
 
     public function test_drop_rule_with_schema() : void
@@ -126,6 +123,6 @@ public function test_drop_rule_with_schema() : void
             ->on('public.users')
             ->restrict();
 
-        $this->assertDropRuleQuery($builder, 'DROP RULE prevent_delete ON public.users');
+        self::assertSame('DROP RULE prevent_delete ON public.users', $builder->toSql());
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Schema/SchemaBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Schema/SchemaBuilderTest.php
index 43fb8c2e97..6cae74dd9d 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Schema/SchemaBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Schema/SchemaBuilderTest.php
@@ -4,6 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Schema;
 
+use function Flow\PostgreSql\DSL\{alter, create, drop};
 use Flow\PostgreSql\Protobuf\AST\{AlterOwnerStmt, CreateSchemaStmt, DropBehavior, DropStmt, ObjectType, RenameStmt, RoleSpecType};
 use Flow\PostgreSql\QueryBuilder\Schema\Schema\{AlterSchemaBuilder, CreateSchemaBuilder, DropSchemaBuilder};
 use PHPUnit\Framework\TestCase;
@@ -41,6 +42,11 @@ public function test_alter_schema_owner_sets_new_owner() : void
         self::assertSame('admin_user', $newOwner->getRolename());
     }
 
+    public function test_alter_schema_owner_to_sql() : void
+    {
+        self::assertSame('ALTER SCHEMA my_schema OWNER TO new_owner', alter()->schema('my_schema')->ownerTo('new_owner')->toSql());
+    }
+
     public function test_alter_schema_rename_ast_type() : void
     {
         $builder = AlterSchemaBuilder::create('old_schema')
@@ -63,6 +69,11 @@ public function test_alter_schema_rename_sets_names() : void
         self::assertSame('new_schema', $ast->getNewname());
     }
 
+    public function test_alter_schema_rename_to_sql() : void
+    {
+        self::assertSame('ALTER SCHEMA old_schema RENAME TO new_schema', alter()->schema('old_schema')->renameTo('new_schema')->toSql());
+    }
+
     public function test_create_schema_ast_type() : void
     {
         $builder = CreateSchemaBuilder::create('my_schema');
@@ -95,6 +106,16 @@ public function test_create_schema_if_not_exists_sets_flag() : void
         self::assertTrue($ast->getIfNotExists());
     }
 
+    public function test_create_schema_if_not_exists_to_sql() : void
+    {
+        self::assertSame('CREATE SCHEMA IF NOT EXISTS my_schema', create()->schema('my_schema')->ifNotExists()->toSql());
+    }
+
+    public function test_create_schema_if_not_exists_with_authorization_to_sql() : void
+    {
+        self::assertSame('CREATE SCHEMA IF NOT EXISTS my_schema AUTHORIZATION admin_user', create()->schema('my_schema')->ifNotExists()->authorization('admin_user')->toSql());
+    }
+
     public function test_create_schema_immutability() : void
     {
         $original = CreateSchemaBuilder::create('my_schema');
@@ -113,6 +134,16 @@ public function test_create_schema_sets_name() : void
         self::assertSame('my_schema', $ast->getSchemaname());
     }
 
+    public function test_create_schema_simple_to_sql() : void
+    {
+        self::assertSame('CREATE SCHEMA my_schema', create()->schema('my_schema')->toSql());
+    }
+
+    public function test_create_schema_with_authorization_to_sql() : void
+    {
+        self::assertSame('CREATE SCHEMA my_schema AUTHORIZATION admin_user', create()->schema('my_schema')->authorization('admin_user')->toSql());
+    }
+
     public function test_drop_schema_ast_type() : void
     {
         $builder = DropSchemaBuilder::create('my_schema');
@@ -133,6 +164,16 @@ public function test_drop_schema_cascade_sets_behavior() : void
         self::assertSame(DropBehavior::DROP_CASCADE, $ast->getBehavior());
     }
 
+    public function test_drop_schema_cascade_to_sql() : void
+    {
+        self::assertSame('DROP SCHEMA my_schema CASCADE', drop()->schema('my_schema')->cascade()->toSql());
+    }
+
+    public function test_drop_schema_if_exists_cascade_to_sql() : void
+    {
+        self::assertSame('DROP SCHEMA IF EXISTS my_schema CASCADE', drop()->schema('my_schema')->ifExists()->cascade()->toSql());
+    }
+
     public function test_drop_schema_if_exists_sets_flag() : void
     {
         $builder = DropSchemaBuilder::create('my_schema')
@@ -143,6 +184,11 @@ public function test_drop_schema_if_exists_sets_flag() : void
         self::assertTrue($ast->getMissingOk());
     }
 
+    public function test_drop_schema_if_exists_to_sql() : void
+    {
+        self::assertSame('DROP SCHEMA IF EXISTS my_schema', drop()->schema('my_schema')->ifExists()->toSql());
+    }
+
     public function test_drop_schema_immutability() : void
     {
         $original = DropSchemaBuilder::create('my_schema');
@@ -161,6 +207,11 @@ public function test_drop_schema_multiple_schemas() : void
         self::assertCount(3, $ast->getObjects());
     }
 
+    public function test_drop_schema_multiple_to_sql() : void
+    {
+        self::assertSame('DROP SCHEMA schema1, schema2', drop()->schema('schema1', 'schema2')->toSql());
+    }
+
     public function test_drop_schema_restrict_sets_behavior() : void
     {
         $builder = DropSchemaBuilder::create('my_schema')
@@ -170,4 +221,14 @@ public function test_drop_schema_restrict_sets_behavior() : void
 
         self::assertSame(DropBehavior::DROP_RESTRICT, $ast->getBehavior());
     }
+
+    public function test_drop_schema_restrict_to_sql() : void
+    {
+        self::assertSame('DROP SCHEMA my_schema', drop()->schema('my_schema')->restrict()->toSql());
+    }
+
+    public function test_drop_schema_simple_to_sql() : void
+    {
+        self::assertSame('DROP SCHEMA my_schema', drop()->schema('my_schema')->toSql());
+    }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TriggerBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Trigger/TriggerBuilderTest.php
similarity index 61%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TriggerBuilderTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Trigger/TriggerBuilderTest.php
index 3a60dc7455..43348b4bd8 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TriggerBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Trigger/TriggerBuilderTest.php
@@ -2,23 +2,20 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Trigger;
 
-use function Flow\PostgreSql\DSL\{alter, create, drop, raw_cond};
+use function Flow\PostgreSql\DSL\{alter, col, create, drop, eq, literal};
 use Flow\PostgreSql\QueryBuilder\Schema\Trigger\TriggerEvent;
-use Flow\PostgreSql\Tests\Integration\QueryBuilder\Assertions\QueryBuilderAssertions;
 use PHPUnit\Framework\TestCase;
 
 final class TriggerBuilderTest extends TestCase
 {
-    use QueryBuilderAssertions;
-
     public function test_alter_table_disable_trigger() : void
     {
         $builder = alter()->table('users')
             ->disableTrigger('audit_trigger');
 
-        $this->assertAlterTableQuery($builder, 'ALTER TABLE users DISABLE TRIGGER audit_trigger');
+        self::assertSame('ALTER TABLE users DISABLE TRIGGER audit_trigger', $builder->toSql());
     }
 
     public function test_alter_table_disable_trigger_all() : void
@@ -26,7 +23,7 @@ public function test_alter_table_disable_trigger_all() : void
         $builder = alter()->table('users')
             ->disableTriggerAll();
 
-        $this->assertAlterTableQuery($builder, 'ALTER TABLE users DISABLE TRIGGER ALL');
+        self::assertSame('ALTER TABLE users DISABLE TRIGGER ALL', $builder->toSql());
     }
 
     public function test_alter_table_disable_trigger_user() : void
@@ -34,7 +31,7 @@ public function test_alter_table_disable_trigger_user() : void
         $builder = alter()->table('users')
             ->disableTriggerUser();
 
-        $this->assertAlterTableQuery($builder, 'ALTER TABLE users DISABLE TRIGGER USER');
+        self::assertSame('ALTER TABLE users DISABLE TRIGGER USER', $builder->toSql());
     }
 
     public function test_alter_table_enable_trigger() : void
@@ -42,7 +39,7 @@ public function test_alter_table_enable_trigger() : void
         $builder = alter()->table('users')
             ->enableTrigger('audit_trigger');
 
-        $this->assertAlterTableQuery($builder, 'ALTER TABLE users ENABLE TRIGGER audit_trigger');
+        self::assertSame('ALTER TABLE users ENABLE TRIGGER audit_trigger', $builder->toSql());
     }
 
     public function test_alter_table_enable_trigger_all() : void
@@ -50,7 +47,7 @@ public function test_alter_table_enable_trigger_all() : void
         $builder = alter()->table('users')
             ->enableTriggerAll();
 
-        $this->assertAlterTableQuery($builder, 'ALTER TABLE users ENABLE TRIGGER ALL');
+        self::assertSame('ALTER TABLE users ENABLE TRIGGER ALL', $builder->toSql());
     }
 
     public function test_alter_table_enable_trigger_always() : void
@@ -58,7 +55,7 @@ public function test_alter_table_enable_trigger_always() : void
         $builder = alter()->table('users')
             ->enableTriggerAlways('audit_trigger');
 
-        $this->assertAlterTableQuery($builder, 'ALTER TABLE users ENABLE ALWAYS TRIGGER audit_trigger');
+        self::assertSame('ALTER TABLE users ENABLE ALWAYS TRIGGER audit_trigger', $builder->toSql());
     }
 
     public function test_alter_table_enable_trigger_replica() : void
@@ -66,7 +63,7 @@ public function test_alter_table_enable_trigger_replica() : void
         $builder = alter()->table('users')
             ->enableTriggerReplica('audit_trigger');
 
-        $this->assertAlterTableQuery($builder, 'ALTER TABLE users ENABLE REPLICA TRIGGER audit_trigger');
+        self::assertSame('ALTER TABLE users ENABLE REPLICA TRIGGER audit_trigger', $builder->toSql());
     }
 
     public function test_alter_table_enable_trigger_user() : void
@@ -74,7 +71,7 @@ public function test_alter_table_enable_trigger_user() : void
         $builder = alter()->table('users')
             ->enableTriggerUser();
 
-        $this->assertAlterTableQuery($builder, 'ALTER TABLE users ENABLE TRIGGER USER');
+        self::assertSame('ALTER TABLE users ENABLE TRIGGER USER', $builder->toSql());
     }
 
     public function test_alter_trigger_depends_on_extension() : void
@@ -83,7 +80,7 @@ public function test_alter_trigger_depends_on_extension() : void
             ->on('users')
             ->dependsOnExtension('my_extension');
 
-        $this->assertAlterTriggerDependsQuery($builder, 'ALTER TRIGGER my_trigger ON users DEPENDS ON EXTENSION my_extension');
+        self::assertSame('ALTER TRIGGER my_trigger ON users DEPENDS ON EXTENSION my_extension', $builder->toSql());
     }
 
     public function test_alter_trigger_no_depends_on_extension() : void
@@ -92,7 +89,7 @@ public function test_alter_trigger_no_depends_on_extension() : void
             ->on('users')
             ->noDependsOnExtension('my_extension');
 
-        $this->assertAlterTriggerDependsQuery($builder, 'ALTER TRIGGER my_trigger ON users NO DEPENDS ON EXTENSION my_extension');
+        self::assertSame('ALTER TRIGGER my_trigger ON users NO DEPENDS ON EXTENSION my_extension', $builder->toSql());
     }
 
     public function test_alter_trigger_rename() : void
@@ -101,7 +98,7 @@ public function test_alter_trigger_rename() : void
             ->on('users')
             ->renameTo('new_trigger');
 
-        $this->assertAlterTriggerRenameQuery($builder, 'ALTER TRIGGER old_trigger ON users RENAME TO new_trigger');
+        self::assertSame('ALTER TRIGGER old_trigger ON users RENAME TO new_trigger', $builder->toSql());
     }
 
     public function test_create_trigger_after_insert() : void
@@ -111,7 +108,7 @@ public function test_create_trigger_after_insert() : void
             ->on('users')
             ->execute('audit_function');
 
-        $this->assertCreateTriggerQuery($builder, 'CREATE TRIGGER audit_trigger AFTER INSERT ON users EXECUTE FUNCTION audit_function()');
+        self::assertSame('CREATE TRIGGER audit_trigger AFTER INSERT ON users EXECUTE FUNCTION audit_function()', $builder->toSql());
     }
 
     public function test_create_trigger_after_insert_or_update() : void
@@ -122,7 +119,7 @@ public function test_create_trigger_after_insert_or_update() : void
             ->forEachRow()
             ->execute('audit_function');
 
-        $this->assertCreateTriggerQuery($builder, 'CREATE TRIGGER audit_trigger AFTER INSERT OR UPDATE ON users FOR EACH ROW EXECUTE FUNCTION audit_function()');
+        self::assertSame('CREATE TRIGGER audit_trigger AFTER INSERT OR UPDATE ON users FOR EACH ROW EXECUTE FUNCTION audit_function()', $builder->toSql());
     }
 
     public function test_create_trigger_after_update_of_columns() : void
@@ -133,7 +130,7 @@ public function test_create_trigger_after_update_of_columns() : void
             ->forEachRow()
             ->execute('track_changes_function');
 
-        $this->assertCreateTriggerQuery($builder, 'CREATE TRIGGER track_changes AFTER UPDATE OF status, updated_at ON orders FOR EACH ROW EXECUTE FUNCTION track_changes_function()');
+        self::assertSame('CREATE TRIGGER track_changes AFTER UPDATE OF status, updated_at ON orders FOR EACH ROW EXECUTE FUNCTION track_changes_function()', $builder->toSql());
     }
 
     public function test_create_trigger_before_delete_with_when() : void
@@ -142,10 +139,10 @@ public function test_create_trigger_before_delete_with_when() : void
             ->before(TriggerEvent::DELETE)
             ->on('users')
             ->forEachRow()
-            ->when(raw_cond('OLD.protected = true'))
+            ->when(eq(col('protected', 'old'), literal(true)))
             ->execute('raise_exception');
 
-        $this->assertCreateTriggerQuery($builder, 'CREATE TRIGGER prevent_delete BEFORE DELETE ON users FOR EACH ROW WHEN (old.protected = true) EXECUTE FUNCTION raise_exception()');
+        self::assertSame('CREATE TRIGGER prevent_delete BEFORE DELETE ON users FOR EACH ROW WHEN (old.protected = true) EXECUTE FUNCTION raise_exception()', $builder->toSql());
     }
 
     public function test_create_trigger_constraint_deferrable() : void
@@ -160,7 +157,7 @@ public function test_create_trigger_constraint_deferrable() : void
             ->forEachRow()
             ->execute('check_fk');
 
-        $this->assertCreateTriggerQuery($builder, 'CREATE CONSTRAINT TRIGGER fk_trigger AFTER INSERT ON orders FROM users DEFERRABLE INITIALLY DEFERRED FOR EACH ROW EXECUTE FUNCTION check_fk()');
+        self::assertSame('CREATE CONSTRAINT TRIGGER fk_trigger AFTER INSERT ON orders FROM users DEFERRABLE INITIALLY DEFERRED FOR EACH ROW EXECUTE FUNCTION check_fk()', $builder->toSql());
     }
 
     public function test_create_trigger_instead_of_on_view() : void
@@ -171,7 +168,7 @@ public function test_create_trigger_instead_of_on_view() : void
             ->forEachRow()
             ->execute('insert_to_users');
 
-        $this->assertCreateTriggerQuery($builder, 'CREATE TRIGGER view_insert INSTEAD OF INSERT ON users_view FOR EACH ROW EXECUTE FUNCTION insert_to_users()');
+        self::assertSame('CREATE TRIGGER view_insert INSTEAD OF INSERT ON users_view FOR EACH ROW EXECUTE FUNCTION insert_to_users()', $builder->toSql());
     }
 
     public function test_create_trigger_or_replace() : void
@@ -182,7 +179,7 @@ public function test_create_trigger_or_replace() : void
             ->on('users')
             ->execute('audit_function');
 
-        $this->assertCreateTriggerQuery($builder, 'CREATE OR REPLACE TRIGGER audit_trigger AFTER INSERT ON users EXECUTE FUNCTION audit_function()');
+        self::assertSame('CREATE OR REPLACE TRIGGER audit_trigger AFTER INSERT ON users EXECUTE FUNCTION audit_function()', $builder->toSql());
     }
 
     public function test_create_trigger_with_referencing() : void
@@ -193,7 +190,7 @@ public function test_create_trigger_with_referencing() : void
             ->referencingNewTableAs('inserted_rows')
             ->execute('process_batch');
 
-        $this->assertCreateTriggerQuery($builder, 'CREATE TRIGGER statement_trigger AFTER INSERT ON users REFERENCING NEW TABLE inserted_rows EXECUTE FUNCTION process_batch()');
+        self::assertSame('CREATE TRIGGER statement_trigger AFTER INSERT ON users REFERENCING NEW TABLE inserted_rows EXECUTE FUNCTION process_batch()', $builder->toSql());
     }
 
     public function test_create_trigger_with_schema() : void
@@ -203,7 +200,7 @@ public function test_create_trigger_with_schema() : void
             ->on('public.users')
             ->execute('audit_function');
 
-        $this->assertCreateTriggerQuery($builder, 'CREATE TRIGGER audit_trigger AFTER INSERT ON public.users EXECUTE FUNCTION audit_function()');
+        self::assertSame('CREATE TRIGGER audit_trigger AFTER INSERT ON public.users EXECUTE FUNCTION audit_function()', $builder->toSql());
     }
 
     public function test_drop_trigger() : void
@@ -211,7 +208,7 @@ public function test_drop_trigger() : void
         $builder = drop()->trigger('audit_trigger')
             ->on('users');
 
-        $this->assertDropTriggerQuery($builder, 'DROP TRIGGER audit_trigger ON users');
+        self::assertSame('DROP TRIGGER audit_trigger ON users', $builder->toSql());
     }
 
     public function test_drop_trigger_cascade() : void
@@ -220,7 +217,7 @@ public function test_drop_trigger_cascade() : void
             ->on('users')
             ->cascade();
 
-        $this->assertDropTriggerQuery($builder, 'DROP TRIGGER audit_trigger ON users CASCADE');
+        self::assertSame('DROP TRIGGER audit_trigger ON users CASCADE', $builder->toSql());
     }
 
     public function test_drop_trigger_if_exists() : void
@@ -229,7 +226,7 @@ public function test_drop_trigger_if_exists() : void
             ->ifExists()
             ->on('users');
 
-        $this->assertDropTriggerQuery($builder, 'DROP TRIGGER IF EXISTS audit_trigger ON users');
+        self::assertSame('DROP TRIGGER IF EXISTS audit_trigger ON users', $builder->toSql());
     }
 
     public function test_drop_trigger_with_schema() : void
@@ -238,6 +235,6 @@ public function test_drop_trigger_with_schema() : void
             ->on('public.users')
             ->restrict();
 
-        $this->assertDropTriggerQuery($builder, 'DROP TRIGGER audit_trigger ON public.users');
+        self::assertSame('DROP TRIGGER audit_trigger ON public.users', $builder->toSql());
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Type/TypeAttributeTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Type/TypeAttributeTest.php
index ab3e9994be..6b60a7242c 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Type/TypeAttributeTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Type/TypeAttributeTest.php
@@ -4,7 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Type;
 
-use Flow\PostgreSql\QueryBuilder\Schema\DataType;
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
 use Flow\PostgreSql\QueryBuilder\Schema\Type\TypeAttribute;
 use PHPUnit\Framework\TestCase;
 
@@ -12,27 +12,27 @@ final class TypeAttributeTest extends TestCase
 {
     public function test_type_attribute_basic() : void
     {
-        $attr = TypeAttribute::of('name', DataType::text());
+        $attr = TypeAttribute::of('name', ColumnType::text());
 
         self::assertSame('name', $attr->name);
-        self::assertInstanceOf(DataType::class, $attr->type);
+        self::assertInstanceOf(ColumnType::class, $attr->type);
         self::assertNull($attr->collation);
     }
 
     public function test_type_attribute_different_types() : void
     {
-        $intAttr = TypeAttribute::of('count', DataType::integer());
-        $boolAttr = TypeAttribute::of('active', DataType::boolean());
-        $numericAttr = TypeAttribute::of('price', DataType::numeric(10, 2));
+        $intAttr = TypeAttribute::of('count', ColumnType::integer());
+        $boolAttr = TypeAttribute::of('active', ColumnType::boolean());
+        $numericAttr = TypeAttribute::of('price', ColumnType::numeric(10, 2));
 
-        self::assertInstanceOf(DataType::class, $intAttr->type);
-        self::assertInstanceOf(DataType::class, $boolAttr->type);
-        self::assertInstanceOf(DataType::class, $numericAttr->type);
+        self::assertInstanceOf(ColumnType::class, $intAttr->type);
+        self::assertInstanceOf(ColumnType::class, $boolAttr->type);
+        self::assertInstanceOf(ColumnType::class, $numericAttr->type);
     }
 
     public function test_type_attribute_immutability() : void
     {
-        $original = TypeAttribute::of('name', DataType::text());
+        $original = TypeAttribute::of('name', ColumnType::text());
         $modified = $original->collate('en_US');
 
         self::assertNull($original->collation);
@@ -41,11 +41,11 @@ public function test_type_attribute_immutability() : void
 
     public function test_type_attribute_with_collation() : void
     {
-        $attr = TypeAttribute::of('name', DataType::text())
+        $attr = TypeAttribute::of('name', ColumnType::text())
             ->collate('en_US');
 
         self::assertSame('name', $attr->name);
-        self::assertInstanceOf(DataType::class, $attr->type);
+        self::assertInstanceOf(ColumnType::class, $attr->type);
         self::assertSame('en_US', $attr->collation);
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Type/TypeBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Type/TypeBuilderTest.php
index 3017e996cd..cb8e3a8ee6 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Type/TypeBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/Type/TypeBuilderTest.php
@@ -4,7 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\Type;
 
-use function Flow\PostgreSql\DSL\{data_type_text, data_type_varchar};
+use function Flow\PostgreSql\DSL\{alter, column_type_text, column_type_varchar, create, drop, type_attr};
 use Flow\PostgreSql\Protobuf\AST\{AlterEnumStmt, CompositeTypeStmt, CreateEnumStmt, CreateRangeStmt, DropBehavior, DropStmt, ObjectType};
 use Flow\PostgreSql\QueryBuilder\Schema\Type\{AlterEnumTypeBuilder, CreateCompositeTypeBuilder, CreateEnumTypeBuilder, CreateRangeTypeBuilder, DropTypeBuilder, TypeAttribute};
 
@@ -54,6 +54,17 @@ public function test_alter_enum_type_add_value_before() : void
         self::assertFalse($ast->getNewValIsAfter());
     }
 
+    public function test_alter_enum_type_add_value_if_not_exists_to_sql() : void
+    {
+        self::assertSame(
+            "ALTER TYPE status ADD VALUE IF NOT EXISTS 'archived'",
+            alter()->enumType('status')
+                ->addValue('archived')
+                ->ifNotExists()
+                ->toSql()
+        );
+    }
+
     public function test_alter_enum_type_ast_type() : void
     {
         $builder = AlterEnumTypeBuilder::create('status')
@@ -89,7 +100,7 @@ public function test_alter_enum_type_rename_value() : void
     public function test_create_composite_type_ast_type() : void
     {
         $builder = CreateCompositeTypeBuilder::create('address')
-            ->attributes(TypeAttribute::of('street', data_type_text()));
+            ->attributes(TypeAttribute::of('street', column_type_text()));
 
         $ast = $builder->toAst();
 
@@ -100,9 +111,9 @@ public function test_create_composite_type_sets_attributes() : void
     {
         $builder = CreateCompositeTypeBuilder::create('address')
             ->attributes(
-                TypeAttribute::of('street', data_type_text()),
-                TypeAttribute::of('city', data_type_text()),
-                TypeAttribute::of('zip', data_type_varchar(50))
+                TypeAttribute::of('street', column_type_text()),
+                TypeAttribute::of('city', column_type_text()),
+                TypeAttribute::of('zip', column_type_varchar(50))
             );
 
         $ast = $builder->toAst();
@@ -114,7 +125,7 @@ public function test_create_composite_type_sets_attributes() : void
     public function test_create_composite_type_sets_name() : void
     {
         $builder = CreateCompositeTypeBuilder::create('address')
-            ->attributes(TypeAttribute::of('street', data_type_text()));
+            ->attributes(TypeAttribute::of('street', column_type_text()));
 
         $ast = $builder->toAst();
         $typevar = $ast->getTypevar();
@@ -123,10 +134,24 @@ public function test_create_composite_type_sets_name() : void
         self::assertSame('address', $typevar->getRelname());
     }
 
+    public function test_create_composite_type_simple_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE TYPE address AS (street pg_catalog.text, city pg_catalog.text, zip pg_catalog.text)',
+            create()->compositeType('address')
+                ->attributes(
+                    type_attr('street', column_type_text()),
+                    type_attr('city', column_type_text()),
+                    type_attr('zip', column_type_text())
+                )
+                ->toSql()
+        );
+    }
+
     public function test_create_composite_type_with_collation() : void
     {
         $builder = CreateCompositeTypeBuilder::create('address')
-            ->attributes(TypeAttribute::of('name', data_type_text())->collate('en_US'));
+            ->attributes(TypeAttribute::of('name', column_type_text())->collate('en_US'));
 
         $ast = $builder->toAst();
         $coldeflist = $ast->getColdeflist();
@@ -141,7 +166,7 @@ public function test_create_composite_type_with_collation() : void
     public function test_create_composite_type_with_schema() : void
     {
         $builder = CreateCompositeTypeBuilder::create('public.address')
-            ->attributes(TypeAttribute::of('street', data_type_text()));
+            ->attributes(TypeAttribute::of('street', column_type_text()));
 
         $ast = $builder->toAst();
         $typevar = $ast->getTypevar();
@@ -183,6 +208,16 @@ public function test_create_enum_type_sets_name() : void
         self::assertCount(1, $typeName);
     }
 
+    public function test_create_enum_type_simple_to_sql() : void
+    {
+        self::assertSame(
+            "CREATE TYPE status AS ENUM ('pending', 'active', 'closed')",
+            create()->enumType('status')
+                ->labels('pending', 'active', 'closed')
+                ->toSql()
+        );
+    }
+
     public function test_create_enum_type_with_schema() : void
     {
         $builder = CreateEnumTypeBuilder::create('public.status')
@@ -230,6 +265,27 @@ public function test_create_range_type_sets_subtype() : void
         self::assertSame('subtype', $defElem->getDefname());
     }
 
+    public function test_create_range_type_simple_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE TYPE floatrange AS RANGE (subtype = float8)',
+            create()->rangeType('floatrange')
+                ->subtype('float8')
+                ->toSql()
+        );
+    }
+
+    public function test_create_range_type_with_collation_to_sql() : void
+    {
+        self::assertSame(
+            "CREATE TYPE textrange AS RANGE (subtype = text, \"collation\" = 'en_US')",
+            create()->rangeType('textrange')
+                ->subtype('text')
+                ->collation('en_US')
+                ->toSql()
+        );
+    }
+
     public function test_create_range_type_with_options() : void
     {
         $builder = CreateRangeTypeBuilder::create('floatrange')
@@ -284,6 +340,17 @@ public function test_drop_type_if_exists() : void
         self::assertTrue($ast->getMissingOk());
     }
 
+    public function test_drop_type_if_exists_cascade_to_sql() : void
+    {
+        self::assertSame(
+            'DROP TYPE IF EXISTS address CASCADE',
+            drop()->type('address')
+                ->ifExists()
+                ->cascade()
+                ->toSql()
+        );
+    }
+
     public function test_drop_type_immutability() : void
     {
         $original = DropTypeBuilder::create('address');
@@ -293,6 +360,15 @@ public function test_drop_type_immutability() : void
         self::assertTrue($modified->toAst()->getMissingOk());
     }
 
+    public function test_drop_type_multiple_to_sql() : void
+    {
+        self::assertSame(
+            'DROP TYPE address, status, floatrange',
+            drop()->type('address', 'status', 'floatrange')
+                ->toSql()
+        );
+    }
+
     public function test_drop_type_multiple_types() : void
     {
         $builder = DropTypeBuilder::create('address', 'status', 'priority');
@@ -311,4 +387,13 @@ public function test_drop_type_restrict() : void
 
         self::assertSame(DropBehavior::DROP_RESTRICT, $ast->getBehavior());
     }
+
+    public function test_drop_type_simple_to_sql() : void
+    {
+        self::assertSame(
+            'DROP TYPE address',
+            drop()->type('address')
+                ->toSql()
+        );
+    }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/View/ViewBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/View/ViewBuilderTest.php
index d64085c25b..ef0f4fa5f1 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/View/ViewBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Schema/View/ViewBuilderTest.php
@@ -4,7 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Schema\View;
 
-use function Flow\PostgreSql\DSL\{star, table};
+use function Flow\PostgreSql\DSL\{alter, col, create, drop, eq, literal, refresh_materialized_view, select, star, table};
 use Flow\PostgreSql\Protobuf\AST\{AlterObjectSchemaStmt, AlterTableStmt, CreateTableAsStmt, DropStmt, ObjectType, RefreshMatViewStmt, RenameStmt, ViewStmt};
 use Flow\PostgreSql\QueryBuilder\Schema\View\AlterMaterializedView\AlterMaterializedViewBuilder;
 use Flow\PostgreSql\QueryBuilder\Schema\View\AlterView\AlterViewBuilder;
@@ -25,6 +25,38 @@ protected function setUp() : void
         }
     }
 
+    public function test_alter_materialized_view_owner_to_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER MATERIALIZED VIEW my_matview OWNER TO new_owner',
+            alter()->materializedView('my_matview')->ownerTo('new_owner')->toSql()
+        );
+    }
+
+    public function test_alter_materialized_view_rename_if_exists_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER MATERIALIZED VIEW IF EXISTS old_matview RENAME TO new_matview',
+            alter()->materializedView('old_matview')->ifExists()->renameTo('new_matview')->toSql()
+        );
+    }
+
+    public function test_alter_materialized_view_rename_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER MATERIALIZED VIEW old_matview RENAME TO new_matview',
+            alter()->materializedView('old_matview')->renameTo('new_matview')->toSql()
+        );
+    }
+
+    public function test_alter_materialized_view_set_schema_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER MATERIALIZED VIEW my_matview SET SCHEMA archive',
+            alter()->materializedView('my_matview')->setSchema('archive')->toSql()
+        );
+    }
+
     public function test_alter_materialized_view_set_tablespace_ast_type() : void
     {
         $builder = AlterMaterializedViewBuilder::create('my_matview')
@@ -46,6 +78,22 @@ public function test_alter_materialized_view_set_tablespace_if_exists_sets_flag(
         self::assertTrue($ast->getMissingOk());
     }
 
+    public function test_alter_materialized_view_set_tablespace_if_exists_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER MATERIALIZED VIEW IF EXISTS my_matview SET TABLESPACE fast_storage',
+            alter()->materializedView('my_matview')->ifExists()->setTablespace('fast_storage')->toSql()
+        );
+    }
+
+    public function test_alter_materialized_view_set_tablespace_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER MATERIALIZED VIEW my_matview SET TABLESPACE fast_storage',
+            alter()->materializedView('my_matview')->setTablespace('fast_storage')->toSql()
+        );
+    }
+
     public function test_alter_view_owner_to_ast_type() : void
     {
         $builder = AlterViewBuilder::create('my_view')
@@ -57,6 +105,14 @@ public function test_alter_view_owner_to_ast_type() : void
         self::assertSame(ObjectType::OBJECT_VIEW, $ast->getObjtype());
     }
 
+    public function test_alter_view_owner_to_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER VIEW my_view OWNER TO new_owner',
+            alter()->view('my_view')->ownerTo('new_owner')->toSql()
+        );
+    }
+
     public function test_alter_view_rename_ast_type() : void
     {
         $builder = AlterViewBuilder::create('old_view')
@@ -78,6 +134,30 @@ public function test_alter_view_rename_if_exists_sets_flag() : void
         self::assertTrue($ast->getMissingOk());
     }
 
+    public function test_alter_view_rename_if_exists_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER VIEW IF EXISTS old_view RENAME TO new_view',
+            alter()->view('old_view')->ifExists()->renameTo('new_view')->toSql()
+        );
+    }
+
+    public function test_alter_view_rename_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER VIEW old_view RENAME TO new_view',
+            alter()->view('old_view')->renameTo('new_view')->toSql()
+        );
+    }
+
+    public function test_alter_view_rename_with_schema_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER VIEW public.old_view RENAME TO new_view',
+            alter()->view('public.old_view')->renameTo('new_view')->toSql()
+        );
+    }
+
     public function test_alter_view_set_schema_ast_type() : void
     {
         $builder = AlterViewBuilder::create('my_view')
@@ -89,6 +169,22 @@ public function test_alter_view_set_schema_ast_type() : void
         self::assertSame('archive', $ast->getNewschema());
     }
 
+    public function test_alter_view_set_schema_if_exists_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER VIEW IF EXISTS my_view SET SCHEMA archive',
+            alter()->view('my_view')->ifExists()->setSchema('archive')->toSql()
+        );
+    }
+
+    public function test_alter_view_set_schema_to_sql() : void
+    {
+        self::assertSame(
+            'ALTER VIEW my_view SET SCHEMA archive',
+            alter()->view('my_view')->setSchema('archive')->toSql()
+        );
+    }
+
     public function test_create_materialized_view_ast_type() : void
     {
         $builder = CreateMaterializedViewBuilder::create('my_matview')
@@ -111,6 +207,17 @@ public function test_create_materialized_view_if_not_exists_sets_flag() : void
         self::assertTrue($ast->getIfNotExists());
     }
 
+    public function test_create_materialized_view_if_not_exists_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE MATERIALIZED VIEW IF NOT EXISTS user_stats AS SELECT * FROM users',
+            create()->materializedView('user_stats')
+                ->ifNotExists()
+                ->as(select(star())->from(table('users')))
+                ->toSql()
+        );
+    }
+
     public function test_create_materialized_view_parses_schema_from_name() : void
     {
         $builder = CreateMaterializedViewBuilder::create('analytics.my_matview')
@@ -126,6 +233,27 @@ public function test_create_materialized_view_parses_schema_from_name() : void
         self::assertSame('my_matview', $rel->getRelname());
     }
 
+    public function test_create_materialized_view_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE MATERIALIZED VIEW user_stats AS SELECT * FROM users',
+            create()->materializedView('user_stats')
+                ->as(select(star())->from(table('users')))
+                ->toSql()
+        );
+    }
+
+    public function test_create_materialized_view_using_access_method_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE MATERIALIZED VIEW user_stats USING heap AS SELECT * FROM users',
+            create()->materializedView('user_stats')
+                ->using('heap')
+                ->as(select(star())->from(table('users')))
+                ->toSql()
+        );
+    }
+
     public function test_create_materialized_view_with_columns() : void
     {
         $builder = CreateMaterializedViewBuilder::create('my_matview')
@@ -139,6 +267,17 @@ public function test_create_materialized_view_with_columns() : void
         self::assertCount(2, $into->getColNames());
     }
 
+    public function test_create_materialized_view_with_data_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE MATERIALIZED VIEW user_stats AS SELECT * FROM users',
+            create()->materializedView('user_stats')
+                ->as(select()->select(star())->from(table('users')))
+                ->withData()
+                ->toSql()
+        );
+    }
+
     public function test_create_materialized_view_with_no_data_sets_flag() : void
     {
         $builder = CreateMaterializedViewBuilder::create('my_matview')
@@ -152,6 +291,27 @@ public function test_create_materialized_view_with_no_data_sets_flag() : void
         self::assertTrue($into->getSkipData());
     }
 
+    public function test_create_materialized_view_with_no_data_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE MATERIALIZED VIEW user_stats AS SELECT * FROM users  WITH NO DATA',
+            create()->materializedView('user_stats')
+                ->as(select()->select(star())->from(table('users')))
+                ->withNoData()
+                ->toSql()
+        );
+    }
+
+    public function test_create_materialized_view_with_schema_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE MATERIALIZED VIEW analytics.user_stats AS SELECT * FROM users',
+            create()->materializedView('analytics.user_stats')
+                ->as(select(star())->from(table('users')))
+                ->toSql()
+        );
+    }
+
     public function test_create_materialized_view_with_tablespace() : void
     {
         $builder = CreateMaterializedViewBuilder::create('my_matview')
@@ -165,6 +325,40 @@ public function test_create_materialized_view_with_tablespace() : void
         self::assertSame('fast_storage', $into->getTableSpaceName());
     }
 
+    public function test_create_or_replace_view_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE OR REPLACE VIEW active_users AS SELECT * FROM users',
+            create()->view('active_users')
+                ->orReplace()
+                ->as(select(star())->from(table('users')))
+                ->toSql()
+        );
+    }
+
+    public function test_create_recursive_view_outputs_as_regular_view_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE VIEW subordinates (id, name, manager_id) AS SELECT id, name, manager_id FROM employees',
+            create()->view('subordinates')
+                ->recursive()
+                ->columns('id', 'name', 'manager_id')
+                ->as(select(col('id'), col('name'), col('manager_id'))->from(table('employees')))
+                ->toSql()
+        );
+    }
+
+    public function test_create_temporary_view_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE TEMPORARY VIEW temp_users AS SELECT * FROM users',
+            create()->view('temp_users')
+                ->temporary()
+                ->as(select(star())->from(table('users')))
+                ->toSql()
+        );
+    }
+
     public function test_create_view_ast_type() : void
     {
         $builder = CreateViewBuilder::create('my_view')
@@ -211,6 +405,38 @@ public function test_create_view_parses_schema_from_name() : void
         self::assertSame('my_view', $view->getRelname());
     }
 
+    public function test_create_view_simple_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE VIEW active_users AS SELECT * FROM users',
+            create()->view('active_users')
+                ->as(select(star())->from(table('users')))
+                ->toSql()
+        );
+    }
+
+    public function test_create_view_with_cascaded_check_option_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE VIEW active_users AS SELECT * FROM users WITH CHECK OPTION',
+            create()->view('active_users')
+                ->as(select()->select(star())->from(table('users')))
+                ->withCascadedCheckOption()
+                ->toSql()
+        );
+    }
+
+    public function test_create_view_with_check_option_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE VIEW active_users AS SELECT * FROM users WHERE active = true WITH CHECK OPTION',
+            create()->view('active_users')
+                ->as(select(star())->from(table('users'))->where(eq(col('active'), literal(true))))
+                ->withCheckOption()
+                ->toSql()
+        );
+    }
+
     public function test_create_view_with_columns() : void
     {
         $builder = CreateViewBuilder::create('my_view')
@@ -222,6 +448,27 @@ public function test_create_view_with_columns() : void
         self::assertCount(3, $ast->getAliases());
     }
 
+    public function test_create_view_with_local_check_option_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE VIEW active_users AS SELECT * FROM users WITH LOCAL CHECK OPTION',
+            create()->view('active_users')
+                ->as(select()->select(star())->from(table('users')))
+                ->withLocalCheckOption()
+                ->toSql()
+        );
+    }
+
+    public function test_create_view_with_schema_to_sql() : void
+    {
+        self::assertSame(
+            'CREATE VIEW public.active_users AS SELECT * FROM users',
+            create()->view('public.active_users')
+                ->as(select(star())->from(table('users')))
+                ->toSql()
+        );
+    }
+
     public function test_drop_materialized_view_ast_type() : void
     {
         $builder = DropMaterializedViewBuilder::create('my_matview');
@@ -232,6 +479,22 @@ public function test_drop_materialized_view_ast_type() : void
         self::assertSame(ObjectType::OBJECT_MATVIEW, $ast->getRemoveType());
     }
 
+    public function test_drop_materialized_view_if_exists_cascade_to_sql() : void
+    {
+        self::assertSame(
+            'DROP MATERIALIZED VIEW IF EXISTS user_stats CASCADE',
+            drop()->materializedView('user_stats')->ifExists()->cascade()->toSql()
+        );
+    }
+
+    public function test_drop_materialized_view_simple_to_sql() : void
+    {
+        self::assertSame(
+            'DROP MATERIALIZED VIEW user_stats',
+            drop()->materializedView('user_stats')->toSql()
+        );
+    }
+
     public function test_drop_view_ast_type() : void
     {
         $builder = DropViewBuilder::create('my_view');
@@ -242,6 +505,22 @@ public function test_drop_view_ast_type() : void
         self::assertSame(ObjectType::OBJECT_VIEW, $ast->getRemoveType());
     }
 
+    public function test_drop_view_cascade_to_sql() : void
+    {
+        self::assertSame(
+            'DROP VIEW active_users CASCADE',
+            drop()->view('active_users')->cascade()->toSql()
+        );
+    }
+
+    public function test_drop_view_if_exists_cascade_to_sql() : void
+    {
+        self::assertSame(
+            'DROP VIEW IF EXISTS active_users CASCADE',
+            drop()->view('active_users')->ifExists()->cascade()->toSql()
+        );
+    }
+
     public function test_drop_view_if_exists_sets_flag() : void
     {
         $builder = DropViewBuilder::create('my_view')
@@ -252,6 +531,22 @@ public function test_drop_view_if_exists_sets_flag() : void
         self::assertTrue($ast->getMissingOk());
     }
 
+    public function test_drop_view_if_exists_to_sql() : void
+    {
+        self::assertSame(
+            'DROP VIEW IF EXISTS active_users',
+            drop()->view('active_users')->ifExists()->toSql()
+        );
+    }
+
+    public function test_drop_view_multiple_to_sql() : void
+    {
+        self::assertSame(
+            'DROP VIEW view1, view2, view3',
+            drop()->view('view1', 'view2', 'view3')->toSql()
+        );
+    }
+
     public function test_drop_view_multiple_views() : void
     {
         $builder = DropViewBuilder::create('view1', 'view2', 'view3');
@@ -261,6 +556,14 @@ public function test_drop_view_multiple_views() : void
         self::assertCount(3, $ast->getObjects());
     }
 
+    public function test_drop_view_simple_to_sql() : void
+    {
+        self::assertSame(
+            'DROP VIEW active_users',
+            drop()->view('active_users')->toSql()
+        );
+    }
+
     public function test_refresh_materialized_view_ast_type() : void
     {
         $builder = RefreshMaterializedViewBuilder::create('my_matview');
@@ -280,6 +583,22 @@ public function test_refresh_materialized_view_concurrently_sets_flag() : void
         self::assertTrue($ast->getConcurrent());
     }
 
+    public function test_refresh_materialized_view_concurrently_to_sql() : void
+    {
+        self::assertSame(
+            'REFRESH MATERIALIZED VIEW CONCURRENTLY user_stats',
+            refresh_materialized_view('user_stats')->concurrently()->toSql()
+        );
+    }
+
+    public function test_refresh_materialized_view_concurrently_with_data_to_sql() : void
+    {
+        self::assertSame(
+            'REFRESH MATERIALIZED VIEW CONCURRENTLY user_stats',
+            refresh_materialized_view('user_stats')->concurrently()->withData()->toSql()
+        );
+    }
+
     public function test_refresh_materialized_view_parses_schema_from_name() : void
     {
         $builder = RefreshMaterializedViewBuilder::create('analytics.my_matview');
@@ -292,6 +611,22 @@ public function test_refresh_materialized_view_parses_schema_from_name() : void
         self::assertSame('my_matview', $relation->getRelname());
     }
 
+    public function test_refresh_materialized_view_simple_to_sql() : void
+    {
+        self::assertSame(
+            'REFRESH MATERIALIZED VIEW user_stats',
+            refresh_materialized_view('user_stats')->toSql()
+        );
+    }
+
+    public function test_refresh_materialized_view_with_data_to_sql() : void
+    {
+        self::assertSame(
+            'REFRESH MATERIALIZED VIEW user_stats',
+            refresh_materialized_view('user_stats')->withData()->toSql()
+        );
+    }
+
     public function test_refresh_materialized_view_with_no_data_sets_flag() : void
     {
         $builder = RefreshMaterializedViewBuilder::create('my_matview')
@@ -301,4 +636,20 @@ public function test_refresh_materialized_view_with_no_data_sets_flag() : void
 
         self::assertTrue($ast->getSkipData());
     }
+
+    public function test_refresh_materialized_view_with_no_data_to_sql() : void
+    {
+        self::assertSame(
+            'REFRESH MATERIALIZED VIEW user_stats WITH NO DATA',
+            refresh_materialized_view('user_stats')->withNoData()->toSql()
+        );
+    }
+
+    public function test_refresh_materialized_view_with_schema_to_sql() : void
+    {
+        self::assertSame(
+            'REFRESH MATERIALIZED VIEW analytics.user_stats',
+            refresh_materialized_view('analytics.user_stats')->toSql()
+        );
+    }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Select/SelectBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Select/SelectBuilderTest.php
index 4c18c5f972..72f153a1b5 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Select/SelectBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Select/SelectBuilderTest.php
@@ -4,8 +4,68 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Select;
 
+use function Flow\PostgreSql\DSL\{
+    agg_avg,
+    agg_count,
+    agg_max,
+    agg_min,
+    agg_sum,
+    all_,
+    and_,
+    any_,
+    array_expr,
+    asc,
+    between,
+    binary_expr,
+    case_when,
+    cast,
+    coalesce,
+    col,
+    column_type_integer,
+    column_type_text,
+    cte,
+    current_date,
+    current_time,
+    current_timestamp,
+    derived,
+    desc,
+    distinct_from,
+    eq,
+    exists,
+    func,
+    ge,
+    greatest,
+    gt,
+    in_,
+    is_null,
+    is_true,
+    lateral,
+    le,
+    least,
+    like,
+    literal,
+    lt,
+    ne,
+    not_,
+    nullif,
+    or_,
+    order_by,
+    param,
+    row_expr,
+    select,
+    similar_to,
+    star,
+    sub_select,
+    table,
+    table_func,
+    when,
+    window_def,
+    window_func,
+    with
+};
+
 use Flow\PostgreSql\Protobuf\AST\SelectStmt;
-use Flow\PostgreSql\QueryBuilder\Clause\{OrderBy, SortDirection};
+use Flow\PostgreSql\QueryBuilder\Clause\{CTEMaterialization, NullsPosition, OrderBy, SortDirection};
 use Flow\PostgreSql\QueryBuilder\Condition\{Comparison, ComparisonOperator};
 use Flow\PostgreSql\QueryBuilder\Expression\{AggregateCall, Column, Literal, Star};
 use Flow\PostgreSql\QueryBuilder\Select\SelectBuilder;
@@ -185,6 +245,16 @@ public function test_select_distinct_on() : void
         self::assertCount(1, $distinctClause);
     }
 
+    public function test_select_except_all_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT id FROM all_users EXCEPT ALL SELECT id FROM banned_users',
+            select()->select(col('id'))->from(table('all_users'))
+                ->exceptAll(select()->select(col('id'))->from(table('banned_users')))
+                ->toSql()
+        );
+    }
+
     public function test_select_from_multiple_tables() : void
     {
         $query = SelectBuilder::create()
@@ -198,6 +268,16 @@ public function test_select_from_multiple_tables() : void
         self::assertCount(2, $fromClause);
     }
 
+    public function test_select_intersect_all_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT id FROM users INTERSECT ALL SELECT id FROM admins',
+            select()->select(col('id'))->from(table('users'))
+                ->intersectAll(select()->select(col('id'))->from(table('admins')))
+                ->toSql()
+        );
+    }
+
     public function test_select_only_limit() : void
     {
         $query = SelectBuilder::create()
@@ -241,6 +321,146 @@ public function test_select_star() : void
         self::assertCount(1, $targetList);
     }
 
+    public function test_select_with_aggregates_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT category, count(*), sum(amount), avg(price), min(created_at), max(updated_at) FROM orders GROUP BY category',
+            select()
+                ->select(
+                    col('category'),
+                    agg_count(),
+                    agg_sum(col('amount')),
+                    agg_avg(col('price')),
+                    agg_min(col('created_at')),
+                    agg_max(col('updated_at'))
+                )
+                ->from(table('orders'))
+                ->groupBy(col('category'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_aliased_columns_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT first_name AS fname, last_name AS lname FROM users',
+            select()
+                ->select(col('first_name')->as('fname'), col('last_name')->as('lname'))
+                ->from(table('users'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_all_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM products WHERE price > ALL (SELECT price FROM budget_products)',
+            select()
+                ->select(star())
+                ->from(table('products'))
+                ->where(all_(col('price'), ComparisonOperator::GT, select()->select(col('price'))->from(table('budget_products'))))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_any_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM products WHERE price > ANY (SELECT price FROM discounted_products)',
+            select()
+                ->select(star())
+                ->from(table('products'))
+                ->where(any_(col('price'), ComparisonOperator::GT, select()->select(col('price'))->from(table('discounted_products'))))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_array_constructor_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT ARRAY[1, 2, 3] AS numbers FROM users',
+            select()
+                ->select(array_expr([literal(1), literal(2), literal(3)])->as('numbers'))
+                ->from(table('users'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_array_expression_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM users WHERE id IN (1, 2, 3)',
+            select()
+                ->select(star())
+                ->from(table('users'))
+                ->where(in_(col('id'), [literal(1), literal(2), literal(3)]))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_between_condition_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM products WHERE price BETWEEN 10 AND 100',
+            select()
+                ->select(star())
+                ->from(table('products'))
+                ->where(between(col('price'), literal(10), literal(100)))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_case_expression_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT name, CASE WHEN price > 100 THEN 'expensive' WHEN price > 50 THEN 'moderate' ELSE 'cheap' END AS price_category FROM products",
+            select()
+                ->select(
+                    col('name'),
+                    case_when([
+                        when(binary_expr(col('price'), '>', literal(100)), literal('expensive')),
+                        when(binary_expr(col('price'), '>', literal(50)), literal('moderate')),
+                    ], literal('cheap'))->as('price_category')
+                )
+                ->from(table('products'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_coalesce_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT id, COALESCE(nickname, name, 'Anonymous') AS display_name FROM users",
+            select()
+                ->select(
+                    col('id'),
+                    coalesce(col('nickname'), col('name'), literal('Anonymous'))->as('display_name')
+                )
+                ->from(table('users'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_complex_and_or_conditions_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT * FROM users WHERE status = 'active' AND (age >= 18 OR guardian_approved = true)",
+            select()
+                ->select(star())
+                ->from(table('users'))
+                ->where(
+                    and_(
+                        eq(col('status'), literal('active')),
+                        or_(
+                            ge(col('age'), literal(18)),
+                            eq(col('guardian_approved'), literal(true))
+                        )
+                    )
+                )
+                ->toSql()
+        );
+    }
+
     public function test_select_with_cross_join() : void
     {
         $query = SelectBuilder::create()
@@ -254,6 +474,93 @@ public function test_select_with_cross_join() : void
         self::assertNotNull($fromClause);
     }
 
+    public function test_select_with_cte_materialized_to_sql() : void
+    {
+        self::assertSame(
+            'WITH active_users AS MATERIALIZED (SELECT id, name FROM users WHERE active = true) SELECT * FROM active_users',
+            with(cte('active_users', select()->select(col('id'), col('name'))->from(table('users'))->where(eq(col('active'), literal(true))), [], CTEMaterialization::MATERIALIZED))
+                ->select(star())
+                ->from(table('active_users'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_cte_not_materialized_to_sql() : void
+    {
+        self::assertSame(
+            'WITH active_users AS NOT MATERIALIZED (SELECT id, name FROM users WHERE active = true) SELECT * FROM active_users',
+            with(cte('active_users', select()->select(col('id'), col('name'))->from(table('users'))->where(eq(col('active'), literal(true))), [], CTEMaterialization::NOT_MATERIALIZED))
+                ->select(star())
+                ->from(table('active_users'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_cte_to_sql() : void
+    {
+        self::assertSame(
+            'WITH active_users AS (SELECT id, name FROM users WHERE active = true) SELECT * FROM active_users',
+            with(
+                cte('active_users', select()->select(col('id'), col('name'))->from(table('users'))->where(eq(col('active'), literal(true))))
+            )
+                ->select(star())
+                ->from(table('active_users'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_derived_table_join_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT users.name, order_stats.order_count FROM users JOIN (SELECT user_id, count(*) AS order_count FROM orders GROUP BY user_id) order_stats ON users.id = order_stats.user_id',
+            select()
+                ->select(col('users.name'), col('order_stats.order_count'))
+                ->from(table('users'))
+                ->join(
+                    derived(
+                        select()->select(col('user_id'), agg_count()->as('order_count'))->from(table('orders'))->groupBy(col('user_id')),
+                        'order_stats'
+                    ),
+                    eq(col('users.id'), col('order_stats.user_id'))
+                )
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_derived_table_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT u.name, o.total FROM users u LEFT JOIN (SELECT user_id, sum(amount) AS total FROM orders GROUP BY user_id) o ON u.id = o.user_id',
+            select()
+                ->select(col('u.name'), col('o.total'))
+                ->from(table('users')->as('u'))
+                ->leftJoin(
+                    derived(
+                        select()->select(col('user_id'), agg_sum(col('amount'))->as('total'))->from(table('orders'))->groupBy(col('user_id')),
+                        'o'
+                    ),
+                    eq(col('u.id'), col('o.user_id'))
+                )
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_distinct_count_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT count(DISTINCT user_id) AS unique_users FROM orders',
+            select()->select(agg_count(col('user_id'), true)->as('unique_users'))->from(table('orders'))->toSql()
+        );
+    }
+
+    public function test_select_with_distinct_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT DISTINCT city FROM users',
+            select()->selectDistinct(col('city'))->from(table('users'))->toSql()
+        );
+    }
+
     public function test_select_with_except() : void
     {
         $query1 = SelectBuilder::create()
@@ -272,6 +579,20 @@ public function test_select_with_except() : void
         self::assertNotNull($ast->getRarg());
     }
 
+    public function test_select_with_exists_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM users WHERE EXISTS (SELECT 1 FROM orders WHERE orders.user_id = users.id)',
+            select()
+                ->select(star())
+                ->from(table('users'))
+                ->where(exists(
+                    select()->select(literal(1))->from(table('orders'))->where(eq(col('orders.user_id'), col('users.id')))
+                ))
+                ->toSql()
+        );
+    }
+
     public function test_select_with_for_key_share() : void
     {
         $query = SelectBuilder::create()
@@ -344,6 +665,32 @@ public function test_select_with_full_join() : void
         self::assertNotNull($fromClause);
     }
 
+    public function test_select_with_function_call_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT name, upper(name) AS upper_name, length(name) AS name_length FROM users',
+            select()
+                ->select(
+                    col('name'),
+                    func('upper', [col('name')])->as('upper_name'),
+                    func('length', [col('name')])->as('name_length')
+                )
+                ->from(table('users'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_greatest_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT id, GREATEST(a, b, c) AS max_value FROM numbers',
+            select()
+                ->select(col('id'), greatest(col('a'), col('b'), col('c'))->as('max_value'))
+                ->from(table('numbers'))
+                ->toSql()
+        );
+    }
+
     public function test_select_with_group_by_having() : void
     {
         $query = SelectBuilder::create()
@@ -361,6 +708,18 @@ public function test_select_with_group_by_having() : void
         self::assertNotNull($havingClause);
     }
 
+    public function test_select_with_in_condition_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT * FROM users WHERE status IN ('active', 'pending', 'verified')",
+            select()
+                ->select(star())
+                ->from(table('users'))
+                ->where(in_(col('status'), [literal('active'), literal('pending'), literal('verified')]))
+                ->toSql()
+        );
+    }
+
     public function test_select_with_inner_join() : void
     {
         $query = SelectBuilder::create()
@@ -395,6 +754,30 @@ public function test_select_with_intersect() : void
         self::assertNotNull($ast->getRarg());
     }
 
+    public function test_select_with_is_distinct_from_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM users WHERE status IS DISTINCT FROM NULL',
+            select()->select(star())->from(table('users'))->where(distinct_from(col('status'), literal(null)))->toSql()
+        );
+    }
+
+    public function test_select_with_is_not_distinct_from_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT * FROM users WHERE status IS NOT DISTINCT FROM 'active'",
+            select()->select(star())->from(table('users'))->where(distinct_from(col('status'), literal('active'), true))->toSql()
+        );
+    }
+
+    public function test_select_with_is_null_condition_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM users WHERE deleted_at IS NULL',
+            select()->select(star())->from(table('users'))->where(is_null(col('deleted_at')))->toSql()
+        );
+    }
+
     public function test_select_with_join() : void
     {
         $query = SelectBuilder::create()
@@ -412,6 +795,94 @@ public function test_select_with_join() : void
         self::assertCount(1, $fromClause);
     }
 
+    public function test_select_with_lateral_join_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT u.name, recent.id FROM users u LEFT JOIN LATERAL (SELECT * FROM orders WHERE orders.user_id = u.id ORDER BY created_at DESC LIMIT 3) recent ON true',
+            select()
+                ->select(col('u.name'), col('recent.id'))
+                ->from(table('users')->as('u'))
+                ->leftJoin(
+                    lateral(derived(
+                        select()->select(star())->from(table('orders'))->where(eq(col('orders.user_id'), col('u.id')))->orderBy(desc(col('created_at')))->limit(3),
+                        'recent'
+                    )),
+                    is_true(literal(true))
+                )
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_lateral_subquery_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT users.name, recent_orders.order_id FROM users CROSS JOIN LATERAL (SELECT order_id FROM orders WHERE orders.user_id = users.id ORDER BY created_at DESC LIMIT 5) recent_orders',
+            select()
+                ->select(col('users.name'), col('recent_orders.order_id'))
+                ->from(table('users'))
+                ->crossJoin(lateral(derived(
+                    select()->select(col('order_id'))->from(table('orders'))->where(eq(col('orders.user_id'), col('users.id')))->orderBy(desc(col('created_at')))->limit(5),
+                    'recent_orders'
+                )))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_least_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT id, LEAST(a, b, c) AS min_value FROM numbers',
+            select()
+                ->select(col('id'), least(col('a'), col('b'), col('c'))->as('min_value'))
+                ->from(table('numbers'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_left_join_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT u.name, o.total FROM users u LEFT JOIN orders o ON u.id = o.user_id',
+            select()
+                ->select(col('u.name'), col('o.total'))
+                ->from(table('users')->as('u'))
+                ->leftJoin(table('orders')->as('o'), eq(col('u.id'), col('o.user_id')))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_like_condition_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT * FROM users WHERE email LIKE '%@example.com'",
+            select()->select(star())->from(table('users'))->where(like(col('email'), literal('%@example.com')))->toSql()
+        );
+    }
+
+    public function test_select_with_limit_offset_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM users ORDER BY id ASC LIMIT 10 OFFSET 20',
+            select()->select(star())->from(table('users'))->orderBy(asc(col('id')))->limit(10)->offset(20)->toSql()
+        );
+    }
+
+    public function test_select_with_multiple_conditions_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT * FROM users WHERE active = true AND age >= 18 AND status <> 'banned'",
+            select()
+                ->select(star())
+                ->from(table('users'))
+                ->where(and_(
+                    eq(col('active'), literal(true)),
+                    ge(col('age'), literal(18)),
+                    ne(col('status'), literal('banned'))
+                ))
+                ->toSql()
+        );
+    }
+
     public function test_select_with_multiple_joins() : void
     {
         $query = SelectBuilder::create()
@@ -432,6 +903,33 @@ public function test_select_with_multiple_joins() : void
         self::assertNotNull($fromClause);
     }
 
+    public function test_select_with_not_condition_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT * FROM users WHERE NOT status = 'banned'",
+            select()->select(star())->from(table('users'))->where(not_(eq(col('status'), literal('banned'))))->toSql()
+        );
+    }
+
+    public function test_select_with_nullif_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT id, NULLIF(value, 0) AS safe_value FROM data',
+            select()
+                ->select(col('id'), nullif(col('value'), literal(0))->as('safe_value'))
+                ->from(table('data'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_order_by_asc_desc_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM users ORDER BY last_name ASC, first_name DESC',
+            select()->select(star())->from(table('users'))->orderBy(asc(col('last_name')), desc(col('first_name')))->toSql()
+        );
+    }
+
     public function test_select_with_order_by_multiple_columns() : void
     {
         $query = SelectBuilder::create()
@@ -449,6 +947,21 @@ public function test_select_with_order_by_multiple_columns() : void
         self::assertCount(2, $sortClause);
     }
 
+    public function test_select_with_order_by_nulls_first_last_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM products ORDER BY price ASC NULLS FIRST, name DESC NULLS LAST',
+            select()
+                ->select(star())
+                ->from(table('products'))
+                ->orderBy(
+                    order_by(col('price'), SortDirection::ASC, NullsPosition::FIRST),
+                    order_by(col('name'), SortDirection::DESC, NullsPosition::LAST)
+                )
+                ->toSql()
+        );
+    }
+
     public function test_select_with_order_limit_offset() : void
     {
         $query = SelectBuilder::create()
@@ -469,6 +982,132 @@ public function test_select_with_order_limit_offset() : void
         self::assertNotNull($limitOffset);
     }
 
+    public function test_select_with_parameter_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM users WHERE id = $1',
+            select()->select(star())->from(table('users'))->where(eq(col('id'), param(1)))->toSql()
+        );
+    }
+
+    public function test_select_with_raw_expression_in_select_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT id, 1 + 1 AS two FROM users',
+            select()->select(col('id'), binary_expr(literal(1), '+', literal(1))->as('two'))->from(table('users'))->toSql()
+        );
+    }
+
+    public function test_select_with_raw_expression_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT *, 1 + 1 AS calculated FROM users',
+            select()
+                ->select(star(), binary_expr(literal(1), '+', literal(1))->as('calculated'))
+                ->from(table('users'))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_recursive_cte_window_functions_and_case_expression_to_sql() : void
+    {
+        $orgTreeAnchor = select()
+            ->select(
+                col('id'),
+                col('name'),
+                col('manager_id'),
+                literal(0)->as('level'),
+                cast(col('name'), column_type_text())->as('path')
+            )
+            ->from(table('employees'))
+            ->where(is_null(col('manager_id')));
+
+        $orgTreeRecursive = select()
+            ->select(
+                col('e.id'),
+                col('e.name'),
+                col('e.manager_id'),
+                binary_expr(col('org_tree.level'), '+', literal(1)),
+                binary_expr(
+                    binary_expr(col('org_tree.path'), '||', literal(' -> ')),
+                    '||',
+                    col('e.name')
+                )
+            )
+            ->from(table('employees')->as('e'))
+            ->join(table('org_tree'), eq(col('e.manager_id'), col('org_tree.id')));
+
+        $orgTreeQuery = $orgTreeAnchor->unionAll($orgTreeRecursive);
+
+        $deptStats = select()
+            ->select(
+                col('department_id'),
+                agg_avg(col('salary')),
+                agg_max(col('salary')),
+                agg_count()
+            )
+            ->from(table('employees'))
+            ->groupBy(col('department_id'));
+
+        $rankedEmployees = select()
+            ->select(
+                col('e.id'),
+                col('e.name'),
+                col('e.department_id'),
+                col('e.salary'),
+                window_func('row_number', [], [col('e.department_id')], [desc(col('e.salary'))]),
+                func('round', [
+                    binary_expr(
+                        binary_expr(col('e.salary'), '/', col('ds.max_salary')),
+                        '*',
+                        literal(100)
+                    ),
+                    literal(2),
+                ])
+            )
+            ->from(table('employees')->as('e'))
+            ->join(table('dept_stats')->as('ds'), eq(col('e.department_id'), col('ds.department_id')));
+
+        $query = with(
+            cte('org_tree', $orgTreeQuery, ['id', 'name', 'manager_id', 'level', 'path']),
+            cte('dept_stats', $deptStats, ['department_id', 'avg_salary', 'max_salary', 'employee_count']),
+            cte('ranked_employees', $rankedEmployees, ['id', 'name', 'department_id', 'salary', 'salary_rank', 'pct_of_max'])
+        )
+            ->recursive()
+            ->select(
+                col('org_tree.name')->as('employee'),
+                col('org_tree.level'),
+                col('org_tree.path')->as('reporting_chain'),
+                col('d.name')->as('department'),
+                col('re.salary'),
+                col('re.salary_rank'),
+                col('re.pct_of_max'),
+                col('ds.avg_salary')->as('dept_avg'),
+                case_when([
+                    when(binary_expr(col('re.salary'), '>', col('ds.avg_salary')), literal('Above Average')),
+                ], literal('At/Below Average'))->as('salary_status')
+            )
+            ->from(table('org_tree'))
+            ->join(table('ranked_employees')->as('re'), eq(col('org_tree.id'), col('re.id')))
+            ->join(table('dept_stats')->as('ds'), eq(col('re.department_id'), col('ds.department_id')))
+            ->join(table('departments')->as('d'), eq(col('re.department_id'), col('d.id')))
+            ->where(and_(
+                le(col('org_tree.level'), literal(3)),
+                le(col('re.salary_rank'), literal(5))
+            ))
+            ->orderBy(
+                asc(col('org_tree.level')),
+                asc(col('d.name')),
+                desc(col('re.salary'))
+            );
+
+        $expectedSql = <<<'SQL'
+            WITH RECURSIVE org_tree(id, name, manager_id, level, path) AS (SELECT id, name, manager_id, 0 AS level, name::pg_catalog.text AS path FROM employees WHERE manager_id IS NULL UNION ALL SELECT e.id, e.name, e.manager_id, org_tree.level + 1, (org_tree.path || ' -> ') || e.name FROM employees e JOIN org_tree ON e.manager_id = org_tree.id), dept_stats(department_id, avg_salary, max_salary, employee_count) AS (SELECT department_id, avg(salary), max(salary), count(*) FROM employees GROUP BY department_id), ranked_employees(id, name, department_id, salary, salary_rank, pct_of_max) AS (SELECT e.id, e.name, e.department_id, e.salary, row_number() OVER (PARTITION BY e.department_id ORDER BY e.salary DESC), round((e.salary / ds.max_salary) * 100, 2) FROM employees e JOIN dept_stats ds ON e.department_id = ds.department_id) SELECT org_tree.name AS employee, org_tree.level, org_tree.path AS reporting_chain, d.name AS department, re.salary, re.salary_rank, re.pct_of_max, ds.avg_salary AS dept_avg, CASE WHEN re.salary > ds.avg_salary THEN 'Above Average' ELSE 'At/Below Average' END AS salary_status FROM org_tree JOIN ranked_employees re ON org_tree.id = re.id JOIN dept_stats ds ON re.department_id = ds.department_id JOIN departments d ON re.department_id = d.id WHERE org_tree.level <= 3 AND re.salary_rank <= 5 ORDER BY org_tree.level ASC, d.name ASC, re.salary DESC
+            SQL;
+
+        self::assertSame($expectedSql, $query->toSql());
+    }
+
     public function test_select_with_right_join() : void
     {
         $query = SelectBuilder::create()
@@ -485,6 +1124,37 @@ public function test_select_with_right_join() : void
         self::assertNotNull($fromClause);
     }
 
+    public function test_select_with_row_expression_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT * FROM users WHERE (first_name, last_name) = ('John', 'Doe')",
+            select()
+                ->select(star())
+                ->from(table('users'))
+                ->where(eq(
+                    row_expr([col('first_name'), col('last_name')]),
+                    row_expr([literal('John'), literal('Doe')])
+                ))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_scalar_subquery_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT name, (SELECT count(*) FROM orders WHERE orders.user_id = users.id) AS order_count FROM users',
+            select()
+                ->select(
+                    col('name'),
+                    sub_select(
+                        select()->select(agg_count())->from(table('orders'))->where(eq(col('orders.user_id'), col('users.id')))
+                    )->as('order_count')
+                )
+                ->from(table('users'))
+                ->toSql()
+        );
+    }
+
     public function test_select_with_schema_qualified_table() : void
     {
         $query = SelectBuilder::create()
@@ -502,6 +1172,33 @@ public function test_select_with_schema_qualified_table() : void
         self::assertSame('public', $rangeVar->getSchemaname());
     }
 
+    public function test_select_with_similar_to_to_sql() : void
+    {
+        self::assertSame(
+            "SELECT * FROM users WHERE name SIMILAR TO '%John%'",
+            select()->select(star())->from(table('users'))->where(similar_to(col('name'), literal('%John%')))->toSql()
+        );
+    }
+
+    public function test_select_with_table_function_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT value FROM generate_series(1, 10) value',
+            select()->select(col('value'))->from(table_func(func('generate_series', [literal(1), literal(10)]))->as('value'))->toSql()
+        );
+    }
+
+    public function test_select_with_type_cast_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT id, price::int AS price_int FROM products',
+            select()
+                ->select(col('id'), cast(col('price'), column_type_integer())->as('price_int'))
+                ->from(table('products'))
+                ->toSql()
+        );
+    }
+
     public function test_select_with_union() : void
     {
         $query1 = SelectBuilder::create()
@@ -550,6 +1247,39 @@ public function test_select_with_where() : void
         self::assertNotNull($whereClause);
     }
 
+    public function test_select_with_where_comparison_operators_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM products WHERE price > 10 AND price < 100 AND quantity >= 1 AND weight <= 50',
+            select()
+                ->select(star())
+                ->from(table('products'))
+                ->where(and_(
+                    gt(col('price'), literal(10)),
+                    lt(col('price'), literal(100)),
+                    ge(col('quantity'), literal(1)),
+                    le(col('weight'), literal(50))
+                ))
+                ->toSql()
+        );
+    }
+
+    public function test_select_with_window_definition_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT department, salary, row_number() OVER (ORDER BY salary DESC) AS rank FROM employees WINDOW w AS (PARTITION BY department ORDER BY salary DESC)',
+            select()
+                ->select(
+                    col('department'),
+                    col('salary'),
+                    window_func('row_number', [], [], [order_by(col('salary'), SortDirection::DESC)])->as('rank')
+                )
+                ->from(table('employees'))
+                ->window(window_def('w', [col('department')], [order_by(col('salary'), SortDirection::DESC)]))
+                ->toSql()
+        );
+    }
+
     public function test_simple_select() : void
     {
         $query = SelectBuilder::create()
@@ -567,4 +1297,55 @@ public function test_simple_select() : void
         self::assertNotNull($fromClause);
         self::assertCount(1, $fromClause);
     }
+
+    public function test_simple_select_star_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM users',
+            select()->select(star())->from(table('users'))->toSql()
+        );
+    }
+
+    public function test_simple_select_with_where_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT * FROM users WHERE active = true',
+            select()->select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()
+        );
+    }
+
+    public function test_sql_value_function_current_date_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT current_date AS today',
+            select()->select(current_date()->as('today'))->toSql()
+        );
+    }
+
+    public function test_sql_value_function_current_time_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT current_time AS now_time',
+            select()->select(current_time()->as('now_time'))->toSql()
+        );
+    }
+
+    public function test_sql_value_function_current_timestamp_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT current_timestamp AS now',
+            select()->select(current_timestamp()->as('now'))->toSql()
+        );
+    }
+
+    public function test_sql_value_functions_with_other_columns_to_sql() : void
+    {
+        self::assertSame(
+            'SELECT id, name, current_timestamp AS created_at FROM users',
+            select()
+                ->select(col('id'), col('name'), current_timestamp()->as('created_at'))
+                ->from(table('users'))
+                ->toSql()
+        );
+    }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TableBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Table/TableBuilderTest.php
similarity index 61%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TableBuilderTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Table/TableBuilderTest.php
index 240db50fa1..5904ea83da 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TableBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Table/TableBuilderTest.php
@@ -2,23 +2,25 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Table;
 
 use function Flow\PostgreSql\DSL\{
     alter,
     check_constraint,
     col,
     column,
+    column_type_boolean,
+    column_type_integer,
+    column_type_serial,
+    column_type_text,
+    column_type_timestamp,
+    column_type_varchar,
     create,
     current_timestamp,
-    data_type_boolean,
-    data_type_integer,
-    data_type_serial,
-    data_type_text,
-    data_type_timestamp,
-    data_type_varchar,
     drop,
     foreign_key,
+    gt,
+    literal,
     primary_key,
     ref_action_cascade,
     ref_action_restrict,
@@ -29,16 +31,18 @@
     unique_constraint
 };
 
-final class TableBuilderTest extends PGQueryTestCase
+use PHPUnit\Framework\TestCase;
+
+final class TableBuilderTest extends TestCase
 {
     public function test_alter_table_add_column() : void
     {
         $builder = alter()->table('users')
-            ->addColumn(column('email', data_type_varchar(255))->notNull());
+            ->addColumn(column('email', column_type_varchar(255))->notNull());
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE users ADD COLUMN email varchar(255) NOT NULL'
+        self::assertSame(
+            'ALTER TABLE users ADD COLUMN email varchar(255) NOT NULL',
+            $builder->toSql()
         );
     }
 
@@ -47,20 +51,20 @@ public function test_alter_table_add_constraint() : void
         $builder = alter()->table('users')
             ->addConstraint(unique_constraint('email')->name('users_email_unique'));
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE users ADD CONSTRAINT users_email_unique UNIQUE (email)'
+        self::assertSame(
+            'ALTER TABLE users ADD CONSTRAINT users_email_unique UNIQUE (email)',
+            $builder->toSql()
         );
     }
 
     public function test_alter_table_alter_column_set_default() : void
     {
         $builder = alter()->table('users')
-            ->alterColumnSetDefault('status', "'active'");
+            ->alterColumnSetDefault('status', literal('active'));
 
-        $this->assertAlterTableQuery(
-            $builder,
-            "ALTER TABLE users ALTER COLUMN status SET DEFAULT 'active'"
+        self::assertSame(
+            "ALTER TABLE users ALTER COLUMN status SET DEFAULT 'active'",
+            $builder->toSql()
         );
     }
 
@@ -69,20 +73,20 @@ public function test_alter_table_alter_column_set_not_null() : void
         $builder = alter()->table('users')
             ->alterColumnSetNotNull('email');
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE users ALTER COLUMN email SET NOT NULL'
+        self::assertSame(
+            'ALTER TABLE users ALTER COLUMN email SET NOT NULL',
+            $builder->toSql()
         );
     }
 
     public function test_alter_table_alter_column_type() : void
     {
         $builder = alter()->table('users')
-            ->alterColumnType('name', data_type_text());
+            ->alterColumnType('name', column_type_text());
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE users ALTER COLUMN name TYPE pg_catalog.text'
+        self::assertSame(
+            'ALTER TABLE users ALTER COLUMN name TYPE pg_catalog.text',
+            $builder->toSql()
         );
     }
 
@@ -91,9 +95,9 @@ public function test_alter_table_drop_column() : void
         $builder = alter()->table('users')
             ->dropColumn('temp_column');
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE users DROP temp_column'
+        self::assertSame(
+            'ALTER TABLE users DROP temp_column',
+            $builder->toSql()
         );
     }
 
@@ -102,9 +106,9 @@ public function test_alter_table_drop_column_cascade() : void
         $builder = alter()->table('users')
             ->dropColumn('temp_column', cascade: true);
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE users DROP temp_column CASCADE'
+        self::assertSame(
+            'ALTER TABLE users DROP temp_column CASCADE',
+            $builder->toSql()
         );
     }
 
@@ -113,9 +117,9 @@ public function test_alter_table_drop_constraint() : void
         $builder = alter()->table('users')
             ->dropConstraint('users_email_unique');
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE users DROP CONSTRAINT users_email_unique'
+        self::assertSame(
+            'ALTER TABLE users DROP CONSTRAINT users_email_unique',
+            $builder->toSql()
         );
     }
 
@@ -123,24 +127,24 @@ public function test_alter_table_if_exists() : void
     {
         $builder = alter()->table('users')
             ->ifExists()
-            ->addColumn(column('email', data_type_varchar(255)));
+            ->addColumn(column('email', column_type_varchar(255)));
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE IF EXISTS users ADD COLUMN email varchar(255)'
+        self::assertSame(
+            'ALTER TABLE IF EXISTS users ADD COLUMN email varchar(255)',
+            $builder->toSql()
         );
     }
 
     public function test_alter_table_multiple_operations() : void
     {
         $builder = alter()->table('users')
-            ->addColumn(column('phone', data_type_varchar(20)))
+            ->addColumn(column('phone', column_type_varchar(20)))
             ->dropColumn('fax')
             ->alterColumnSetNotNull('email');
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE users ADD COLUMN phone varchar(20), DROP fax, ALTER COLUMN email SET NOT NULL'
+        self::assertSame(
+            'ALTER TABLE users ADD COLUMN phone varchar(20), DROP fax, ALTER COLUMN email SET NOT NULL',
+            $builder->toSql()
         );
     }
 
@@ -149,9 +153,9 @@ public function test_alter_table_rename_column() : void
         $builder = alter()->table('users')
             ->renameColumn('old_name', 'new_name');
 
-        $this->assertRenameQuery(
-            $builder,
-            'ALTER TABLE users RENAME COLUMN old_name TO new_name'
+        self::assertSame(
+            'ALTER TABLE users RENAME COLUMN old_name TO new_name',
+            $builder->toSql()
         );
     }
 
@@ -161,9 +165,9 @@ public function test_alter_table_rename_column_if_exists() : void
             ->ifExists()
             ->renameColumn('old_name', 'new_name');
 
-        $this->assertRenameQuery(
-            $builder,
-            'ALTER TABLE IF EXISTS users RENAME COLUMN old_name TO new_name'
+        self::assertSame(
+            'ALTER TABLE IF EXISTS users RENAME COLUMN old_name TO new_name',
+            $builder->toSql()
         );
     }
 
@@ -172,9 +176,9 @@ public function test_alter_table_rename_column_with_schema() : void
         $builder = alter()->table('users', 'public')
             ->renameColumn('old_name', 'new_name');
 
-        $this->assertRenameQuery(
-            $builder,
-            'ALTER TABLE public.users RENAME COLUMN old_name TO new_name'
+        self::assertSame(
+            'ALTER TABLE public.users RENAME COLUMN old_name TO new_name',
+            $builder->toSql()
         );
     }
 
@@ -183,9 +187,9 @@ public function test_alter_table_rename_constraint() : void
         $builder = alter()->table('users')
             ->renameConstraint('old_constraint', 'new_constraint');
 
-        $this->assertRenameQuery(
-            $builder,
-            'ALTER TABLE users RENAME CONSTRAINT old_constraint TO new_constraint'
+        self::assertSame(
+            'ALTER TABLE users RENAME CONSTRAINT old_constraint TO new_constraint',
+            $builder->toSql()
         );
     }
 
@@ -194,9 +198,9 @@ public function test_alter_table_rename_to() : void
         $builder = alter()->table('users')
             ->renameTo('users_archive');
 
-        $this->assertRenameQuery(
-            $builder,
-            'ALTER TABLE users RENAME TO users_archive'
+        self::assertSame(
+            'ALTER TABLE users RENAME TO users_archive',
+            $builder->toSql()
         );
     }
 
@@ -205,9 +209,9 @@ public function test_alter_table_set_schema() : void
         $builder = alter()->table('users')
             ->setSchema('archive');
 
-        $this->assertAlterObjectSchemaQuery(
-            $builder,
-            'ALTER TABLE users SET SCHEMA archive'
+        self::assertSame(
+            'ALTER TABLE users SET SCHEMA archive',
+            $builder->toSql()
         );
     }
 
@@ -217,20 +221,20 @@ public function test_alter_table_set_schema_if_exists() : void
             ->ifExists()
             ->setSchema('archive');
 
-        $this->assertAlterObjectSchemaQuery(
-            $builder,
-            'ALTER TABLE IF EXISTS users SET SCHEMA archive'
+        self::assertSame(
+            'ALTER TABLE IF EXISTS users SET SCHEMA archive',
+            $builder->toSql()
         );
     }
 
     public function test_alter_table_with_schema() : void
     {
         $builder = alter()->table('users', 'public')
-            ->addColumn(column('email', data_type_varchar(255)));
+            ->addColumn(column('email', column_type_varchar(255)));
 
-        $this->assertAlterTableQuery(
-            $builder,
-            'ALTER TABLE public.users ADD COLUMN email varchar(255)'
+        self::assertSame(
+            'ALTER TABLE public.users ADD COLUMN email varchar(255)',
+            $builder->toSql()
         );
     }
 
@@ -243,9 +247,9 @@ public function test_create_table_as_if_not_exists() : void
         $builder = create()->tableAs('users_backup', $selectBuilder)
             ->ifNotExists();
 
-        $this->assertCreateTableAsQuery(
-            $builder,
-            'CREATE TABLE IF NOT EXISTS users_backup AS SELECT id, name FROM users'
+        self::assertSame(
+            'CREATE TABLE IF NOT EXISTS users_backup AS SELECT id, name FROM users',
+            $builder->toSql()
         );
     }
 
@@ -258,9 +262,9 @@ public function test_create_table_as_with_column_names() : void
         $builder = create()->tableAs('users_backup', $selectBuilder)
             ->columnNames('user_id', 'user_name');
 
-        $this->assertCreateTableAsQuery(
-            $builder,
-            'CREATE TABLE users_backup(user_id, user_name) AS SELECT id, name FROM users'
+        self::assertSame(
+            'CREATE TABLE users_backup(user_id, user_name) AS SELECT id, name FROM users',
+            $builder->toSql()
         );
     }
 
@@ -273,9 +277,9 @@ public function test_create_table_as_with_no_data() : void
         $builder = create()->tableAs('users_backup', $selectBuilder)
             ->withNoData();
 
-        $this->assertCreateTableAsQuery(
-            $builder,
-            'CREATE TABLE users_backup AS SELECT id, name FROM users  WITH NO DATA'
+        self::assertSame(
+            'CREATE TABLE users_backup AS SELECT id, name FROM users  WITH NO DATA',
+            $builder->toSql()
         );
     }
 
@@ -283,146 +287,146 @@ public function test_create_table_if_not_exists() : void
     {
         $builder = create()->table('users')
             ->ifNotExists()
-            ->column(column('id', data_type_serial())->primaryKey())
-            ->column(column('name', data_type_varchar(100)));
+            ->column(column('id', column_type_serial())->primaryKey())
+            ->column(column('name', column_type_varchar(100)));
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE IF NOT EXISTS users (id serial PRIMARY KEY, name varchar(100))'
+        self::assertSame(
+            'CREATE TABLE IF NOT EXISTS users (id serial PRIMARY KEY, name varchar(100))',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_simple() : void
     {
         $builder = create()->table('users')
-            ->column(column('id', data_type_serial())->primaryKey())
-            ->column(column('name', data_type_varchar(100))->notNull());
+            ->column(column('id', column_type_serial())->primaryKey())
+            ->column(column('name', column_type_varchar(100))->notNull());
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE users (id serial PRIMARY KEY, name varchar(100) NOT NULL)'
+        self::assertSame(
+            'CREATE TABLE users (id serial PRIMARY KEY, name varchar(100) NOT NULL)',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_with_check_constraint() : void
     {
         $builder = create()->table('products')
-            ->column(column('id', data_type_serial())->primaryKey())
-            ->column(column('price', data_type_integer()))
-            ->constraint(check_constraint('price > 0')->name('positive_price'));
+            ->column(column('id', column_type_serial())->primaryKey())
+            ->column(column('price', column_type_integer()))
+            ->constraint(check_constraint(gt(col('price'), literal(0)))->name('positive_price'));
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE products (id serial PRIMARY KEY, price int, CONSTRAINT positive_price CHECK (price > 0))'
+        self::assertSame(
+            'CREATE TABLE products (id serial PRIMARY KEY, price int, CONSTRAINT positive_price CHECK (price > 0))',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_with_column_default() : void
     {
         $builder = create()->table('users')
-            ->column(column('id', data_type_serial())->primaryKey())
-            ->column(column('active', data_type_boolean())->default(true));
+            ->column(column('id', column_type_serial())->primaryKey())
+            ->column(column('active', column_type_boolean())->default(true));
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE users (id serial PRIMARY KEY, active boolean DEFAULT true)'
+        self::assertSame(
+            'CREATE TABLE users (id serial PRIMARY KEY, active boolean DEFAULT true)',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_with_column_default_current_timestamp() : void
     {
         $builder = create()->table('audit_log')
-            ->column(column('id', data_type_serial())->primaryKey())
-            ->column(column('message', data_type_text())->notNull())
-            ->column(column('created_at', data_type_timestamp())->notNull()->default(current_timestamp()));
+            ->column(column('id', column_type_serial())->primaryKey())
+            ->column(column('message', column_type_text())->notNull())
+            ->column(column('created_at', column_type_timestamp())->notNull()->default(current_timestamp()));
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE audit_log (id serial PRIMARY KEY, message pg_catalog.text NOT NULL, created_at timestamp NOT NULL DEFAULT current_timestamp)'
+        self::assertSame(
+            'CREATE TABLE audit_log (id serial PRIMARY KEY, message pg_catalog.text NOT NULL, created_at timestamp NOT NULL DEFAULT current_timestamp)',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_with_composite_primary_key() : void
     {
         $builder = create()->table('order_items')
-            ->column(column('order_id', data_type_integer())->notNull())
-            ->column(column('product_id', data_type_integer())->notNull())
-            ->column(column('quantity', data_type_integer()))
+            ->column(column('order_id', column_type_integer())->notNull())
+            ->column(column('product_id', column_type_integer())->notNull())
+            ->column(column('quantity', column_type_integer()))
             ->constraint(primary_key('order_id', 'product_id'));
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE order_items (order_id int NOT NULL, product_id int NOT NULL, quantity int, PRIMARY KEY (order_id, product_id))'
+        self::assertSame(
+            'CREATE TABLE order_items (order_id int NOT NULL, product_id int NOT NULL, quantity int, PRIMARY KEY (order_id, product_id))',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_with_foreign_key() : void
     {
         $builder = create()->table('orders')
-            ->column(column('id', data_type_serial())->primaryKey())
-            ->column(column('user_id', data_type_integer())->notNull())
+            ->column(column('id', column_type_serial())->primaryKey())
+            ->column(column('user_id', column_type_integer())->notNull())
             ->constraint(
                 foreign_key(['user_id'], 'users', ['id'])
                     ->onDelete(ref_action_cascade())
                     ->onUpdate(ref_action_restrict())
             );
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE orders (id serial PRIMARY KEY, user_id int NOT NULL, FOREIGN KEY (user_id) REFERENCES users (id) ON UPDATE RESTRICT ON DELETE CASCADE)'
+        self::assertSame(
+            'CREATE TABLE orders (id serial PRIMARY KEY, user_id int NOT NULL, FOREIGN KEY (user_id) REFERENCES users (id) ON UPDATE RESTRICT ON DELETE CASCADE)',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_with_foreign_key_set_null() : void
     {
         $builder = create()->table('comments')
-            ->column(column('id', data_type_serial())->primaryKey())
-            ->column(column('user_id', data_type_integer()))
+            ->column(column('id', column_type_serial())->primaryKey())
+            ->column(column('user_id', column_type_integer()))
             ->constraint(
                 foreign_key(['user_id'], 'users', ['id'])
                     ->onDelete(ref_action_set_null())
             );
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE comments (id serial PRIMARY KEY, user_id int, FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE SET NULL)'
+        self::assertSame(
+            'CREATE TABLE comments (id serial PRIMARY KEY, user_id int, FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE SET NULL)',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_with_schema() : void
     {
         $builder = create()->table('users', 'public')
-            ->column(column('id', data_type_serial())->primaryKey());
+            ->column(column('id', column_type_serial())->primaryKey());
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE public.users (id serial PRIMARY KEY)'
+        self::assertSame(
+            'CREATE TABLE public.users (id serial PRIMARY KEY)',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_with_timestamp() : void
     {
         $builder = create()->table('audit_log')
-            ->column(column('id', data_type_serial())->primaryKey())
-            ->column(column('created_at', data_type_timestamp())->notNull())
-            ->column(column('updated_at', data_type_timestamp()));
+            ->column(column('id', column_type_serial())->primaryKey())
+            ->column(column('created_at', column_type_timestamp())->notNull())
+            ->column(column('updated_at', column_type_timestamp()));
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE audit_log (id serial PRIMARY KEY, created_at timestamp NOT NULL, updated_at timestamp)'
+        self::assertSame(
+            'CREATE TABLE audit_log (id serial PRIMARY KEY, created_at timestamp NOT NULL, updated_at timestamp)',
+            $builder->toSql()
         );
     }
 
     public function test_create_table_with_unique_constraint() : void
     {
         $builder = create()->table('users')
-            ->column(column('id', data_type_serial())->primaryKey())
-            ->column(column('email', data_type_varchar(255))->notNull())
+            ->column(column('id', column_type_serial())->primaryKey())
+            ->column(column('email', column_type_varchar(255))->notNull())
             ->constraint(unique_constraint('email'));
 
-        $this->assertCreateTableQuery(
-            $builder,
-            'CREATE TABLE users (id serial PRIMARY KEY, email varchar(255) NOT NULL, UNIQUE (email))'
+        self::assertSame(
+            'CREATE TABLE users (id serial PRIMARY KEY, email varchar(255) NOT NULL, UNIQUE (email))',
+            $builder->toSql()
         );
     }
 
@@ -431,9 +435,9 @@ public function test_drop_table_cascade() : void
         $builder = drop()->table('users')
             ->cascade();
 
-        $this->assertDropTableQuery(
-            $builder,
-            'DROP TABLE users CASCADE'
+        self::assertSame(
+            'DROP TABLE users CASCADE',
+            $builder->toSql()
         );
     }
 
@@ -442,9 +446,9 @@ public function test_drop_table_if_exists() : void
         $builder = drop()->table('users')
             ->ifExists();
 
-        $this->assertDropTableQuery(
-            $builder,
-            'DROP TABLE IF EXISTS users'
+        self::assertSame(
+            'DROP TABLE IF EXISTS users',
+            $builder->toSql()
         );
     }
 
@@ -454,9 +458,9 @@ public function test_drop_table_if_exists_cascade() : void
             ->ifExists()
             ->cascade();
 
-        $this->assertDropTableQuery(
-            $builder,
-            'DROP TABLE IF EXISTS users CASCADE'
+        self::assertSame(
+            'DROP TABLE IF EXISTS users CASCADE',
+            $builder->toSql()
         );
     }
 
@@ -464,9 +468,9 @@ public function test_drop_table_multiple_tables() : void
     {
         $builder = drop()->table('users', 'orders', 'products');
 
-        $this->assertDropTableQuery(
-            $builder,
-            'DROP TABLE users, orders, products'
+        self::assertSame(
+            'DROP TABLE users, orders, products',
+            $builder->toSql()
         );
     }
 
@@ -475,9 +479,9 @@ public function test_drop_table_restrict() : void
         $builder = drop()->table('users')
             ->restrict();
 
-        $this->assertDropTableQuery(
-            $builder,
-            'DROP TABLE users'
+        self::assertSame(
+            'DROP TABLE users',
+            $builder->toSql()
         );
     }
 
@@ -485,9 +489,9 @@ public function test_drop_table_simple() : void
     {
         $builder = drop()->table('users');
 
-        $this->assertDropTableQuery(
-            $builder,
-            'DROP TABLE users'
+        self::assertSame(
+            'DROP TABLE users',
+            $builder->toSql()
         );
     }
 
@@ -495,9 +499,9 @@ public function test_drop_table_with_schema() : void
     {
         $builder = drop()->table('public.users');
 
-        $this->assertDropTableQuery(
-            $builder,
-            'DROP TABLE public.users'
+        self::assertSame(
+            'DROP TABLE public.users',
+            $builder->toSql()
         );
     }
 
@@ -509,9 +513,9 @@ public function test_simple_create_table_as() : void
 
         $builder = create()->tableAs('users_backup', $selectBuilder);
 
-        $this->assertCreateTableAsQuery(
-            $builder,
-            'CREATE TABLE users_backup AS SELECT id, name FROM users'
+        self::assertSame(
+            'CREATE TABLE users_backup AS SELECT id, name FROM users',
+            $builder->toSql()
         );
     }
 
@@ -520,9 +524,9 @@ public function test_truncate_cascade() : void
         $builder = truncate_table('users')
             ->cascade();
 
-        $this->assertTruncateQuery(
-            $builder,
-            'TRUNCATE users CASCADE'
+        self::assertSame(
+            'TRUNCATE users CASCADE',
+            $builder->toSql()
         );
     }
 
@@ -530,9 +534,9 @@ public function test_truncate_multiple_tables() : void
     {
         $builder = truncate_table('users', 'orders', 'products');
 
-        $this->assertTruncateQuery(
-            $builder,
-            'TRUNCATE users, orders, products'
+        self::assertSame(
+            'TRUNCATE users, orders, products',
+            $builder->toSql()
         );
     }
 
@@ -541,9 +545,9 @@ public function test_truncate_restart_identity() : void
         $builder = truncate_table('users')
             ->restartIdentity();
 
-        $this->assertTruncateQuery(
-            $builder,
-            'TRUNCATE users RESTART IDENTITY'
+        self::assertSame(
+            'TRUNCATE users RESTART IDENTITY',
+            $builder->toSql()
         );
     }
 
@@ -553,9 +557,9 @@ public function test_truncate_restart_identity_cascade() : void
             ->restartIdentity()
             ->cascade();
 
-        $this->assertTruncateQuery(
-            $builder,
-            'TRUNCATE users RESTART IDENTITY CASCADE'
+        self::assertSame(
+            'TRUNCATE users RESTART IDENTITY CASCADE',
+            $builder->toSql()
         );
     }
 
@@ -564,9 +568,9 @@ public function test_truncate_restrict() : void
         $builder = truncate_table('users')
             ->restrict();
 
-        $this->assertTruncateQuery(
-            $builder,
-            'TRUNCATE users'
+        self::assertSame(
+            'TRUNCATE users',
+            $builder->toSql()
         );
     }
 
@@ -574,9 +578,9 @@ public function test_truncate_simple() : void
     {
         $builder = truncate_table('users');
 
-        $this->assertTruncateQuery(
-            $builder,
-            'TRUNCATE users'
+        self::assertSame(
+            'TRUNCATE users',
+            $builder->toSql()
         );
     }
 
@@ -584,9 +588,9 @@ public function test_truncate_with_schema() : void
     {
         $builder = truncate_table('public.users');
 
-        $this->assertTruncateQuery(
-            $builder,
-            'TRUNCATE public.users'
+        self::assertSame(
+            'TRUNCATE public.users',
+            $builder->toSql()
         );
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TransactionBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Transaction/TransactionBuilderTest.php
similarity index 61%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TransactionBuilderTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Transaction/TransactionBuilderTest.php
index 0abecc18ba..0a9802f97a 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/TransactionBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Transaction/TransactionBuilderTest.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Transaction;
 
 use function Flow\PostgreSql\DSL\{
     begin,
@@ -19,16 +19,17 @@
 };
 
 use Flow\PostgreSql\QueryBuilder\Transaction\IsolationLevel;
+use PHPUnit\Framework\TestCase;
 
-final class TransactionBuilderTest extends PGQueryTestCase
+final class TransactionBuilderTest extends TestCase
 {
     public function test_begin_basic() : void
     {
         $query = begin();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN'
+        self::assertSame(
+            'BEGIN',
+            $query->toSql()
         );
     }
 
@@ -39,9 +40,9 @@ public function test_begin_with_all_options() : void
             ->readOnly()
             ->deferrable();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN ISOLATION LEVEL SERIALIZABLE, READ ONLY, DEFERRABLE'
+        self::assertSame(
+            'BEGIN ISOLATION LEVEL SERIALIZABLE, READ ONLY, DEFERRABLE',
+            $query->toSql()
         );
     }
 
@@ -50,9 +51,9 @@ public function test_begin_with_deferrable() : void
         $query = begin()
             ->deferrable();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN DEFERRABLE'
+        self::assertSame(
+            'BEGIN DEFERRABLE',
+            $query->toSql()
         );
     }
 
@@ -61,9 +62,9 @@ public function test_begin_with_isolation_level_read_committed() : void
         $query = begin()
             ->isolationLevel(IsolationLevel::READ_COMMITTED);
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN ISOLATION LEVEL READ COMMITTED'
+        self::assertSame(
+            'BEGIN ISOLATION LEVEL READ COMMITTED',
+            $query->toSql()
         );
     }
 
@@ -72,9 +73,9 @@ public function test_begin_with_isolation_level_read_uncommitted() : void
         $query = begin()
             ->isolationLevel(IsolationLevel::READ_UNCOMMITTED);
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN ISOLATION LEVEL READ UNCOMMITTED'
+        self::assertSame(
+            'BEGIN ISOLATION LEVEL READ UNCOMMITTED',
+            $query->toSql()
         );
     }
 
@@ -83,9 +84,9 @@ public function test_begin_with_isolation_level_repeatable_read() : void
         $query = begin()
             ->isolationLevel(IsolationLevel::REPEATABLE_READ);
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN ISOLATION LEVEL REPEATABLE READ'
+        self::assertSame(
+            'BEGIN ISOLATION LEVEL REPEATABLE READ',
+            $query->toSql()
         );
     }
 
@@ -94,9 +95,9 @@ public function test_begin_with_isolation_level_serializable() : void
         $query = begin()
             ->isolationLevel(IsolationLevel::SERIALIZABLE);
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN ISOLATION LEVEL SERIALIZABLE'
+        self::assertSame(
+            'BEGIN ISOLATION LEVEL SERIALIZABLE',
+            $query->toSql()
         );
     }
 
@@ -105,9 +106,9 @@ public function test_begin_with_not_deferrable() : void
         $query = begin()
             ->notDeferrable();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN NOT DEFERRABLE'
+        self::assertSame(
+            'BEGIN NOT DEFERRABLE',
+            $query->toSql()
         );
     }
 
@@ -116,9 +117,9 @@ public function test_begin_with_read_only() : void
         $query = begin()
             ->readOnly();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN READ ONLY'
+        self::assertSame(
+            'BEGIN READ ONLY',
+            $query->toSql()
         );
     }
 
@@ -127,9 +128,9 @@ public function test_begin_with_read_write() : void
         $query = begin()
             ->readWrite();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN READ WRITE'
+        self::assertSame(
+            'BEGIN READ WRITE',
+            $query->toSql()
         );
     }
 
@@ -138,9 +139,9 @@ public function test_commit_and_chain() : void
         $query = commit()
             ->andChain();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'COMMIT AND CHAIN'
+        self::assertSame(
+            'COMMIT AND CHAIN',
+            $query->toSql()
         );
     }
 
@@ -148,9 +149,9 @@ public function test_commit_basic() : void
     {
         $query = commit();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'COMMIT'
+        self::assertSame(
+            'COMMIT',
+            $query->toSql()
         );
     }
 
@@ -158,9 +159,9 @@ public function test_commit_prepared() : void
     {
         $query = commit_prepared('my_transaction');
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            "COMMIT PREPARED 'my_transaction'"
+        self::assertSame(
+            "COMMIT PREPARED 'my_transaction'",
+            $query->toSql()
         );
     }
 
@@ -168,9 +169,9 @@ public function test_prepare_transaction() : void
     {
         $query = prepare_transaction('my_transaction');
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            "PREPARE TRANSACTION 'my_transaction'"
+        self::assertSame(
+            "PREPARE TRANSACTION 'my_transaction'",
+            $query->toSql()
         );
     }
 
@@ -178,9 +179,9 @@ public function test_release_savepoint() : void
     {
         $query = release_savepoint('my_savepoint');
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'RELEASE my_savepoint'
+        self::assertSame(
+            'RELEASE my_savepoint',
+            $query->toSql()
         );
     }
 
@@ -189,9 +190,9 @@ public function test_rollback_and_chain() : void
         $query = rollback()
             ->andChain();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'ROLLBACK AND CHAIN'
+        self::assertSame(
+            'ROLLBACK AND CHAIN',
+            $query->toSql()
         );
     }
 
@@ -199,9 +200,9 @@ public function test_rollback_basic() : void
     {
         $query = rollback();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'ROLLBACK'
+        self::assertSame(
+            'ROLLBACK',
+            $query->toSql()
         );
     }
 
@@ -209,9 +210,9 @@ public function test_rollback_prepared() : void
     {
         $query = rollback_prepared('my_transaction');
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            "ROLLBACK PREPARED 'my_transaction'"
+        self::assertSame(
+            "ROLLBACK PREPARED 'my_transaction'",
+            $query->toSql()
         );
     }
 
@@ -220,9 +221,9 @@ public function test_rollback_to_savepoint() : void
         $query = rollback()
             ->toSavepoint('my_savepoint');
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'ROLLBACK TO SAVEPOINT my_savepoint'
+        self::assertSame(
+            'ROLLBACK TO SAVEPOINT my_savepoint',
+            $query->toSql()
         );
     }
 
@@ -230,9 +231,9 @@ public function test_savepoint() : void
     {
         $query = savepoint('my_savepoint');
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'SAVEPOINT my_savepoint'
+        self::assertSame(
+            'SAVEPOINT my_savepoint',
+            $query->toSql()
         );
     }
 
@@ -241,9 +242,9 @@ public function test_set_session_transaction() : void
         $query = set_session_transaction()
             ->isolationLevel(IsolationLevel::SERIALIZABLE);
 
-        $this->assertSetTransactionQueryEquals(
-            $query,
-            'SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL SERIALIZABLE'
+        self::assertSame(
+            'SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL SERIALIZABLE',
+            $query->toSql()
         );
     }
 
@@ -252,9 +253,9 @@ public function test_set_transaction_deferrable() : void
         $query = set_transaction()
             ->deferrable();
 
-        $this->assertSetTransactionQueryEquals(
-            $query,
-            'SET TRANSACTION DEFERRABLE'
+        self::assertSame(
+            'SET TRANSACTION DEFERRABLE',
+            $query->toSql()
         );
     }
 
@@ -263,9 +264,9 @@ public function test_set_transaction_isolation_level() : void
         $query = set_transaction()
             ->isolationLevel(IsolationLevel::SERIALIZABLE);
 
-        $this->assertSetTransactionQueryEquals(
-            $query,
-            'SET TRANSACTION ISOLATION LEVEL SERIALIZABLE'
+        self::assertSame(
+            'SET TRANSACTION ISOLATION LEVEL SERIALIZABLE',
+            $query->toSql()
         );
     }
 
@@ -274,9 +275,9 @@ public function test_set_transaction_read_only() : void
         $query = set_transaction()
             ->readOnly();
 
-        $this->assertSetTransactionQueryEquals(
-            $query,
-            'SET TRANSACTION READ ONLY'
+        self::assertSame(
+            'SET TRANSACTION READ ONLY',
+            $query->toSql()
         );
     }
 
@@ -285,9 +286,9 @@ public function test_set_transaction_read_write() : void
         $query = set_transaction()
             ->readWrite();
 
-        $this->assertSetTransactionQueryEquals(
-            $query,
-            'SET TRANSACTION READ WRITE'
+        self::assertSame(
+            'SET TRANSACTION READ WRITE',
+            $query->toSql()
         );
     }
 
@@ -298,9 +299,9 @@ public function test_set_transaction_with_multiple_options() : void
             ->readOnly()
             ->deferrable();
 
-        $this->assertSetTransactionQueryEquals(
-            $query,
-            'SET TRANSACTION ISOLATION LEVEL SERIALIZABLE, READ ONLY, DEFERRABLE'
+        self::assertSame(
+            'SET TRANSACTION ISOLATION LEVEL SERIALIZABLE, READ ONLY, DEFERRABLE',
+            $query->toSql()
         );
     }
 
@@ -308,9 +309,9 @@ public function test_start_transaction_basic() : void
     {
         $query = begin();
 
-        $this->assertTransactionQueryEquals(
-            $query,
-            'BEGIN'
+        self::assertSame(
+            'BEGIN',
+            $query->toSql()
         );
     }
 
@@ -318,9 +319,9 @@ public function test_transaction_snapshot() : void
     {
         $query = transaction_snapshot('00000003-0000001A-1');
 
-        $this->assertSetTransactionQueryEquals(
-            $query,
-            "SET TRANSACTION SNAPSHOT '00000003-0000001A-1'"
+        self::assertSame(
+            "SET TRANSACTION SNAPSHOT '00000003-0000001A-1'",
+            $query->toSql()
         );
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Update/UpdateBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Update/UpdateBuilderTest.php
index 2dfb9d6738..74f2ff1e63 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Update/UpdateBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Update/UpdateBuilderTest.php
@@ -4,6 +4,7 @@
 
 namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Update;
 
+use function Flow\PostgreSql\DSL\{col, eq, literal, param, select, sub_select, table, update};
 use Flow\PostgreSql\{ParsedQuery, Parser};
 use Flow\PostgreSql\Protobuf\AST\{Node, RawStmt, UpdateStmt};
 use Flow\PostgreSql\QueryBuilder\Clause\{CTE, WithClause};
@@ -428,6 +429,16 @@ public function test_update_with_binary_expression_deparsed_output() : void
         self::assertSame('UPDATE counters SET count = count + 1', $deparsed);
     }
 
+    public function test_update_with_column_expression() : void
+    {
+        $query = update()
+            ->update('products')
+            ->set('price', col('price'))
+            ->where(eq(col('id'), literal(1)));
+
+        self::assertSame('UPDATE products SET price = price WHERE id = 1', $query->toSql());
+    }
+
     public function test_update_with_column_reference() : void
     {
         $query = UpdateBuilder::create()
@@ -528,6 +539,27 @@ public function test_update_with_multiple_from_tables() : void
         self::assertCount(2, $fromClause);
     }
 
+    public function test_update_with_multiple_set() : void
+    {
+        $query = update()
+            ->update('users')
+            ->set('name', literal('John'))
+            ->set('email', literal('john@example.com'))
+            ->where(eq(col('id'), literal(1)));
+
+        self::assertSame("UPDATE users SET name = 'John', email = 'john@example.com' WHERE id = 1", $query->toSql());
+    }
+
+    public function test_update_with_parameters() : void
+    {
+        $query = update()
+            ->update('users')
+            ->set('name', param(1))
+            ->where(eq(col('id'), param(2)));
+
+        self::assertSame('UPDATE users SET name = $1 WHERE id = $2', $query->toSql());
+    }
+
     public function test_update_with_returning() : void
     {
         $query = UpdateBuilder::create()
@@ -639,6 +671,34 @@ public function test_update_with_schema_round_trip() : void
         self::assertSame($originalRelation->getSchemaname(), $restoredRelation->getSchemaname());
     }
 
+    public function test_update_with_set_all() : void
+    {
+        $query = update()
+            ->update('users')
+            ->setAll([
+                'name' => literal('John'),
+                'email' => literal('john@example.com'),
+            ])
+            ->where(eq(col('id'), literal(1)));
+
+        self::assertSame("UPDATE users SET name = 'John', email = 'john@example.com' WHERE id = 1", $query->toSql());
+    }
+
+    public function test_update_with_subquery_in_set() : void
+    {
+        $subquery = select()
+            ->select(col('avg_price'))
+            ->from(table('price_stats'))
+            ->where(eq(col('category'), col('products.category')));
+
+        $query = update()
+            ->update('products')
+            ->set('price', sub_select($subquery))
+            ->where(eq(col('id'), literal(1)));
+
+        self::assertSame('UPDATE products SET price = (SELECT avg_price FROM price_stats WHERE category = products.category) WHERE id = 1', $query->toSql());
+    }
+
     public function test_update_with_where() : void
     {
         $query = UpdateBuilder::create()
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/UtilityBuilderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Utility/UtilityBuilderTest.php
similarity index 60%
rename from src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/UtilityBuilderTest.php
rename to src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Utility/UtilityBuilderTest.php
index cbb5c27859..11ec05049c 100644
--- a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Integration/QueryBuilder/UtilityBuilderTest.php
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/QueryBuilder/Utility/UtilityBuilderTest.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Flow\PostgreSql\Tests\Integration\QueryBuilder;
+namespace Flow\PostgreSql\Tests\Unit\QueryBuilder\Utility;
 
 use function Flow\PostgreSql\DSL\{
     analyze,
@@ -17,16 +17,17 @@
     vacuum
 };
 use Flow\PostgreSql\QueryBuilder\Utility\{CommentTarget, DiscardType, ExplainFormat, IndexCleanup, LockMode};
+use PHPUnit\Framework\TestCase;
 
-final class UtilityBuilderTest extends PGQueryTestCase
+final class UtilityBuilderTest extends TestCase
 {
     public function test_analyze_all_tables() : void
     {
         $builder = analyze();
 
-        $this->assertAnalyzeQuery(
-            $builder,
-            'ANALYZE'
+        self::assertSame(
+            'ANALYZE',
+            $builder->toSql()
         );
     }
 
@@ -34,9 +35,9 @@ public function test_analyze_multiple_tables() : void
     {
         $builder = analyze()->tables('users', 'orders', 'products');
 
-        $this->assertAnalyzeQuery(
-            $builder,
-            'ANALYZE users, orders, products'
+        self::assertSame(
+            'ANALYZE users, orders, products',
+            $builder->toSql()
         );
     }
 
@@ -44,9 +45,9 @@ public function test_analyze_single_table() : void
     {
         $builder = analyze()->table('users');
 
-        $this->assertAnalyzeQuery(
-            $builder,
-            'ANALYZE users'
+        self::assertSame(
+            'ANALYZE users',
+            $builder->toSql()
         );
     }
 
@@ -54,9 +55,9 @@ public function test_analyze_skip_locked() : void
     {
         $builder = analyze()->skipLocked()->table('users');
 
-        $this->assertAnalyzeQuery(
-            $builder,
-            'ANALYZE (SKIP_LOCKED) users'
+        self::assertSame(
+            'ANALYZE (SKIP_LOCKED) users',
+            $builder->toSql()
         );
     }
 
@@ -64,9 +65,9 @@ public function test_analyze_table_with_columns() : void
     {
         $builder = analyze()->table('users', 'email', 'name');
 
-        $this->assertAnalyzeQuery(
-            $builder,
-            'ANALYZE users(email, name)'
+        self::assertSame(
+            'ANALYZE users(email, name)',
+            $builder->toSql()
         );
     }
 
@@ -74,9 +75,9 @@ public function test_analyze_verbose() : void
     {
         $builder = analyze()->verbose()->table('users');
 
-        $this->assertAnalyzeQuery(
-            $builder,
-            'ANALYZE (VERBOSE) users'
+        self::assertSame(
+            'ANALYZE (VERBOSE) users',
+            $builder->toSql()
         );
     }
 
@@ -84,9 +85,9 @@ public function test_cluster_all_tables() : void
     {
         $builder = cluster();
 
-        $this->assertClusterQuery(
-            $builder,
-            'CLUSTER'
+        self::assertSame(
+            'CLUSTER',
+            $builder->toSql()
         );
     }
 
@@ -94,9 +95,9 @@ public function test_cluster_single_table() : void
     {
         $builder = cluster()->table('users');
 
-        $this->assertClusterQuery(
-            $builder,
-            'CLUSTER users'
+        self::assertSame(
+            'CLUSTER users',
+            $builder->toSql()
         );
     }
 
@@ -104,9 +105,9 @@ public function test_cluster_table_using_index() : void
     {
         $builder = cluster()->table('users')->using('idx_users_pkey');
 
-        $this->assertClusterQuery(
-            $builder,
-            'CLUSTER users USING idx_users_pkey'
+        self::assertSame(
+            'CLUSTER users USING idx_users_pkey',
+            $builder->toSql()
         );
     }
 
@@ -114,9 +115,9 @@ public function test_cluster_table_with_schema() : void
     {
         $builder = cluster()->table('public.users');
 
-        $this->assertClusterQuery(
-            $builder,
-            'CLUSTER public.users'
+        self::assertSame(
+            'CLUSTER public.users',
+            $builder->toSql()
         );
     }
 
@@ -124,9 +125,9 @@ public function test_cluster_verbose() : void
     {
         $builder = cluster()->verbose()->table('users');
 
-        $this->assertClusterQuery(
-            $builder,
-            'CLUSTER (VERBOSE) users'
+        self::assertSame(
+            'CLUSTER (VERBOSE) users',
+            $builder->toSql()
         );
     }
 
@@ -134,9 +135,9 @@ public function test_comment_on_column() : void
     {
         $builder = comment(CommentTarget::COLUMN, 'users.email')->is('User email address');
 
-        $this->assertCommentQuery(
-            $builder,
-            "COMMENT ON COLUMN users.email IS 'User email address'"
+        self::assertSame(
+            "COMMENT ON COLUMN users.email IS 'User email address'",
+            $builder->toSql()
         );
     }
 
@@ -144,9 +145,9 @@ public function test_comment_on_index() : void
     {
         $builder = comment(CommentTarget::INDEX, 'idx_users_email')->is('Email lookup index');
 
-        $this->assertCommentQuery(
-            $builder,
-            "COMMENT ON INDEX idx_users_email IS 'Email lookup index'"
+        self::assertSame(
+            "COMMENT ON INDEX idx_users_email IS 'Email lookup index'",
+            $builder->toSql()
         );
     }
 
@@ -154,9 +155,9 @@ public function test_comment_on_schema() : void
     {
         $builder = comment(CommentTarget::SCHEMA, 'public')->is('Default schema');
 
-        $this->assertCommentQuery(
-            $builder,
-            "COMMENT ON SCHEMA public IS 'Default schema'"
+        self::assertSame(
+            "COMMENT ON SCHEMA public IS 'Default schema'",
+            $builder->toSql()
         );
     }
 
@@ -164,9 +165,9 @@ public function test_comment_on_table() : void
     {
         $builder = comment(CommentTarget::TABLE, 'users')->is('User accounts table');
 
-        $this->assertCommentQuery(
-            $builder,
-            "COMMENT ON TABLE users IS 'User accounts table'"
+        self::assertSame(
+            "COMMENT ON TABLE users IS 'User accounts table'",
+            $builder->toSql()
         );
     }
 
@@ -174,9 +175,9 @@ public function test_comment_remove() : void
     {
         $builder = comment(CommentTarget::TABLE, 'users')->isNull();
 
-        $this->assertCommentQuery(
-            $builder,
-            'COMMENT ON TABLE users IS NULL'
+        self::assertSame(
+            'COMMENT ON TABLE users IS NULL',
+            $builder->toSql()
         );
     }
 
@@ -184,9 +185,9 @@ public function test_discard_all() : void
     {
         $builder = discard(DiscardType::ALL);
 
-        $this->assertDiscardQuery(
-            $builder,
-            'DISCARD ALL'
+        self::assertSame(
+            'DISCARD ALL',
+            $builder->toSql()
         );
     }
 
@@ -194,9 +195,9 @@ public function test_discard_plans() : void
     {
         $builder = discard(DiscardType::PLANS);
 
-        $this->assertDiscardQuery(
-            $builder,
-            'DISCARD PLANS'
+        self::assertSame(
+            'DISCARD PLANS',
+            $builder->toSql()
         );
     }
 
@@ -204,9 +205,9 @@ public function test_discard_sequences() : void
     {
         $builder = discard(DiscardType::SEQUENCES);
 
-        $this->assertDiscardQuery(
-            $builder,
-            'DISCARD SEQUENCES'
+        self::assertSame(
+            'DISCARD SEQUENCES',
+            $builder->toSql()
         );
     }
 
@@ -214,9 +215,9 @@ public function test_discard_temp() : void
     {
         $builder = discard(DiscardType::TEMP);
 
-        $this->assertDiscardQuery(
-            $builder,
-            'DISCARD TEMP'
+        self::assertSame(
+            'DISCARD TEMP',
+            $builder->toSql()
         );
     }
 
@@ -224,9 +225,9 @@ public function test_explain_analyze() : void
     {
         $builder = explain(select(star())->from(table('users')))->analyze();
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (ANALYZE) SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (ANALYZE) SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -234,9 +235,9 @@ public function test_explain_format_json() : void
     {
         $builder = explain(select(star())->from(table('users')))->format(ExplainFormat::JSON);
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (FORMAT "json") SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (FORMAT "json") SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -244,9 +245,9 @@ public function test_explain_format_xml() : void
     {
         $builder = explain(select(star())->from(table('users')))->format(ExplainFormat::XML);
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (FORMAT xml) SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (FORMAT xml) SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -254,9 +255,9 @@ public function test_explain_format_yaml() : void
     {
         $builder = explain(select(star())->from(table('users')))->format(ExplainFormat::YAML);
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (FORMAT yaml) SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (FORMAT yaml) SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -269,9 +270,9 @@ public function test_explain_full_options() : void
             ->timing(true)
             ->format(ExplainFormat::JSON);
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (ANALYZE, VERBOSE, BUFFERS 1, TIMING 1, FORMAT "json") SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (ANALYZE, VERBOSE, BUFFERS 1, TIMING 1, FORMAT "json") SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -279,9 +280,9 @@ public function test_explain_select() : void
     {
         $builder = explain(select(star())->from(table('users')));
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -289,9 +290,9 @@ public function test_explain_verbose() : void
     {
         $builder = explain(select(star())->from(table('users')))->verbose();
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (VERBOSE) SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (VERBOSE) SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -299,9 +300,9 @@ public function test_explain_with_buffers() : void
     {
         $builder = explain(select(star())->from(table('users')))->analyze()->buffers(true);
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (ANALYZE, BUFFERS 1) SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (ANALYZE, BUFFERS 1) SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -309,9 +310,9 @@ public function test_explain_with_costs() : void
     {
         $builder = explain(select(star())->from(table('users')))->costs(true);
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (COSTS 1) SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (COSTS 1) SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -319,9 +320,9 @@ public function test_explain_with_timing() : void
     {
         $builder = explain(select(star())->from(table('users')))->analyze()->timing(true);
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (ANALYZE, TIMING 1) SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (ANALYZE, TIMING 1) SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -329,9 +330,9 @@ public function test_explain_without_costs() : void
     {
         $builder = explain(select(star())->from(table('users')))->costs(false);
 
-        $this->assertExplainQuery(
-            $builder,
-            'EXPLAIN (COSTS 0) SELECT * FROM users'
+        self::assertSame(
+            'EXPLAIN (COSTS 0) SELECT * FROM users',
+            $builder->toSql()
         );
     }
 
@@ -339,9 +340,9 @@ public function test_lock_multiple_tables() : void
     {
         $builder = lock_table('users', 'orders')->exclusive();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users, orders IN EXCLUSIVE MODE'
+        self::assertSame(
+            'LOCK TABLE users, orders IN EXCLUSIVE MODE',
+            $builder->toSql()
         );
     }
 
@@ -349,9 +350,9 @@ public function test_lock_table_access_exclusive() : void
     {
         $builder = lock_table('users')->accessExclusive();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users'
+        self::assertSame(
+            'LOCK TABLE users',
+            $builder->toSql()
         );
     }
 
@@ -359,9 +360,9 @@ public function test_lock_table_access_share() : void
     {
         $builder = lock_table('users')->accessShare();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users IN ACCESS SHARE MODE'
+        self::assertSame(
+            'LOCK TABLE users IN ACCESS SHARE MODE',
+            $builder->toSql()
         );
     }
 
@@ -369,9 +370,9 @@ public function test_lock_table_default() : void
     {
         $builder = lock_table('users');
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users'
+        self::assertSame(
+            'LOCK TABLE users',
+            $builder->toSql()
         );
     }
 
@@ -379,9 +380,9 @@ public function test_lock_table_exclusive() : void
     {
         $builder = lock_table('users')->exclusive();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users IN EXCLUSIVE MODE'
+        self::assertSame(
+            'LOCK TABLE users IN EXCLUSIVE MODE',
+            $builder->toSql()
         );
     }
 
@@ -389,9 +390,9 @@ public function test_lock_table_nowait() : void
     {
         $builder = lock_table('users')->exclusive()->nowait();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users IN EXCLUSIVE MODE NOWAIT'
+        self::assertSame(
+            'LOCK TABLE users IN EXCLUSIVE MODE NOWAIT',
+            $builder->toSql()
         );
     }
 
@@ -399,9 +400,9 @@ public function test_lock_table_row_exclusive() : void
     {
         $builder = lock_table('users')->rowExclusive();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users IN ROW EXCLUSIVE MODE'
+        self::assertSame(
+            'LOCK TABLE users IN ROW EXCLUSIVE MODE',
+            $builder->toSql()
         );
     }
 
@@ -409,9 +410,9 @@ public function test_lock_table_row_share() : void
     {
         $builder = lock_table('users')->rowShare();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users IN ROW SHARE MODE'
+        self::assertSame(
+            'LOCK TABLE users IN ROW SHARE MODE',
+            $builder->toSql()
         );
     }
 
@@ -419,9 +420,9 @@ public function test_lock_table_share() : void
     {
         $builder = lock_table('users')->share();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users IN SHARE MODE'
+        self::assertSame(
+            'LOCK TABLE users IN SHARE MODE',
+            $builder->toSql()
         );
     }
 
@@ -429,9 +430,9 @@ public function test_lock_table_share_row_exclusive() : void
     {
         $builder = lock_table('users')->shareRowExclusive();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users IN SHARE ROW EXCLUSIVE MODE'
+        self::assertSame(
+            'LOCK TABLE users IN SHARE ROW EXCLUSIVE MODE',
+            $builder->toSql()
         );
     }
 
@@ -439,9 +440,9 @@ public function test_lock_table_share_update_exclusive() : void
     {
         $builder = lock_table('users')->shareUpdateExclusive();
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users IN SHARE UPDATE EXCLUSIVE MODE'
+        self::assertSame(
+            'LOCK TABLE users IN SHARE UPDATE EXCLUSIVE MODE',
+            $builder->toSql()
         );
     }
 
@@ -449,9 +450,9 @@ public function test_lock_table_with_mode_enum() : void
     {
         $builder = lock_table('users')->inMode(LockMode::EXCLUSIVE);
 
-        $this->assertLockQuery(
-            $builder,
-            'LOCK TABLE users IN EXCLUSIVE MODE'
+        self::assertSame(
+            'LOCK TABLE users IN EXCLUSIVE MODE',
+            $builder->toSql()
         );
     }
 
@@ -459,9 +460,9 @@ public function test_vacuum_all_tables() : void
     {
         $builder = vacuum();
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM'
+        self::assertSame(
+            'VACUUM',
+            $builder->toSql()
         );
     }
 
@@ -469,9 +470,9 @@ public function test_vacuum_analyze() : void
     {
         $builder = vacuum()->analyze()->tables('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (ANALYZE) users'
+        self::assertSame(
+            'VACUUM (ANALYZE) users',
+            $builder->toSql()
         );
     }
 
@@ -479,9 +480,9 @@ public function test_vacuum_disable_page_skipping() : void
     {
         $builder = vacuum()->disablePageSkipping()->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (DISABLE_PAGE_SKIPPING) users'
+        self::assertSame(
+            'VACUUM (DISABLE_PAGE_SKIPPING) users',
+            $builder->toSql()
         );
     }
 
@@ -489,9 +490,9 @@ public function test_vacuum_freeze() : void
     {
         $builder = vacuum()->freeze()->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (FREEZE) users'
+        self::assertSame(
+            'VACUUM (FREEZE) users',
+            $builder->toSql()
         );
     }
 
@@ -499,9 +500,9 @@ public function test_vacuum_full() : void
     {
         $builder = vacuum()->full()->tables('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (FULL) users'
+        self::assertSame(
+            'VACUUM (FULL) users',
+            $builder->toSql()
         );
     }
 
@@ -509,9 +510,9 @@ public function test_vacuum_full_analyze_verbose() : void
     {
         $builder = vacuum()->full()->analyze()->verbose()->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (FULL, VERBOSE, ANALYZE) users'
+        self::assertSame(
+            'VACUUM (FULL, VERBOSE, ANALYZE) users',
+            $builder->toSql()
         );
     }
 
@@ -519,9 +520,9 @@ public function test_vacuum_index_cleanup_off() : void
     {
         $builder = vacuum()->indexCleanup(IndexCleanup::OFF)->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (INDEX_CLEANUP OFF) users'
+        self::assertSame(
+            'VACUUM (INDEX_CLEANUP OFF) users',
+            $builder->toSql()
         );
     }
 
@@ -529,9 +530,9 @@ public function test_vacuum_index_cleanup_on() : void
     {
         $builder = vacuum()->indexCleanup(IndexCleanup::ON)->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (INDEX_CLEANUP ON) users'
+        self::assertSame(
+            'VACUUM (INDEX_CLEANUP ON) users',
+            $builder->toSql()
         );
     }
 
@@ -539,9 +540,9 @@ public function test_vacuum_multiple_tables() : void
     {
         $builder = vacuum()->tables('users', 'orders', 'products');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM users, orders, products'
+        self::assertSame(
+            'VACUUM users, orders, products',
+            $builder->toSql()
         );
     }
 
@@ -549,9 +550,9 @@ public function test_vacuum_parallel() : void
     {
         $builder = vacuum()->parallel(4)->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (PARALLEL 4) users'
+        self::assertSame(
+            'VACUUM (PARALLEL 4) users',
+            $builder->toSql()
         );
     }
 
@@ -559,9 +560,9 @@ public function test_vacuum_process_main() : void
     {
         $builder = vacuum()->processMain(true)->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (PROCESS_MAIN 1) users'
+        self::assertSame(
+            'VACUUM (PROCESS_MAIN 1) users',
+            $builder->toSql()
         );
     }
 
@@ -569,9 +570,9 @@ public function test_vacuum_process_toast() : void
     {
         $builder = vacuum()->processToast(false)->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (PROCESS_TOAST 0) users'
+        self::assertSame(
+            'VACUUM (PROCESS_TOAST 0) users',
+            $builder->toSql()
         );
     }
 
@@ -579,9 +580,9 @@ public function test_vacuum_single_table() : void
     {
         $builder = vacuum()->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM users'
+        self::assertSame(
+            'VACUUM users',
+            $builder->toSql()
         );
     }
 
@@ -589,9 +590,9 @@ public function test_vacuum_skip_locked() : void
     {
         $builder = vacuum()->skipLocked()->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (SKIP_LOCKED) users'
+        self::assertSame(
+            'VACUUM (SKIP_LOCKED) users',
+            $builder->toSql()
         );
     }
 
@@ -599,9 +600,9 @@ public function test_vacuum_table_with_columns() : void
     {
         $builder = vacuum()->table('users', 'email', 'name');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM users(email, name)'
+        self::assertSame(
+            'VACUUM users(email, name)',
+            $builder->toSql()
         );
     }
 
@@ -609,9 +610,9 @@ public function test_vacuum_table_with_schema() : void
     {
         $builder = vacuum()->table('public.users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM public.users'
+        self::assertSame(
+            'VACUUM public.users',
+            $builder->toSql()
         );
     }
 
@@ -619,9 +620,9 @@ public function test_vacuum_truncate_false() : void
     {
         $builder = vacuum()->truncate(false)->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (TRUNCATE 0) users'
+        self::assertSame(
+            'VACUUM (TRUNCATE 0) users',
+            $builder->toSql()
         );
     }
 
@@ -629,9 +630,9 @@ public function test_vacuum_truncate_true() : void
     {
         $builder = vacuum()->truncate(true)->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (TRUNCATE 1) users'
+        self::assertSame(
+            'VACUUM (TRUNCATE 1) users',
+            $builder->toSql()
         );
     }
 
@@ -639,9 +640,9 @@ public function test_vacuum_verbose() : void
     {
         $builder = vacuum()->verbose()->table('users');
 
-        $this->assertVacuumQuery(
-            $builder,
-            'VACUUM (VERBOSE) users'
+        self::assertSame(
+            'VACUUM (VERBOSE) users',
+            $builder->toSql()
         );
     }
 }
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/CatalogTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/CatalogTest.php
new file mode 100644
index 0000000000..8a9fa9790f
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/CatalogTest.php
@@ -0,0 +1,907 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{schema, schema_column_integer, schema_column_text, schema_column_varchar, schema_table};
+
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnType, ReferentialAction};
+use Flow\PostgreSql\Schema\{Catalog, Column, Domain, Extension, Func, FunctionVolatility, IdentityGeneration, Index, IndexMethod, MaterializedView, PartitionStrategy, Procedure, Schema, Sequence, Table, Trigger, TriggerEvent, TriggerTiming, View};
+use Flow\PostgreSql\Schema\Constraint\{CheckConstraint, ExcludeConstraint, ForeignKey, PrimaryKey, UniqueConstraint};
+use Flow\PostgreSql\Schema\Exception\SchemaException;
+use PHPUnit\Framework\TestCase;
+
+final class CatalogTest extends TestCase
+{
+    public function test_all_returns_all_schemas() : void
+    {
+        $catalog = new Catalog([
+            schema('public'),
+            schema('audit'),
+        ]);
+
+        self::assertCount(2, $catalog->all());
+        self::assertSame('public', $catalog->all()[0]->name);
+        self::assertSame('audit', $catalog->all()[1]->name);
+    }
+
+    public function test_empty_catalog() : void
+    {
+        $catalog = new Catalog([]);
+
+        self::assertSame([], $catalog->all());
+        self::assertSame([], $catalog->names());
+        self::assertFalse($catalog->has('anything'));
+    }
+
+    public function test_empty_catalog_normalize_and_from_array() : void
+    {
+        $catalog = new Catalog([]);
+
+        $normalized = $catalog->normalize();
+
+        self::assertSame(['schemas' => []], $normalized);
+        self::assertSame([], Catalog::fromArray($normalized)->all());
+    }
+
+    public function test_from_array_catalog_with_empty_schema() : void
+    {
+        $catalog = Catalog::fromArray([
+            'schemas' => [
+                ['name' => 'public'],
+                ['name' => 'audit'],
+            ],
+        ]);
+
+        self::assertSame(['public', 'audit'], $catalog->names());
+        self::assertSame([], $catalog->get('public')->tables);
+    }
+
+    public function test_from_array_column_with_generated_expression() : void
+    {
+        $column = Column::fromArray([
+            'name' => 'full_name',
+            'type' => ['name' => 'text', 'schema' => 'pg_catalog'],
+            'nullable' => true,
+            'is_generated' => true,
+            'generation_expression' => "first_name || ' ' || last_name",
+        ]);
+
+        self::assertTrue($column->isGenerated);
+        self::assertSame("first_name || ' ' || last_name", $column->generationExpression);
+    }
+
+    public function test_from_array_column_with_identity_always() : void
+    {
+        $column = Column::fromArray([
+            'name' => 'id',
+            'type' => ['name' => 'int8', 'schema' => 'pg_catalog'],
+            'nullable' => false,
+            'is_identity' => true,
+            'identity_generation' => 'a',
+        ]);
+
+        self::assertSame('id', $column->name);
+        self::assertTrue($column->isIdentity);
+        self::assertSame(IdentityGeneration::ALWAYS, $column->identityGeneration);
+    }
+
+    public function test_from_array_column_with_identity_by_default() : void
+    {
+        $column = Column::fromArray([
+            'name' => 'id',
+            'type' => ['name' => 'int8', 'schema' => 'pg_catalog'],
+            'nullable' => false,
+            'is_identity' => true,
+            'identity_generation' => 'd',
+        ]);
+
+        self::assertSame(IdentityGeneration::BY_DEFAULT, $column->identityGeneration);
+    }
+
+    public function test_from_array_table_with_defaults_only() : void
+    {
+        $table = Table::fromArray([
+            'name' => 'users',
+            'columns' => [
+                ['name' => 'id', 'type' => ['name' => 'int4', 'schema' => 'pg_catalog'], 'nullable' => false],
+            ],
+        ]);
+
+        self::assertSame('public', $table->schema);
+        self::assertSame('users', $table->name);
+        self::assertCount(1, $table->columns);
+        self::assertNull($table->primaryKey);
+        self::assertSame([], $table->indexes);
+        self::assertSame([], $table->foreignKeys);
+        self::assertFalse($table->unlogged);
+        self::assertNull($table->partitionStrategy);
+        self::assertNull($table->tablespace);
+    }
+
+    public function test_get_returns_schema_by_name() : void
+    {
+        $catalog = new Catalog([
+            schema('public'),
+            schema('audit'),
+        ]);
+
+        self::assertSame('audit', $catalog->get('audit')->name);
+    }
+
+    public function test_get_throws_when_schema_not_found() : void
+    {
+        $catalog = new Catalog([schema('public')]);
+
+        $this->expectException(SchemaException::class);
+        $catalog->get('missing');
+    }
+
+    public function test_has_returns_false_for_missing_schema() : void
+    {
+        $catalog = new Catalog([schema('public')]);
+
+        self::assertFalse($catalog->has('missing'));
+    }
+
+    public function test_has_returns_true_for_existing_schema() : void
+    {
+        $catalog = new Catalog([schema('public')]);
+
+        self::assertTrue($catalog->has('public'));
+    }
+
+    public function test_merge_catalog_with_empty_catalog() : void
+    {
+        $catalog = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ])]);
+
+        $result = $catalog->merge(new Catalog([]));
+
+        self::assertSame(['public'], $result->names());
+        self::assertTrue($result->get('public')->hasTable('users'));
+    }
+
+    public function test_merge_catalogs_with_different_schemas() : void
+    {
+        $first = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ])]);
+        $second = new Catalog([schema('audit', tables: [
+            schema_table('logs', [schema_column_integer('id', nullable: false)]),
+        ])]);
+
+        $result = $first->merge($second);
+
+        self::assertSame(['public', 'audit'], $result->names());
+        self::assertTrue($result->get('public')->hasTable('users'));
+        self::assertTrue($result->get('audit')->hasTable('logs'));
+    }
+
+    public function test_merge_catalogs_with_mixed_schemas_and_overlapping_tables() : void
+    {
+        $first = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', nullable: false)]),
+                schema_table('posts', [schema_column_integer('id', nullable: false)]),
+            ]),
+            schema('audit'),
+        ]);
+        $second = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_text('name')]),
+            ]),
+            schema('reporting', tables: [
+                schema_table('reports', [schema_column_integer('id', nullable: false)]),
+            ]),
+        ]);
+
+        $result = $first->merge($second);
+
+        self::assertSame(['public', 'audit', 'reporting'], $result->names());
+        self::assertTrue($result->get('public')->hasTable('users'));
+        self::assertTrue($result->get('public')->hasTable('posts'));
+        self::assertCount(1, $result->get('public')->table('users')->columns);
+        self::assertSame('name', $result->get('public')->table('users')->columns[0]->name);
+        self::assertTrue($result->has('reporting'));
+    }
+
+    public function test_merge_catalogs_with_same_schema_merges_tables() : void
+    {
+        $first = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ])]);
+        $second = new Catalog([schema('public', tables: [
+            schema_table('posts', [schema_column_integer('id', nullable: false)]),
+        ])]);
+
+        $result = $first->merge($second);
+
+        self::assertSame(['public'], $result->names());
+        self::assertTrue($result->get('public')->hasTable('users'));
+        self::assertTrue($result->get('public')->hasTable('posts'));
+    }
+
+    public function test_merge_catalogs_with_same_table_later_overrides() : void
+    {
+        $first = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ])]);
+        $second = new Catalog([schema('public', tables: [
+            schema_table('users', [
+                schema_column_integer('id', nullable: false),
+                schema_column_varchar('email', 255, nullable: false),
+            ]),
+        ])]);
+
+        $result = $first->merge($second);
+
+        self::assertCount(2, $result->get('public')->table('users')->columns);
+    }
+
+    public function test_merge_empty_catalog_with_catalog() : void
+    {
+        $catalog = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ])]);
+
+        $result = (new Catalog([]))->merge($catalog);
+
+        self::assertSame(['public'], $result->names());
+        self::assertTrue($result->get('public')->hasTable('users'));
+    }
+
+    public function test_merge_two_empty_catalogs() : void
+    {
+        $result = (new Catalog([]))->merge(new Catalog([]));
+
+        self::assertSame([], $result->all());
+    }
+
+    public function test_names_returns_all_schema_names() : void
+    {
+        $catalog = new Catalog([
+            schema('public'),
+            schema('audit'),
+            schema('staging'),
+        ]);
+
+        self::assertSame(['public', 'audit', 'staging'], $catalog->names());
+    }
+
+    public function test_normalize_and_from_array_with_all_column_types() : void
+    {
+        $columns = [
+            new Column('col_varchar', ColumnType::varchar(255), true),
+            new Column('col_numeric', ColumnType::numeric(10, 2), false),
+            new Column('col_text_arr', ColumnType::array(ColumnType::text()), true),
+            new Column('col_custom', ColumnType::custom('my_enum', 'my_schema'), true),
+            new Column('col_char', ColumnType::char(10), true),
+            new Column('col_timestamp', ColumnType::timestamp(6), true),
+            new Column('col_timestamptz', ColumnType::timestamptz(3), true),
+            new Column('col_time', ColumnType::time(0), true),
+        ];
+
+        $table = new Table('public', 'type_test', $columns);
+        $catalog = new Catalog([new Schema('public', [$table])]);
+
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredTable = $restored->get('public')->table('type_test');
+
+        foreach ($columns as $i => $originalColumn) {
+            self::assertTrue(
+                $originalColumn->type->isEqual($restoredTable->columns[$i]->type),
+                \sprintf('Column type mismatch for %s', $originalColumn->name),
+            );
+        }
+    }
+
+    public function test_normalize_and_from_array_with_all_index_methods() : void
+    {
+        $indexes = [];
+
+        foreach (IndexMethod::cases() as $method) {
+            $indexes[] = new Index('idx_' . $method->value, ['col1'], method: $method);
+        }
+
+        $table = new Table(
+            'public',
+            'index_test',
+            [new Column('col1', ColumnType::text(), true)],
+            indexes: $indexes,
+        );
+
+        $catalog = new Catalog([new Schema('public', [$table])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredIndexes = $restored->get('public')->table('index_test')->indexes;
+
+        foreach (IndexMethod::cases() as $i => $method) {
+            self::assertSame($method, $restoredIndexes[$i]->method);
+        }
+    }
+
+    public function test_normalize_and_from_array_with_all_referential_actions() : void
+    {
+        $foreignKeys = [];
+
+        foreach (ReferentialAction::cases() as $action) {
+            $foreignKeys[] = new ForeignKey(
+                'fk_' . $action->value,
+                ['col1'],
+                'public',
+                'ref_table',
+                ['id'],
+                onUpdate: $action,
+                onDelete: $action,
+            );
+        }
+
+        $table = new Table(
+            'public',
+            'fk_test',
+            [new Column('col1', ColumnType::integer(), false)],
+            foreignKeys: $foreignKeys,
+        );
+
+        $catalog = new Catalog([new Schema('public', [$table])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredFks = $restored->get('public')->table('fk_test')->foreignKeys;
+
+        foreach (ReferentialAction::cases() as $i => $action) {
+            self::assertSame($action, $restoredFks[$i]->onUpdate);
+            self::assertSame($action, $restoredFks[$i]->onDelete);
+        }
+    }
+
+    public function test_normalize_and_from_array_with_all_trigger_events() : void
+    {
+        $trigger = new Trigger(
+            'trigger_all_events',
+            'test_table',
+            TriggerTiming::AFTER,
+            [TriggerEvent::INSERT, TriggerEvent::UPDATE, TriggerEvent::DELETE, TriggerEvent::TRUNCATE],
+            'my_function',
+            forEachRow: true,
+            whenCondition: 'NEW.status IS DISTINCT FROM OLD.status',
+        );
+
+        $table = new Table(
+            'public',
+            'test_table',
+            [new Column('id', ColumnType::integer(), false)],
+            triggers: [$trigger],
+        );
+
+        $catalog = new Catalog([new Schema('public', [$table])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredTrigger = $restored->get('public')->table('test_table')->triggers[0];
+
+        self::assertSame(
+            [TriggerEvent::INSERT, TriggerEvent::UPDATE, TriggerEvent::DELETE, TriggerEvent::TRUNCATE],
+            $restoredTrigger->events,
+        );
+        self::assertTrue($restoredTrigger->forEachRow);
+        self::assertSame('NEW.status IS DISTINCT FROM OLD.status', $restoredTrigger->whenCondition);
+    }
+
+    public function test_normalize_and_from_array_with_all_trigger_timings_and_events() : void
+    {
+        $triggers = [];
+
+        foreach (TriggerTiming::cases() as $timing) {
+            $triggers[] = new Trigger(
+                'trigger_' . $timing->value,
+                'test_table',
+                $timing,
+                [TriggerEvent::INSERT, TriggerEvent::UPDATE],
+                'my_function',
+            );
+        }
+
+        $table = new Table(
+            'public',
+            'test_table',
+            [new Column('id', ColumnType::integer(), false)],
+            triggers: $triggers,
+        );
+
+        $catalog = new Catalog([new Schema('public', [$table])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredTriggers = $restored->get('public')->table('test_table')->triggers;
+
+        foreach (TriggerTiming::cases() as $i => $timing) {
+            self::assertSame($timing, $restoredTriggers[$i]->timing);
+            self::assertSame([TriggerEvent::INSERT, TriggerEvent::UPDATE], $restoredTriggers[$i]->events);
+        }
+    }
+
+    public function test_normalize_and_from_array_with_function_volatility() : void
+    {
+        $functions = [];
+
+        foreach (FunctionVolatility::cases() as $volatility) {
+            $functions[] = new Func(
+                'func_' . $volatility->value,
+                'text',
+                ['text'],
+                'sql',
+                'SELECT $1',
+                volatility: $volatility,
+            );
+        }
+
+        $functions[] = new Func('func_no_volatility', 'void', definition: 'SELECT 1');
+
+        $catalog = new Catalog([new Schema('public', functions: $functions)]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredFunctions = $restored->get('public')->functions;
+
+        foreach (FunctionVolatility::cases() as $i => $volatility) {
+            self::assertSame($volatility, $restoredFunctions[$i]->volatility);
+        }
+
+        self::assertNull($restoredFunctions[\count(FunctionVolatility::cases())]->volatility);
+    }
+
+    public function test_normalize_and_from_array_with_partition_strategies() : void
+    {
+        $tables = [];
+
+        foreach (PartitionStrategy::cases() as $strategy) {
+            $tables[] = new Table(
+                'public',
+                'partitioned_' . $strategy->value,
+                [new Column('id', ColumnType::integer(), false)],
+                partitionStrategy: $strategy,
+                partitionColumns: ['id'],
+            );
+        }
+
+        $catalog = new Catalog([new Schema('public', $tables)]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        foreach (PartitionStrategy::cases() as $i => $strategy) {
+            self::assertSame($strategy, $restored->get('public')->tables[$i]->partitionStrategy);
+            self::assertSame(['id'], $restored->get('public')->tables[$i]->partitionColumns);
+        }
+    }
+
+    public function test_normalize_and_from_array_with_schema_containing_all_object_types() : void
+    {
+        $catalog = new Catalog([
+            new Schema(
+                'public',
+                tables: [
+                    new Table(
+                        'public',
+                        'users',
+                        [
+                            new Column('id', ColumnType::bigint(), false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS),
+                            new Column('email', ColumnType::varchar(255), false),
+                            new Column('name', ColumnType::text(), true),
+                        ],
+                        primaryKey: new PrimaryKey(['id'], 'users_pkey'),
+                        indexes: [
+                            new Index('idx_users_email', ['email'], unique: true),
+                        ],
+                        uniqueConstraints: [
+                            new UniqueConstraint(['email'], 'uq_email'),
+                        ],
+                    ),
+                ],
+                sequences: [
+                    new Sequence('users_id_seq', 'bigint', startValue: 1, incrementBy: 1),
+                ],
+                views: [
+                    new View('active_users', 'SELECT * FROM users WHERE active = true'),
+                ],
+                materializedViews: [
+                    new MaterializedView(
+                        'user_stats',
+                        'SELECT count(*) FROM users',
+                        [new Index('idx_user_stats', ['count'])],
+                    ),
+                ],
+                functions: [
+                    new Func('get_user', 'text', ['integer'], 'sql', 'SELECT name FROM users WHERE id = $1', isStrict: true, volatility: FunctionVolatility::STABLE),
+                ],
+                procedures: [
+                    new Procedure('cleanup', [], 'sql', 'DELETE FROM users WHERE active = false'),
+                ],
+                domains: [
+                    new Domain(
+                        'email_address',
+                        ColumnType::varchar(255),
+                        nullable: false,
+                        checkConstraints: [new CheckConstraint("VALUE ~ '^.+@.+$'", 'email_format_check')],
+                    ),
+                ],
+                extensions: [
+                    new Extension('uuid-ossp', '1.1'),
+                ],
+            ),
+        ]);
+
+        $normalized = $catalog->normalize();
+        $restored = Catalog::fromArray($normalized);
+
+        self::assertSame(['public'], $restored->names());
+
+        $restoredSchema = $restored->get('public');
+
+        self::assertCount(1, $restoredSchema->tables);
+        self::assertCount(1, $restoredSchema->sequences);
+        self::assertCount(1, $restoredSchema->views);
+        self::assertCount(1, $restoredSchema->materializedViews);
+        self::assertCount(1, $restoredSchema->functions);
+        self::assertCount(1, $restoredSchema->procedures);
+        self::assertCount(1, $restoredSchema->domains);
+        self::assertCount(1, $restoredSchema->extensions);
+
+        $restoredTable = $restoredSchema->table('users');
+        self::assertCount(3, $restoredTable->columns);
+        self::assertSame('users_pkey', $restoredTable->primaryKey->name);
+        self::assertCount(1, $restoredTable->indexes);
+        self::assertCount(1, $restoredTable->uniqueConstraints);
+
+        self::assertSame('users_id_seq', $restoredSchema->sequences[0]->name);
+        self::assertSame('active_users', $restoredSchema->views[0]->name);
+        self::assertSame('user_stats', $restoredSchema->materializedViews[0]->name);
+        self::assertSame('get_user', $restoredSchema->functions[0]->name);
+        self::assertSame('cleanup', $restoredSchema->procedures[0]->name);
+        self::assertSame('email_address', $restoredSchema->domains[0]->name);
+        self::assertSame('uuid-ossp', $restoredSchema->extensions[0]->name);
+        self::assertSame('1.1', $restoredSchema->extensions[0]->version);
+    }
+
+    public function test_normalize_and_from_array_with_table_all_constraints() : void
+    {
+        $table = new Table(
+            'public',
+            'orders',
+            [
+                new Column('id', ColumnType::integer(), false),
+                new Column('user_id', ColumnType::integer(), false),
+                new Column('amount', ColumnType::numeric(10, 2), false),
+                new Column('status', ColumnType::text(), false, default: "'pending'"),
+            ],
+            primaryKey: new PrimaryKey(['id'], 'orders_pkey'),
+            indexes: [
+                new Index('idx_orders_user', ['user_id'], method: IndexMethod::BTREE),
+                new Index('idx_orders_amount', ['amount'], method: IndexMethod::BRIN),
+            ],
+            foreignKeys: [
+                new ForeignKey(
+                    'fk_orders_user',
+                    ['user_id'],
+                    'public',
+                    'users',
+                    ['id'],
+                    onUpdate: ReferentialAction::CASCADE,
+                    onDelete: ReferentialAction::SET_NULL,
+                    deferrable: true,
+                    initiallyDeferred: true,
+                ),
+            ],
+            uniqueConstraints: [
+                new UniqueConstraint(['id', 'user_id'], 'uq_order_user', nullsNotDistinct: true),
+            ],
+            checkConstraints: [
+                new CheckConstraint('amount > 0', 'chk_positive_amount', noInherit: true),
+            ],
+            excludeConstraints: [
+                new ExcludeConstraint('USING gist (daterange(start_date, end_date) WITH &&)', 'excl_date_range'),
+            ],
+            triggers: [
+                new Trigger(
+                    'trg_orders_audit',
+                    'orders',
+                    TriggerTiming::AFTER,
+                    [TriggerEvent::INSERT, TriggerEvent::UPDATE, TriggerEvent::DELETE],
+                    'audit_function',
+                    forEachRow: true,
+                    whenCondition: 'NEW.amount > 1000',
+                ),
+            ],
+            unlogged: true,
+            tablespace: 'fast_storage',
+        );
+
+        $catalog = new Catalog([new Schema('public', [$table])]);
+        $normalized = $catalog->normalize();
+        $restored = Catalog::fromArray($normalized);
+
+        $restoredTable = $restored->get('public')->table('orders');
+
+        self::assertSame('orders_pkey', $restoredTable->primaryKey->name);
+        self::assertSame(['id'], $restoredTable->primaryKey->columns);
+
+        self::assertCount(2, $restoredTable->indexes);
+        self::assertSame(IndexMethod::BRIN, $restoredTable->indexes[1]->method);
+
+        self::assertCount(1, $restoredTable->foreignKeys);
+        self::assertSame(ReferentialAction::CASCADE, $restoredTable->foreignKeys[0]->onUpdate);
+        self::assertSame(ReferentialAction::SET_NULL, $restoredTable->foreignKeys[0]->onDelete);
+        self::assertTrue($restoredTable->foreignKeys[0]->deferrable);
+        self::assertTrue($restoredTable->foreignKeys[0]->initiallyDeferred);
+
+        self::assertCount(1, $restoredTable->uniqueConstraints);
+        self::assertTrue($restoredTable->uniqueConstraints[0]->nullsNotDistinct);
+
+        self::assertCount(1, $restoredTable->checkConstraints);
+        self::assertTrue($restoredTable->checkConstraints[0]->noInherit);
+        self::assertSame('amount > 0', $restoredTable->checkConstraints[0]->expression);
+
+        self::assertCount(1, $restoredTable->excludeConstraints);
+        self::assertSame('excl_date_range', $restoredTable->excludeConstraints[0]->name);
+
+        self::assertCount(1, $restoredTable->triggers);
+        self::assertSame(TriggerTiming::AFTER, $restoredTable->triggers[0]->timing);
+        self::assertTrue($restoredTable->triggers[0]->forEachRow);
+        self::assertSame('NEW.amount > 1000', $restoredTable->triggers[0]->whenCondition);
+
+        self::assertTrue($restoredTable->unlogged);
+        self::assertSame('fast_storage', $restoredTable->tablespace);
+    }
+
+    public function test_normalize_and_from_array_with_table_inherits() : void
+    {
+        $table = new Table(
+            'public',
+            'child_table',
+            [new Column('id', ColumnType::integer(), false)],
+            inherits: ['parent_table_1', 'parent_table_2'],
+        );
+
+        $catalog = new Catalog([new Schema('public', [$table])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        self::assertSame(['parent_table_1', 'parent_table_2'], $restored->get('public')->table('child_table')->inherits);
+    }
+
+    public function test_normalize_produces_expected_structure() : void
+    {
+        $catalog = new Catalog([
+            new Schema('public', [
+                new Table(
+                    'public',
+                    'simple',
+                    [new Column('id', ColumnType::integer(), false)],
+                ),
+            ]),
+        ]);
+
+        $normalized = $catalog->normalize();
+
+        self::assertArrayHasKey('schemas', $normalized);
+        self::assertCount(1, $normalized['schemas']);
+        self::assertSame('public', $normalized['schemas'][0]['name']);
+        self::assertArrayHasKey('tables', $normalized['schemas'][0]);
+        self::assertSame('simple', $normalized['schemas'][0]['tables'][0]['name']);
+        self::assertSame('public', $normalized['schemas'][0]['tables'][0]['schema']);
+        self::assertArrayHasKey('columns', $normalized['schemas'][0]['tables'][0]);
+        self::assertSame('id', $normalized['schemas'][0]['tables'][0]['columns'][0]['name']);
+        self::assertSame('int4', $normalized['schemas'][0]['tables'][0]['columns'][0]['type']['name']);
+    }
+
+    public function test_round_trip_preserves_column_default_value() : void
+    {
+        $table = new Table(
+            'public',
+            'defaults',
+            [
+                new Column('status', ColumnType::text(), false, default: "'active'"),
+                new Column('count', ColumnType::integer(), false, default: '0'),
+                new Column('no_default', ColumnType::text(), true),
+            ],
+        );
+
+        $catalog = new Catalog([new Schema('public', [$table])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredTable = $restored->get('public')->table('defaults');
+        self::assertSame("'active'", $restoredTable->column('status')->default);
+        self::assertSame('0', $restoredTable->column('count')->default);
+        self::assertNull($restoredTable->column('no_default')->default);
+    }
+
+    public function test_round_trip_preserves_domain_with_check_constraints() : void
+    {
+        $domain = new Domain(
+            'positive_int',
+            ColumnType::integer(),
+            nullable: false,
+            default: '0',
+            checkConstraints: [
+                new CheckConstraint('VALUE > 0', 'chk_positive'),
+                new CheckConstraint('VALUE < 1000000', 'chk_max'),
+            ],
+        );
+
+        $catalog = new Catalog([new Schema('public', domains: [$domain])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredDomain = $restored->get('public')->domains[0];
+        self::assertSame('positive_int', $restoredDomain->name);
+        self::assertFalse($restoredDomain->nullable);
+        self::assertSame('0', $restoredDomain->default);
+        self::assertCount(2, $restoredDomain->checkConstraints);
+        self::assertSame('VALUE > 0', $restoredDomain->checkConstraints[0]->expression);
+        self::assertSame('chk_positive', $restoredDomain->checkConstraints[0]->name);
+    }
+
+    public function test_round_trip_preserves_index_predicate() : void
+    {
+        $index = new Index('idx_partial', ['status'], predicate: "status = 'active'");
+
+        $table = new Table(
+            'public',
+            'test',
+            [new Column('status', ColumnType::text(), true)],
+            indexes: [$index],
+        );
+
+        $catalog = new Catalog([new Schema('public', [$table])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        self::assertSame("status = 'active'", $restored->get('public')->table('test')->indexes[0]->predicate);
+    }
+
+    public function test_round_trip_preserves_materialized_view_indexes() : void
+    {
+        $mv = new MaterializedView(
+            'stats',
+            'SELECT count(*) as cnt FROM users',
+            [
+                new Index('idx_stats_cnt', ['cnt'], unique: true, method: IndexMethod::BTREE),
+            ],
+        );
+
+        $catalog = new Catalog([new Schema('public', materializedViews: [$mv])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredMv = $restored->get('public')->materializedViews[0];
+        self::assertSame('stats', $restoredMv->name);
+        self::assertCount(1, $restoredMv->indexes);
+        self::assertTrue($restoredMv->indexes[0]->unique);
+        self::assertSame('idx_stats_cnt', $restoredMv->indexes[0]->name);
+    }
+
+    public function test_round_trip_preserves_multiple_schemas() : void
+    {
+        $catalog = new Catalog([
+            new Schema('public', [
+                new Table('public', 'users', [new Column('id', ColumnType::integer(), false)]),
+            ]),
+            new Schema('audit', [
+                new Table('audit', 'logs', [new Column('id', ColumnType::bigint(), false)]),
+            ]),
+            new Schema('staging'),
+        ]);
+
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        self::assertSame(['public', 'audit', 'staging'], $restored->names());
+        self::assertTrue($restored->get('public')->hasTable('users'));
+        self::assertTrue($restored->get('audit')->hasTable('logs'));
+        self::assertSame([], $restored->get('staging')->tables);
+    }
+
+    public function test_round_trip_preserves_nullable_fields_as_null() : void
+    {
+        $table = new Table(
+            'public',
+            'nullable_test',
+            [
+                new Column('id', ColumnType::integer(), false),
+            ],
+        );
+
+        $catalog = new Catalog([new Schema('public', [$table])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredTable = $restored->get('public')->table('nullable_test');
+        self::assertNull($restoredTable->primaryKey);
+        self::assertNull($restoredTable->partitionStrategy);
+        self::assertNull($restoredTable->tablespace);
+        self::assertNull($restoredTable->columns[0]->default);
+        self::assertNull($restoredTable->columns[0]->identityGeneration);
+        self::assertNull($restoredTable->columns[0]->generationExpression);
+        self::assertNull($restoredTable->columns[0]->ordinalPosition);
+    }
+
+    public function test_round_trip_preserves_procedure() : void
+    {
+        $procedure = new Procedure(
+            'cleanup_proc',
+            ['integer', 'text'],
+            'plpgsql',
+            'BEGIN DELETE FROM logs WHERE age > $1; END;',
+        );
+
+        $catalog = new Catalog([new Schema('public', procedures: [$procedure])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredProc = $restored->get('public')->procedures[0];
+        self::assertSame('cleanup_proc', $restoredProc->name);
+        self::assertSame(['integer', 'text'], $restoredProc->argumentTypes);
+        self::assertSame('plpgsql', $restoredProc->language);
+        self::assertSame('BEGIN DELETE FROM logs WHERE age > $1; END;', $restoredProc->definition);
+    }
+
+    public function test_round_trip_preserves_sequence_all_fields() : void
+    {
+        $sequence = new Sequence(
+            'custom_seq',
+            'integer',
+            startValue: 100,
+            minValue: 1,
+            maxValue: 999999,
+            incrementBy: 5,
+            cycle: true,
+            cacheValue: 10,
+            ownedByTable: 'users',
+            ownedByColumn: 'id',
+        );
+
+        $catalog = new Catalog([new Schema('public', sequences: [$sequence])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredSeq = $restored->get('public')->sequences[0];
+        self::assertSame('custom_seq', $restoredSeq->name);
+        self::assertSame('integer', $restoredSeq->dataType);
+        self::assertSame(100, $restoredSeq->startValue);
+        self::assertSame(1, $restoredSeq->minValue);
+        self::assertSame(999999, $restoredSeq->maxValue);
+        self::assertSame(5, $restoredSeq->incrementBy);
+        self::assertTrue($restoredSeq->cycle);
+        self::assertSame(10, $restoredSeq->cacheValue);
+        self::assertSame('users', $restoredSeq->ownedByTable);
+        self::assertSame('id', $restoredSeq->ownedByColumn);
+    }
+
+    public function test_round_trip_preserves_strict_function() : void
+    {
+        $func = new Func(
+            'my_func',
+            'boolean',
+            ['text', 'integer'],
+            'plpgsql',
+            'BEGIN RETURN true; END;',
+            isStrict: true,
+            volatility: FunctionVolatility::IMMUTABLE,
+        );
+
+        $catalog = new Catalog([new Schema('public', functions: [$func])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredFunc = $restored->get('public')->functions[0];
+        self::assertSame('my_func', $restoredFunc->name);
+        self::assertSame('boolean', $restoredFunc->returnType);
+        self::assertSame(['text', 'integer'], $restoredFunc->argumentTypes);
+        self::assertSame('plpgsql', $restoredFunc->language);
+        self::assertTrue($restoredFunc->isStrict);
+        self::assertSame(FunctionVolatility::IMMUTABLE, $restoredFunc->volatility);
+    }
+
+    public function test_round_trip_preserves_view() : void
+    {
+        $view = new View('my_view', 'SELECT id, name FROM users', isUpdatable: true);
+
+        $catalog = new Catalog([new Schema('public', views: [$view])]);
+        $restored = Catalog::fromArray($catalog->normalize());
+
+        $restoredView = $restored->get('public')->views[0];
+        self::assertSame('my_view', $restoredView->name);
+        self::assertSame('SELECT id, name FROM users', $restoredView->definition);
+        self::assertTrue($restoredView->isUpdatable);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ChainCatalogProviderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ChainCatalogProviderTest.php
new file mode 100644
index 0000000000..e23faaf3c5
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ChainCatalogProviderTest.php
@@ -0,0 +1,99 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{chain_catalog_provider, manual_catalog_provider, schema, schema_column_integer, schema_column_text, schema_column_varchar, schema_table};
+
+use Flow\PostgreSql\Schema\{Catalog, ChainCatalogProvider};
+use PHPUnit\Framework\TestCase;
+
+final class ChainCatalogProviderTest extends TestCase
+{
+    public function test_empty_chain_returns_empty_catalog() : void
+    {
+        $provider = new ChainCatalogProvider();
+
+        self::assertSame([], $provider->get()->all());
+    }
+
+    public function test_single_provider_returns_its_catalog_unchanged() : void
+    {
+        $catalog = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ])]);
+
+        $provider = chain_catalog_provider(manual_catalog_provider($catalog));
+
+        $result = $provider->get();
+        self::assertSame(['public'], $result->names());
+        self::assertTrue($result->get('public')->hasTable('users'));
+    }
+
+    public function test_three_providers_merged_in_order() : void
+    {
+        $first = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ])]);
+        $second = new Catalog([schema('public', tables: [
+            schema_table('posts', [schema_column_integer('id', nullable: false)]),
+        ])]);
+        $third = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_text('name')]),
+        ])]);
+
+        $provider = chain_catalog_provider(
+            manual_catalog_provider($first),
+            manual_catalog_provider($second),
+            manual_catalog_provider($third),
+        );
+
+        $result = $provider->get();
+        self::assertTrue($result->get('public')->hasTable('users'));
+        self::assertTrue($result->get('public')->hasTable('posts'));
+        self::assertCount(1, $result->get('public')->table('users')->columns);
+        self::assertSame('name', $result->get('public')->table('users')->columns[0]->name);
+    }
+
+    public function test_two_providers_with_distinct_schemas_are_combined() : void
+    {
+        $first = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ])]);
+        $second = new Catalog([schema('audit', tables: [
+            schema_table('logs', [schema_column_integer('id', nullable: false)]),
+        ])]);
+
+        $provider = chain_catalog_provider(
+            manual_catalog_provider($first),
+            manual_catalog_provider($second),
+        );
+
+        $result = $provider->get();
+        self::assertSame(['public', 'audit'], $result->names());
+        self::assertTrue($result->get('public')->hasTable('users'));
+        self::assertTrue($result->get('audit')->hasTable('logs'));
+    }
+
+    public function test_two_providers_with_overlapping_table_later_wins() : void
+    {
+        $first = new Catalog([schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ])]);
+        $second = new Catalog([schema('public', tables: [
+            schema_table('users', [
+                schema_column_integer('id', nullable: false),
+                schema_column_varchar('email', 255, nullable: false),
+            ]),
+        ])]);
+
+        $provider = chain_catalog_provider(
+            manual_catalog_provider($first),
+            manual_catalog_provider($second),
+        );
+
+        $result = $provider->get();
+        self::assertCount(2, $result->get('public')->table('users')->columns);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ColumnTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ColumnTest.php
new file mode 100644
index 0000000000..f36961e32d
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ColumnTest.php
@@ -0,0 +1,141 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{column_type_integer, column_type_text, column_type_varchar, schema_column};
+
+use Flow\PostgreSql\Schema\IdentityGeneration;
+use PHPUnit\Framework\TestCase;
+
+final class ColumnTest extends TestCase
+{
+    public function test_column_construction() : void
+    {
+        $column = schema_column('id', column_type_integer(), nullable: false);
+
+        self::assertSame('id', $column->name);
+        self::assertFalse($column->nullable);
+        self::assertNull($column->default);
+    }
+
+    public function test_column_generated() : void
+    {
+        $column = schema_column('full_name', column_type_text(), isGenerated: true, generationExpression: "first_name || ' ' || last_name");
+
+        self::assertTrue($column->isGenerated);
+        self::assertSame("first_name || ' ' || last_name", $column->generationExpression);
+    }
+
+    public function test_column_identity() : void
+    {
+        $column = schema_column('id', column_type_integer(), nullable: false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS);
+
+        self::assertTrue($column->isIdentity);
+        self::assertSame(IdentityGeneration::ALWAYS, $column->identityGeneration);
+    }
+
+    public function test_column_with_default() : void
+    {
+        $column = schema_column('name', column_type_varchar(255), default: "'unknown'");
+
+        self::assertSame("'unknown'", $column->default);
+    }
+
+    public function test_is_equal_for_identical_columns() : void
+    {
+        $a = schema_column('id', column_type_integer(), nullable: false);
+        $b = schema_column('id', column_type_integer(), nullable: false);
+
+        self::assertTrue($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_default_differs() : void
+    {
+        $a = schema_column('name', column_type_text(), default: "'hello'");
+        $b = schema_column('name', column_type_text(), default: "'world'");
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_generation_expression_differs() : void
+    {
+        $a = schema_column('full_name', column_type_text(), isGenerated: true, generationExpression: 'first || last');
+        $b = schema_column('full_name', column_type_text(), isGenerated: true, generationExpression: "first || ' ' || last");
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_identity_differs() : void
+    {
+        $a = schema_column('id', column_type_integer(), nullable: false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS);
+        $b = schema_column('id', column_type_integer(), nullable: false, isIdentity: false);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_name_differs() : void
+    {
+        $a = schema_column('id', column_type_integer(), nullable: false);
+        $b = schema_column('user_id', column_type_integer(), nullable: false);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_nullable_differs() : void
+    {
+        $a = schema_column('name', column_type_text(), nullable: false);
+        $b = schema_column('name', column_type_text(), nullable: true);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_type_differs() : void
+    {
+        $a = schema_column('name', column_type_text(), nullable: false);
+        $b = schema_column('name', column_type_varchar(255), nullable: false);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_structure_ignores_ordinal_position() : void
+    {
+        $a = schema_column('id', column_type_integer(), nullable: false, ordinalPosition: 1);
+        $b = schema_column('id', column_type_integer(), nullable: false, ordinalPosition: 5);
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_default_differs() : void
+    {
+        $a = schema_column('name', column_type_text(), default: "'a'");
+        $b = schema_column('name', column_type_text(), default: "'b'");
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_nullable_differs() : void
+    {
+        $a = schema_column('name', column_type_text(), nullable: false);
+        $b = schema_column('name', column_type_text(), nullable: true);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_type_differs() : void
+    {
+        $a = schema_column('name', column_type_text(), nullable: false);
+        $b = schema_column('name', column_type_varchar(255), nullable: false);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_when_only_name_differs() : void
+    {
+        $a = schema_column('id', column_type_integer(), nullable: false);
+        $b = schema_column('user_id', column_type_integer(), nullable: false);
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/CheckConstraintTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/CheckConstraintTest.php
new file mode 100644
index 0000000000..3d04024f9b
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/CheckConstraintTest.php
@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Constraint;
+
+use function Flow\PostgreSql\DSL\schema_check;
+
+use PHPUnit\Framework\TestCase;
+
+final class CheckConstraintTest extends TestCase
+{
+    public function test_check_constraint_construction() : void
+    {
+        $check = schema_check('age > 0');
+
+        self::assertSame('age > 0', $check->expression);
+        self::assertNull($check->name);
+        self::assertFalse($check->noInherit);
+    }
+
+    public function test_check_constraint_no_inherit() : void
+    {
+        $check = schema_check('age > 0', noInherit: true);
+
+        self::assertTrue($check->noInherit);
+    }
+
+    public function test_check_constraint_with_name() : void
+    {
+        $check = schema_check('age > 0', 'chk_positive_age');
+
+        self::assertSame('chk_positive_age', $check->name);
+    }
+
+    public function test_is_equal_for_identical_constraints() : void
+    {
+        $a = schema_check('age > 0', 'chk_age', noInherit: true);
+        $b = schema_check('age > 0', 'chk_age', noInherit: true);
+
+        self::assertTrue($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_expression_differs() : void
+    {
+        $a = schema_check('age > 0', 'chk_age');
+        $b = schema_check('age >= 0', 'chk_age');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_name_differs() : void
+    {
+        $a = schema_check('age > 0', 'chk_a');
+        $b = schema_check('age > 0', 'chk_b');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_no_inherit_differs() : void
+    {
+        $a = schema_check('age > 0', 'chk_age', noInherit: true);
+        $b = schema_check('age > 0', 'chk_age', noInherit: false);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_expression_differs() : void
+    {
+        $a = schema_check('age > 0');
+        $b = schema_check('age >= 18');
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_no_inherit_differs() : void
+    {
+        $a = schema_check('age > 0', noInherit: true);
+        $b = schema_check('age > 0', noInherit: false);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_when_only_name_differs() : void
+    {
+        $a = schema_check('age > 0', 'chk_a', noInherit: true);
+        $b = schema_check('age > 0', 'chk_b', noInherit: true);
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/ExcludeConstraintTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/ExcludeConstraintTest.php
new file mode 100644
index 0000000000..e172b07dc3
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/ExcludeConstraintTest.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Constraint;
+
+use function Flow\PostgreSql\DSL\schema_exclude;
+
+use PHPUnit\Framework\TestCase;
+
+final class ExcludeConstraintTest extends TestCase
+{
+    public function test_exclude_constraint_construction() : void
+    {
+        $exclude = schema_exclude('USING gist (tsrange WITH &&)');
+
+        self::assertSame('USING gist (tsrange WITH &&)', $exclude->definition);
+        self::assertNull($exclude->name);
+    }
+
+    public function test_exclude_constraint_with_name() : void
+    {
+        $exclude = schema_exclude('USING gist (tsrange WITH &&)', 'excl_no_overlap');
+
+        self::assertSame('excl_no_overlap', $exclude->name);
+    }
+
+    public function test_is_equal_for_identical_constraints() : void
+    {
+        $a = schema_exclude('USING gist (tsrange WITH &&)', 'excl_overlap');
+        $b = schema_exclude('USING gist (tsrange WITH &&)', 'excl_overlap');
+
+        self::assertTrue($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_definition_differs() : void
+    {
+        $a = schema_exclude('USING gist (tsrange WITH &&)', 'excl_overlap');
+        $b = schema_exclude('USING gist (daterange WITH &&)', 'excl_overlap');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_name_differs() : void
+    {
+        $a = schema_exclude('USING gist (tsrange WITH &&)', 'excl_a');
+        $b = schema_exclude('USING gist (tsrange WITH &&)', 'excl_b');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_definition_differs() : void
+    {
+        $a = schema_exclude('USING gist (tsrange WITH &&)');
+        $b = schema_exclude('USING gist (daterange WITH &&)');
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_when_only_name_differs() : void
+    {
+        $a = schema_exclude('USING gist (tsrange WITH &&)', 'excl_a');
+        $b = schema_exclude('USING gist (tsrange WITH &&)', 'excl_b');
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/ForeignKeyTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/ForeignKeyTest.php
new file mode 100644
index 0000000000..ab57aa55e4
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/ForeignKeyTest.php
@@ -0,0 +1,120 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Constraint;
+
+use function Flow\PostgreSql\DSL\schema_foreign_key;
+use Flow\PostgreSql\QueryBuilder\Schema\ReferentialAction;
+
+use PHPUnit\Framework\TestCase;
+
+final class ForeignKeyTest extends TestCase
+{
+    public function test_foreign_key_construction() : void
+    {
+        $fk = schema_foreign_key(['user_id'], 'users', ['id']);
+
+        self::assertSame(['user_id'], $fk->columns);
+        self::assertSame('users', $fk->referenceTable);
+        self::assertSame(['id'], $fk->referenceColumns);
+        self::assertSame('public', $fk->referenceSchema);
+        self::assertNull($fk->name);
+    }
+
+    public function test_foreign_key_deferrable() : void
+    {
+        $fk = schema_foreign_key(['user_id'], 'users', ['id'], deferrable: true, initiallyDeferred: true);
+
+        self::assertTrue($fk->deferrable);
+        self::assertTrue($fk->initiallyDeferred);
+    }
+
+    public function test_foreign_key_with_actions() : void
+    {
+        $fk = schema_foreign_key(['user_id'], 'users', ['id'], onDelete: ReferentialAction::CASCADE, onUpdate: ReferentialAction::CASCADE);
+
+        self::assertSame(ReferentialAction::CASCADE, $fk->onDelete);
+        self::assertSame(ReferentialAction::CASCADE, $fk->onUpdate);
+    }
+
+    public function test_is_equal_for_identical_foreign_keys() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_orders_user', onDelete: ReferentialAction::CASCADE);
+        $b = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_orders_user', onDelete: ReferentialAction::CASCADE);
+
+        self::assertTrue($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_columns_differ() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_orders');
+        $b = schema_foreign_key(['account_id'], 'users', ['id'], name: 'fk_orders');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_name_differs() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_a');
+        $b = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_b');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_on_delete_differs() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_orders', onDelete: ReferentialAction::CASCADE);
+        $b = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_orders', onDelete: ReferentialAction::RESTRICT);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_reference_table_differs() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_orders');
+        $b = schema_foreign_key(['user_id'], 'accounts', ['id'], name: 'fk_orders');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_deferrable_differs() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id'], deferrable: true);
+        $b = schema_foreign_key(['user_id'], 'users', ['id'], deferrable: false);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_initially_deferred_differs() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id'], deferrable: true, initiallyDeferred: true);
+        $b = schema_foreign_key(['user_id'], 'users', ['id'], deferrable: true, initiallyDeferred: false);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_reference_columns_differ() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id']);
+        $b = schema_foreign_key(['user_id'], 'users', ['uuid']);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_reference_schema_differs() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id'], referenceSchema: 'public');
+        $b = schema_foreign_key(['user_id'], 'users', ['id'], referenceSchema: 'other');
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_when_only_name_differs() : void
+    {
+        $a = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_a', onDelete: ReferentialAction::CASCADE, deferrable: true);
+        $b = schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_b', onDelete: ReferentialAction::CASCADE, deferrable: true);
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/PrimaryKeyTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/PrimaryKeyTest.php
new file mode 100644
index 0000000000..781c490b84
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/PrimaryKeyTest.php
@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Constraint;
+
+use function Flow\PostgreSql\DSL\schema_primary_key;
+
+use PHPUnit\Framework\TestCase;
+
+final class PrimaryKeyTest extends TestCase
+{
+    public function test_is_equal_for_identical_primary_keys() : void
+    {
+        $a = schema_primary_key(['id'], 'pk_users');
+        $b = schema_primary_key(['id'], 'pk_users');
+
+        self::assertTrue($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_columns_differ() : void
+    {
+        $a = schema_primary_key(['id'], 'pk_users');
+        $b = schema_primary_key(['id', 'tenant_id'], 'pk_users');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_name_differs() : void
+    {
+        $a = schema_primary_key(['id'], 'pk_a');
+        $b = schema_primary_key(['id'], 'pk_b');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_columns_differ() : void
+    {
+        $a = schema_primary_key(['id']);
+        $b = schema_primary_key(['user_id']);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_for_columns_in_different_order() : void
+    {
+        $a = schema_primary_key(['id', 'tenant_id'], 'pk_users');
+        $b = schema_primary_key(['tenant_id', 'id'], 'pk_users');
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_when_only_name_differs() : void
+    {
+        $a = schema_primary_key(['id', 'tenant_id'], 'pk_a');
+        $b = schema_primary_key(['id', 'tenant_id'], 'pk_b');
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+
+    public function test_primary_key_construction() : void
+    {
+        $pk = schema_primary_key(['id']);
+
+        self::assertSame(['id'], $pk->columns);
+        self::assertNull($pk->name);
+    }
+
+    public function test_primary_key_with_name() : void
+    {
+        $pk = schema_primary_key(['id', 'tenant_id'], 'pk_users');
+
+        self::assertSame(['id', 'tenant_id'], $pk->columns);
+        self::assertSame('pk_users', $pk->name);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/UniqueConstraintTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/UniqueConstraintTest.php
new file mode 100644
index 0000000000..a5f95280b8
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Constraint/UniqueConstraintTest.php
@@ -0,0 +1,100 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Constraint;
+
+use function Flow\PostgreSql\DSL\schema_unique;
+
+use PHPUnit\Framework\TestCase;
+
+final class UniqueConstraintTest extends TestCase
+{
+    public function test_is_equal_for_identical_constraints() : void
+    {
+        $a = schema_unique(['email'], 'uq_email', nullsNotDistinct: true);
+        $b = schema_unique(['email'], 'uq_email', nullsNotDistinct: true);
+
+        self::assertTrue($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_columns_differ() : void
+    {
+        $a = schema_unique(['email'], 'uq_users');
+        $b = schema_unique(['username'], 'uq_users');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_name_differs() : void
+    {
+        $a = schema_unique(['email'], 'uq_a');
+        $b = schema_unique(['email'], 'uq_b');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_nulls_not_distinct_differs() : void
+    {
+        $a = schema_unique(['email'], 'uq_email', nullsNotDistinct: true);
+        $b = schema_unique(['email'], 'uq_email', nullsNotDistinct: false);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_columns_differ() : void
+    {
+        $a = schema_unique(['email']);
+        $b = schema_unique(['username']);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_nulls_not_distinct_differs() : void
+    {
+        $a = schema_unique(['email'], nullsNotDistinct: true);
+        $b = schema_unique(['email'], nullsNotDistinct: false);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_for_columns_in_different_order() : void
+    {
+        $a = schema_unique(['email', 'tenant_id'], 'uq_users');
+        $b = schema_unique(['tenant_id', 'email'], 'uq_users');
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_when_only_name_differs() : void
+    {
+        $a = schema_unique(['email', 'tenant_id'], 'uq_a', nullsNotDistinct: true);
+        $b = schema_unique(['email', 'tenant_id'], 'uq_b', nullsNotDistinct: true);
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+
+    public function test_unique_constraint_construction() : void
+    {
+        $unique = schema_unique(['email']);
+
+        self::assertSame(['email'], $unique->columns);
+        self::assertNull($unique->name);
+        self::assertFalse($unique->nullsNotDistinct);
+    }
+
+    public function test_unique_constraint_nulls_not_distinct() : void
+    {
+        $unique = schema_unique(['email'], nullsNotDistinct: true);
+
+        self::assertTrue($unique->nullsNotDistinct);
+    }
+
+    public function test_unique_constraint_with_name() : void
+    {
+        $unique = schema_unique(['email', 'tenant_id'], 'uq_users_email_tenant');
+
+        self::assertSame(['email', 'tenant_id'], $unique->columns);
+        self::assertSame('uq_users_email_tenant', $unique->name);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/CatalogComparatorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/CatalogComparatorTest.php
new file mode 100644
index 0000000000..aceed0341b
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/CatalogComparatorTest.php
@@ -0,0 +1,2233 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{and_, catalog_comparator, col, eq, literal, schema, schema_check, schema_column_bigint, schema_column_integer, schema_column_text, schema_column_uuid, schema_domain, schema_exclude, schema_extension, schema_foreign_key, schema_function, schema_index, schema_materialized_view, schema_primary_key, schema_procedure, schema_sequence, schema_table, schema_unique, schema_view, select, star, table};
+
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnType, ReferentialAction};
+use Flow\PostgreSql\Schema\{Catalog, FunctionVolatility, Trigger, TriggerEvent, TriggerTiming};
+use Flow\PostgreSql\Schema\Diff\StrictRenameStrategy;
+use PHPUnit\Framework\TestCase;
+
+final class CatalogComparatorTest extends TestCase
+{
+    public function test_added_column_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('email'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedColumns);
+        self::assertSame('email', $tableDiff->addedColumns[0]->name);
+    }
+
+    public function test_added_index_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+                    schema_index('idx_email', ['email']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedIndexes);
+        self::assertSame('idx_email', $tableDiff->addedIndexes[0]->name);
+    }
+
+    public function test_added_schema_detected() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([schema('public'), schema('audit')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->addedSchemas);
+        self::assertSame('audit', $diff->addedSchemas[0]->name);
+        self::assertCount(0, $diff->removedSchemas);
+    }
+
+    public function test_added_table_detected() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas);
+        self::assertCount(1, $diff->modifiedSchemas[0]->addedTables);
+        self::assertSame('users', $diff->modifiedSchemas[0]->addedTables[0]->name);
+    }
+
+    public function test_ambiguous_column_rename_resolved_by_similarity() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('first_name'),
+                    schema_column_text('last_name'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('full_name'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(0, $tableDiff->addedColumns);
+        self::assertCount(1, $tableDiff->removedColumns);
+        self::assertSame('first_name', $tableDiff->removedColumns[0]->name);
+        self::assertCount(1, $tableDiff->modifiedColumns);
+        self::assertTrue($tableDiff->modifiedColumns[0]->hasNameChanged());
+        self::assertSame('last_name', $tableDiff->modifiedColumns[0]->source->name);
+        self::assertSame('full_name', $tableDiff->modifiedColumns[0]->target->name);
+    }
+
+    public function test_ambiguous_index_rename_resolved_by_similarity() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+                    schema_index('idx_email_a', ['email']),
+                    schema_index('idx_email_b', ['email']),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+                    schema_index('idx_email_c', ['email']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(0, $tableDiff->addedIndexes);
+        self::assertCount(1, $tableDiff->removedIndexes);
+        self::assertCount(1, $tableDiff->renamedIndexes);
+    }
+
+    public function test_both_empty_catalogs_produce_empty_diff() : void
+    {
+        $source = new Catalog([]);
+        $target = new Catalog([]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_both_empty_schemas_produce_empty_diff() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_check_constraint_added() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('age')]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('age')], checkConstraints: [
+                    schema_check('age > 0', 'chk_age_positive'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedCheckConstraints);
+        self::assertSame('age > 0', $tableDiff->addedCheckConstraints[0]->expression);
+    }
+
+    public function test_check_constraint_modified_treated_as_drop_and_add() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('age')], checkConstraints: [
+                    schema_check('age > 0', 'chk_age'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('age')], checkConstraints: [
+                    schema_check('age > 18', 'chk_age'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedCheckConstraints);
+        self::assertSame('age > 18', $tableDiff->addedCheckConstraints[0]->expression);
+        self::assertCount(1, $tableDiff->removedCheckConstraints);
+        self::assertSame('age > 0', $tableDiff->removedCheckConstraints[0]->expression);
+    }
+
+    public function test_check_constraint_no_inherit_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('age')], checkConstraints: [
+                    schema_check('age > 0', 'chk_age', false),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('age')], checkConstraints: [
+                    schema_check('age > 0', 'chk_age', true),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedCheckConstraints);
+        self::assertCount(1, $tableDiff->removedCheckConstraints);
+    }
+
+    public function test_check_constraint_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('age')], checkConstraints: [
+                    schema_check('age > 0', 'chk_age_positive'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('age')]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->removedCheckConstraints);
+        self::assertSame('age > 0', $tableDiff->removedCheckConstraints[0]->expression);
+    }
+
+    public function test_check_constraint_without_name_uses_expression_for_matching() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('age')], checkConstraints: [
+                    schema_check('age > 0'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_column_add_and_remove_not_confused_as_rename() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('foo'),
+                    schema_column_text('bar'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('xyz_completely_different_one'),
+                    schema_column_text('xyz_completely_different_two'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(2, $tableDiff->addedColumns);
+        self::assertCount(2, $tableDiff->removedColumns);
+        self::assertCount(0, $tableDiff->modifiedColumns);
+    }
+
+    public function test_column_rename_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('name'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('full_name'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(0, $tableDiff->addedColumns);
+        self::assertCount(0, $tableDiff->removedColumns);
+        self::assertCount(1, $tableDiff->modifiedColumns);
+        self::assertTrue($tableDiff->modifiedColumns[0]->hasNameChanged());
+        self::assertSame('name', $tableDiff->modifiedColumns[0]->source->name);
+        self::assertSame('full_name', $tableDiff->modifiedColumns[0]->target->name);
+    }
+
+    public function test_column_rename_detected_with_ambiguous_candidates() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_bigint('net_commission_cents'),
+                    schema_column_bigint('retail_agency_commission_cents'),
+                    schema_column_bigint('total_commission_cents'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_bigint('net_commission'),
+                    schema_column_bigint('retail_agency_commission'),
+                    schema_column_bigint('total_commission'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(0, $tableDiff->addedColumns);
+        self::assertCount(0, $tableDiff->removedColumns);
+        self::assertCount(3, $tableDiff->modifiedColumns);
+
+        $renames = [];
+
+        foreach ($tableDiff->modifiedColumns as $col) {
+            self::assertTrue($col->hasNameChanged());
+            $renames[$col->source->name] = $col->target->name;
+        }
+
+        \ksort($renames);
+        self::assertSame([
+            'net_commission_cents' => 'net_commission',
+            'retail_agency_commission_cents' => 'retail_agency_commission',
+            'total_commission_cents' => 'total_commission',
+        ], $renames);
+    }
+
+    public function test_column_rename_not_detected_when_type_changes() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('name'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('full_name'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedColumns);
+        self::assertSame('full_name', $tableDiff->addedColumns[0]->name);
+        self::assertCount(1, $tableDiff->removedColumns);
+        self::assertSame('name', $tableDiff->removedColumns[0]->name);
+        self::assertCount(0, $tableDiff->modifiedColumns);
+    }
+
+    public function test_column_rename_with_mixed_types() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_bigint('amount_cents'),
+                    schema_column_bigint('total_cents'),
+                    schema_column_text('description_old'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_bigint('amount'),
+                    schema_column_bigint('total'),
+                    schema_column_text('description'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(0, $tableDiff->addedColumns);
+        self::assertCount(0, $tableDiff->removedColumns);
+        self::assertCount(3, $tableDiff->modifiedColumns);
+
+        $renames = [];
+
+        foreach ($tableDiff->modifiedColumns as $col) {
+            self::assertTrue($col->hasNameChanged());
+            $renames[$col->source->name] = $col->target->name;
+        }
+
+        \ksort($renames);
+        self::assertSame([
+            'amount_cents' => 'amount',
+            'description_old' => 'description',
+            'total_cents' => 'total',
+        ], $renames);
+    }
+
+    public function test_column_rename_with_strict_rename_strategy() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_bigint('net_commission_cents'),
+                    schema_column_bigint('retail_agency_commission_cents'),
+                    schema_column_bigint('total_commission_cents'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_bigint('net_commission'),
+                    schema_column_bigint('retail_agency_commission'),
+                    schema_column_bigint('total_commission'),
+                ]),
+            ]),
+        ]);
+
+        $diff = catalog_comparator(new StrictRenameStrategy())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(3, $tableDiff->addedColumns);
+        self::assertCount(3, $tableDiff->removedColumns);
+        self::assertCount(0, $tableDiff->modifiedColumns);
+    }
+
+    public function test_domain_added() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([
+            schema('public', domains: [
+                schema_domain('email', ColumnType::text()),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->addedDomains);
+        self::assertSame('email', $diff->modifiedSchemas[0]->addedDomains[0]->name);
+    }
+
+    public function test_domain_base_type_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', domains: [
+                schema_domain('positive_int', ColumnType::integer()),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', domains: [
+                schema_domain('positive_int', ColumnType::bigint()),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedDomains);
+        self::assertTrue($diff->modifiedSchemas[0]->modifiedDomains[0]->hasBaseTypeChanged());
+    }
+
+    public function test_domain_check_constraint_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', domains: [
+                schema_domain('email', ColumnType::text(), checkConstraints: [
+                    schema_check('VALUE ~ \'@\'', 'chk_email'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', domains: [
+                schema_domain('email', ColumnType::text(), checkConstraints: [
+                    schema_check('VALUE ~ \'@.+\\.\'', 'chk_email'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedDomains);
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedDomains[0]->addedCheckConstraints);
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedDomains[0]->removedCheckConstraints);
+    }
+
+    public function test_domain_default_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', domains: [
+                schema_domain('email', ColumnType::text(), default: 'old'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', domains: [
+                schema_domain('email', ColumnType::text(), default: 'new'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedDomains);
+        self::assertTrue($diff->modifiedSchemas[0]->modifiedDomains[0]->hasDefaultChanged());
+    }
+
+    public function test_domain_no_change_when_identical() : void
+    {
+        $source = new Catalog([
+            schema('public', domains: [
+                schema_domain('email', ColumnType::text(), nullable: false, default: 'x', checkConstraints: [
+                    schema_check('VALUE ~ \'@\'', 'chk_email'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_domain_nullable_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', domains: [
+                schema_domain('email', ColumnType::text(), nullable: true),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', domains: [
+                schema_domain('email', ColumnType::text(), nullable: false),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedDomains);
+        self::assertTrue($diff->modifiedSchemas[0]->modifiedDomains[0]->hasNullableChanged());
+    }
+
+    public function test_domain_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', domains: [
+                schema_domain('email', ColumnType::text()),
+            ]),
+        ]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->removedDomains);
+    }
+
+    public function test_exclude_constraint_added() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('events', [
+                    schema_column_integer('id', false),
+                    schema_column_text('room'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('events', [
+                    schema_column_integer('id', false),
+                    schema_column_text('room'),
+                ], excludeConstraints: [
+                    schema_exclude('USING gist (room WITH =)', 'excl_room'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedExcludeConstraints);
+        self::assertSame('USING gist (room WITH =)', $tableDiff->addedExcludeConstraints[0]->definition);
+    }
+
+    public function test_exclude_constraint_modified_treated_as_drop_and_add() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('events', [
+                    schema_column_integer('id', false),
+                    schema_column_text('room'),
+                ], excludeConstraints: [
+                    schema_exclude('USING gist (room WITH =)', 'excl_room'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('events', [
+                    schema_column_integer('id', false),
+                    schema_column_text('room'),
+                ], excludeConstraints: [
+                    schema_exclude('USING gist (room WITH &&)', 'excl_room'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedExcludeConstraints);
+        self::assertCount(1, $tableDiff->removedExcludeConstraints);
+    }
+
+    public function test_exclude_constraint_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('events', [
+                    schema_column_integer('id', false),
+                    schema_column_text('room'),
+                ], excludeConstraints: [
+                    schema_exclude('USING gist (room WITH =)', 'excl_room'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('events', [
+                    schema_column_integer('id', false),
+                    schema_column_text('room'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->removedExcludeConstraints);
+    }
+
+    public function test_exclude_constraint_without_name_uses_definition_for_matching() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('events', [
+                    schema_column_integer('id', false),
+                    schema_column_text('room'),
+                ], excludeConstraints: [
+                    schema_exclude('USING gist (room WITH =)'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_extension_added() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([
+            schema('public', extensions: [
+                schema_extension('uuid-ossp', '1.0'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->addedExtensions);
+        self::assertSame('uuid-ossp', $diff->modifiedSchemas[0]->addedExtensions[0]->name);
+    }
+
+    public function test_extension_no_change_when_identical() : void
+    {
+        $source = new Catalog([
+            schema('public', extensions: [
+                schema_extension('uuid-ossp', '1.0'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_extension_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', extensions: [
+                schema_extension('uuid-ossp', '1.0'),
+            ]),
+        ]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->removedExtensions);
+    }
+
+    public function test_extension_version_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', extensions: [
+                schema_extension('uuid-ossp', '1.0'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', extensions: [
+                schema_extension('uuid-ossp', '1.1'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedExtensions);
+        self::assertTrue($diff->modifiedSchemas[0]->modifiedExtensions[0]->hasVersionChanged());
+    }
+
+    public function test_foreign_key_added() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedForeignKeys);
+        self::assertSame(['user_id'], $tableDiff->addedForeignKeys[0]->columns);
+    }
+
+    public function test_foreign_key_modified_columns_change() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['uuid'], name: 'fk_user'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedForeignKeys);
+        self::assertCount(1, $tableDiff->removedForeignKeys);
+    }
+
+    public function test_foreign_key_modified_deferrable_change() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', deferrable: false),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', deferrable: true),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedForeignKeys);
+        self::assertCount(1, $tableDiff->removedForeignKeys);
+    }
+
+    public function test_foreign_key_modified_initially_deferred_change() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', deferrable: true, initiallyDeferred: false),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', deferrable: true, initiallyDeferred: true),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedForeignKeys);
+        self::assertCount(1, $tableDiff->removedForeignKeys);
+    }
+
+    public function test_foreign_key_modified_on_delete_action_change() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', onDelete: ReferentialAction::NO_ACTION),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', onDelete: ReferentialAction::CASCADE),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedForeignKeys);
+        self::assertCount(1, $tableDiff->removedForeignKeys);
+    }
+
+    public function test_foreign_key_modified_on_update_action_change() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', onUpdate: ReferentialAction::NO_ACTION),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', onUpdate: ReferentialAction::CASCADE),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedForeignKeys);
+        self::assertCount(1, $tableDiff->removedForeignKeys);
+    }
+
+    public function test_foreign_key_modified_reference_schema_change() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', referenceSchema: 'public'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user', referenceSchema: 'auth'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedForeignKeys);
+        self::assertCount(1, $tableDiff->removedForeignKeys);
+    }
+
+    public function test_foreign_key_modified_reference_table_change() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id'], name: 'fk_user'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'accounts', ['id'], name: 'fk_user'),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedForeignKeys);
+        self::assertCount(1, $tableDiff->removedForeignKeys);
+    }
+
+    public function test_foreign_key_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id']),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->removedForeignKeys);
+    }
+
+    public function test_foreign_key_without_name_uses_identity_for_matching() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('orders', [
+                    schema_column_integer('id', false),
+                    schema_column_integer('user_id', false),
+                ], foreignKeys: [
+                    schema_foreign_key(['user_id'], 'users', ['id']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_function_added() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], 'sql', select(col('name'))->from(table('users'))->where(eq(col('id'), literal(1)))->toSql()),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->addedFunctions);
+        self::assertSame('get_user', $diff->modifiedSchemas[0]->addedFunctions[0]->name);
+    }
+
+    public function test_function_modified_argument_types_change() : void
+    {
+        $source = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer']),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['text']),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedFunctions);
+    }
+
+    public function test_function_modified_definition_change() : void
+    {
+        $source = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], definition: select(literal(1))->toSql()),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], definition: select(literal(2))->toSql()),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedFunctions);
+    }
+
+    public function test_function_modified_language_change() : void
+    {
+        $source = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], 'sql'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], 'plpgsql'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedFunctions);
+    }
+
+    public function test_function_modified_return_type_change() : void
+    {
+        $source = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer']),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'integer', ['integer']),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedFunctions);
+    }
+
+    public function test_function_modified_strict_change() : void
+    {
+        $source = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], isStrict: false),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], isStrict: true),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedFunctions);
+    }
+
+    public function test_function_modified_volatility_change() : void
+    {
+        $source = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], volatility: FunctionVolatility::VOLATILE),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], volatility: FunctionVolatility::IMMUTABLE),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedFunctions);
+    }
+
+    public function test_function_no_change_when_identical() : void
+    {
+        $source = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer'], 'sql', select(literal(1))->toSql(), true, FunctionVolatility::STABLE),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_function_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', functions: [
+                schema_function('get_user', 'text', ['integer']),
+            ]),
+        ]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->removedFunctions);
+    }
+
+    public function test_identical_catalogs_produce_empty_diff() : void
+    {
+        $catalog = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('name'),
+                ], primaryKey: schema_primary_key(['id'])),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($catalog, $catalog);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_identical_table_not_in_modified_tables() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('name'),
+                ], primaryKey: schema_primary_key(['id']), indexes: [
+                    schema_index('idx_name', ['name']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+        self::assertCount(0, $diff->modifiedSchemas);
+    }
+
+    public function test_index_rename_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+                    schema_index('idx_email_old', ['email']),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+                    schema_index('idx_email_new', ['email']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(0, $tableDiff->addedIndexes);
+        self::assertCount(0, $tableDiff->removedIndexes);
+        self::assertCount(1, $tableDiff->renamedIndexes);
+        self::assertArrayHasKey('idx_email_old', $tableDiff->renamedIndexes);
+        self::assertSame('idx_email_new', $tableDiff->renamedIndexes['idx_email_old']->name);
+    }
+
+    public function test_index_with_same_name_but_different_structure() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email'), schema_column_text('name')], indexes: [
+                    schema_index('idx_users', ['email']),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email'), schema_column_text('name')], indexes: [
+                    schema_index('idx_users', ['name']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedIndexes);
+        self::assertSame('idx_users', $tableDiff->addedIndexes[0]->name);
+        self::assertCount(1, $tableDiff->removedIndexes);
+        self::assertSame('idx_users', $tableDiff->removedIndexes[0]->name);
+    }
+
+    public function test_materialized_view_added() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([
+            schema('public', materializedViews: [
+                schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->addedMaterializedViews);
+        self::assertSame('mv_users', $diff->modifiedSchemas[0]->addedMaterializedViews[0]->name);
+    }
+
+    public function test_materialized_view_definition_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', materializedViews: [
+                schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', materializedViews: [
+                schema_materialized_view('mv_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedMaterializedViews);
+        self::assertTrue($diff->modifiedSchemas[0]->modifiedMaterializedViews[0]->hasDefinitionChanged());
+    }
+
+    public function test_materialized_view_index_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', materializedViews: [
+                schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', materializedViews: [
+                schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql(), indexes: [
+                    schema_index('idx_mv_users', ['id']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedMaterializedViews);
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedMaterializedViews[0]->addedIndexes);
+    }
+
+    public function test_materialized_view_no_change_when_identical() : void
+    {
+        $source = new Catalog([
+            schema('public', materializedViews: [
+                schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_materialized_view_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', materializedViews: [
+                schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+            ]),
+        ]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->removedMaterializedViews);
+    }
+
+    public function test_modified_column_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('name'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('name', false),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->modifiedColumns);
+        self::assertSame('name', $tableDiff->modifiedColumns[0]->source->name);
+        self::assertTrue($tableDiff->modifiedColumns[0]->hasNullableChanged());
+        self::assertFalse($tableDiff->modifiedColumns[0]->hasNameChanged());
+    }
+
+    public function test_primary_key_added() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], primaryKey: schema_primary_key(['id'])),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertNotNull($tableDiff->addedPrimaryKey);
+        self::assertNull($tableDiff->removedPrimaryKey);
+        self::assertSame(['id'], $tableDiff->addedPrimaryKey->columns);
+    }
+
+    public function test_primary_key_changed() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_uuid('uuid', false),
+                ], primaryKey: schema_primary_key(['id'])),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_uuid('uuid', false),
+                ], primaryKey: schema_primary_key(['uuid'])),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertNotNull($tableDiff->addedPrimaryKey);
+        self::assertNotNull($tableDiff->removedPrimaryKey);
+        self::assertSame(['uuid'], $tableDiff->addedPrimaryKey->columns);
+        self::assertSame(['id'], $tableDiff->removedPrimaryKey->columns);
+    }
+
+    public function test_primary_key_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], primaryKey: schema_primary_key(['id'])),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertNull($tableDiff->addedPrimaryKey);
+        self::assertNotNull($tableDiff->removedPrimaryKey);
+    }
+
+    public function test_procedure_added() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([
+            schema('public', procedures: [
+                schema_procedure('cleanup', ['integer'], 'sql', 'DELETE FROM logs WHERE id = $1'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->addedProcedures);
+        self::assertSame('cleanup', $diff->modifiedSchemas[0]->addedProcedures[0]->name);
+    }
+
+    public function test_procedure_modified_argument_types_change() : void
+    {
+        $source = new Catalog([
+            schema('public', procedures: [
+                schema_procedure('cleanup', ['integer']),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', procedures: [
+                schema_procedure('cleanup', ['text']),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedProcedures);
+    }
+
+    public function test_procedure_modified_definition_change() : void
+    {
+        $source = new Catalog([
+            schema('public', procedures: [
+                schema_procedure('cleanup', ['integer'], definition: 'DELETE FROM logs WHERE id = $1'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', procedures: [
+                schema_procedure('cleanup', ['integer'], definition: 'DELETE FROM logs'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedProcedures);
+    }
+
+    public function test_procedure_modified_language_change() : void
+    {
+        $source = new Catalog([
+            schema('public', procedures: [
+                schema_procedure('cleanup', ['integer'], 'sql'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', procedures: [
+                schema_procedure('cleanup', ['integer'], 'plpgsql'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedProcedures);
+    }
+
+    public function test_procedure_no_change_when_identical() : void
+    {
+        $source = new Catalog([
+            schema('public', procedures: [
+                schema_procedure('cleanup', ['integer'], 'sql', 'DELETE FROM logs'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_procedure_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', procedures: [
+                schema_procedure('cleanup', ['integer']),
+            ]),
+        ]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->removedProcedures);
+    }
+
+    public function test_removed_column_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [
+                    schema_column_integer('id', false),
+                    schema_column_text('email'),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->removedColumns);
+        self::assertSame('email', $tableDiff->removedColumns[0]->name);
+    }
+
+    public function test_removed_index_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+                    schema_index('idx_email', ['email']),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->removedIndexes);
+        self::assertSame('idx_email', $tableDiff->removedIndexes[0]->name);
+    }
+
+    public function test_removed_schema_detected() : void
+    {
+        $source = new Catalog([schema('public'), schema('audit')]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(0, $diff->addedSchemas);
+        self::assertCount(1, $diff->removedSchemas);
+        self::assertSame('audit', $diff->removedSchemas[0]->name);
+    }
+
+    public function test_removed_table_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas);
+        self::assertCount(1, $diff->modifiedSchemas[0]->removedTables);
+        self::assertSame('users', $diff->modifiedSchemas[0]->removedTables[0]->name);
+    }
+
+    public function test_reverse_comparison_produces_inverse_diff() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+                schema_table('orders', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+
+        $comparator = catalog_comparator();
+
+        $upDiff = $comparator->compare($source, $target);
+        $downDiff = $comparator->compare($target, $source);
+
+        self::assertCount(1, $upDiff->modifiedSchemas[0]->addedTables);
+        self::assertSame('orders', $upDiff->modifiedSchemas[0]->addedTables[0]->name);
+        self::assertCount(0, $upDiff->modifiedSchemas[0]->removedTables);
+
+        self::assertCount(0, $downDiff->modifiedSchemas[0]->addedTables);
+        self::assertCount(1, $downDiff->modifiedSchemas[0]->removedTables);
+        self::assertSame('orders', $downDiff->modifiedSchemas[0]->removedTables[0]->name);
+    }
+
+    public function test_sequence_added() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('users_id_seq'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->addedSequences);
+        self::assertSame('users_id_seq', $diff->modifiedSchemas[0]->addedSequences[0]->name);
+    }
+
+    public function test_sequence_cache_value_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', cacheValue: 1),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', cacheValue: 10),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedSequences);
+    }
+
+    public function test_sequence_column_type_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', dataType: 'bigint'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', dataType: 'integer'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedSequences);
+    }
+
+    public function test_sequence_cycle_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', cycle: false),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', cycle: true),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedSequences);
+    }
+
+    public function test_sequence_max_value_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', maxValue: 9999),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedSequences);
+    }
+
+    public function test_sequence_min_value_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', minValue: 1),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', minValue: 0),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedSequences);
+    }
+
+    public function test_sequence_modification_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('users_id_seq'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('users_id_seq', incrementBy: 10),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas);
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedSequences);
+        self::assertSame('users_id_seq', $diff->modifiedSchemas[0]->modifiedSequences[0]->source->name);
+    }
+
+    public function test_sequence_no_change_when_identical() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', 'bigint', 1, 1, null, 1, false, 1, 'users', 'id'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_sequence_owned_by_column_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', ownedByColumn: 'id'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', ownedByColumn: 'user_id'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedSequences);
+    }
+
+    public function test_sequence_owned_by_table_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', ownedByTable: 'users'),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', ownedByTable: 'accounts'),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedSequences);
+    }
+
+    public function test_sequence_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('users_id_seq'),
+            ]),
+        ]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->removedSequences);
+    }
+
+    public function test_sequence_start_value_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', startValue: 1),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', sequences: [
+                schema_sequence('s1', startValue: 100),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedSequences);
+    }
+
+    public function test_trigger_added() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+
+        $trigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$trigger]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedTriggers);
+        self::assertSame('trg_audit', $tableDiff->addedTriggers[0]->name);
+    }
+
+    public function test_trigger_modified_events_change_treated_as_drop_and_add() : void
+    {
+        $sourceTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+        $targetTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT, TriggerEvent::UPDATE], 'audit_fn');
+
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$sourceTrigger]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$targetTrigger]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedTriggers);
+        self::assertCount(1, $tableDiff->removedTriggers);
+    }
+
+    public function test_trigger_modified_for_each_row_change_treated_as_drop_and_add() : void
+    {
+        $sourceTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: false);
+        $targetTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: true);
+
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$sourceTrigger]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$targetTrigger]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedTriggers);
+        self::assertCount(1, $tableDiff->removedTriggers);
+    }
+
+    public function test_trigger_modified_function_name_change_treated_as_drop_and_add() : void
+    {
+        $sourceTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+        $targetTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'new_audit_fn');
+
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$sourceTrigger]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$targetTrigger]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedTriggers);
+        self::assertCount(1, $tableDiff->removedTriggers);
+    }
+
+    public function test_trigger_modified_table_name_change_treated_as_drop_and_add() : void
+    {
+        $sourceTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+        $targetTrigger = new Trigger('trg_audit', 'accounts', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$sourceTrigger]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$targetTrigger]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedTriggers);
+        self::assertCount(1, $tableDiff->removedTriggers);
+    }
+
+    public function test_trigger_modified_timing_change_treated_as_drop_and_add() : void
+    {
+        $sourceTrigger = new Trigger('trg_audit', 'users', TriggerTiming::BEFORE, [TriggerEvent::INSERT], 'audit_fn');
+        $targetTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$sourceTrigger]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$targetTrigger]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedTriggers);
+        self::assertCount(1, $tableDiff->removedTriggers);
+    }
+
+    public function test_trigger_modified_when_condition_change_treated_as_drop_and_add() : void
+    {
+        $sourceTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', whenCondition: 'OLD.* IS DISTINCT FROM NEW.*');
+        $targetTrigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', whenCondition: 'NEW.active = true');
+
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$sourceTrigger]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$targetTrigger]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedTriggers);
+        self::assertCount(1, $tableDiff->removedTriggers);
+    }
+
+    public function test_trigger_no_change_when_identical() : void
+    {
+        $trigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', true, 'NEW.active = true');
+
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$trigger]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_trigger_removed() : void
+    {
+        $trigger = new Trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)], triggers: [$trigger]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false)]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->removedTriggers);
+        self::assertSame('trg_audit', $tableDiff->removedTriggers[0]->name);
+    }
+
+    public function test_unique_constraint_added() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], uniqueConstraints: [
+                    schema_unique(['email']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedUniqueConstraints);
+    }
+
+    public function test_unique_constraint_modified_nulls_not_distinct_change() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], uniqueConstraints: [
+                    schema_unique(['email'], 'uq_email', false),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], uniqueConstraints: [
+                    schema_unique(['email'], 'uq_email', true),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->addedUniqueConstraints);
+        self::assertCount(1, $tableDiff->removedUniqueConstraints);
+    }
+
+    public function test_unique_constraint_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], uniqueConstraints: [
+                    schema_unique(['email']),
+                ]),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        $tableDiff = $diff->modifiedSchemas[0]->modifiedTables[0];
+        self::assertCount(1, $tableDiff->removedUniqueConstraints);
+    }
+
+    public function test_unique_constraint_without_name_uses_columns_for_matching() : void
+    {
+        $source = new Catalog([
+            schema('public', tables: [
+                schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], uniqueConstraints: [
+                    schema_unique(['email']),
+                ]),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_view_added() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([
+            schema('public', views: [
+                schema_view('active_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->addedViews);
+        self::assertSame('active_users', $diff->modifiedSchemas[0]->addedViews[0]->name);
+    }
+
+    public function test_view_is_updatable_change_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', views: [
+                schema_view('active_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql(), isUpdatable: false),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', views: [
+                schema_view('active_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql(), isUpdatable: true),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedViews);
+    }
+
+    public function test_view_modification_detected() : void
+    {
+        $source = new Catalog([
+            schema('public', views: [
+                schema_view('active_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()),
+            ]),
+        ]);
+        $target = new Catalog([
+            schema('public', views: [
+                schema_view('active_users', select(star())->from(table('users'))->where(and_(eq(col('active'), literal(true)), eq(col('verified'), literal(true))))->toSql()),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->modifiedViews);
+    }
+
+    public function test_view_no_change_when_identical() : void
+    {
+        $source = new Catalog([
+            schema('public', views: [
+                schema_view('active_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql(), true),
+            ]),
+        ]);
+
+        $diff = (catalog_comparator())->compare($source, $source);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_view_removed() : void
+    {
+        $source = new Catalog([
+            schema('public', views: [
+                schema_view('active_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()),
+            ]),
+        ]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = (catalog_comparator())->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSchemas[0]->removedViews);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/CatalogDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/CatalogDiffTest.php
new file mode 100644
index 0000000000..a1e8ea2b0a
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/CatalogDiffTest.php
@@ -0,0 +1,314 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{schema, schema_column_integer, schema_column_text, schema_sequence, schema_table};
+
+use Flow\PostgreSql\Schema\Catalog;
+use Flow\PostgreSql\Schema\Diff\{CatalogDiff, SchemaDiff};
+use PHPUnit\Framework\TestCase;
+
+final class CatalogDiffTest extends TestCase
+{
+    public function test_creates_added_schema() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([schema('public'), schema('audit')]);
+
+        $diff = new CatalogDiff($source, $target, addedSchemas: [schema('audit')]);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE SCHEMA IF NOT EXISTS audit', $sqls[0]->toSql());
+    }
+
+    public function test_creates_added_schema_with_objects() : void
+    {
+        $source = new Catalog([schema('public')]);
+
+        $auditSchema = schema(
+            'audit',
+            tables: [schema_table('events', [schema_column_integer('id', false), schema_column_text('name')], schema: 'audit')],
+            sequences: [schema_sequence('events_id_seq')],
+        );
+
+        $target = new Catalog([schema('public'), $auditSchema]);
+
+        $diff = new CatalogDiff($source, $target, addedSchemas: [$auditSchema]);
+
+        $sqls = $diff->generate();
+
+        self::assertGreaterThanOrEqual(3, \count($sqls));
+        self::assertSame('CREATE SCHEMA IF NOT EXISTS audit', $sqls[0]->toSql());
+        self::assertStringContainsString('CREATE SEQUENCE', $sqls[1]->toSql());
+        self::assertStringContainsString('events_id_seq', $sqls[1]->toSql());
+        self::assertStringContainsString('CREATE TABLE', $sqls[2]->toSql());
+        self::assertStringContainsString('events', $sqls[2]->toSql());
+    }
+
+    public function test_delegates_to_schema_diff() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([schema('public')]);
+
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $schemaDiff = new SchemaDiff(
+            schema('public'),
+            schema('public', tables: [$table]),
+            addedTables: [$table],
+        );
+
+        $diff = new CatalogDiff($source, $target, modifiedSchemas: [$schemaDiff]);
+
+        $sqls = $diff->generate();
+
+        self::assertNotEmpty($sqls);
+        self::assertStringContainsString('CREATE TABLE', $sqls[0]->toSql());
+        self::assertStringContainsString('users', $sqls[0]->toSql());
+    }
+
+    public function test_drops_removed_schema() : void
+    {
+        $source = new Catalog([schema('public'), schema('audit')]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = new CatalogDiff($source, $target, removedSchemas: [schema('audit')]);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP SCHEMA audit CASCADE', $sqls[0]->toSql());
+    }
+
+    public function test_empty_diff() : void
+    {
+        $catalog = new Catalog([schema('public')]);
+
+        $diff = new CatalogDiff($catalog, $catalog);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_handles_multiple_schemas() : void
+    {
+        $source = new Catalog([schema('public'), schema('old_schema')]);
+        $target = new Catalog([schema('public'), schema('new_schema')]);
+
+        $diff = new CatalogDiff(
+            $source,
+            $target,
+            addedSchemas: [schema('new_schema')],
+            removedSchemas: [schema('old_schema')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('CREATE SCHEMA IF NOT EXISTS new_schema', $sqls[0]->toSql());
+        self::assertSame('DROP SCHEMA old_schema CASCADE', $sqls[1]->toSql());
+    }
+
+    public function test_not_empty_when_schema_added() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([schema('public'), schema('audit')]);
+
+        $diff = new CatalogDiff($source, $target, addedSchemas: [schema('audit')]);
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_not_empty_when_schema_modified() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([schema('public')]);
+
+        $schemaDiff = new SchemaDiff(
+            schema('public'),
+            schema('public', tables: [schema_table('users', [schema_column_integer('id', false)])]),
+            addedTables: [schema_table('users', [schema_column_integer('id', false)])],
+        );
+
+        $diff = new CatalogDiff($source, $target, modifiedSchemas: [$schemaDiff]);
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_not_empty_when_schema_removed() : void
+    {
+        $source = new Catalog([schema('public'), schema('audit')]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = new CatalogDiff($source, $target, removedSchemas: [schema('audit')]);
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_ordering_added_before_modified_before_removed() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $schemaDiff = new SchemaDiff(
+            schema('existing'),
+            schema('existing', tables: [$table]),
+            addedTables: [$table],
+        );
+
+        $diff = new CatalogDiff(
+            new Catalog([schema('public'), schema('existing'), schema('old')]),
+            new Catalog([schema('new'), schema('existing'), schema('public')]),
+            addedSchemas: [schema('new')],
+            removedSchemas: [schema('old')],
+            modifiedSchemas: [$schemaDiff],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertSame('CREATE SCHEMA IF NOT EXISTS new', $sqls[0]->toSql());
+
+        $createTableIdx = null;
+        $dropSchemaIdx = null;
+
+        foreach ($sqls as $i => $sql) {
+            if (\str_contains($sql->toSql(), 'CREATE TABLE') && $createTableIdx === null) {
+                $createTableIdx = $i;
+            }
+
+            if (\str_contains($sql->toSql(), 'DROP SCHEMA old CASCADE') && $dropSchemaIdx === null) {
+                $dropSchemaIdx = $i;
+            }
+        }
+
+        self::assertNotNull($createTableIdx);
+        self::assertNotNull($dropSchemaIdx);
+        self::assertGreaterThan($createTableIdx, $dropSchemaIdx);
+    }
+
+    public function test_returns_empty_when_no_changes() : void
+    {
+        $catalog = new Catalog([]);
+
+        $diff = new CatalogDiff($catalog, $catalog);
+
+        self::assertSame([], $diff->generate());
+    }
+
+    public function test_reversed_added_schema() : void
+    {
+        $source = new Catalog([schema('public'), schema('audit')]);
+        $target = new Catalog([schema('public')]);
+
+        $diff = new CatalogDiff($source, $target, removedSchemas: [schema('audit')]);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP SCHEMA audit CASCADE', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_creates_removed_schema() : void
+    {
+        $auditSchema = schema(
+            'audit',
+            tables: [schema_table('events', [schema_column_integer('id', false)], schema: 'audit')],
+        );
+
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([schema('public'), $auditSchema]);
+
+        $diff = new CatalogDiff($source, $target, addedSchemas: [$auditSchema]);
+
+        $sqls = $diff->generate();
+
+        self::assertGreaterThanOrEqual(2, \count($sqls));
+        self::assertSame('CREATE SCHEMA IF NOT EXISTS audit', $sqls[0]->toSql());
+        self::assertStringContainsString('CREATE TABLE', $sqls[1]->toSql());
+        self::assertStringContainsString('events', $sqls[1]->toSql());
+    }
+
+    public function test_reversed_creates_removed_schema_with_sequence() : void
+    {
+        $auditSchema = schema(
+            'audit',
+            tables: [schema_table('events', [schema_column_integer('id', false)], schema: 'audit')],
+            sequences: [schema_sequence('events_id_seq')],
+        );
+
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([schema('public'), $auditSchema]);
+
+        $diff = new CatalogDiff($source, $target, addedSchemas: [$auditSchema]);
+
+        $sqls = $diff->generate();
+
+        self::assertSame('CREATE SCHEMA IF NOT EXISTS audit', $sqls[0]->toSql());
+        self::assertStringContainsString('CREATE SEQUENCE', $sqls[1]->toSql());
+        self::assertStringContainsString('events_id_seq', $sqls[1]->toSql());
+        self::assertStringContainsString('CREATE TABLE', $sqls[2]->toSql());
+    }
+
+    public function test_reversed_delegates_to_schema_diff() : void
+    {
+        $source = new Catalog([schema('public')]);
+        $target = new Catalog([schema('public')]);
+
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $schemaDiff = new SchemaDiff(
+            schema('public', tables: [$table]),
+            schema('public'),
+            removedTables: [$table],
+        );
+
+        $diff = new CatalogDiff($target, $source, modifiedSchemas: [$schemaDiff]);
+
+        $sqls = $diff->generate();
+
+        self::assertNotEmpty($sqls);
+        self::assertStringContainsString('DROP TABLE', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_ordering_added_before_modified_before_removed() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $schemaDiff = new SchemaDiff(
+            schema('existing', tables: [$table]),
+            schema('existing'),
+            removedTables: [$table],
+        );
+
+        $diff = new CatalogDiff(
+            new Catalog([schema('new'), schema('existing'), schema('public')]),
+            new Catalog([schema('public'), schema('existing'), schema('old')]),
+            addedSchemas: [schema('old')],
+            removedSchemas: [schema('new')],
+            modifiedSchemas: [$schemaDiff],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertSame('CREATE SCHEMA IF NOT EXISTS old', $sqls[0]->toSql());
+
+        $dropTableIdx = null;
+        $dropSchemaIdx = null;
+
+        foreach ($sqls as $i => $sql) {
+            if (\str_contains($sql->toSql(), 'DROP TABLE') && $dropTableIdx === null) {
+                $dropTableIdx = $i;
+            }
+
+            if (\str_contains($sql->toSql(), 'DROP SCHEMA new CASCADE') && $dropSchemaIdx === null) {
+                $dropSchemaIdx = $i;
+            }
+        }
+
+        self::assertNotNull($dropTableIdx);
+        self::assertNotNull($dropSchemaIdx);
+        self::assertGreaterThan($dropTableIdx, $dropSchemaIdx);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/CatalogDiffViewRebuildTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/CatalogDiffViewRebuildTest.php
new file mode 100644
index 0000000000..619c427585
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/CatalogDiffViewRebuildTest.php
@@ -0,0 +1,264 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{ast_view_dependency_resolver, noop_view_dependency_resolver, schema, schema_column_bigint, schema_column_integer, schema_column_text, schema_materialized_view, schema_table, schema_view};
+
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\Schema\{Catalog, Column};
+use Flow\PostgreSql\Schema\Diff\{CatalogDiff, ColumnDiff, SchemaDiff, TableDiff};
+use PHPUnit\Framework\TestCase;
+
+final class CatalogDiffViewRebuildTest extends TestCase
+{
+    public function test_cascading_view_dependencies_resolved() : void
+    {
+        $sourceTable = schema_table('events', [schema_column_integer('id', false), schema_column_integer('amount')], schema: 'data');
+        $targetTable = schema_table('events', [schema_column_integer('id', false), schema_column_bigint('amount')], schema: 'data');
+
+        $source = new Catalog([
+            schema('data', tables: [$sourceTable]),
+            schema('report', views: [schema_view('event_summary', 'SELECT * FROM data.events')]),
+            schema('public', views: [schema_view('dashboard', 'SELECT * FROM report.event_summary')]),
+        ]);
+
+        $target = new Catalog([
+            schema('data', tables: [$targetTable]),
+            schema('report', views: [schema_view('event_summary', 'SELECT * FROM data.events')]),
+            schema('public', views: [schema_view('dashboard', 'SELECT * FROM report.event_summary')]),
+        ]);
+
+        $diff = new CatalogDiff(
+            $source,
+            $target,
+            modifiedSchemas: [
+                new SchemaDiff(
+                    $source->get('data'),
+                    $target->get('data'),
+                    modifiedTables: [
+                        new TableDiff(
+                            $sourceTable,
+                            $targetTable,
+                            modifiedColumns: [new ColumnDiff('data.events', schema_column_integer('amount'), schema_column_bigint('amount'))],
+                        ),
+                    ],
+                ),
+            ],
+            viewDependencyResolver: ast_view_dependency_resolver(),
+        );
+
+        $sqls = \array_map(static fn ($q) => $q->toSql(), $diff->generate());
+
+        self::assertSame('DROP VIEW public.dashboard', $sqls[0]);
+        self::assertSame('DROP VIEW report.event_summary', $sqls[1]);
+        self::assertStringContainsString('ALTER TABLE data.events ALTER COLUMN amount TYPE bigint', $sqls[2]);
+        self::assertSame('CREATE VIEW report.event_summary AS SELECT * FROM data.events', $sqls[3]);
+        self::assertSame('CREATE VIEW public.dashboard AS SELECT * FROM report.event_summary', $sqls[4]);
+    }
+
+    public function test_materialized_view_dropped_and_recreated_when_dependent_table_changes() : void
+    {
+        $sourceTable = schema_table('orders', [schema_column_integer('id', false), schema_column_integer('total')]);
+        $targetTable = schema_table('orders', [schema_column_integer('id', false), schema_column_bigint('total')]);
+
+        $source = new Catalog([
+            schema('public', tables: [$sourceTable], materializedViews: [schema_materialized_view('mv_order_stats', 'SELECT * FROM orders')]),
+        ]);
+
+        $target = new Catalog([
+            schema('public', tables: [$targetTable], materializedViews: [schema_materialized_view('mv_order_stats', 'SELECT * FROM orders')]),
+        ]);
+
+        $diff = new CatalogDiff(
+            $source,
+            $target,
+            modifiedSchemas: [
+                new SchemaDiff(
+                    $source->get('public'),
+                    $target->get('public'),
+                    modifiedTables: [
+                        new TableDiff(
+                            $sourceTable,
+                            $targetTable,
+                            modifiedColumns: [new ColumnDiff('public.orders', schema_column_integer('total'), schema_column_bigint('total'))],
+                        ),
+                    ],
+                ),
+            ],
+            viewDependencyResolver: ast_view_dependency_resolver(),
+        );
+
+        $sqls = \array_map(static fn ($q) => $q->toSql(), $diff->generate());
+
+        self::assertSame('DROP MATERIALIZED VIEW public.mv_order_stats', $sqls[0]);
+        self::assertStringContainsString('ALTER TABLE public.orders ALTER COLUMN total TYPE bigint', $sqls[1]);
+        self::assertSame('CREATE MATERIALIZED VIEW public.mv_order_stats AS SELECT * FROM orders', $sqls[2]);
+    }
+
+    public function test_noop_resolver_skips_view_rebuild_even_when_table_column_type_changes() : void
+    {
+        $sourceTable = schema_table('data', [schema_column_integer('id', false), schema_column_integer('amount')]);
+        $targetTable = schema_table('data', [schema_column_integer('id', false), schema_column_bigint('amount')]);
+
+        $source = new Catalog([
+            schema('public', tables: [$sourceTable], views: [schema_view('all_data', 'SELECT * FROM data')]),
+        ]);
+
+        $target = new Catalog([
+            schema('public', tables: [$targetTable], views: [schema_view('all_data', 'SELECT * FROM data')]),
+        ]);
+
+        $diff = new CatalogDiff(
+            $source,
+            $target,
+            modifiedSchemas: [
+                new SchemaDiff(
+                    $source->get('public'),
+                    $target->get('public'),
+                    modifiedTables: [
+                        new TableDiff(
+                            $sourceTable,
+                            $targetTable,
+                            modifiedColumns: [new ColumnDiff('public.data', schema_column_integer('amount'), schema_column_bigint('amount'))],
+                        ),
+                    ],
+                ),
+            ],
+            viewDependencyResolver: noop_view_dependency_resolver(),
+        );
+
+        $sqls = \array_map(static fn ($q) => $q->toSql(), $diff->generate());
+
+        self::assertCount(1, $sqls);
+        self::assertStringContainsString('ALTER TABLE public.data ALTER COLUMN amount TYPE bigint', $sqls[0]);
+    }
+
+    public function test_view_dropped_and_recreated_when_dependent_table_column_type_changes() : void
+    {
+        $sourceTable = schema_table('full_data', [schema_column_integer('id', false), schema_column_integer('amount')], schema: 'enriched');
+        $targetTable = schema_table('full_data', [schema_column_integer('id', false), schema_column_bigint('amount')], schema: 'enriched');
+
+        $source = new Catalog([
+            schema('enriched', tables: [$sourceTable]),
+            schema('public', views: [schema_view('enriched_full_data', 'SELECT * FROM enriched.full_data')]),
+        ]);
+
+        $target = new Catalog([
+            schema('enriched', tables: [$targetTable]),
+            schema('public', views: [schema_view('enriched_full_data', 'SELECT * FROM enriched.full_data')]),
+        ]);
+
+        $diff = new CatalogDiff(
+            $source,
+            $target,
+            modifiedSchemas: [
+                new SchemaDiff(
+                    $source->get('enriched'),
+                    $target->get('enriched'),
+                    modifiedTables: [
+                        new TableDiff(
+                            $sourceTable,
+                            $targetTable,
+                            modifiedColumns: [new ColumnDiff('enriched.full_data', schema_column_integer('amount'), schema_column_bigint('amount'))],
+                        ),
+                    ],
+                ),
+            ],
+            viewDependencyResolver: ast_view_dependency_resolver(),
+        );
+
+        $sqls = \array_map(static fn ($q) => $q->toSql(), $diff->generate());
+
+        self::assertSame('DROP VIEW public.enriched_full_data', $sqls[0]);
+        self::assertStringContainsString('ALTER TABLE enriched.full_data ALTER COLUMN amount TYPE bigint', $sqls[1]);
+        self::assertSame('CREATE VIEW public.enriched_full_data AS SELECT * FROM enriched.full_data', $sqls[2]);
+    }
+
+    public function test_view_not_affected_when_unrelated_table_modified() : void
+    {
+        $sourceTable = schema_table('orders', [schema_column_integer('id', false), schema_column_integer('amount')]);
+        $targetTable = schema_table('orders', [schema_column_integer('id', false), schema_column_bigint('amount')]);
+
+        $source = new Catalog([
+            schema(
+                'public',
+                tables: [$sourceTable, schema_table('users', [schema_column_integer('id', false)])],
+                views: [schema_view('active_users', 'SELECT * FROM users')],
+            ),
+        ]);
+
+        $target = new Catalog([
+            schema(
+                'public',
+                tables: [$targetTable, schema_table('users', [schema_column_integer('id', false)])],
+                views: [schema_view('active_users', 'SELECT * FROM users')],
+            ),
+        ]);
+
+        $diff = new CatalogDiff(
+            $source,
+            $target,
+            modifiedSchemas: [
+                new SchemaDiff(
+                    $source->get('public'),
+                    $target->get('public'),
+                    modifiedTables: [
+                        new TableDiff(
+                            $sourceTable,
+                            $targetTable,
+                            modifiedColumns: [new ColumnDiff('public.orders', schema_column_integer('amount'), schema_column_bigint('amount'))],
+                        ),
+                    ],
+                ),
+            ],
+            viewDependencyResolver: ast_view_dependency_resolver(),
+        );
+
+        $sqls = \array_map(static fn ($q) => $q->toSql(), $diff->generate());
+
+        foreach ($sqls as $sql) {
+            self::assertStringNotContainsString('DROP VIEW', $sql);
+            self::assertStringNotContainsString('CREATE VIEW', $sql);
+        }
+    }
+
+    public function test_view_not_dropped_when_table_only_adds_column() : void
+    {
+        $sourceTable = schema_table('users', [schema_column_integer('id', false)]);
+        $targetTable = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+
+        $source = new Catalog([
+            schema('public', tables: [$sourceTable], views: [schema_view('all_users', 'SELECT * FROM users')]),
+        ]);
+
+        $target = new Catalog([
+            schema('public', tables: [$targetTable], views: [schema_view('all_users', 'SELECT * FROM users')]),
+        ]);
+
+        $diff = new CatalogDiff(
+            $source,
+            $target,
+            modifiedSchemas: [
+                new SchemaDiff(
+                    $source->get('public'),
+                    $target->get('public'),
+                    modifiedTables: [
+                        new TableDiff($sourceTable, $targetTable, addedColumns: [new Column('name', ColumnType::text(), true)]),
+                    ],
+                ),
+            ],
+            viewDependencyResolver: ast_view_dependency_resolver(),
+        );
+
+        $sqls = \array_map(static fn ($q) => $q->toSql(), $diff->generate());
+
+        foreach ($sqls as $sql) {
+            self::assertStringNotContainsString('DROP VIEW', $sql);
+        }
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ADD COLUMN name pg_catalog.text', $sqls[0]);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ChangeSetTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ChangeSetTest.php
new file mode 100644
index 0000000000..105a87057e
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ChangeSetTest.php
@@ -0,0 +1,186 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Diff\ChangeSet;
+use PHPUnit\Framework\TestCase;
+
+final class ChangeSetTest extends TestCase
+{
+    public function test_constructor_with_added_and_removed_only() : void
+    {
+        $changeSet = new ChangeSet(['a', 'b'], ['c']);
+
+        self::assertSame(['a', 'b'], $changeSet->added);
+        self::assertSame(['c'], $changeSet->removed);
+        self::assertNull($changeSet->modified);
+        self::assertNull($changeSet->renamed);
+    }
+
+    public function test_constructor_with_all_properties() : void
+    {
+        $changeSet = new ChangeSet(['a'], ['b'], ['diff_ab'], ['old' => 'new']);
+
+        self::assertSame(['a'], $changeSet->added);
+        self::assertSame(['b'], $changeSet->removed);
+        self::assertSame(['diff_ab'], $changeSet->modified);
+        self::assertSame(['old' => 'new'], $changeSet->renamed);
+    }
+
+    public function test_constructor_with_empty_lists() : void
+    {
+        $changeSet = new ChangeSet([], []);
+
+        self::assertSame([], $changeSet->added);
+        self::assertSame([], $changeSet->removed);
+        self::assertNull($changeSet->modified);
+        self::assertNull($changeSet->renamed);
+    }
+
+    public function test_from_named_objects_detects_added() : void
+    {
+        $result = ChangeSet::fromNamedObjects(
+            [],
+            [['name' => 'a'], ['name' => 'b']],
+            static fn (array $item) : string => $item['name'],
+        );
+
+        self::assertCount(2, $result->added);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_from_named_objects_detects_added_removed_and_modified_simultaneously() : void
+    {
+        $source = [
+            ['name' => 'keep', 'value' => 1],
+            ['name' => 'modify', 'value' => 10],
+            ['name' => 'remove', 'value' => 99],
+        ];
+        $target = [
+            ['name' => 'keep', 'value' => 1],
+            ['name' => 'modify', 'value' => 20],
+            ['name' => 'add', 'value' => 50],
+        ];
+
+        $result = ChangeSet::fromNamedObjects(
+            $source,
+            $target,
+            static fn (array $item) : string => $item['name'],
+            static fn (array $a, array $b) : ?string => $a['value'] === $b['value'] ? null : 'modified:' . $a['name'],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('add', $result->added[0]['name']);
+        self::assertCount(1, $result->removed);
+        self::assertSame('remove', $result->removed[0]['name']);
+        self::assertSame(['modified:modify'], $result->modified);
+    }
+
+    public function test_from_named_objects_detects_modified() : void
+    {
+        $source = [['name' => 'a', 'value' => 1]];
+        $target = [['name' => 'a', 'value' => 2]];
+
+        $result = ChangeSet::fromNamedObjects(
+            $source,
+            $target,
+            static fn (array $item) : string => $item['name'],
+            static fn (array $a, array $b) : ?string => $a['value'] === $b['value'] ? null : 'value_changed',
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+        self::assertSame(['value_changed'], $result->modified);
+    }
+
+    public function test_from_named_objects_detects_removed() : void
+    {
+        $result = ChangeSet::fromNamedObjects(
+            [['name' => 'a'], ['name' => 'b']],
+            [],
+            static fn (array $item) : string => $item['name'],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertCount(2, $result->removed);
+    }
+
+    public function test_from_named_objects_modified_returns_null_when_all_equal() : void
+    {
+        $items = [['name' => 'a', 'value' => 1]];
+
+        $result = ChangeSet::fromNamedObjects(
+            $items,
+            $items,
+            static fn (array $item) : string => $item['name'],
+            static fn (array $a, array $b) : ?string => $a === $b ? null : 'diff',
+        );
+
+        self::assertNull($result->modified);
+    }
+
+    public function test_from_named_objects_no_changes_for_identical() : void
+    {
+        $items = [['name' => 'a', 'value' => 1], ['name' => 'b', 'value' => 2]];
+
+        $result = ChangeSet::fromNamedObjects(
+            $items,
+            $items,
+            static fn (array $item) : string => $item['name'],
+            static fn (array $a, array $b) : ?string => $a === $b ? null : 'changed',
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+        self::assertNull($result->modified);
+    }
+
+    public function test_from_named_objects_uses_identity_function_for_matching() : void
+    {
+        $source = [['id' => 'x', 'label' => 'old']];
+        $target = [['id' => 'x', 'label' => 'new']];
+
+        $result = ChangeSet::fromNamedObjects(
+            $source,
+            $target,
+            static fn (array $item) : string => $item['id'],
+            static fn (array $a, array $b) : ?string => $a['label'] === $b['label'] ? null : 'label_changed',
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+        self::assertSame(['label_changed'], $result->modified);
+    }
+
+    public function test_from_named_objects_with_empty_collections() : void
+    {
+        $result = ChangeSet::fromNamedObjects(
+            [],
+            [],
+            static fn (array $item) : string => $item['name'],
+            static fn (array $a, array $b) : ?string => null,
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+        self::assertNull($result->modified);
+    }
+
+    public function test_from_named_objects_without_modified_fn() : void
+    {
+        $source = [['name' => 'a', 'value' => 1]];
+        $target = [['name' => 'a', 'value' => 2]];
+
+        $result = ChangeSet::fromNamedObjects(
+            $source,
+            $target,
+            static fn (array $item) : string => $item['name'],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+        self::assertNull($result->modified);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ColumnDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ColumnDiffTest.php
new file mode 100644
index 0000000000..3ba79f5571
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ColumnDiffTest.php
@@ -0,0 +1,409 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\Schema\{Column, IdentityGeneration};
+use Flow\PostgreSql\Schema\Diff\ColumnDiff;
+use PHPUnit\Framework\TestCase;
+
+final class ColumnDiffTest extends TestCase
+{
+    public function test_adds_generated_column() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('full_name', ColumnType::text(), true),
+            new Column('full_name', ColumnType::text(), true, isGenerated: true, generationExpression: 'first_name || last_name'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP full_name', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN full_name pg_catalog.text GENERATED ALWAYS AS (first_name || last_name) STORED', $sqls[1]->toSql());
+    }
+
+    public function test_adds_identity_column() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('id', ColumnType::integer(), false),
+            new Column('id', ColumnType::integer(), false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP id', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN id int NOT NULL GENERATED ALWAYS AS IDENTITY', $sqls[1]->toSql());
+    }
+
+    public function test_changes_generation_expression() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('full_name', ColumnType::text(), true, isGenerated: true, generationExpression: 'first_name || last_name'),
+            new Column('full_name', ColumnType::text(), true, isGenerated: true, generationExpression: 'upper(first_name || last_name)'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP full_name', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN full_name pg_catalog.text GENERATED ALWAYS AS (upper(first_name || last_name)) STORED', $sqls[1]->toSql());
+    }
+
+    public function test_changes_identity_generation_type() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('id', ColumnType::integer(), false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS),
+            new Column('id', ColumnType::integer(), false, isIdentity: true, identityGeneration: IdentityGeneration::BY_DEFAULT),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP id', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN id int NOT NULL GENERATED BY DEFAULT AS IDENTITY', $sqls[1]->toSql());
+    }
+
+    public function test_changes_type() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('col', ColumnType::text(), true),
+            new Column('col', ColumnType::integer(), true),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN col TYPE int', $sqls[0]->toSql());
+    }
+
+    public function test_detects_default_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.test_table',
+            new Column('col', ColumnType::text(), true, 'old_default'),
+            new Column('col', ColumnType::text(), true, 'new_default'),
+        );
+
+        self::assertTrue($diff->hasDefaultChanged());
+        self::assertFalse($diff->hasTypeChanged());
+        self::assertFalse($diff->hasNullableChanged());
+        self::assertFalse($diff->hasNameChanged());
+    }
+
+    public function test_detects_generation_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.test_table',
+            new Column('col', ColumnType::text(), true, isGenerated: false),
+            new Column('col', ColumnType::text(), true, isGenerated: true, generationExpression: 'upper(name)'),
+        );
+
+        self::assertTrue($diff->hasGenerationChanged());
+    }
+
+    public function test_detects_identity_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.test_table',
+            new Column('col', ColumnType::integer(), false, isIdentity: false),
+            new Column('col', ColumnType::integer(), false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS),
+        );
+
+        self::assertTrue($diff->hasIdentityChanged());
+    }
+
+    public function test_detects_name_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.test_table',
+            new Column('old_name', ColumnType::text(), true),
+            new Column('new_name', ColumnType::text(), true),
+        );
+
+        self::assertTrue($diff->hasNameChanged());
+        self::assertFalse($diff->hasTypeChanged());
+        self::assertFalse($diff->hasNullableChanged());
+        self::assertFalse($diff->hasDefaultChanged());
+    }
+
+    public function test_detects_nullable_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.test_table',
+            new Column('col', ColumnType::text(), true),
+            new Column('col', ColumnType::text(), false),
+        );
+
+        self::assertTrue($diff->hasNullableChanged());
+        self::assertFalse($diff->hasTypeChanged());
+    }
+
+    public function test_detects_type_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.test_table',
+            new Column('col', ColumnType::integer(), true),
+            new Column('col', ColumnType::text(), true),
+        );
+
+        self::assertTrue($diff->hasTypeChanged());
+        self::assertFalse($diff->hasNullableChanged());
+    }
+
+    public function test_drops_default() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('col', ColumnType::text(), true, '42'),
+            new Column('col', ColumnType::text(), true, null),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN col DROP DEFAULT', $sqls[0]->toSql());
+    }
+
+    public function test_drops_not_null() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('col', ColumnType::text(), false),
+            new Column('col', ColumnType::text(), true),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN col DROP NOT NULL', $sqls[0]->toSql());
+    }
+
+    public function test_generated_column_with_not_null() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('computed', ColumnType::text(), true),
+            new Column('computed', ColumnType::text(), false, isGenerated: true, generationExpression: 'upper(name)'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP computed', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN computed pg_catalog.text NOT NULL GENERATED ALWAYS AS (upper(name)) STORED', $sqls[1]->toSql());
+    }
+
+    public function test_handles_multiple_changes_type_nullable_default() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('col', ColumnType::text(), true, null),
+            new Column('col', ColumnType::integer(), false, '0'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(3, $sqls);
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN col TYPE int', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN col SET NOT NULL', $sqls[1]->toSql());
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN col SET DEFAULT 0', $sqls[2]->toSql());
+    }
+
+    public function test_handles_rename_and_type_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('old_name', ColumnType::text(), true),
+            new Column('new_name', ColumnType::integer(), true),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users RENAME COLUMN old_name TO new_name', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN new_name TYPE int', $sqls[1]->toSql());
+    }
+
+    public function test_handles_rename_with_generation_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('old_name', ColumnType::text(), true),
+            new Column('new_name', ColumnType::text(), true, isGenerated: true, generationExpression: 'upper(name)'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(3, $sqls);
+        self::assertSame('ALTER TABLE public.users RENAME COLUMN old_name TO new_name', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users DROP new_name', $sqls[1]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN new_name pg_catalog.text GENERATED ALWAYS AS (upper(name)) STORED', $sqls[2]->toSql());
+    }
+
+    public function test_identity_with_default_and_not_null() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('id', ColumnType::integer(), true),
+            new Column('id', ColumnType::integer(), false, default: '0', isIdentity: true, identityGeneration: IdentityGeneration::BY_DEFAULT),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP id', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN id int NOT NULL DEFAULT 0 GENERATED BY DEFAULT AS IDENTITY', $sqls[1]->toSql());
+    }
+
+    public function test_no_changes_when_identical() : void
+    {
+        $diff = new ColumnDiff(
+            'public.test_table',
+            new Column('col', ColumnType::text(), true, 'default_val'),
+            new Column('col', ColumnType::text(), true, 'default_val'),
+        );
+
+        self::assertFalse($diff->hasNameChanged());
+        self::assertFalse($diff->hasTypeChanged());
+        self::assertFalse($diff->hasNullableChanged());
+        self::assertFalse($diff->hasDefaultChanged());
+        self::assertFalse($diff->hasIdentityChanged());
+        self::assertFalse($diff->hasGenerationChanged());
+    }
+
+    public function test_removes_generation_from_column() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('full_name', ColumnType::text(), true, isGenerated: true, generationExpression: 'first_name || last_name'),
+            new Column('full_name', ColumnType::text(), true),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP full_name', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN full_name pg_catalog.text', $sqls[1]->toSql());
+    }
+
+    public function test_removes_identity_from_column() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('id', ColumnType::integer(), false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS),
+            new Column('id', ColumnType::integer(), false),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP id', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN id int NOT NULL', $sqls[1]->toSql());
+    }
+
+    public function test_renames_column() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('old_name', ColumnType::text(), true),
+            new Column('new_name', ColumnType::text(), true),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users RENAME COLUMN old_name TO new_name', $sqls[0]->toSql());
+    }
+
+    public function test_returns_empty_when_no_changes() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('col', ColumnType::text(), true),
+            new Column('col', ColumnType::text(), true),
+        );
+
+        self::assertSame([], $diff->generate());
+    }
+
+    public function test_reversed_generation_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('full_name', ColumnType::text(), true, isGenerated: true, generationExpression: 'upper(name)'),
+            new Column('full_name', ColumnType::text(), true),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP full_name', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN full_name pg_catalog.text', $sqls[1]->toSql());
+    }
+
+    public function test_reversed_identity_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('id', ColumnType::integer(), false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS),
+            new Column('id', ColumnType::integer(), false),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP id', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN id int NOT NULL', $sqls[1]->toSql());
+    }
+
+    public function test_reversed_type_change() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('col', ColumnType::integer(), true),
+            new Column('col', ColumnType::text(), true),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN col TYPE pg_catalog.text', $sqls[0]->toSql());
+    }
+
+    public function test_sets_default() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('col', ColumnType::text(), true, null),
+            new Column('col', ColumnType::text(), true, '42'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN col SET DEFAULT 42', $sqls[0]->toSql());
+    }
+
+    public function test_sets_not_null() : void
+    {
+        $diff = new ColumnDiff(
+            'public.users',
+            new Column('col', ColumnType::text(), true),
+            new Column('col', ColumnType::text(), false),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN col SET NOT NULL', $sqls[0]->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ConstraintComparatorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ConstraintComparatorTest.php
new file mode 100644
index 0000000000..c9cef48663
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ConstraintComparatorTest.php
@@ -0,0 +1,383 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\QueryBuilder\Schema\ReferentialAction;
+use Flow\PostgreSql\Schema\Constraint\{CheckConstraint, ExcludeConstraint, ForeignKey, UniqueConstraint};
+use Flow\PostgreSql\Schema\Diff\ConstraintComparator;
+use PHPUnit\Framework\TestCase;
+
+final class ConstraintComparatorTest extends TestCase
+{
+    public function test_check_constraint_added() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffCheckConstraints(
+            [],
+            [new CheckConstraint('age > 0', 'chk_age')],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('chk_age', $result->added[0]->name);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_check_constraint_modified_expression() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffCheckConstraints(
+            [new CheckConstraint('age > 0', 'chk_age')],
+            [new CheckConstraint('age > 18', 'chk_age')],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('age > 18', $result->added[0]->expression);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_check_constraint_modified_no_inherit() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffCheckConstraints(
+            [new CheckConstraint('age > 0', 'chk_age', noInherit: false)],
+            [new CheckConstraint('age > 0', 'chk_age', noInherit: true)],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertTrue($result->added[0]->noInherit);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_check_constraint_removed() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffCheckConstraints(
+            [new CheckConstraint('age > 0', 'chk_age')],
+            [],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_exclude_constraint_added() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffExcludeConstraints(
+            [],
+            [new ExcludeConstraint('USING gist (range WITH &&)', 'excl_range')],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('excl_range', $result->added[0]->name);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_exclude_constraint_modified_definition() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffExcludeConstraints(
+            [new ExcludeConstraint('USING gist (range WITH &&)', 'excl_range')],
+            [new ExcludeConstraint('USING gist (period WITH &&)', 'excl_range')],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('USING gist (period WITH &&)', $result->added[0]->definition);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_exclude_constraint_removed() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffExcludeConstraints(
+            [new ExcludeConstraint('USING gist (range WITH &&)', 'excl_range')],
+            [],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_foreign_key_added() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [],
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'])],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('fk_user', $result->added[0]->name);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_foreign_key_identical() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'])],
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'])],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_foreign_key_modified_columns() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'])],
+            [new ForeignKey('fk_user', ['account_id'], 'public', 'users', ['id'])],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame(['account_id'], $result->added[0]->columns);
+        self::assertCount(1, $result->removed);
+        self::assertSame(['user_id'], $result->removed[0]->columns);
+    }
+
+    public function test_foreign_key_modified_deferrable() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'], deferrable: false)],
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'], deferrable: true)],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertTrue($result->added[0]->deferrable);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_foreign_key_modified_initially_deferred() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'], initiallyDeferred: false)],
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'], initiallyDeferred: true)],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertTrue($result->added[0]->initiallyDeferred);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_foreign_key_modified_on_delete() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'], onDelete: ReferentialAction::NO_ACTION)],
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'], onDelete: ReferentialAction::SET_NULL)],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame(ReferentialAction::SET_NULL, $result->added[0]->onDelete);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_foreign_key_modified_on_update() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'], onUpdate: ReferentialAction::NO_ACTION)],
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'], onUpdate: ReferentialAction::CASCADE)],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame(ReferentialAction::CASCADE, $result->added[0]->onUpdate);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_foreign_key_modified_reference_columns() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'])],
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['uuid'])],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame(['uuid'], $result->added[0]->referenceColumns);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_foreign_key_modified_reference_schema() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'])],
+            [new ForeignKey('fk_user', ['user_id'], 'audit', 'users', ['id'])],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('audit', $result->added[0]->referenceSchema);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_foreign_key_modified_reference_table() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'])],
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'accounts', ['id'])],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('accounts', $result->added[0]->referenceTable);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_foreign_key_removed() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey('fk_user', ['user_id'], 'public', 'users', ['id'])],
+            [],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertCount(1, $result->removed);
+        self::assertSame('fk_user', $result->removed[0]->name);
+    }
+
+    public function test_unique_constraint_added() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffUniqueConstraints(
+            [],
+            [new UniqueConstraint(['email'], 'uq_email')],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('uq_email', $result->added[0]->name);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_unique_constraint_identical_columns_in_different_order() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffUniqueConstraints(
+            [new UniqueConstraint(['a', 'b'], 'uq_ab')],
+            [new UniqueConstraint(['b', 'a'], 'uq_ab')],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_unique_constraint_modified_columns() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffUniqueConstraints(
+            [new UniqueConstraint(['email'], 'uq_email')],
+            [new UniqueConstraint(['username'], 'uq_email')],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame(['username'], $result->added[0]->columns);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_unique_constraint_modified_nulls_not_distinct() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffUniqueConstraints(
+            [new UniqueConstraint(['email'], 'uq_email', nullsNotDistinct: false)],
+            [new UniqueConstraint(['email'], 'uq_email', nullsNotDistinct: true)],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertTrue($result->added[0]->nullsNotDistinct);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_unique_constraint_removed() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffUniqueConstraints(
+            [new UniqueConstraint(['email'], 'uq_email')],
+            [],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertCount(1, $result->removed);
+    }
+
+    public function test_unnamed_check_constraint_matched_by_expression() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffCheckConstraints(
+            [new CheckConstraint('age > 0')],
+            [new CheckConstraint('age > 0')],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_unnamed_exclude_constraint_matched_by_definition() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffExcludeConstraints(
+            [new ExcludeConstraint('USING gist (range WITH &&)')],
+            [new ExcludeConstraint('USING gist (range WITH &&)')],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_unnamed_foreign_key_matched_by_structural_identity() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffForeignKeys(
+            [new ForeignKey(null, ['user_id'], 'public', 'users', ['id'])],
+            [new ForeignKey(null, ['user_id'], 'public', 'users', ['id'])],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+    }
+
+    public function test_unnamed_unique_constraint_matched_by_columns() : void
+    {
+        $comparator = new ConstraintComparator();
+
+        $result = $comparator->diffUniqueConstraints(
+            [new UniqueConstraint(['email', 'tenant_id'])],
+            [new UniqueConstraint(['tenant_id', 'email'])],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/DomainDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/DomainDiffTest.php
new file mode 100644
index 0000000000..5029d44c1f
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/DomainDiffTest.php
@@ -0,0 +1,219 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\schema_domain;
+
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\Schema\Constraint\CheckConstraint;
+use Flow\PostgreSql\Schema\Diff\DomainDiff;
+use PHPUnit\Framework\TestCase;
+
+final class DomainDiffTest extends TestCase
+{
+    public function test_adds_check_constraint() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('positive_int', ColumnType::integer()),
+            schema_domain('positive_int', ColumnType::integer()),
+            addedCheckConstraints: [new CheckConstraint('value > 0', 'positive_check')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER DOMAIN positive_int ADD CONSTRAINT positive_check CHECK (value > 0)', $sqls[0]->toSql());
+    }
+
+    public function test_changes_default() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text(), default: null),
+            schema_domain('email', ColumnType::text(), default: "'unknown'"),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame("ALTER DOMAIN email SET DEFAULT 'unknown'", $sqls[0]->toSql());
+    }
+
+    public function test_changes_nullable() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text(), nullable: true),
+            schema_domain('email', ColumnType::text(), nullable: false),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER DOMAIN email SET NOT NULL', $sqls[0]->toSql());
+    }
+
+    public function test_drops_check_constraint() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('positive_int', ColumnType::integer()),
+            schema_domain('positive_int', ColumnType::integer()),
+            removedCheckConstraints: [new CheckConstraint('value > 0', 'positive_check')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER DOMAIN positive_int DROP CONSTRAINT positive_check', $sqls[0]->toSql());
+    }
+
+    public function test_drops_default() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text(), default: "'unknown'"),
+            schema_domain('email', ColumnType::text(), default: null),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER DOMAIN email DROP DEFAULT', $sqls[0]->toSql());
+    }
+
+    public function test_has_base_type_changed_returns_false_when_same() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text()),
+            schema_domain('email', ColumnType::text()),
+        );
+
+        self::assertFalse($diff->hasBaseTypeChanged());
+    }
+
+    public function test_has_base_type_changed_returns_true_when_different() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('positive_int', ColumnType::integer()),
+            schema_domain('positive_int', ColumnType::bigint()),
+        );
+
+        self::assertTrue($diff->hasBaseTypeChanged());
+    }
+
+    public function test_has_default_changed_returns_false_when_same() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text(), default: 'unknown'),
+            schema_domain('email', ColumnType::text(), default: 'unknown'),
+        );
+
+        self::assertFalse($diff->hasDefaultChanged());
+    }
+
+    public function test_has_default_changed_returns_true_when_different() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text(), default: 'unknown'),
+            schema_domain('email', ColumnType::text(), default: 'empty'),
+        );
+
+        self::assertTrue($diff->hasDefaultChanged());
+    }
+
+    public function test_has_nullable_changed_returns_false_when_same() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text(), nullable: false),
+            schema_domain('email', ColumnType::text(), nullable: false),
+        );
+
+        self::assertFalse($diff->hasNullableChanged());
+    }
+
+    public function test_has_nullable_changed_returns_true_when_different() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text(), nullable: true),
+            schema_domain('email', ColumnType::text(), nullable: false),
+        );
+
+        self::assertTrue($diff->hasNullableChanged());
+    }
+
+    public function test_recreates_when_base_type_changed() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('positive_int', ColumnType::integer()),
+            schema_domain('positive_int', ColumnType::bigint()),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('DROP DOMAIN positive_int CASCADE', $sqls[0]->toSql());
+        self::assertSame('CREATE DOMAIN positive_int AS bigint', $sqls[1]->toSql());
+    }
+
+    public function test_recreates_with_all_properties_when_base_type_changed() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('positive_int', ColumnType::integer(), nullable: false, default: '0', checkConstraints: [new CheckConstraint('value >= 0', 'non_negative')]),
+            schema_domain('positive_int', ColumnType::bigint(), nullable: false, default: '0', checkConstraints: [new CheckConstraint('value >= 0', 'non_negative')]),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('DROP DOMAIN positive_int CASCADE', $sqls[0]->toSql());
+        self::assertSame('CREATE DOMAIN positive_int AS bigint NOT NULL DEFAULT 0 CONSTRAINT non_negative CHECK (value >= 0)', $sqls[1]->toSql());
+    }
+
+    public function test_returns_empty_when_no_changes() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text()),
+            schema_domain('email', ColumnType::text()),
+        );
+
+        self::assertSame([], $diff->generate());
+    }
+
+    public function test_reversed_nullable_change() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('email', ColumnType::text(), nullable: false),
+            schema_domain('email', ColumnType::text(), nullable: true),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER DOMAIN email DROP NOT NULL', $sqls[0]->toSql());
+    }
+
+    public function test_throws_when_adding_unnamed_constraint() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('positive_int', ColumnType::integer()),
+            schema_domain('positive_int', ColumnType::integer()),
+            addedCheckConstraints: [new CheckConstraint('value > 0')],
+        );
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Cannot add unnamed check constraint on domain "positive_int"');
+        $diff->generate();
+    }
+
+    public function test_throws_when_dropping_unnamed_constraint() : void
+    {
+        $diff = new DomainDiff(
+            schema_domain('positive_int', ColumnType::integer()),
+            schema_domain('positive_int', ColumnType::integer()),
+            removedCheckConstraints: [new CheckConstraint('value > 0')],
+        );
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Cannot drop unnamed check constraint on domain "positive_int"');
+        $diff->generate();
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ExtensionDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ExtensionDiffTest.php
new file mode 100644
index 0000000000..36c4de82cf
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ExtensionDiffTest.php
@@ -0,0 +1,115 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\schema_extension;
+
+use Flow\PostgreSql\Schema\Diff\ExtensionDiff;
+use PHPUnit\Framework\TestCase;
+
+final class ExtensionDiffTest extends TestCase
+{
+    public function test_generates_alter_extension_update_to() : void
+    {
+        $diff = new ExtensionDiff(
+            schema_extension('uuid-ossp', '1.0'),
+            schema_extension('uuid-ossp', '1.1'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER EXTENSION "uuid-ossp" UPDATE TO "1.1"', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_extension_update_when_target_version_null() : void
+    {
+        $diff = new ExtensionDiff(
+            schema_extension('uuid-ossp', '1.0'),
+            schema_extension('uuid-ossp'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER EXTENSION "uuid-ossp" UPDATE', $sqls[0]->toSql());
+    }
+
+    public function test_has_version_changed_returns_false_when_both_null() : void
+    {
+        $diff = new ExtensionDiff(
+            schema_extension('uuid-ossp'),
+            schema_extension('uuid-ossp'),
+        );
+
+        self::assertFalse($diff->hasVersionChanged());
+    }
+
+    public function test_has_version_changed_returns_false_when_same() : void
+    {
+        $diff = new ExtensionDiff(
+            schema_extension('uuid-ossp', '1.0'),
+            schema_extension('uuid-ossp', '1.0'),
+        );
+
+        self::assertFalse($diff->hasVersionChanged());
+    }
+
+    public function test_has_version_changed_returns_true_when_different() : void
+    {
+        $diff = new ExtensionDiff(
+            schema_extension('uuid-ossp', '1.0'),
+            schema_extension('uuid-ossp', '1.1'),
+        );
+
+        self::assertTrue($diff->hasVersionChanged());
+    }
+
+    public function test_has_version_changed_returns_true_when_null_to_value() : void
+    {
+        $diff = new ExtensionDiff(
+            schema_extension('uuid-ossp'),
+            schema_extension('uuid-ossp', '1.0'),
+        );
+
+        self::assertTrue($diff->hasVersionChanged());
+    }
+
+    public function test_returns_empty_when_no_changes() : void
+    {
+        $diff = new ExtensionDiff(
+            schema_extension('uuid-ossp', '1.0'),
+            schema_extension('uuid-ossp', '1.0'),
+        );
+
+        self::assertSame([], $diff->generate());
+    }
+
+    public function test_reversed_version_change() : void
+    {
+        $diff = new ExtensionDiff(
+            schema_extension('uuid-ossp', '1.1'),
+            schema_extension('uuid-ossp', '1.0'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER EXTENSION "uuid-ossp" UPDATE TO "1.0"', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_version_change_when_target_version_null() : void
+    {
+        $diff = new ExtensionDiff(
+            schema_extension('uuid-ossp', '1.0'),
+            schema_extension('uuid-ossp'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER EXTENSION "uuid-ossp" UPDATE', $sqls[0]->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/FuncDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/FuncDiffTest.php
new file mode 100644
index 0000000000..29ebb9f7ce
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/FuncDiffTest.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{col, eq, literal, schema_function, select, table};
+
+use Flow\PostgreSql\Schema\Diff\FuncDiff;
+use PHPUnit\Framework\TestCase;
+
+final class FuncDiffTest extends TestCase
+{
+    public function test_generates_create_or_replace_function() : void
+    {
+        $diff = new FuncDiff(
+            schema_function('get_user', 'text', ['integer'], 'sql', select(col('name'))->from(table('users'))->where(eq(col('id'), literal(1)))->toSql()),
+            schema_function('get_user', 'text', ['integer'], 'plpgsql', 'BEGIN RETURN (SELECT name FROM users WHERE id = $1); END'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE OR REPLACE FUNCTION get_user(IN int) RETURNS text LANGUAGE plpgsql AS $$BEGIN RETURN (SELECT name FROM users WHERE id = $1); END$$',
+            $sqls[0]->toSql()
+        );
+    }
+
+    public function test_returns_empty_when_definition_null() : void
+    {
+        $diff = new FuncDiff(
+            schema_function('get_user', 'text', ['integer'], 'sql', 'SELECT name FROM users WHERE id = $1'),
+            schema_function('get_user', 'text', ['integer'], 'plpgsql'),
+        );
+
+        self::assertSame([], $diff->generate());
+    }
+
+    public function test_reversed_function_definition_change() : void
+    {
+        $diff = new FuncDiff(
+            schema_function('get_user', 'text', ['integer'], 'plpgsql', 'BEGIN RETURN (SELECT name FROM users WHERE id = $1); END'),
+            schema_function('get_user', 'text', ['integer'], 'sql', 'SELECT name FROM users WHERE id = $1'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE OR REPLACE FUNCTION get_user(IN int) RETURNS text LANGUAGE sql AS $$SELECT name FROM users WHERE id = $1$$',
+            $sqls[0]->toSql()
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/GreedySimilarityRenameStrategyTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/GreedySimilarityRenameStrategyTest.php
new file mode 100644
index 0000000000..8433f88255
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/GreedySimilarityRenameStrategyTest.php
@@ -0,0 +1,198 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Diff\{GreedySimilarityRenameStrategy, LevenshteinStrategy, RenameCandidate, SimilarTextStrategy};
+use PHPUnit\Framework\TestCase;
+
+final class GreedySimilarityRenameStrategyTest extends TestCase
+{
+    public function test_ambiguous_candidates_resolved_by_similarity() : void
+    {
+        $strategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+
+        $result = $strategy->resolve([
+            new RenameCandidate('net_commission', 'net_commission_cents'),
+            new RenameCandidate('net_commission', 'retail_agency_commission_cents'),
+            new RenameCandidate('net_commission', 'total_commission_cents'),
+            new RenameCandidate('retail_agency_commission', 'net_commission_cents'),
+            new RenameCandidate('retail_agency_commission', 'retail_agency_commission_cents'),
+            new RenameCandidate('retail_agency_commission', 'total_commission_cents'),
+            new RenameCandidate('total_commission', 'net_commission_cents'),
+            new RenameCandidate('total_commission', 'retail_agency_commission_cents'),
+            new RenameCandidate('total_commission', 'total_commission_cents'),
+        ]);
+
+        $renames = [];
+
+        foreach ($result as $match) {
+            $renames[$match->removedName] = $match->addedName;
+        }
+
+        \ksort($renames);
+
+        self::assertSame([
+            'net_commission_cents' => 'net_commission',
+            'retail_agency_commission_cents' => 'retail_agency_commission',
+            'total_commission_cents' => 'total_commission',
+        ], $renames);
+    }
+
+    public function test_below_threshold_not_matched() : void
+    {
+        $strategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+
+        $result = $strategy->resolve([
+            new RenameCandidate('xyz_completely_different', 'foo'),
+            new RenameCandidate('xyz_completely_different', 'bar'),
+        ]);
+
+        self::assertSame([], $result);
+    }
+
+    public function test_different_similarity_strategy_changes_matching_outcome() : void
+    {
+        $candidates = [
+            new RenameCandidate('net_commission', 'net_commission_cents'),
+            new RenameCandidate('net_commission', 'total_commission_cents'),
+            new RenameCandidate('total_commission', 'net_commission_cents'),
+            new RenameCandidate('total_commission', 'total_commission_cents'),
+        ];
+
+        $withSimilarText = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+        $withLevenshtein = new GreedySimilarityRenameStrategy(new LevenshteinStrategy());
+
+        $similarTextResult = $withSimilarText->resolve($candidates);
+        $levenshteinResult = $withLevenshtein->resolve($candidates);
+
+        self::assertCount(2, $similarTextResult);
+        self::assertCount(2, $levenshteinResult);
+
+        $stRenames = [];
+
+        foreach ($similarTextResult as $m) {
+            $stRenames[$m->removedName] = $m->addedName;
+        }
+
+        $lvRenames = [];
+
+        foreach ($levenshteinResult as $m) {
+            $lvRenames[$m->removedName] = $m->addedName;
+        }
+
+        self::assertSame('net_commission', $stRenames['net_commission_cents']);
+        self::assertSame('total_commission', $stRenames['total_commission_cents']);
+        self::assertSame('net_commission', $lvRenames['net_commission_cents']);
+        self::assertSame('total_commission', $lvRenames['total_commission_cents']);
+    }
+
+    public function test_empty_candidates_returns_empty() : void
+    {
+        $strategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+
+        self::assertSame([], $strategy->resolve([]));
+    }
+
+    public function test_greedy_picks_highest_similarity_first() : void
+    {
+        $strategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+
+        $result = $strategy->resolve([
+            new RenameCandidate('full_name', 'first_name'),
+            new RenameCandidate('full_name', 'last_name'),
+        ]);
+
+        self::assertCount(1, $result);
+        self::assertSame('full_name', $result[0]->addedName);
+        self::assertSame('last_name', $result[0]->removedName);
+    }
+
+    public function test_higher_threshold_rejects_matches_that_default_accepts() : void
+    {
+        $candidates = [
+            new RenameCandidate('full_name', 'first_name'),
+            new RenameCandidate('full_name', 'last_name'),
+        ];
+
+        $defaultStrategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+        $strictStrategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy(90.0));
+
+        self::assertCount(1, $defaultStrategy->resolve($candidates));
+        self::assertSame([], $strictStrategy->resolve($candidates));
+    }
+
+    public function test_same_removed_not_matched_twice() : void
+    {
+        $strategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+
+        $result = $strategy->resolve([
+            new RenameCandidate('col_x', 'col_old'),
+            new RenameCandidate('col_y', 'col_old'),
+        ]);
+
+        self::assertCount(1, $result);
+        self::assertSame('col_old', $result[0]->removedName);
+    }
+
+    public function test_unambiguous_match_consumed_before_ambiguous_pass() : void
+    {
+        $strategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+
+        $result = $strategy->resolve([
+            new RenameCandidate('email', 'email_address'),
+            new RenameCandidate('name', 'email_address'),
+            new RenameCandidate('name', 'full_name'),
+        ]);
+
+        $renames = [];
+
+        foreach ($result as $match) {
+            $renames[$match->removedName] = $match->addedName;
+        }
+
+        self::assertCount(2, $renames);
+        self::assertSame('email', $renames['email_address']);
+        self::assertSame('name', $renames['full_name']);
+    }
+
+    public function test_unambiguous_matched_first_then_ambiguous_resolved() : void
+    {
+        $strategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+
+        $result = $strategy->resolve([
+            new RenameCandidate('unique_col', 'old_unique_col'),
+            new RenameCandidate('amount', 'amount_cents'),
+            new RenameCandidate('amount', 'total_cents'),
+            new RenameCandidate('total', 'amount_cents'),
+            new RenameCandidate('total', 'total_cents'),
+        ]);
+
+        $renames = [];
+
+        foreach ($result as $match) {
+            $renames[$match->removedName] = $match->addedName;
+        }
+
+        self::assertArrayHasKey('old_unique_col', $renames);
+        self::assertSame('unique_col', $renames['old_unique_col']);
+        self::assertArrayHasKey('amount_cents', $renames);
+        self::assertSame('amount', $renames['amount_cents']);
+        self::assertArrayHasKey('total_cents', $renames);
+        self::assertSame('total', $renames['total_cents']);
+    }
+
+    public function test_unambiguous_single_match() : void
+    {
+        $strategy = new GreedySimilarityRenameStrategy(new SimilarTextStrategy());
+
+        $result = $strategy->resolve([
+            new RenameCandidate('full_name', 'name'),
+        ]);
+
+        self::assertCount(1, $result);
+        self::assertSame('full_name', $result[0]->addedName);
+        self::assertSame('name', $result[0]->removedName);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/IndexComparatorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/IndexComparatorTest.php
new file mode 100644
index 0000000000..67e83af9e4
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/IndexComparatorTest.php
@@ -0,0 +1,173 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\schema_index;
+
+use Flow\PostgreSql\Schema\Diff\{GreedySimilarityRenameStrategy, IndexComparator, SimilarTextStrategy};
+use Flow\PostgreSql\Schema\IndexMethod;
+use PHPUnit\Framework\TestCase;
+
+final class IndexComparatorTest extends TestCase
+{
+    public function test_added_index_detected() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [],
+            [schema_index('idx_email', ['email'])],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('idx_email', $result->added[0]->name);
+        self::assertSame([], $result->removed);
+        self::assertSame([], $result->renamed);
+    }
+
+    public function test_ambiguous_rename_resolved_by_similarity() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [
+                schema_index('idx_old_a', ['email']),
+                schema_index('idx_old_b', ['email']),
+            ],
+            [
+                schema_index('idx_new', ['email']),
+            ],
+        );
+
+        self::assertCount(0, $result->added);
+        self::assertCount(1, $result->removed);
+        self::assertCount(1, $result->renamed);
+    }
+
+    public function test_index_with_same_name_different_columns_detected_as_change() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [schema_index('idx_search', ['email'])],
+            [schema_index('idx_search', ['name'])],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame(['name'], $result->added[0]->columns);
+        self::assertCount(1, $result->removed);
+        self::assertSame(['email'], $result->removed[0]->columns);
+        self::assertSame([], $result->renamed);
+    }
+
+    public function test_index_with_same_name_different_method_detected_as_change() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [schema_index('idx_email', ['email'], method: IndexMethod::BTREE)],
+            [schema_index('idx_email', ['email'], method: IndexMethod::HASH)],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame(IndexMethod::HASH, $result->added[0]->method);
+        self::assertCount(1, $result->removed);
+        self::assertSame(IndexMethod::BTREE, $result->removed[0]->method);
+        self::assertSame([], $result->renamed);
+    }
+
+    public function test_index_with_same_name_different_predicate_detected_as_change() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [schema_index('idx_active', ['active'], predicate: null)],
+            [schema_index('idx_active', ['active'], predicate: 'active = true')],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertSame('active = true', $result->added[0]->predicate);
+        self::assertCount(1, $result->removed);
+        self::assertNull($result->removed[0]->predicate);
+        self::assertSame([], $result->renamed);
+    }
+
+    public function test_index_with_same_name_different_primary_detected_as_change() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [schema_index('idx_id', ['id'], primary: false)],
+            [schema_index('idx_id', ['id'], primary: true)],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertTrue($result->added[0]->primary);
+        self::assertCount(1, $result->removed);
+        self::assertFalse($result->removed[0]->primary);
+        self::assertSame([], $result->renamed);
+    }
+
+    public function test_index_with_same_name_different_unique_detected_as_change() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [schema_index('idx_email', ['email'], unique: false)],
+            [schema_index('idx_email', ['email'], unique: true)],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertTrue($result->added[0]->unique);
+        self::assertCount(1, $result->removed);
+        self::assertFalse($result->removed[0]->unique);
+        self::assertSame([], $result->renamed);
+    }
+
+    public function test_no_changes_for_identical_indexes() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [schema_index('idx_email', ['email'])],
+            [schema_index('idx_email', ['email'])],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+        self::assertSame([], $result->renamed);
+    }
+
+    public function test_removed_index_detected() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [schema_index('idx_email', ['email'])],
+            [],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertCount(1, $result->removed);
+        self::assertSame('idx_email', $result->removed[0]->name);
+        self::assertSame([], $result->renamed);
+    }
+
+    public function test_rename_detected() : void
+    {
+        $comparator = new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->compare(
+            [schema_index('idx_old', ['email'])],
+            [schema_index('idx_new', ['email'])],
+        );
+
+        self::assertSame([], $result->added);
+        self::assertSame([], $result->removed);
+        self::assertCount(1, $result->renamed);
+        self::assertArrayHasKey('idx_old', $result->renamed);
+        self::assertSame('idx_new', $result->renamed['idx_old']->name);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/LevenshteinStrategyTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/LevenshteinStrategyTest.php
new file mode 100644
index 0000000000..834802e9b7
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/LevenshteinStrategyTest.php
@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Diff\LevenshteinStrategy;
+use PHPUnit\Framework\TestCase;
+
+final class LevenshteinStrategyTest extends TestCase
+{
+    public function test_both_empty_strings_score_100() : void
+    {
+        self::assertSame(100.0, (new LevenshteinStrategy())->similarity('', ''));
+    }
+
+    public function test_custom_threshold() : void
+    {
+        self::assertSame(75.0, (new LevenshteinStrategy(75.0))->threshold());
+    }
+
+    public function test_default_threshold_is_50() : void
+    {
+        self::assertSame(50.0, (new LevenshteinStrategy())->threshold());
+    }
+
+    public function test_identical_names_score_100() : void
+    {
+        self::assertSame(100.0, (new LevenshteinStrategy())->similarity('column_name', 'column_name'));
+    }
+
+    public function test_levenshtein_penalizes_suffix_removal_more_than_similar_text() : void
+    {
+        $levenshtein = new LevenshteinStrategy();
+
+        $score = $levenshtein->similarity('net_commission_cents', 'net_commission');
+
+        self::assertEqualsWithDelta(70.0, $score, 0.01);
+        self::assertLessThan(80.0, $score);
+    }
+
+    public function test_one_empty_string_scores_0() : void
+    {
+        self::assertSame(0.0, (new LevenshteinStrategy())->similarity('', 'something'));
+    }
+
+    public function test_realistic_column_rename_suffix_removed() : void
+    {
+        self::assertEqualsWithDelta(70.0, (new LevenshteinStrategy())->similarity('net_commission_cents', 'net_commission'), 0.01);
+    }
+
+    public function test_single_character_typo_scores_above_90() : void
+    {
+        self::assertEqualsWithDelta(90.91, (new LevenshteinStrategy())->similarity('column_name', 'column_namx'), 0.01);
+    }
+
+    public function test_unrelated_names_score_low() : void
+    {
+        $score = (new LevenshteinStrategy())->similarity('foo', 'xyz_completely_different');
+
+        self::assertLessThan(20.0, $score);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/LongestCommonSubstringStrategyTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/LongestCommonSubstringStrategyTest.php
new file mode 100644
index 0000000000..1f18897887
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/LongestCommonSubstringStrategyTest.php
@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Diff\LongestCommonSubstringStrategy;
+use PHPUnit\Framework\TestCase;
+
+final class LongestCommonSubstringStrategyTest extends TestCase
+{
+    public function test_both_empty_strings_score_100() : void
+    {
+        self::assertSame(100.0, (new LongestCommonSubstringStrategy())->similarity('', ''));
+    }
+
+    public function test_common_prefix_with_different_suffix() : void
+    {
+        $strategy = new LongestCommonSubstringStrategy();
+
+        $withSuffix = $strategy->similarity('user_email_old', 'user_email');
+        $noOverlap = $strategy->similarity('user_email_old', 'total_amount');
+
+        self::assertGreaterThan($noOverlap, $withSuffix);
+    }
+
+    public function test_custom_threshold() : void
+    {
+        self::assertSame(75.0, (new LongestCommonSubstringStrategy(75.0))->threshold());
+    }
+
+    public function test_default_threshold_is_50() : void
+    {
+        self::assertSame(50.0, (new LongestCommonSubstringStrategy())->threshold());
+    }
+
+    public function test_identical_names_score_100() : void
+    {
+        self::assertSame(100.0, (new LongestCommonSubstringStrategy())->similarity('column_name', 'column_name'));
+    }
+
+    public function test_no_common_characters_scores_0() : void
+    {
+        self::assertSame(0.0, (new LongestCommonSubstringStrategy())->similarity('abc', 'xyz'));
+    }
+
+    public function test_one_empty_string_scores_0() : void
+    {
+        self::assertSame(0.0, (new LongestCommonSubstringStrategy())->similarity('', 'something'));
+    }
+
+    public function test_realistic_column_rename_suffix_removed() : void
+    {
+        self::assertEqualsWithDelta(70.0, (new LongestCommonSubstringStrategy())->similarity('net_commission_cents', 'net_commission'), 0.01);
+    }
+
+    public function test_reversed_single_chars_share_one_character_substring() : void
+    {
+        self::assertSame(50.0, (new LongestCommonSubstringStrategy())->similarity('ax', 'xa'));
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/MaterializedViewDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/MaterializedViewDiffTest.php
new file mode 100644
index 0000000000..cd59b03870
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/MaterializedViewDiffTest.php
@@ -0,0 +1,184 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{col, eq, literal, schema_index, schema_materialized_view, select, star, table};
+
+use Flow\PostgreSql\Schema\Diff\MaterializedViewDiff;
+
+use Flow\PostgreSql\Schema\IndexMethod;
+use PHPUnit\Framework\TestCase;
+
+final class MaterializedViewDiffTest extends TestCase
+{
+    public function test_adds_and_drops_indexes_without_definition_change() : void
+    {
+        $definition = select(star())->from(table('users'))->toSql();
+
+        $diff = new MaterializedViewDiff(
+            schema_materialized_view('mv_users', $definition),
+            schema_materialized_view('mv_users', $definition),
+            addedIndexes: [schema_index('idx_email', ['email'])],
+            removedIndexes: [schema_index('idx_name', ['name'])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('DROP INDEX idx_name', $sqls[0]->toSql());
+        self::assertSame('CREATE INDEX idx_email ON mv_users (email)', $sqls[1]->toSql());
+    }
+
+    public function test_adds_gin_index_without_definition_change() : void
+    {
+        $source = schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql());
+        $target = schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql());
+
+        $diff = new MaterializedViewDiff(
+            $source,
+            $target,
+            addedIndexes: [schema_index('idx_data', ['data'], method: IndexMethod::GIN)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE INDEX idx_data ON mv_users USING gin (data)', $sqls[0]->toSql());
+    }
+
+    public function test_adds_index() : void
+    {
+        $definition = select(star())->from(table('users'))->toSql();
+
+        $diff = new MaterializedViewDiff(
+            schema_materialized_view('mv_users', $definition),
+            schema_materialized_view('mv_users', $definition),
+            addedIndexes: [schema_index('idx_email', ['email'])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE INDEX idx_email ON mv_users (email)', $sqls[0]->toSql());
+    }
+
+    public function test_adds_unique_index_without_definition_change() : void
+    {
+        $source = schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql());
+        $target = schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql());
+
+        $diff = new MaterializedViewDiff(
+            $source,
+            $target,
+            addedIndexes: [schema_index('idx_unique_email', ['email'], unique: true)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE UNIQUE INDEX idx_unique_email ON mv_users (email)', $sqls[0]->toSql());
+    }
+
+    public function test_drops_index() : void
+    {
+        $definition = select(star())->from(table('users'))->toSql();
+
+        $diff = new MaterializedViewDiff(
+            schema_materialized_view('mv_users', $definition),
+            schema_materialized_view('mv_users', $definition),
+            removedIndexes: [schema_index('idx_email', ['email'])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP INDEX idx_email', $sqls[0]->toSql());
+    }
+
+    public function test_drops_source_indexes_before_recreating_when_definition_changed() : void
+    {
+        $sourceDefinition = select(star())->from(table('users'))->toSql();
+        $targetDefinition = select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql();
+
+        $diff = new MaterializedViewDiff(
+            schema_materialized_view('mv_users', $sourceDefinition, [schema_index('idx_name', ['name'])]),
+            schema_materialized_view('mv_users', $targetDefinition, [schema_index('idx_email', ['email'])]),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(4, $sqls);
+        self::assertSame('DROP INDEX idx_name', $sqls[0]->toSql());
+        self::assertSame('DROP MATERIALIZED VIEW mv_users', $sqls[1]->toSql());
+        self::assertSame('CREATE MATERIALIZED VIEW mv_users AS SELECT * FROM users WHERE active = true', $sqls[2]->toSql());
+        self::assertSame('CREATE INDEX idx_email ON mv_users (email)', $sqls[3]->toSql());
+    }
+
+    public function test_has_definition_changed_returns_false_when_same() : void
+    {
+        $diff = new MaterializedViewDiff(
+            schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+            schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+        );
+
+        self::assertFalse($diff->hasDefinitionChanged());
+    }
+
+    public function test_has_definition_changed_returns_true_when_different() : void
+    {
+        $diff = new MaterializedViewDiff(
+            schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+            schema_materialized_view('mv_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()),
+        );
+
+        self::assertTrue($diff->hasDefinitionChanged());
+    }
+
+    public function test_recreates_when_definition_changed() : void
+    {
+        $diff = new MaterializedViewDiff(
+            schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+            schema_materialized_view('mv_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('DROP MATERIALIZED VIEW mv_users', $sqls[0]->toSql());
+        self::assertSame('CREATE MATERIALIZED VIEW mv_users AS SELECT * FROM users WHERE active = true', $sqls[1]->toSql());
+    }
+
+    public function test_reversed_definition_change() : void
+    {
+        $diff = new MaterializedViewDiff(
+            schema_materialized_view('mv_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()),
+            schema_materialized_view('mv_users', select(star())->from(table('users'))->toSql()),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('DROP MATERIALIZED VIEW mv_users', $sqls[0]->toSql());
+        self::assertSame('CREATE MATERIALIZED VIEW mv_users AS SELECT * FROM users', $sqls[1]->toSql());
+    }
+
+    public function test_reversed_index_only_changes() : void
+    {
+        $definition = select(star())->from(table('users'))->toSql();
+
+        $diff = new MaterializedViewDiff(
+            schema_materialized_view('mv_users', $definition),
+            schema_materialized_view('mv_users', $definition),
+            addedIndexes: [schema_index('idx_name', ['name'])],
+            removedIndexes: [schema_index('idx_email', ['email'])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('DROP INDEX idx_email', $sqls[0]->toSql());
+        self::assertSame('CREATE INDEX idx_name ON mv_users (name)', $sqls[1]->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/NoRenameStrategyTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/NoRenameStrategyTest.php
new file mode 100644
index 0000000000..f63e6728b7
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/NoRenameStrategyTest.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Diff\{NoRenameStrategy, RenameCandidate};
+use PHPUnit\Framework\TestCase;
+
+final class NoRenameStrategyTest extends TestCase
+{
+    public function test_always_returns_empty() : void
+    {
+        $strategy = new NoRenameStrategy();
+
+        self::assertSame([], $strategy->resolve([
+            new RenameCandidate('full_name', 'name'),
+        ]));
+    }
+
+    public function test_empty_candidates_returns_empty() : void
+    {
+        $strategy = new NoRenameStrategy();
+
+        self::assertSame([], $strategy->resolve([]));
+    }
+
+    public function test_multiple_candidates_returns_empty() : void
+    {
+        $strategy = new NoRenameStrategy();
+
+        self::assertSame([], $strategy->resolve([
+            new RenameCandidate('col_a', 'col_x'),
+            new RenameCandidate('col_b', 'col_y'),
+        ]));
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/NoSimilarityStrategyTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/NoSimilarityStrategyTest.php
new file mode 100644
index 0000000000..3eded71638
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/NoSimilarityStrategyTest.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Diff\NoSimilarityStrategy;
+use PHPUnit\Framework\TestCase;
+
+final class NoSimilarityStrategyTest extends TestCase
+{
+    public function test_always_returns_zero() : void
+    {
+        $strategy = new NoSimilarityStrategy();
+
+        self::assertSame(0.0, $strategy->similarity('column_name', 'column_name'));
+    }
+
+    public function test_returns_zero_for_different_names() : void
+    {
+        $strategy = new NoSimilarityStrategy();
+
+        self::assertSame(0.0, $strategy->similarity('foo', 'bar'));
+    }
+
+    public function test_returns_zero_for_empty_strings() : void
+    {
+        $strategy = new NoSimilarityStrategy();
+
+        self::assertSame(0.0, $strategy->similarity('', ''));
+    }
+
+    public function test_threshold_is_100() : void
+    {
+        $strategy = new NoSimilarityStrategy();
+
+        self::assertSame(100.0, $strategy->threshold());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ProcedureDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ProcedureDiffTest.php
new file mode 100644
index 0000000000..3e5000ecf7
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ProcedureDiffTest.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\schema_procedure;
+
+use Flow\PostgreSql\Schema\Diff\ProcedureDiff;
+use PHPUnit\Framework\TestCase;
+
+final class ProcedureDiffTest extends TestCase
+{
+    public function test_generates_create_or_replace_procedure() : void
+    {
+        $diff = new ProcedureDiff(
+            schema_procedure('cleanup', ['integer'], 'sql', 'DELETE FROM logs WHERE id = $1'),
+            schema_procedure('cleanup', ['integer'], 'plpgsql', 'BEGIN DELETE FROM logs WHERE id = $1; END'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE OR REPLACE PROCEDURE cleanup(IN int) LANGUAGE plpgsql AS $$BEGIN DELETE FROM logs WHERE id = $1; END$$',
+            $sqls[0]->toSql()
+        );
+    }
+
+    public function test_returns_empty_when_definition_null() : void
+    {
+        $diff = new ProcedureDiff(
+            schema_procedure('cleanup', ['integer'], 'sql', 'DELETE FROM logs WHERE id = $1'),
+            schema_procedure('cleanup', ['integer'], 'plpgsql'),
+        );
+
+        self::assertSame([], $diff->generate());
+    }
+
+    public function test_reversed_procedure_definition_change() : void
+    {
+        $diff = new ProcedureDiff(
+            schema_procedure('cleanup', ['integer'], 'plpgsql', 'BEGIN DELETE FROM logs WHERE id = $1; END'),
+            schema_procedure('cleanup', ['integer'], 'sql', 'DELETE FROM logs WHERE id = $1'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE OR REPLACE PROCEDURE cleanup(IN int) LANGUAGE sql AS $$DELETE FROM logs WHERE id = $1$$',
+            $sqls[0]->toSql()
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SchemaComparatorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SchemaComparatorTest.php
new file mode 100644
index 0000000000..3e3fc2cb26
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SchemaComparatorTest.php
@@ -0,0 +1,890 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{schema_column_integer, schema_column_text, schema_domain, schema_extension, schema_function, schema_index, schema_materialized_view, schema_primary_key, schema_procedure, schema_sequence, schema_table, schema_view};
+
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\Schema\Constraint\CheckConstraint;
+use Flow\PostgreSql\Schema\Diff\{ConstraintComparator, GreedySimilarityRenameStrategy, IndexComparator, SchemaComparator, SimilarTextStrategy, TableComparator, TableStructureComparator};
+use Flow\PostgreSql\Schema\{FunctionVolatility, PartitionStrategy, Schema};
+use PHPUnit\Framework\TestCase;
+
+final class SchemaComparatorTest extends TestCase
+{
+    public function test_domain_added() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public');
+        $target = new Schema('public', domains: [schema_domain('email', ColumnType::text())]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedDomains);
+    }
+
+    public function test_domain_modified_base_type() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', domains: [schema_domain('d1', ColumnType::text())]);
+        $target = new Schema('public', domains: [schema_domain('d1', ColumnType::varchar(255))]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedDomains);
+    }
+
+    public function test_domain_modified_check_constraint() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', domains: [schema_domain('d1', ColumnType::text(), checkConstraints: [
+            new CheckConstraint('VALUE ~ \'^[a-z]+$\'', 'chk_lower'),
+        ])]);
+        $target = new Schema('public', domains: [schema_domain('d1', ColumnType::text(), checkConstraints: [
+            new CheckConstraint('VALUE ~ \'^[A-Z]+$\'', 'chk_lower'),
+        ])]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedDomains);
+    }
+
+    public function test_domain_modified_default() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', domains: [schema_domain('d1', ColumnType::text(), default: null)]);
+        $target = new Schema('public', domains: [schema_domain('d1', ColumnType::text(), default: "'hello'")]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedDomains);
+    }
+
+    public function test_domain_modified_nullable() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', domains: [schema_domain('d1', ColumnType::text(), nullable: true)]);
+        $target = new Schema('public', domains: [schema_domain('d1', ColumnType::text(), nullable: false)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedDomains);
+    }
+
+    public function test_domain_removed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', domains: [schema_domain('email', ColumnType::text())]);
+        $target = new Schema('public');
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedDomains);
+    }
+
+    public function test_extension_added() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public');
+        $target = new Schema('public', extensions: [schema_extension('uuid-ossp')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedExtensions);
+    }
+
+    public function test_extension_modified_version() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', extensions: [schema_extension('uuid-ossp', version: '1.0')]);
+        $target = new Schema('public', extensions: [schema_extension('uuid-ossp', version: '2.0')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedExtensions);
+    }
+
+    public function test_extension_removed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', extensions: [schema_extension('uuid-ossp')]);
+        $target = new Schema('public');
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedExtensions);
+    }
+
+    public function test_function_added() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public');
+        $target = new Schema('public', functions: [schema_function('add', 'integer', ['integer', 'integer'], definition: 'SELECT $1 + $2')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedFunctions);
+    }
+
+    public function test_function_modified_argument_types() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', functions: [schema_function('fn', 'integer', ['integer'])]);
+        $target = new Schema('public', functions: [schema_function('fn', 'integer', ['text'])]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedFunctions);
+    }
+
+    public function test_function_modified_definition() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', functions: [schema_function('fn', 'integer', definition: 'SELECT 1')]);
+        $target = new Schema('public', functions: [schema_function('fn', 'integer', definition: 'SELECT 2')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedFunctions);
+    }
+
+    public function test_function_modified_is_strict() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', functions: [schema_function('fn', 'integer', isStrict: false)]);
+        $target = new Schema('public', functions: [schema_function('fn', 'integer', isStrict: true)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedFunctions);
+    }
+
+    public function test_function_modified_language() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', functions: [schema_function('fn', 'integer', language: 'sql')]);
+        $target = new Schema('public', functions: [schema_function('fn', 'integer', language: 'plpgsql')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedFunctions);
+    }
+
+    public function test_function_modified_return_type() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', functions: [schema_function('fn', 'integer')]);
+        $target = new Schema('public', functions: [schema_function('fn', 'bigint')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedFunctions);
+    }
+
+    public function test_function_modified_volatility() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', functions: [schema_function('fn', 'integer', volatility: FunctionVolatility::VOLATILE)]);
+        $target = new Schema('public', functions: [schema_function('fn', 'integer', volatility: FunctionVolatility::STABLE)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedFunctions);
+    }
+
+    public function test_function_removed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', functions: [schema_function('add', 'integer', ['integer', 'integer'], definition: 'SELECT $1 + $2')]);
+        $target = new Schema('public');
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedFunctions);
+    }
+
+    public function test_identical_schemas_produce_empty_diff() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $schema = new Schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', false)]),
+        ]);
+
+        $diff = $comparator->compare($schema, $schema);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_materialized_view_added() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public');
+        $target = new Schema('public', materializedViews: [schema_materialized_view('mv_users', 'SELECT * FROM users')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedMaterializedViews);
+    }
+
+    public function test_materialized_view_modified_definition() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', materializedViews: [schema_materialized_view('mv_users', 'SELECT * FROM users')]);
+        $target = new Schema('public', materializedViews: [schema_materialized_view('mv_users', 'SELECT id FROM users')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedMaterializedViews);
+    }
+
+    public function test_materialized_view_modified_index() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', materializedViews: [schema_materialized_view('mv_users', 'SELECT * FROM users')]);
+        $target = new Schema('public', materializedViews: [schema_materialized_view('mv_users', 'SELECT * FROM users', indexes: [
+            schema_index('idx_mv_id', ['id']),
+        ])]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedMaterializedViews);
+    }
+
+    public function test_materialized_view_removed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', materializedViews: [schema_materialized_view('mv_users', 'SELECT * FROM users')]);
+        $target = new Schema('public');
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedMaterializedViews);
+    }
+
+    public function test_procedure_added() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public');
+        $target = new Schema('public', procedures: [schema_procedure('do_stuff')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedProcedures);
+    }
+
+    public function test_procedure_modified_argument_types() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', procedures: [schema_procedure('do_stuff', argumentTypes: ['integer'])]);
+        $target = new Schema('public', procedures: [schema_procedure('do_stuff', argumentTypes: ['text'])]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedProcedures);
+    }
+
+    public function test_procedure_modified_definition() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', procedures: [schema_procedure('do_stuff', definition: 'BEGIN END')]);
+        $target = new Schema('public', procedures: [schema_procedure('do_stuff', definition: 'BEGIN RAISE NOTICE; END')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedProcedures);
+    }
+
+    public function test_procedure_modified_language() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', procedures: [schema_procedure('do_stuff', language: 'sql')]);
+        $target = new Schema('public', procedures: [schema_procedure('do_stuff', language: 'plpgsql')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedProcedures);
+    }
+
+    public function test_procedure_removed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', procedures: [schema_procedure('do_stuff')]);
+        $target = new Schema('public');
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedProcedures);
+    }
+
+    public function test_sequence_added() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public');
+        $target = new Schema('public', sequences: [schema_sequence('users_id_seq')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedSequences);
+        self::assertSame('users_id_seq', $diff->addedSequences[0]->name);
+    }
+
+    public function test_sequence_modified_cache_value() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('s1', cacheValue: 1)]);
+        $target = new Schema('public', sequences: [schema_sequence('s1', cacheValue: 20)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSequences);
+    }
+
+    public function test_sequence_modified_cycle() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('s1', cycle: false)]);
+        $target = new Schema('public', sequences: [schema_sequence('s1', cycle: true)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSequences);
+    }
+
+    public function test_sequence_modified_data_type() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('s1', dataType: 'bigint')]);
+        $target = new Schema('public', sequences: [schema_sequence('s1', dataType: 'integer')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSequences);
+    }
+
+    public function test_sequence_modified_increment_by() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('s1', incrementBy: 1)]);
+        $target = new Schema('public', sequences: [schema_sequence('s1', incrementBy: 5)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSequences);
+    }
+
+    public function test_sequence_modified_max_value() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('s1', maxValue: null)]);
+        $target = new Schema('public', sequences: [schema_sequence('s1', maxValue: 999)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSequences);
+    }
+
+    public function test_sequence_modified_min_value() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('s1', minValue: 1)]);
+        $target = new Schema('public', sequences: [schema_sequence('s1', minValue: 10)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSequences);
+    }
+
+    public function test_sequence_modified_owned_by_column() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('s1', ownedByColumn: null)]);
+        $target = new Schema('public', sequences: [schema_sequence('s1', ownedByColumn: 'id')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSequences);
+    }
+
+    public function test_sequence_modified_owned_by_table() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('s1', ownedByTable: null)]);
+        $target = new Schema('public', sequences: [schema_sequence('s1', ownedByTable: 'users')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSequences);
+    }
+
+    public function test_sequence_modified_start_value() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('s1', startValue: 1)]);
+        $target = new Schema('public', sequences: [schema_sequence('s1', startValue: 100)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedSequences);
+    }
+
+    public function test_sequence_removed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', sequences: [schema_sequence('users_id_seq')]);
+        $target = new Schema('public');
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedSequences);
+    }
+
+    public function test_table_added() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public');
+        $target = new Schema('public', tables: [schema_table('users', [schema_column_integer('id', false)])]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedTables);
+        self::assertSame('users', $diff->addedTables[0]->name);
+    }
+
+    public function test_table_inherits_changed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', tables: [schema_table('employees', [schema_column_integer('id', false)])]);
+        $target = new Schema('public', tables: [schema_table('employees', [schema_column_integer('id', false)], inherits: ['persons'])]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedTables);
+        self::assertSame(['persons'], $diff->modifiedTables[0]->addedInherits);
+        self::assertSame([], $diff->modifiedTables[0]->removedInherits);
+    }
+
+    public function test_table_modified() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', tables: [schema_table('users', [schema_column_integer('id', false)])]);
+        $target = new Schema('public', tables: [schema_table('users', [schema_column_integer('id', false), schema_column_text('email')])]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedTables);
+    }
+
+    public function test_table_partition_changed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', tables: [schema_table('events', [schema_column_integer('id', false)])]);
+        $target = new Schema('public', tables: [schema_table('events', [schema_column_integer('id', false)], partitionStrategy: PartitionStrategy::RANGE, partitionColumns: ['id'])]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedTables);
+        self::assertTrue($diff->modifiedTables[0]->partitionChanged);
+    }
+
+    public function test_table_removed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', tables: [schema_table('users', [schema_column_integer('id', false)])]);
+        $target = new Schema('public');
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedTables);
+        self::assertSame('users', $diff->removedTables[0]->name);
+    }
+
+    public function test_table_rename_populates_schema_diff() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', tables: [
+            schema_table('old_users', [schema_column_integer('id', false), schema_column_text('name')], schema_primary_key(['id'])),
+        ]);
+        $target = new Schema('public', tables: [
+            schema_table('new_users', [schema_column_integer('id', false), schema_column_text('name')], schema_primary_key(['id'])),
+        ]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(0, $diff->addedTables);
+        self::assertCount(0, $diff->removedTables);
+        self::assertCount(1, $diff->renamedTables);
+        self::assertArrayHasKey('public.old_users', $diff->renamedTables);
+        self::assertSame('new_users', $diff->renamedTables['public.old_users']->name);
+    }
+
+    public function test_table_tablespace_changed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', tables: [schema_table('users', [schema_column_integer('id', false)])]);
+        $target = new Schema('public', tables: [schema_table('users', [schema_column_integer('id', false)], tablespace: 'fast_storage')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedTables);
+        self::assertTrue($diff->modifiedTables[0]->tablespaceChanged);
+    }
+
+    public function test_table_unlogged_changed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', tables: [schema_table('users', [schema_column_integer('id', false)])]);
+        $target = new Schema('public', tables: [schema_table('users', [schema_column_integer('id', false)], unlogged: true)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedTables);
+        self::assertTrue($diff->modifiedTables[0]->unloggedChanged);
+    }
+
+    public function test_view_added() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public');
+        $target = new Schema('public', views: [schema_view('v_users', 'SELECT * FROM users')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedViews);
+        self::assertSame('v_users', $diff->addedViews[0]->name);
+    }
+
+    public function test_view_modified_definition() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', views: [schema_view('v_users', 'SELECT * FROM users')]);
+        $target = new Schema('public', views: [schema_view('v_users', 'SELECT id FROM users')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedViews);
+    }
+
+    public function test_view_modified_is_updatable() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', views: [schema_view('v_users', 'SELECT * FROM users', isUpdatable: false)]);
+        $target = new Schema('public', views: [schema_view('v_users', 'SELECT * FROM users', isUpdatable: true)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedViews);
+    }
+
+    public function test_view_removed() : void
+    {
+        $constraintComparator = new ConstraintComparator();
+        $comparator = new SchemaComparator(
+            new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), $constraintComparator, new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+            $constraintComparator,
+            new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())),
+        );
+        $source = new Schema('public', views: [schema_view('v_users', 'SELECT * FROM users')]);
+        $target = new Schema('public');
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedViews);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SchemaDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SchemaDiffTest.php
new file mode 100644
index 0000000000..171848cdbc
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SchemaDiffTest.php
@@ -0,0 +1,527 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{literal, schema, schema_column_integer, schema_column_text, schema_domain, schema_extension, schema_function, schema_materialized_view, schema_procedure, schema_sequence, schema_table, schema_view, select};
+
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\Schema\{Column, Domain};
+use Flow\PostgreSql\Schema\Diff\{SchemaDiff, SequenceDiff, TableDiff};
+use PHPUnit\Framework\TestCase;
+
+final class SchemaDiffTest extends TestCase
+{
+    public function test_creates_added_domain() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedDomains: [schema_domain('email', ColumnType::text(), nullable: false)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE DOMAIN email AS pg_catalog.text NOT NULL', $sqls[0]->toSql());
+    }
+
+    public function test_creates_added_extension() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedExtensions: [schema_extension('uuid-ossp')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE EXTENSION "uuid-ossp"', $sqls[0]->toSql());
+    }
+
+    public function test_creates_added_function() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedFunctions: [schema_function('my_func', 'text', ['integer'], 'sql', 'SELECT name FROM users WHERE id = $1')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE OR REPLACE FUNCTION my_func(IN int) RETURNS text LANGUAGE sql AS $$SELECT name FROM users WHERE id = $1$$', $sqls[0]->toSql());
+    }
+
+    public function test_creates_added_sequence() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedSequences: [schema_sequence('users_id_seq')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE SEQUENCE users_id_seq AS bigint START 1 INCREMENT 1 MINVALUE 1 CACHE 1 NO MAXVALUE', $sqls[0]->toSql());
+    }
+
+    public function test_creates_added_table() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            [schema_table('users', [schema_column_integer('id', false), schema_column_text('name')])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE TABLE public.users (id int NOT NULL, name pg_catalog.text)', $sqls[0]->toSql());
+    }
+
+    public function test_creates_added_view() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedViews: [schema_view('active_users', 'SELECT * FROM users WHERE active = true')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE VIEW active_users AS SELECT * FROM users WHERE active = true', $sqls[0]->toSql());
+    }
+
+    public function test_delegates_to_table_diff() : void
+    {
+        $s = schema('public');
+        $sourceTable = schema_table('users', [schema_column_integer('id', false)]);
+        $targetTable = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+
+        $tableDiff = new TableDiff(
+            $sourceTable,
+            $targetTable,
+            [new Column('name', ColumnType::text(), true)],
+        );
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            modifiedTables: [$tableDiff],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ADD COLUMN name pg_catalog.text', $sqls[0]->toSql());
+    }
+
+    public function test_dependency_order() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedTables: [schema_table('users', [schema_column_integer('id', false)])],
+            removedViews: [schema_view('active_users', 'SELECT * FROM users WHERE active = true')],
+            addedExtensions: [schema_extension('uuid-ossp')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(3, $sqls);
+        self::assertSame('CREATE EXTENSION "uuid-ossp"', $sqls[0]->toSql());
+        self::assertSame('CREATE TABLE public.users (id int NOT NULL)', $sqls[1]->toSql());
+        self::assertSame('DROP VIEW active_users', $sqls[2]->toSql());
+    }
+
+    public function test_drops_all_removed_object_types() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedTables: [schema_table('users', [schema_column_integer('id', false)])],
+            removedSequences: [schema_sequence('users_id_seq')],
+            removedViews: [schema_view('active_users', select(literal(1))->toSql())],
+            removedMaterializedViews: [schema_materialized_view('mv_stats', select(literal(1))->toSql())],
+            removedFunctions: [schema_function('my_func', 'text')],
+            removedProcedures: [schema_procedure('cleanup')],
+            removedDomains: [schema_domain('email', ColumnType::text())],
+            removedExtensions: [schema_extension('pgcrypto')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertSame('DROP MATERIALIZED VIEW mv_stats', $sqls[0]->toSql());
+        self::assertSame('DROP VIEW active_users', $sqls[1]->toSql());
+        self::assertSame('DROP TABLE public.users CASCADE', $sqls[2]->toSql());
+        self::assertSame('DROP PROCEDURE cleanup', $sqls[3]->toSql());
+        self::assertSame('DROP FUNCTION my_func', $sqls[4]->toSql());
+        self::assertSame('DROP SEQUENCE users_id_seq', $sqls[5]->toSql());
+        self::assertSame('DROP DOMAIN email CASCADE', $sqls[6]->toSql());
+        self::assertSame('DROP EXTENSION pgcrypto', $sqls[7]->toSql());
+        self::assertCount(8, $sqls);
+    }
+
+    public function test_drops_removed_domain() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedDomains: [schema_domain('email', ColumnType::text())],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP DOMAIN email CASCADE', $sqls[0]->toSql());
+    }
+
+    public function test_drops_removed_extension() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedExtensions: [schema_extension('uuid-ossp')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP EXTENSION "uuid-ossp"', $sqls[0]->toSql());
+    }
+
+    public function test_drops_removed_function() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedFunctions: [schema_function('my_func', 'text')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP FUNCTION my_func', $sqls[0]->toSql());
+    }
+
+    public function test_drops_removed_materialized_view() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedMaterializedViews: [schema_materialized_view('mv_stats', select(literal(1))->toSql())],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP MATERIALIZED VIEW mv_stats', $sqls[0]->toSql());
+    }
+
+    public function test_drops_removed_procedure() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedProcedures: [schema_procedure('cleanup')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP PROCEDURE cleanup', $sqls[0]->toSql());
+    }
+
+    public function test_drops_removed_sequence() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedSequences: [schema_sequence('users_id_seq')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP SEQUENCE users_id_seq', $sqls[0]->toSql());
+    }
+
+    public function test_drops_removed_table() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedTables: [schema_table('users', [schema_column_integer('id', false)])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP TABLE public.users CASCADE', $sqls[0]->toSql());
+    }
+
+    public function test_drops_removed_view() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedViews: [schema_view('active_users', 'SELECT * FROM users WHERE active = true')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP VIEW active_users', $sqls[0]->toSql());
+    }
+
+    public function test_is_empty_when_all_arrays_empty() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff($s, $s);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_added_domains() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedDomains: [new Domain('email', ColumnType::text())],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_added_extensions() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedExtensions: [schema_extension('uuid-ossp')],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_added_functions() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedFunctions: [schema_function('f', 'void')],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_added_procedures() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedProcedures: [schema_procedure('p')],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_added_tables() : void
+    {
+        $s = schema('public');
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            [$table],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_added_views() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            addedViews: [schema_view('v', select(literal(1))->toSql())],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_modified_sequences() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            modifiedSequences: [new SequenceDiff(schema_sequence('s1'), schema_sequence('s1', incrementBy: 5))],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_removed_extensions() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedExtensions: [schema_extension('uuid-ossp')],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_removed_materialized_views() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedMaterializedViews: [schema_materialized_view('mv', select(literal(1))->toSql())],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_removed_tables() : void
+    {
+        $s = schema('public');
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedTables: [$table],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_is_not_empty_when_renamed_tables() : void
+    {
+        $s = schema('public');
+        $table = schema_table('new_users', [schema_column_integer('id', false)]);
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            renamedTables: ['public.old_users' => $table],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_renames_table() : void
+    {
+        $s = schema('public');
+        $table = schema_table('new_users', [schema_column_integer('id', false)]);
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            renamedTables: ['public.old_users' => $table],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.old_users RENAME TO new_users', $sqls[0]->toSql());
+    }
+
+    public function test_returns_empty_when_no_changes() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff($s, $s);
+
+        self::assertSame([], $diff->generate());
+    }
+
+    public function test_reversed_added_table() : void
+    {
+        $s = schema('public');
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            removedTables: [schema_table('users', [schema_column_integer('id', false), schema_column_text('name')])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP TABLE public.users CASCADE', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_table_rename() : void
+    {
+        $s = schema('public');
+        $table = schema_table('old_users', [schema_column_integer('id', false)]);
+
+        $diff = new SchemaDiff(
+            $s,
+            $s,
+            renamedTables: ['public.new_users' => $table],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.new_users RENAME TO old_users', $sqls[0]->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SequenceDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SequenceDiffTest.php
new file mode 100644
index 0000000000..f433d3bd10
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SequenceDiffTest.php
@@ -0,0 +1,173 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\schema_sequence;
+
+use Flow\PostgreSql\Schema\Diff\SequenceDiff;
+use PHPUnit\Framework\TestCase;
+
+final class SequenceDiffTest extends TestCase
+{
+    protected function setUp() : void
+    {
+        if (!\extension_loaded('pg_query')) {
+            self::markTestSkipped('pg_query extension is not loaded.');
+        }
+    }
+
+    public function test_generates_alter_cache_value() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq', cacheValue: 1),
+            schema_sequence('users_id_seq', cacheValue: 20),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq CACHE 20', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_cycle_to_no_cycle() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq', cycle: true),
+            schema_sequence('users_id_seq', cycle: false),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq NO CYCLE', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_data_type() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq', dataType: 'bigint'),
+            schema_sequence('users_id_seq', dataType: 'integer'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq AS int', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_increment_by() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq'),
+            schema_sequence('users_id_seq', incrementBy: 10),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq INCREMENT 10', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_min_value() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq', minValue: 1),
+            schema_sequence('users_id_seq', minValue: 50),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq MINVALUE 50', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_multiple_properties() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq'),
+            schema_sequence('users_id_seq', incrementBy: 10, cycle: true, maxValue: 1000),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq INCREMENT 10 MAXVALUE 1000 CYCLE', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_no_max_value() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq', maxValue: 1000),
+            schema_sequence('users_id_seq', maxValue: null),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq NO MAXVALUE', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_owned_by() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq'),
+            schema_sequence('users_id_seq', ownedByTable: 'users', ownedByColumn: 'id'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq OWNED BY users.id', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_owned_by_none() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq', ownedByTable: 'users', ownedByColumn: 'id'),
+            schema_sequence('users_id_seq'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq OWNED BY "none"', $sqls[0]->toSql());
+    }
+
+    public function test_generates_alter_start_value() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq', startValue: 1),
+            schema_sequence('users_id_seq', startValue: 100),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq START 100', $sqls[0]->toSql());
+    }
+
+    public function test_returns_empty_when_no_changes() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq'),
+            schema_sequence('users_id_seq'),
+        );
+
+        self::assertSame([], $diff->generate());
+    }
+
+    public function test_reversed_increment_change() : void
+    {
+        $diff = new SequenceDiff(
+            schema_sequence('users_id_seq', incrementBy: 10),
+            schema_sequence('users_id_seq', incrementBy: 1),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER SEQUENCE users_id_seq INCREMENT 1', $sqls[0]->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SimilarTextStrategyTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SimilarTextStrategyTest.php
new file mode 100644
index 0000000000..d41e0988ea
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/SimilarTextStrategyTest.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Diff\SimilarTextStrategy;
+use PHPUnit\Framework\TestCase;
+
+final class SimilarTextStrategyTest extends TestCase
+{
+    public function test_custom_threshold() : void
+    {
+        self::assertSame(75.0, (new SimilarTextStrategy(75.0))->threshold());
+    }
+
+    public function test_default_threshold_is_50() : void
+    {
+        self::assertSame(50.0, (new SimilarTextStrategy())->threshold());
+    }
+
+    public function test_empty_strings_score_0() : void
+    {
+        self::assertSame(0.0, (new SimilarTextStrategy())->similarity('', ''));
+    }
+
+    public function test_identical_names_score_100() : void
+    {
+        self::assertSame(100.0, (new SimilarTextStrategy())->similarity('column_name', 'column_name'));
+    }
+
+    public function test_partial_overlap_scores_between_50_and_100() : void
+    {
+        self::assertEqualsWithDelta(66.67, (new SimilarTextStrategy())->similarity('last_name', 'full_name'), 0.01);
+    }
+
+    public function test_realistic_column_rename_scores_above_80() : void
+    {
+        self::assertEqualsWithDelta(82.35, (new SimilarTextStrategy())->similarity('net_commission_cents', 'net_commission'), 0.01);
+    }
+
+    public function test_strategies_rank_correctly_for_ambiguous_commission_columns() : void
+    {
+        $strategy = new SimilarTextStrategy();
+
+        $bestMatch = $strategy->similarity('net_commission_cents', 'net_commission');
+        $crossMatch = $strategy->similarity('net_commission_cents', 'total_commission');
+
+        self::assertGreaterThan($crossMatch, $bestMatch);
+    }
+
+    public function test_unrelated_names_score_below_threshold() : void
+    {
+        self::assertEqualsWithDelta(7.41, (new SimilarTextStrategy())->similarity('foo', 'xyz_completely_different'), 0.01);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/StrictRenameStrategyTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/StrictRenameStrategyTest.php
new file mode 100644
index 0000000000..68cb456d14
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/StrictRenameStrategyTest.php
@@ -0,0 +1,112 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use Flow\PostgreSql\Schema\Diff\{RenameCandidate, StrictRenameStrategy};
+use PHPUnit\Framework\TestCase;
+
+final class StrictRenameStrategyTest extends TestCase
+{
+    public function test_ambiguous_candidates_not_matched() : void
+    {
+        $strategy = new StrictRenameStrategy();
+
+        $result = $strategy->resolve([
+            new RenameCandidate('net_commission', 'net_commission_cents'),
+            new RenameCandidate('net_commission', 'total_commission_cents'),
+        ]);
+
+        self::assertSame([], $result);
+    }
+
+    public function test_empty_candidates_returns_empty() : void
+    {
+        $strategy = new StrictRenameStrategy();
+
+        self::assertSame([], $strategy->resolve([]));
+    }
+
+    public function test_mixed_ambiguous_and_unambiguous() : void
+    {
+        $strategy = new StrictRenameStrategy();
+
+        $result = $strategy->resolve([
+            new RenameCandidate('unique_col', 'old_unique'),
+            new RenameCandidate('ambig_a', 'old_x'),
+            new RenameCandidate('ambig_a', 'old_y'),
+        ]);
+
+        self::assertCount(1, $result);
+        self::assertSame('unique_col', $result[0]->addedName);
+        self::assertSame('old_unique', $result[0]->removedName);
+    }
+
+    public function test_multiple_unambiguous_matches() : void
+    {
+        $strategy = new StrictRenameStrategy();
+
+        $result = $strategy->resolve([
+            new RenameCandidate('col_a', 'col_x'),
+            new RenameCandidate('col_b', 'col_y'),
+        ]);
+
+        self::assertCount(2, $result);
+    }
+
+    public function test_reverse_ambiguity_two_added_one_removed_candidate() : void
+    {
+        $strategy = new StrictRenameStrategy();
+
+        $result = $strategy->resolve([
+            new RenameCandidate('col_new_a', 'col_old'),
+            new RenameCandidate('col_new_b', 'col_old'),
+        ]);
+
+        self::assertCount(1, $result);
+        self::assertSame('col_new_a', $result[0]->addedName);
+        self::assertSame('col_old', $result[0]->removedName);
+    }
+
+    public function test_same_removed_matched_only_once() : void
+    {
+        $strategy = new StrictRenameStrategy();
+
+        $result = $strategy->resolve([
+            new RenameCandidate('col_a', 'col_shared'),
+            new RenameCandidate('col_b', 'col_shared'),
+        ]);
+
+        self::assertCount(1, $result);
+        self::assertSame('col_a', $result[0]->addedName);
+        self::assertSame('col_shared', $result[0]->removedName);
+    }
+
+    public function test_three_way_ambiguity_no_matches() : void
+    {
+        $strategy = new StrictRenameStrategy();
+
+        $result = $strategy->resolve([
+            new RenameCandidate('a', 'x'),
+            new RenameCandidate('a', 'y'),
+            new RenameCandidate('b', 'x'),
+            new RenameCandidate('b', 'y'),
+        ]);
+
+        self::assertSame([], $result);
+    }
+
+    public function test_unambiguous_single_match() : void
+    {
+        $strategy = new StrictRenameStrategy();
+
+        $result = $strategy->resolve([
+            new RenameCandidate('full_name', 'name'),
+        ]);
+
+        self::assertCount(1, $result);
+        self::assertSame('full_name', $result[0]->addedName);
+        self::assertSame('name', $result[0]->removedName);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/TableComparatorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/TableComparatorTest.php
new file mode 100644
index 0000000000..e9f376c2bb
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/TableComparatorTest.php
@@ -0,0 +1,308 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{schema_column, schema_column_integer, schema_column_text, schema_primary_key, schema_table, schema_trigger};
+
+use Flow\PostgreSql\QueryBuilder\Schema\ColumnType;
+use Flow\PostgreSql\Schema\Diff\{ConstraintComparator, GreedySimilarityRenameStrategy, IndexComparator, SimilarTextStrategy, TableComparator};
+use Flow\PostgreSql\Schema\{IdentityGeneration, TriggerEvent, TriggerTiming};
+use PHPUnit\Framework\TestCase;
+
+final class TableComparatorTest extends TestCase
+{
+    public function test_ambiguous_column_rename_resolved_by_similarity() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [
+            schema_column_integer('id', false),
+            schema_column_text('col_a'),
+            schema_column_text('col_b'),
+        ]);
+        $target = schema_table('users', [
+            schema_column_integer('id', false),
+            schema_column_text('col_c'),
+        ]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(0, $diff->addedColumns);
+        self::assertCount(1, $diff->removedColumns);
+        self::assertCount(1, $diff->modifiedColumns);
+        self::assertTrue($diff->modifiedColumns[0]->hasNameChanged());
+    }
+
+    public function test_column_added() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('email')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedColumns);
+        self::assertSame('email', $diff->addedColumns[0]->name);
+    }
+
+    public function test_column_default_changed() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column('status', ColumnType::text(), default: null)]);
+        $target = schema_table('users', [schema_column('status', ColumnType::text(), default: "'active'")]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedColumns);
+        self::assertTrue($diff->modifiedColumns[0]->hasDefaultChanged());
+    }
+
+    public function test_column_generation_changed() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column('full_name', ColumnType::text(), isGenerated: false)]);
+        $target = schema_table('users', [schema_column('full_name', ColumnType::text(), isGenerated: true, generationExpression: "first_name || ' ' || last_name")]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedColumns);
+        self::assertTrue($diff->modifiedColumns[0]->hasGenerationChanged());
+    }
+
+    public function test_column_identity_changed() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column('id', ColumnType::integer(), nullable: false, isIdentity: false)]);
+        $target = schema_table('users', [schema_column('id', ColumnType::integer(), nullable: false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedColumns);
+        self::assertTrue($diff->modifiedColumns[0]->hasIdentityChanged());
+    }
+
+    public function test_column_nullable_changed() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column('email', ColumnType::text(), nullable: true)]);
+        $target = schema_table('users', [schema_column('email', ColumnType::text(), nullable: false)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedColumns);
+        self::assertTrue($diff->modifiedColumns[0]->hasNullableChanged());
+    }
+
+    public function test_column_removed() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_text('email')]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedColumns);
+        self::assertSame('email', $diff->removedColumns[0]->name);
+    }
+
+    public function test_column_rename_detected() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_text('email')]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('mail')]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertSame([], $diff->addedColumns);
+        self::assertSame([], $diff->removedColumns);
+        self::assertCount(1, $diff->modifiedColumns);
+        self::assertTrue($diff->modifiedColumns[0]->hasNameChanged());
+        self::assertSame('email', $diff->modifiedColumns[0]->source->name);
+        self::assertSame('mail', $diff->modifiedColumns[0]->target->name);
+    }
+
+    public function test_column_type_changed() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column('email', ColumnType::text())]);
+        $target = schema_table('users', [schema_column('email', ColumnType::varchar(255))]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->modifiedColumns);
+        self::assertTrue($diff->modifiedColumns[0]->hasTypeChanged());
+    }
+
+    public function test_identical_tables_produce_empty_diff() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $table = schema_table('users', [schema_column_integer('id', false), schema_column_text('email')]);
+
+        $diff = $comparator->compare($table, $table);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_primary_key_added() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)], primaryKey: schema_primary_key(['id']));
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertNotNull($diff->addedPrimaryKey);
+        self::assertSame(['id'], $diff->addedPrimaryKey->columns);
+        self::assertNull($diff->removedPrimaryKey);
+    }
+
+    public function test_primary_key_changed() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], primaryKey: schema_primary_key(['id']));
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('email')], primaryKey: schema_primary_key(['id', 'email']));
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertNotNull($diff->addedPrimaryKey);
+        self::assertNotNull($diff->removedPrimaryKey);
+    }
+
+    public function test_primary_key_removed() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)], primaryKey: schema_primary_key(['id']));
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertNull($diff->addedPrimaryKey);
+        self::assertNotNull($diff->removedPrimaryKey);
+        self::assertSame(['id'], $diff->removedPrimaryKey->columns);
+    }
+
+    public function test_trigger_added() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn'),
+        ]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedTriggers);
+        self::assertSame('trg_audit', $diff->addedTriggers[0]->name);
+    }
+
+    public function test_trigger_changed_events() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn'),
+        ]);
+        $target = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT, TriggerEvent::UPDATE], 'audit_fn'),
+        ]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedTriggers);
+        self::assertCount(1, $diff->removedTriggers);
+    }
+
+    public function test_trigger_changed_for_each_row() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: false),
+        ]);
+        $target = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: true),
+        ]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedTriggers);
+        self::assertCount(1, $diff->removedTriggers);
+    }
+
+    public function test_trigger_changed_function_name() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn'),
+        ]);
+        $target = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'log_fn'),
+        ]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedTriggers);
+        self::assertCount(1, $diff->removedTriggers);
+    }
+
+    public function test_trigger_changed_table_name() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn'),
+        ]);
+        $target = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'accounts', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn'),
+        ]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedTriggers);
+        self::assertCount(1, $diff->removedTriggers);
+    }
+
+    public function test_trigger_changed_timing() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn'),
+        ]);
+        $target = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::BEFORE, [TriggerEvent::INSERT], 'audit_fn'),
+        ]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedTriggers);
+        self::assertCount(1, $diff->removedTriggers);
+    }
+
+    public function test_trigger_changed_when_condition() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', whenCondition: null),
+        ]);
+        $target = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', whenCondition: 'NEW.active = true'),
+        ]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->addedTriggers);
+        self::assertCount(1, $diff->removedTriggers);
+    }
+
+    public function test_trigger_removed() : void
+    {
+        $comparator = new TableComparator(new IndexComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy())), new ConstraintComparator(), new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $source = schema_table('users', [schema_column_integer('id', false)], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn'),
+        ]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = $comparator->compare($source, $target);
+
+        self::assertCount(1, $diff->removedTriggers);
+        self::assertSame('trg_audit', $diff->removedTriggers[0]->name);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/TableDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/TableDiffTest.php
new file mode 100644
index 0000000000..a1a2ba0e63
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/TableDiffTest.php
@@ -0,0 +1,905 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{schema_check, schema_column_integer, schema_column_text, schema_exclude, schema_foreign_key, schema_index, schema_primary_key, schema_table, schema_trigger, schema_unique};
+
+use Flow\PostgreSql\QueryBuilder\Schema\{ColumnType, ReferentialAction};
+use Flow\PostgreSql\Schema\{Column, IdentityGeneration, PartitionStrategy, TriggerEvent, TriggerTiming};
+use Flow\PostgreSql\Schema\Constraint\{CheckConstraint as SchemaCheckConstraint, ForeignKey, UniqueConstraint as SchemaUniqueConstraint};
+use Flow\PostgreSql\Schema\Diff\{ColumnDiff, TableDiff};
+use PHPUnit\Framework\TestCase;
+
+final class TableDiffTest extends TestCase
+{
+    public function test_adds_check_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedCheckConstraints: [schema_check('age > 0', 'chk_users_age')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ADD CONSTRAINT chk_users_age CHECK (age > 0)', $sqls[0]->toSql());
+    }
+
+    public function test_adds_check_constraint_with_no_inherit() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            addedCheckConstraints: [new SchemaCheckConstraint('age > 0', 'chk_age', true)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertStringContainsString('NO INHERIT', $sqls[0]->toSql());
+    }
+
+    public function test_adds_column() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+
+        $diff = new TableDiff($source, $target, [schema_column_text('name')]);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ADD COLUMN name pg_catalog.text', $sqls[0]->toSql());
+    }
+
+    public function test_adds_column_with_generated_expression() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            [new Column('full_name', ColumnType::text(), true, isGenerated: true, generationExpression: "first_name || ' ' || last_name")],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertStringContainsString('ADD COLUMN', $sqls[0]->toSql());
+    }
+
+    public function test_adds_column_with_identity() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            [new Column('seq_id', ColumnType::integer(), false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertStringContainsString('ADD COLUMN', $sqls[0]->toSql());
+    }
+
+    public function test_adds_column_with_not_null_and_default() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('status', false, "'active'")]);
+
+        $diff = new TableDiff($source, $target, [schema_column_text('status', false, "'active'")]);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame("ALTER TABLE public.users ADD COLUMN status pg_catalog.text NOT NULL DEFAULT 'active'", $sqls[0]->toSql());
+    }
+
+    public function test_adds_deferrable_foreign_key() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            addedForeignKeys: [new ForeignKey('fk_dept', ['dept_id'], 'public', 'departments', ['id'], ReferentialAction::NO_ACTION, ReferentialAction::CASCADE, true, true)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertStringContainsString('DEFERRABLE', $sqls[0]->toSql());
+        self::assertStringContainsString('INITIALLY DEFERRED', $sqls[0]->toSql());
+    }
+
+    public function test_adds_exclude_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedExcludeConstraints: [schema_exclude('USING gist (tsrange(start_date, end_date) WITH &&)', 'excl_dates_overlap')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ADD CONSTRAINT excl_dates_overlap EXCLUDE USING gist ()', $sqls[0]->toSql());
+    }
+
+    public function test_adds_foreign_key() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedForeignKeys: [schema_foreign_key(['department_id'], 'departments', ['id'], 'fk_users_department')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ADD CONSTRAINT fk_users_department FOREIGN KEY (department_id) REFERENCES public.departments (id)', $sqls[0]->toSql());
+    }
+
+    public function test_adds_index() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedIndexes: [schema_index('idx_users_name', ['name'])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE INDEX idx_users_name ON public.users (name)', $sqls[0]->toSql());
+    }
+
+    public function test_adds_inherit() : void
+    {
+        $source = schema_table('employees', [schema_column_integer('id', false)]);
+        $target = schema_table('employees', [schema_column_integer('id', false)], inherits: ['persons']);
+
+        $diff = new TableDiff($source, $target, addedInherits: ['persons']);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.employees INHERIT persons', $sqls[0]->toSql());
+    }
+
+    public function test_adds_primary_key() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedPrimaryKey: schema_primary_key(['id'], 'pk_users'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ADD CONSTRAINT pk_users PRIMARY KEY (id)', $sqls[0]->toSql());
+    }
+
+    public function test_adds_trigger() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedTriggers: [schema_trigger('trg_users_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_function', true)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE TRIGGER trg_users_audit AFTER INSERT ON public.users FOR EACH ROW EXECUTE FUNCTION audit_function()', $sqls[0]->toSql());
+    }
+
+    public function test_adds_trigger_with_before_timing() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedTriggers: [schema_trigger('trg_users_validate', 'users', TriggerTiming::BEFORE, [TriggerEvent::INSERT, TriggerEvent::UPDATE], 'validate_function', true)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE TRIGGER trg_users_validate BEFORE INSERT OR UPDATE ON public.users FOR EACH ROW EXECUTE FUNCTION validate_function()', $sqls[0]->toSql());
+    }
+
+    public function test_adds_unique_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedUniqueConstraints: [schema_unique(['email'], 'uq_users_email')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users ADD CONSTRAINT uq_users_email UNIQUE (email)', $sqls[0]->toSql());
+    }
+
+    public function test_adds_unique_constraint_with_nulls_not_distinct() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            addedUniqueConstraints: [new SchemaUniqueConstraint(['email'], 'uq_email', true)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertStringContainsString('NULLS NOT DISTINCT', $sqls[0]->toSql());
+    }
+
+    public function test_changes_tablespace() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)], tablespace: 'fast_storage');
+
+        $diff = new TableDiff($source, $target, tablespaceChanged: true);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users SET TABLESPACE fast_storage', $sqls[0]->toSql());
+    }
+
+    public function test_delegates_to_column_diff() : void
+    {
+        $source = schema_table('users', [schema_column_text('name')]);
+        $target = schema_table('users', [schema_column_integer('name', false)]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            modifiedColumns: [new ColumnDiff('public.users', schema_column_text('name'), schema_column_integer('name', false))],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN name TYPE int', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ALTER COLUMN name SET NOT NULL', $sqls[1]->toSql());
+    }
+
+    public function test_dependency_order() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('email')]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            [schema_column_text('email')],
+            addedForeignKeys: [schema_foreign_key(['email'], 'emails', ['address'], 'fk_users_email')],
+            removedForeignKeys: [schema_foreign_key(['department_id'], 'departments', ['id'], 'fk_users_dept')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(3, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP CONSTRAINT fk_users_dept', $sqls[0]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD COLUMN email pg_catalog.text', $sqls[1]->toSql());
+        self::assertSame('ALTER TABLE public.users ADD CONSTRAINT fk_users_email FOREIGN KEY (email) REFERENCES public.emails (address)', $sqls[2]->toSql());
+    }
+
+    public function test_does_not_require_view_rebuild_when_only_column_added() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+
+        $diff = new TableDiff($source, $target, addedColumns: [schema_column_text('name')]);
+
+        self::assertFalse($diff->requiresViewRebuild());
+    }
+
+    public function test_does_not_require_view_rebuild_when_only_default_changed() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_integer('age')]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_integer('age', default: '0')]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            modifiedColumns: [new ColumnDiff('public.users', schema_column_integer('age'), schema_column_integer('age', default: '0'))],
+        );
+
+        self::assertFalse($diff->requiresViewRebuild());
+    }
+
+    public function test_does_not_require_view_rebuild_when_only_nullable_changed() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('name', nullable: false)]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            modifiedColumns: [new ColumnDiff('public.users', schema_column_text('name'), schema_column_text('name', nullable: false))],
+        );
+
+        self::assertFalse($diff->requiresViewRebuild());
+    }
+
+    public function test_drops_check_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedCheckConstraints: [schema_check('age > 0', 'chk_users_age')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP CONSTRAINT chk_users_age', $sqls[0]->toSql());
+    }
+
+    public function test_drops_column() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            removedColumns: [schema_column_text('name')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP name', $sqls[0]->toSql());
+    }
+
+    public function test_drops_exclude_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedExcludeConstraints: [schema_exclude('USING gist (tsrange(start_date, end_date) WITH &&)', 'excl_dates_overlap')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP CONSTRAINT excl_dates_overlap', $sqls[0]->toSql());
+    }
+
+    public function test_drops_foreign_key() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedForeignKeys: [schema_foreign_key(['department_id'], 'departments', ['id'], 'fk_users_department')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP CONSTRAINT fk_users_department', $sqls[0]->toSql());
+    }
+
+    public function test_drops_index() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedIndexes: [schema_index('idx_users_name', ['name'])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP INDEX idx_users_name', $sqls[0]->toSql());
+    }
+
+    public function test_drops_primary_key() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedPrimaryKey: schema_primary_key(['id'], 'pk_users'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP CONSTRAINT pk_users', $sqls[0]->toSql());
+    }
+
+    public function test_drops_trigger() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedTriggers: [schema_trigger('trg_users_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_function', true)],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP TRIGGER trg_users_audit ON public.users', $sqls[0]->toSql());
+    }
+
+    public function test_drops_unique_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedUniqueConstraints: [schema_unique(['email'], 'uq_users_email')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP CONSTRAINT uq_users_email', $sqls[0]->toSql());
+    }
+
+    public function test_empty_diff() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff($table, $table);
+
+        self::assertTrue($diff->isEmpty());
+    }
+
+    public function test_not_empty_when_column_added() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [
+            schema_column_integer('id', false),
+            schema_column_text('name'),
+        ]);
+
+        $diff = new TableDiff($source, $target, [schema_column_text('name')]);
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_not_empty_when_column_modified() : void
+    {
+        $source = schema_table('users', [schema_column_text('name')]);
+        $target = schema_table('users', [schema_column_text('name', false)]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            modifiedColumns: [new ColumnDiff('public.users', schema_column_text('name'), schema_column_text('name', false))],
+        );
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_not_empty_when_inherits_added() : void
+    {
+        $source = schema_table('employees', [schema_column_integer('id', false)]);
+        $target = schema_table('employees', [schema_column_integer('id', false)], inherits: ['persons']);
+
+        $diff = new TableDiff($source, $target, addedInherits: ['persons']);
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_not_empty_when_inherits_removed() : void
+    {
+        $source = schema_table('employees', [schema_column_integer('id', false)], inherits: ['persons']);
+        $target = schema_table('employees', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff($source, $target, removedInherits: ['persons']);
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_not_empty_when_partition_changed() : void
+    {
+        $source = schema_table('events', [schema_column_integer('id', false)]);
+        $target = schema_table('events', [schema_column_integer('id', false)], partitionStrategy: PartitionStrategy::RANGE, partitionColumns: ['id']);
+
+        $diff = new TableDiff($source, $target, partitionChanged: true);
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_not_empty_when_tablespace_changed() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)], tablespace: 'fast_storage');
+
+        $diff = new TableDiff($source, $target, tablespaceChanged: true);
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_not_empty_when_unlogged_changed() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)], unlogged: true);
+
+        $diff = new TableDiff($source, $target, unloggedChanged: true);
+
+        self::assertFalse($diff->isEmpty());
+    }
+
+    public function test_partition_changed_throws_runtime_exception() : void
+    {
+        $source = schema_table('events', [schema_column_integer('id', false)]);
+        $target = schema_table('events', [schema_column_integer('id', false)], partitionStrategy: PartitionStrategy::RANGE, partitionColumns: ['id']);
+
+        $diff = new TableDiff($source, $target, partitionChanged: true);
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Partition strategy change on table "public.events" cannot be applied via ALTER TABLE');
+
+        $diff->generate();
+    }
+
+    public function test_removes_inherit() : void
+    {
+        $source = schema_table('employees', [schema_column_integer('id', false)], inherits: ['persons']);
+        $target = schema_table('employees', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff($source, $target, removedInherits: ['persons']);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.employees NO INHERIT persons', $sqls[0]->toSql());
+    }
+
+    public function test_renames_index() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            renamedIndexes: ['idx_users_name' => schema_index('idx_users_email', ['email'])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER INDEX public.idx_users_name RENAME TO idx_users_email', $sqls[0]->toSql());
+    }
+
+    public function test_requires_view_rebuild_when_column_dropped() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff($source, $target, removedColumns: [schema_column_text('name')]);
+
+        self::assertTrue($diff->requiresViewRebuild());
+    }
+
+    public function test_requires_view_rebuild_when_column_renamed() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('full_name')]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            modifiedColumns: [new ColumnDiff('public.users', schema_column_text('name'), schema_column_text('full_name'))],
+        );
+
+        self::assertTrue($diff->requiresViewRebuild());
+    }
+
+    public function test_requires_view_rebuild_when_column_type_changes() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_integer('amount')]);
+        $target = schema_table('users', [schema_column_integer('id', false), schema_column_text('amount')]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            modifiedColumns: [new ColumnDiff('public.users', schema_column_integer('amount'), schema_column_text('amount'))],
+        );
+
+        self::assertTrue($diff->requiresViewRebuild());
+    }
+
+    public function test_returns_empty_when_no_changes() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff($table, $table);
+
+        self::assertSame([], $diff->generate());
+    }
+
+    public function test_reversed_add_column() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')]);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff($target, $source, removedColumns: [schema_column_text('name')]);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP name', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_add_index() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedIndexes: [schema_index('idx_name', ['name'])],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('DROP INDEX idx_name', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_add_primary_key() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedPrimaryKey: schema_primary_key(['id'], 'pk_users'),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users DROP CONSTRAINT pk_users', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_add_trigger() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedTriggers: [schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertStringContainsString('DROP TRIGGER trg_audit', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_drop_check_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedCheckConstraints: [schema_check('age > 0', 'chk_age')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertStringContainsString('CHECK', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_drop_foreign_key() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            addedForeignKeys: [schema_foreign_key(['dept_id'], 'departments', ['id'], 'fk_dept')],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertStringContainsString('FOREIGN KEY', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_inherit_changes() : void
+    {
+        $source = schema_table('employees', [schema_column_integer('id', false)], inherits: ['persons']);
+        $target = schema_table('employees', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff($source, $target, removedInherits: ['persons']);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.employees NO INHERIT persons', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_modified_column() : void
+    {
+        $source = schema_table('users', [schema_column_integer('name', false)]);
+        $target = schema_table('users', [schema_column_text('name')]);
+
+        $diff = new TableDiff(
+            $source,
+            $target,
+            modifiedColumns: [new ColumnDiff('public.users', schema_column_integer('name', false), schema_column_text('name'))],
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(2, $sqls);
+        self::assertStringContainsString('TYPE', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_unlogged_change() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)], unlogged: true);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff($source, $target, unloggedChanged: true);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users SET LOGGED', $sqls[0]->toSql());
+    }
+
+    public function test_sets_logged() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)], unlogged: true);
+        $target = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff($source, $target, unloggedChanged: true);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users SET LOGGED', $sqls[0]->toSql());
+    }
+
+    public function test_sets_unlogged() : void
+    {
+        $source = schema_table('users', [schema_column_integer('id', false)]);
+        $target = schema_table('users', [schema_column_integer('id', false)], unlogged: true);
+
+        $diff = new TableDiff($source, $target, unloggedChanged: true);
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('ALTER TABLE public.users SET UNLOGGED', $sqls[0]->toSql());
+    }
+
+    public function test_throws_when_dropping_unnamed_check_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedCheckConstraints: [schema_check('age > 0')],
+        );
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Cannot drop unnamed check constraint on table "public.users"');
+
+        $diff->generate();
+    }
+
+    public function test_throws_when_dropping_unnamed_exclude_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedExcludeConstraints: [schema_exclude('USING gist (col WITH &&)')],
+        );
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Cannot drop unnamed exclude constraint on table "public.users"');
+
+        $diff->generate();
+    }
+
+    public function test_throws_when_dropping_unnamed_foreign_key() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedForeignKeys: [schema_foreign_key(['department_id'], 'departments', ['id'])],
+        );
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Cannot drop unnamed foreign key on table "public.users"');
+
+        $diff->generate();
+    }
+
+    public function test_throws_when_dropping_unnamed_primary_key() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedPrimaryKey: schema_primary_key(['id']),
+        );
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Cannot drop unnamed primary key on table "public.users"');
+
+        $diff->generate();
+    }
+
+    public function test_throws_when_dropping_unnamed_unique_constraint() : void
+    {
+        $table = schema_table('users', [schema_column_integer('id', false)]);
+
+        $diff = new TableDiff(
+            $table,
+            $table,
+            removedUniqueConstraints: [schema_unique(['email'])],
+        );
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Cannot drop unnamed unique constraint on table "public.users"');
+
+        $diff->generate();
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/TableStructureComparatorTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/TableStructureComparatorTest.php
new file mode 100644
index 0000000000..d5345f57f1
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/TableStructureComparatorTest.php
@@ -0,0 +1,220 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{schema_column_integer, schema_column_text, schema_column_varchar, schema_index, schema_primary_key, schema_table, schema_trigger, schema_unique};
+
+use Flow\PostgreSql\Schema\Constraint\CheckConstraint;
+use Flow\PostgreSql\Schema\Diff\{GreedySimilarityRenameStrategy, SimilarTextStrategy, TableStructureComparator};
+use Flow\PostgreSql\Schema\{PartitionStrategy, TriggerEvent, TriggerTiming};
+use PHPUnit\Framework\TestCase;
+
+final class TableStructureComparatorTest extends TestCase
+{
+    public function test_detect_rename_ambiguous_resolved_by_similarity() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->detectTableRenames(
+            [schema_table('table_c', [schema_column_integer('id', false)])],
+            [schema_table('table_a', [schema_column_integer('id', false)]), schema_table('table_b', [schema_column_integer('id', false)])],
+        );
+
+        self::assertCount(0, $result->added);
+        self::assertCount(1, $result->removed);
+        self::assertCount(1, $result->renamed);
+    }
+
+    public function test_detect_rename_not_triggered_when_columns_differ() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->detectTableRenames(
+            [schema_table('new_users', [schema_column_integer('id', false), schema_column_text('name')])],
+            [schema_table('old_users', [schema_column_integer('id', false)])],
+        );
+
+        self::assertCount(1, $result->added);
+        self::assertCount(1, $result->removed);
+        self::assertNull($result->renamed);
+    }
+
+    public function test_detect_rename_when_structure_identical() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+
+        $result = $comparator->detectTableRenames(
+            [schema_table('new_users', [schema_column_integer('id', false), schema_column_text('name')], schema_primary_key(['id']))],
+            [schema_table('old_users', [schema_column_integer('id', false), schema_column_text('name')], schema_primary_key(['id']))],
+        );
+
+        self::assertCount(0, $result->added);
+        self::assertCount(0, $result->removed);
+        self::assertCount(1, $result->renamed);
+        self::assertArrayHasKey('public.old_users', $result->renamed);
+        self::assertSame('new_users', $result->renamed['public.old_users']->name);
+    }
+
+    public function test_identical_tables_are_structurally_equal() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')], schema_primary_key(['id']));
+        $b = schema_table('users', [schema_column_integer('id', false), schema_column_text('name')], schema_primary_key(['id']));
+
+        self::assertTrue($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_differ_by_column_count() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('t', [schema_column_integer('id', false)]);
+        $b = schema_table('t', [schema_column_integer('id', false), schema_column_text('name')]);
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_differ_by_column_nullable() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('t', [schema_column_integer('id', false)]);
+        $b = schema_table('t', [schema_column_integer('id', true)]);
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_differ_by_column_type() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('t', [schema_column_integer('id', false), schema_column_text('name')]);
+        $b = schema_table('t', [schema_column_integer('id', false), schema_column_varchar('name', 255)]);
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_differ_by_inherits() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('t', [schema_column_integer('id', false)]);
+        $b = schema_table('t', [schema_column_integer('id', false)], inherits: ['parent']);
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_differ_by_partition_strategy() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('t', [schema_column_integer('id', false)]);
+        $b = schema_table('t', [schema_column_integer('id', false)], partitionStrategy: PartitionStrategy::RANGE, partitionColumns: ['id']);
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_differ_by_primary_key() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('t', [schema_column_integer('id', false)], schema_primary_key(['id']));
+        $b = schema_table('t', [schema_column_integer('id', false)]);
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_differ_by_tablespace() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('t', [schema_column_integer('id', false)]);
+        $b = schema_table('t', [schema_column_integer('id', false)], tablespace: 'fast_storage');
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_differ_by_unlogged() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('t', [schema_column_integer('id', false)]);
+        $b = schema_table('t', [schema_column_integer('id', false)], unlogged: true);
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_not_equal_across_different_schemas() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('t', [schema_column_integer('id', false)], schema: 'public');
+        $b = schema_table('t', [schema_column_integer('id', false)], schema: 'audit');
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_with_different_constraint_names_are_structurally_equal() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table(
+            'old',
+            [schema_column_integer('id', false), schema_column_text('email')],
+            uniqueConstraints: [schema_unique(['email'], 'uq_old_email')],
+            checkConstraints: [new CheckConstraint("email <> ''", 'chk_old')],
+        );
+        $b = schema_table(
+            'new',
+            [schema_column_integer('id', false), schema_column_text('email')],
+            uniqueConstraints: [schema_unique(['email'], 'uq_new_email')],
+            checkConstraints: [new CheckConstraint("email <> ''", 'chk_new')],
+        );
+
+        self::assertTrue($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_with_different_index_names_are_structurally_equal() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('old', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+            schema_index('idx_old_email', ['email']),
+        ]);
+        $b = schema_table('new', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+            schema_index('idx_new_email', ['email']),
+        ]);
+
+        self::assertTrue($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_with_different_index_structure_are_not_equal() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('old', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+            schema_index('idx_old', ['email']),
+        ]);
+        $b = schema_table('new', [schema_column_integer('id', false), schema_column_text('email')], indexes: [
+            schema_index('idx_new', ['email'], unique: true),
+        ]);
+
+        self::assertFalse($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_with_different_names_are_structurally_equal() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table('old_users', [schema_column_integer('id', false), schema_column_text('name')]);
+        $b = schema_table('new_users', [schema_column_integer('id', false), schema_column_text('name')]);
+
+        self::assertTrue($comparator->haveEqualStructure($a, $b));
+    }
+
+    public function test_tables_with_different_trigger_names_are_structurally_equal() : void
+    {
+        $comparator = new TableStructureComparator(new GreedySimilarityRenameStrategy(new SimilarTextStrategy()));
+        $a = schema_table(
+            'old',
+            [schema_column_integer('id', false)],
+            triggers: [schema_trigger('trg_old', 'old', TriggerTiming::BEFORE, [TriggerEvent::INSERT], 'my_func')],
+        );
+        $b = schema_table(
+            'new',
+            [schema_column_integer('id', false)],
+            triggers: [schema_trigger('trg_new', 'new', TriggerTiming::BEFORE, [TriggerEvent::INSERT], 'my_func')],
+        );
+
+        self::assertTrue($comparator->haveEqualStructure($a, $b));
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ViewDependencyResolverTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ViewDependencyResolverTest.php
new file mode 100644
index 0000000000..de809eef7e
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ViewDependencyResolverTest.php
@@ -0,0 +1,145 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\ast_view_dependency_resolver;
+
+use function Flow\PostgreSql\DSL\{schema, schema_column_integer, schema_column_text, schema_materialized_view, schema_table, schema_view};
+
+use Flow\PostgreSql\Schema\{Catalog, MaterializedView, View};
+use PHPUnit\Framework\TestCase;
+
+final class ViewDependencyResolverTest extends TestCase
+{
+    public function test_does_not_resolve_view_depending_on_unmodified_table() : void
+    {
+        $catalog = new Catalog([
+            schema(
+                'public',
+                tables: [
+                    schema_table('users', [schema_column_integer('id', false)]),
+                    schema_table('orders', [schema_column_integer('id', false)]),
+                ],
+                views: [schema_view('active_users', 'SELECT * FROM users')],
+            ),
+        ]);
+
+        $resolver = ast_view_dependency_resolver();
+        $result = $resolver->resolve($catalog, ['public.orders']);
+
+        self::assertTrue($result->isEmpty());
+    }
+
+    public function test_resolves_cascading_view_dependencies() : void
+    {
+        $catalog = new Catalog([
+            schema(
+                'data',
+                tables: [schema_table('events', [schema_column_integer('id', false), schema_column_text('type')])],
+            ),
+            schema(
+                'report',
+                views: [schema_view('event_summary', 'SELECT * FROM data.events')],
+            ),
+            schema(
+                'public',
+                views: [schema_view('dashboard', 'SELECT * FROM report.event_summary')],
+            ),
+        ]);
+
+        $resolver = ast_view_dependency_resolver();
+        $result = $resolver->resolve($catalog, ['data.events']);
+
+        self::assertCount(2, $result->toDrop);
+        self::assertSame('public.dashboard', $result->toDrop[0]->qualifiedName());
+        self::assertSame('report.event_summary', $result->toDrop[1]->qualifiedName());
+
+        self::assertCount(2, $result->toCreate);
+        self::assertSame('report.event_summary', $result->toCreate[0]->qualifiedName());
+        self::assertSame('public.dashboard', $result->toCreate[1]->qualifiedName());
+    }
+
+    public function test_resolves_cross_schema_dependency() : void
+    {
+        $catalog = new Catalog([
+            schema(
+                'enriched',
+                tables: [schema_table('full_data', [schema_column_integer('id', false), schema_column_integer('amount')])],
+            ),
+            schema(
+                'public',
+                views: [schema_view('enriched_full_data', 'SELECT * FROM enriched.full_data')],
+            ),
+        ]);
+
+        $resolver = ast_view_dependency_resolver();
+        $result = $resolver->resolve($catalog, ['enriched.full_data']);
+
+        self::assertCount(1, $result->toDrop);
+        self::assertSame('public.enriched_full_data', $result->toDrop[0]->qualifiedName());
+        self::assertInstanceOf(View::class, $result->toDrop[0]->view);
+
+        self::assertCount(1, $result->toCreate);
+        self::assertSame('public.enriched_full_data', $result->toCreate[0]->qualifiedName());
+    }
+
+    public function test_resolves_materialized_view_depending_on_modified_table() : void
+    {
+        $catalog = new Catalog([
+            schema(
+                'public',
+                tables: [schema_table('orders', [schema_column_integer('id', false), schema_column_integer('total')])],
+                materializedViews: [schema_materialized_view('mv_order_stats', 'SELECT * FROM orders')],
+            ),
+        ]);
+
+        $resolver = ast_view_dependency_resolver();
+        $result = $resolver->resolve($catalog, ['public.orders']);
+
+        self::assertCount(1, $result->toDrop);
+        self::assertSame('public.mv_order_stats', $result->toDrop[0]->qualifiedName());
+        self::assertInstanceOf(MaterializedView::class, $result->toDrop[0]->view);
+
+        self::assertCount(1, $result->toCreate);
+        self::assertSame('public.mv_order_stats', $result->toCreate[0]->qualifiedName());
+    }
+
+    public function test_resolves_view_depending_on_modified_table() : void
+    {
+        $catalog = new Catalog([
+            schema(
+                'public',
+                tables: [schema_table('users', [schema_column_integer('id', false), schema_column_text('name')])],
+                views: [schema_view('active_users', 'SELECT * FROM users')],
+            ),
+        ]);
+
+        $resolver = ast_view_dependency_resolver();
+        $result = $resolver->resolve($catalog, ['public.users']);
+
+        self::assertCount(1, $result->toDrop);
+        self::assertSame('public.active_users', $result->toDrop[0]->qualifiedName());
+        self::assertInstanceOf(View::class, $result->toDrop[0]->view);
+
+        self::assertCount(1, $result->toCreate);
+        self::assertSame('public.active_users', $result->toCreate[0]->qualifiedName());
+    }
+
+    public function test_returns_empty_when_no_modified_tables() : void
+    {
+        $catalog = new Catalog([
+            schema(
+                'public',
+                tables: [schema_table('users', [schema_column_integer('id', false)])],
+                views: [schema_view('active_users', 'SELECT * FROM users')],
+            ),
+        ]);
+
+        $resolver = ast_view_dependency_resolver();
+        $result = $resolver->resolve($catalog, []);
+
+        self::assertTrue($result->isEmpty());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ViewDiffTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ViewDiffTest.php
new file mode 100644
index 0000000000..31fcb93a48
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/Diff/ViewDiffTest.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema\Diff;
+
+use function Flow\PostgreSql\DSL\{and_, col, eq, literal, schema_view, select, star, table};
+
+use Flow\PostgreSql\Schema\Diff\ViewDiff;
+use PHPUnit\Framework\TestCase;
+
+final class ViewDiffTest extends TestCase
+{
+    public function test_generates_create_or_replace_view() : void
+    {
+        $diff = new ViewDiff(
+            schema_view('active_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()),
+            schema_view('active_users', select(star())->from(table('users'))->where(and_(eq(col('active'), literal(true)), eq(col('verified'), literal(true))))->toSql()),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE OR REPLACE VIEW active_users AS SELECT * FROM users WHERE active = true AND verified = true', $sqls[0]->toSql());
+    }
+
+    public function test_reversed_view_definition_change() : void
+    {
+        $diff = new ViewDiff(
+            schema_view('active_users', select(star())->from(table('users'))->where(and_(eq(col('active'), literal(true)), eq(col('verified'), literal(true))))->toSql()),
+            schema_view('active_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql()),
+        );
+
+        $sqls = $diff->generate();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE OR REPLACE VIEW active_users AS SELECT * FROM users WHERE active = true', $sqls[0]->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/DomainTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/DomainTest.php
new file mode 100644
index 0000000000..ce7caf6a44
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/DomainTest.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{column_type_integer, column_type_varchar, schema_check, schema_domain};
+
+use PHPUnit\Framework\TestCase;
+
+final class DomainTest extends TestCase
+{
+    public function test_domain_construction() : void
+    {
+        $domain = schema_domain('email_address', column_type_varchar(255));
+
+        self::assertSame('email_address', $domain->name);
+        self::assertTrue($domain->nullable);
+        self::assertNull($domain->default);
+        self::assertSame([], $domain->checkConstraints);
+    }
+
+    public function test_domain_with_constraints() : void
+    {
+        $domain = schema_domain(
+            'positive_int',
+            column_type_integer(),
+            nullable: false,
+            default: '0',
+            checkConstraints: [schema_check('VALUE > 0', 'chk_positive')],
+        );
+
+        self::assertFalse($domain->nullable);
+        self::assertSame('0', $domain->default);
+        self::assertCount(1, $domain->checkConstraints);
+        self::assertSame('VALUE > 0', $domain->checkConstraints[0]->expression);
+    }
+
+    public function test_to_sql_generates_create_domain() : void
+    {
+        self::assertSame(
+            'CREATE DOMAIN email_address AS varchar(255)',
+            schema_domain('email_address', column_type_varchar(255))->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_create_domain_with_constraints() : void
+    {
+        self::assertSame(
+            'CREATE DOMAIN positive_int AS int NOT NULL DEFAULT 0 CONSTRAINT chk_positive CHECK (value > 0)',
+            schema_domain(
+                'positive_int',
+                column_type_integer(),
+                nullable: false,
+                default: '0',
+                checkConstraints: [schema_check('VALUE > 0', 'chk_positive')],
+            )->toSql()->toSql(),
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ExtensionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ExtensionTest.php
new file mode 100644
index 0000000000..8cfb8e3198
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ExtensionTest.php
@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\schema_extension;
+
+use PHPUnit\Framework\TestCase;
+
+final class ExtensionTest extends TestCase
+{
+    public function test_extension_construction() : void
+    {
+        $ext = schema_extension('uuid-ossp');
+
+        self::assertSame('uuid-ossp', $ext->name);
+        self::assertNull($ext->version);
+    }
+
+    public function test_extension_with_version() : void
+    {
+        $ext = schema_extension('postgis', '3.4.0');
+
+        self::assertSame('postgis', $ext->name);
+        self::assertSame('3.4.0', $ext->version);
+    }
+
+    public function test_to_sql_generates_create_extension() : void
+    {
+        self::assertSame(
+            'CREATE EXTENSION "uuid-ossp"',
+            schema_extension('uuid-ossp')->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_create_extension_with_version() : void
+    {
+        self::assertSame(
+            'CREATE EXTENSION postgis VERSION "3.4.0"',
+            schema_extension('postgis', '3.4.0')->toSql()->toSql(),
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ForeignKeyDependencyOrderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ForeignKeyDependencyOrderTest.php
new file mode 100644
index 0000000000..64a1d31a41
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ForeignKeyDependencyOrderTest.php
@@ -0,0 +1,221 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{
+    schema_column_integer,
+    schema_column_text,
+    schema_foreign_key,
+    schema_primary_key,
+    schema_table,
+};
+
+use Flow\PostgreSql\Schema\Exception\SchemaException;
+use Flow\PostgreSql\Schema\ForeignKeyDependencyOrder;
+use PHPUnit\Framework\TestCase;
+
+final class ForeignKeyDependencyOrderTest extends TestCase
+{
+    public function test_circular_dependency_throws_exception() : void
+    {
+        $tableA = schema_table(
+            'table_a',
+            [schema_column_integer('id'), schema_column_integer('b_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [schema_foreign_key(['b_id'], 'table_b', ['id'])],
+            schema: 'public',
+        );
+
+        $tableB = schema_table(
+            'table_b',
+            [schema_column_integer('id'), schema_column_integer('a_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [schema_foreign_key(['a_id'], 'table_a', ['id'])],
+            schema: 'public',
+        );
+
+        $this->expectException(SchemaException::class);
+        $this->expectExceptionMessage('Circular foreign key dependency');
+
+        (new ForeignKeyDependencyOrder())->order([$tableA, $tableB]);
+    }
+
+    public function test_diamond_dependency() : void
+    {
+        $root = schema_table(
+            'root',
+            [schema_column_integer('id')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $left = schema_table(
+            'left_table',
+            [schema_column_integer('id'), schema_column_integer('root_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [schema_foreign_key(['root_id'], 'root', ['id'])],
+            schema: 'public',
+        );
+
+        $right = schema_table(
+            'right_table',
+            [schema_column_integer('id'), schema_column_integer('root_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [schema_foreign_key(['root_id'], 'root', ['id'])],
+            schema: 'public',
+        );
+
+        $bottom = schema_table(
+            'bottom',
+            [schema_column_integer('id'), schema_column_integer('left_id'), schema_column_integer('right_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [
+                schema_foreign_key(['left_id'], 'left_table', ['id']),
+                schema_foreign_key(['right_id'], 'right_table', ['id']),
+            ],
+            schema: 'public',
+        );
+
+        $result = (new ForeignKeyDependencyOrder())->order([$bottom, $left, $right, $root]);
+
+        $names = \array_map(static fn ($t) => $t->name, $result);
+
+        self::assertSame('root', $names[0]);
+        $leftIdx = \array_search('left_table', $names, true);
+        $rightIdx = \array_search('right_table', $names, true);
+        $bottomIdx = \array_search('bottom', $names, true);
+        self::assertGreaterThan($leftIdx, $bottomIdx);
+        self::assertGreaterThan($rightIdx, $bottomIdx);
+    }
+
+    public function test_empty_list() : void
+    {
+        self::assertSame([], (new ForeignKeyDependencyOrder())->order([]));
+    }
+
+    public function test_fk_referencing_table_outside_the_list_is_ignored() : void
+    {
+        $independent = schema_table(
+            'independent',
+            [schema_column_integer('id')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $child = schema_table(
+            'child',
+            [schema_column_integer('id'), schema_column_integer('external_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [schema_foreign_key(['external_id'], 'external_table', ['id'], referenceSchema: 'other_schema')],
+            schema: 'public',
+        );
+
+        $result = (new ForeignKeyDependencyOrder())->order([$independent, $child]);
+
+        self::assertCount(2, $result);
+    }
+
+    public function test_linear_chain() : void
+    {
+        $grandparent = schema_table(
+            'grandparent',
+            [schema_column_integer('id')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $parent = schema_table(
+            'parent',
+            [schema_column_integer('id'), schema_column_integer('gp_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [schema_foreign_key(['gp_id'], 'grandparent', ['id'])],
+            schema: 'public',
+        );
+
+        $child = schema_table(
+            'child',
+            [schema_column_integer('id'), schema_column_integer('parent_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [schema_foreign_key(['parent_id'], 'parent', ['id'])],
+            schema: 'public',
+        );
+
+        $result = (new ForeignKeyDependencyOrder())->order([$child, $parent, $grandparent]);
+
+        $names = \array_map(static fn ($t) => $t->name, $result);
+
+        self::assertSame(['grandparent', 'parent', 'child'], $names);
+    }
+
+    public function test_self_referencing_fk() : void
+    {
+        $categories = schema_table(
+            'categories',
+            [schema_column_integer('id'), schema_column_integer('parent_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [schema_foreign_key(['parent_id'], 'categories', ['id'])],
+            schema: 'public',
+        );
+
+        $products = schema_table(
+            'products',
+            [schema_column_integer('id'), schema_column_integer('category_id')],
+            schema_primary_key(['id']),
+            foreignKeys: [schema_foreign_key(['category_id'], 'categories', ['id'])],
+            schema: 'public',
+        );
+
+        $result = (new ForeignKeyDependencyOrder())->order([$products, $categories]);
+
+        $names = \array_map(static fn ($t) => $t->name, $result);
+
+        self::assertSame(['categories', 'products'], $names);
+    }
+
+    public function test_single_table() : void
+    {
+        $table = schema_table(
+            'users',
+            [schema_column_integer('id'), schema_column_text('name')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $result = (new ForeignKeyDependencyOrder())->order([$table]);
+
+        self::assertCount(1, $result);
+        self::assertSame('users', $result[0]->name);
+    }
+
+    public function test_tables_without_fks_preserve_order() : void
+    {
+        $tableA = schema_table(
+            'alpha',
+            [schema_column_integer('id')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $tableB = schema_table(
+            'beta',
+            [schema_column_integer('id')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $tableC = schema_table(
+            'gamma',
+            [schema_column_integer('id')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $result = (new ForeignKeyDependencyOrder())->order([$tableA, $tableB, $tableC]);
+
+        $names = \array_map(static fn ($t) => $t->name, $result);
+
+        self::assertSame(['alpha', 'beta', 'gamma'], $names);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/FunctionTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/FunctionTest.php
new file mode 100644
index 0000000000..b357c1f197
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/FunctionTest.php
@@ -0,0 +1,138 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\schema_function;
+
+use Flow\PostgreSql\Schema\FunctionVolatility;
+use PHPUnit\Framework\TestCase;
+
+final class FunctionTest extends TestCase
+{
+    public function test_function_construction() : void
+    {
+        $func = schema_function('now', 'timestamp with time zone');
+
+        self::assertSame('now', $func->name);
+        self::assertSame('timestamp with time zone', $func->returnType);
+        self::assertSame([], $func->argumentTypes);
+        self::assertSame('sql', $func->language);
+        self::assertNull($func->definition);
+        self::assertFalse($func->isStrict);
+        self::assertNull($func->volatility);
+    }
+
+    public function test_function_with_all_options() : void
+    {
+        $func = schema_function(
+            'add_numbers',
+            'integer',
+            argumentTypes: ['integer', 'integer'],
+            language: 'plpgsql',
+            definition: 'BEGIN RETURN $1 + $2; END;',
+            isStrict: true,
+            volatility: FunctionVolatility::IMMUTABLE,
+        );
+
+        self::assertSame(['integer', 'integer'], $func->argumentTypes);
+        self::assertSame('plpgsql', $func->language);
+        self::assertTrue($func->isStrict);
+        self::assertSame(FunctionVolatility::IMMUTABLE, $func->volatility);
+    }
+
+    public function test_to_sql_generates_create_function() : void
+    {
+        self::assertSame(
+            'CREATE OR REPLACE FUNCTION add_numbers(IN int, IN int) RETURNS int LANGUAGE plpgsql RETURNS NULL ON NULL INPUT IMMUTABLE AS $$BEGIN RETURN $1 + $2; END;$$',
+            schema_function(
+                'add_numbers',
+                'integer',
+                argumentTypes: ['integer', 'integer'],
+                language: 'plpgsql',
+                definition: 'BEGIN RETURN $1 + $2; END;',
+                isStrict: true,
+                volatility: FunctionVolatility::IMMUTABLE,
+            )->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_function_without_arguments() : void
+    {
+        self::assertSame(
+            'CREATE OR REPLACE FUNCTION current_user_id() RETURNS int LANGUAGE sql AS $$SELECT 1$$',
+            schema_function(
+                'current_user_id',
+                'integer',
+                language: 'sql',
+                definition: 'SELECT 1',
+            )->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_immutable_function_without_strict() : void
+    {
+        self::assertSame(
+            'CREATE OR REPLACE FUNCTION pi_val() RETURNS double precision LANGUAGE sql IMMUTABLE AS $$SELECT 3.14159$$',
+            schema_function(
+                'pi_val',
+                'double precision',
+                language: 'sql',
+                definition: 'SELECT 3.14159',
+                volatility: FunctionVolatility::IMMUTABLE,
+            )->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_stable_function() : void
+    {
+        self::assertSame(
+            'CREATE OR REPLACE FUNCTION get_name(IN int) RETURNS text LANGUAGE sql STABLE AS $$SELECT name FROM users WHERE id = $1$$',
+            schema_function(
+                'get_name',
+                'text',
+                argumentTypes: ['integer'],
+                language: 'sql',
+                definition: 'SELECT name FROM users WHERE id = $1',
+                volatility: FunctionVolatility::STABLE,
+            )->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_strict_function_without_volatility() : void
+    {
+        self::assertSame(
+            'CREATE OR REPLACE FUNCTION double_it(IN int) RETURNS int LANGUAGE sql RETURNS NULL ON NULL INPUT AS $$SELECT $1 * 2$$',
+            schema_function(
+                'double_it',
+                'integer',
+                argumentTypes: ['integer'],
+                language: 'sql',
+                definition: 'SELECT $1 * 2',
+                isStrict: true,
+            )->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_volatile_function() : void
+    {
+        self::assertSame(
+            'CREATE OR REPLACE FUNCTION update_ts() RETURNS trigger LANGUAGE plpgsql VOLATILE AS $$BEGIN NEW.updated_at = now(); RETURN NEW; END;$$',
+            schema_function(
+                'update_ts',
+                'trigger',
+                language: 'plpgsql',
+                definition: 'BEGIN NEW.updated_at = now(); RETURN NEW; END;',
+                volatility: FunctionVolatility::VOLATILE,
+            )->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_returns_null_when_definition_null() : void
+    {
+        self::assertNull(
+            schema_function('now', 'timestamp with time zone')->toSql(),
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/IndexTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/IndexTest.php
new file mode 100644
index 0000000000..1a01bd1ab7
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/IndexTest.php
@@ -0,0 +1,126 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\schema_index;
+use Flow\PostgreSql\Schema\IndexMethod;
+
+use PHPUnit\Framework\TestCase;
+
+final class IndexTest extends TestCase
+{
+    public function test_index_construction() : void
+    {
+        $index = schema_index('idx_users_name', ['name']);
+
+        self::assertSame('idx_users_name', $index->name);
+        self::assertSame(['name'], $index->columns);
+        self::assertFalse($index->unique);
+        self::assertSame(IndexMethod::BTREE, $index->method);
+        self::assertFalse($index->primary);
+        self::assertNull($index->predicate);
+    }
+
+    public function test_index_with_method() : void
+    {
+        $index = schema_index('idx_data_tags', ['tags'], method: IndexMethod::GIN);
+
+        self::assertSame(IndexMethod::GIN, $index->method);
+    }
+
+    public function test_index_with_predicate() : void
+    {
+        $index = schema_index('idx_active_users', ['email'], predicate: 'active = true');
+
+        self::assertSame('active = true', $index->predicate);
+    }
+
+    public function test_is_equal_for_identical_indexes() : void
+    {
+        $a = schema_index('idx_users_name', ['name'], unique: true, method: IndexMethod::BTREE);
+        $b = schema_index('idx_users_name', ['name'], unique: true, method: IndexMethod::BTREE);
+
+        self::assertTrue($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_columns_differ() : void
+    {
+        $a = schema_index('idx_users', ['name']);
+        $b = schema_index('idx_users', ['email']);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_method_differs() : void
+    {
+        $a = schema_index('idx_users', ['name'], method: IndexMethod::BTREE);
+        $b = schema_index('idx_users', ['name'], method: IndexMethod::GIN);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_name_differs() : void
+    {
+        $a = schema_index('idx_a', ['name']);
+        $b = schema_index('idx_b', ['name']);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_predicate_differs() : void
+    {
+        $a = schema_index('idx_users', ['name'], predicate: 'active = true');
+        $b = schema_index('idx_users', ['name'], predicate: 'active = false');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_unique_differs() : void
+    {
+        $a = schema_index('idx_users', ['name'], unique: false);
+        $b = schema_index('idx_users', ['name'], unique: true);
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_columns_differ() : void
+    {
+        $a = schema_index('idx_users', ['name']);
+        $b = schema_index('idx_users', ['email']);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_method_differs() : void
+    {
+        $a = schema_index('idx_users', ['name'], method: IndexMethod::BTREE);
+        $b = schema_index('idx_users', ['name'], method: IndexMethod::HASH);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_primary_differs() : void
+    {
+        $a = schema_index('idx_users', ['id'], primary: true);
+        $b = schema_index('idx_users', ['id'], primary: false);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_when_only_name_differs() : void
+    {
+        $a = schema_index('idx_a', ['name', 'email'], unique: true, method: IndexMethod::GIN, predicate: 'active = true');
+        $b = schema_index('idx_b', ['name', 'email'], unique: true, method: IndexMethod::GIN, predicate: 'active = true');
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+
+    public function test_unique_index() : void
+    {
+        $index = schema_index('idx_users_email', ['email'], unique: true);
+
+        self::assertTrue($index->unique);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/MaterializedViewDependencyOrderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/MaterializedViewDependencyOrderTest.php
new file mode 100644
index 0000000000..fa5c4124dc
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/MaterializedViewDependencyOrderTest.php
@@ -0,0 +1,75 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use Flow\PostgreSql\Parser;
+use Flow\PostgreSql\Schema\Exception\SchemaException;
+use Flow\PostgreSql\Schema\{MaterializedView, MaterializedViewDependencyOrder};
+use PHPUnit\Framework\TestCase;
+
+final class MaterializedViewDependencyOrderTest extends TestCase
+{
+    public function test_circular_dependency_throws_exception() : void
+    {
+        $viewA = new MaterializedView('mv_a', 'SELECT * FROM mv_b');
+        $viewB = new MaterializedView('mv_b', 'SELECT * FROM mv_a');
+
+        $this->expectException(SchemaException::class);
+        $this->expectExceptionMessage('Circular dependency detected between materialized views');
+
+        (new MaterializedViewDependencyOrder(new Parser()))->order([$viewA, $viewB]);
+    }
+
+    public function test_empty_list() : void
+    {
+        self::assertSame([], (new MaterializedViewDependencyOrder(new Parser()))->order([]));
+    }
+
+    public function test_linear_chain() : void
+    {
+        $base = new MaterializedView('base_mv', 'SELECT id, name FROM users');
+        $top = new MaterializedView('top_mv', 'SELECT * FROM base_mv');
+
+        $result = (new MaterializedViewDependencyOrder(new Parser()))->order([$top, $base]);
+
+        $names = \array_map(static fn (MaterializedView $v) => $v->name, $result);
+
+        self::assertSame(['base_mv', 'top_mv'], $names);
+    }
+
+    public function test_self_referencing_materialized_view() : void
+    {
+        $recursive = new MaterializedView('recursive_mv', 'SELECT * FROM recursive_mv');
+        $other = new MaterializedView('other_mv', 'SELECT * FROM recursive_mv');
+
+        $result = (new MaterializedViewDependencyOrder(new Parser()))->order([$other, $recursive]);
+
+        $names = \array_map(static fn (MaterializedView $v) => $v->name, $result);
+
+        self::assertSame(['recursive_mv', 'other_mv'], $names);
+    }
+
+    public function test_single_materialized_view() : void
+    {
+        $view = new MaterializedView('my_mv', 'SELECT * FROM users');
+
+        $result = (new MaterializedViewDependencyOrder(new Parser()))->order([$view]);
+
+        self::assertCount(1, $result);
+        self::assertSame('my_mv', $result[0]->name);
+    }
+
+    public function test_views_without_dependencies_preserve_order() : void
+    {
+        $viewA = new MaterializedView('alpha', 'SELECT 1 AS val');
+        $viewB = new MaterializedView('beta', 'SELECT 2 AS val');
+
+        $result = (new MaterializedViewDependencyOrder(new Parser()))->order([$viewA, $viewB]);
+
+        $names = \array_map(static fn (MaterializedView $v) => $v->name, $result);
+
+        self::assertSame(['alpha', 'beta'], $names);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/MaterializedViewTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/MaterializedViewTest.php
new file mode 100644
index 0000000000..e98714ea9b
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/MaterializedViewTest.php
@@ -0,0 +1,105 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{agg_count, col, schema_index, schema_materialized_view, select, table};
+
+use Flow\PostgreSql\Schema\IndexMethod;
+use PHPUnit\Framework\TestCase;
+
+final class MaterializedViewTest extends TestCase
+{
+    public function test_materialized_view_construction() : void
+    {
+        $definition = select(agg_count())->from(table('users'))->toSql();
+        $matview = schema_materialized_view('user_stats', $definition);
+
+        self::assertSame('user_stats', $matview->name);
+        self::assertSame($definition, $matview->definition);
+        self::assertSame([], $matview->indexes);
+    }
+
+    public function test_materialized_view_with_indexes() : void
+    {
+        $matview = schema_materialized_view(
+            'user_stats',
+            select(col('id'), agg_count())->from(table('users'))->groupBy(col('id'))->toSql(),
+            indexes: [schema_index('idx_user_stats_id', ['id'], unique: true)],
+        );
+
+        self::assertCount(1, $matview->indexes);
+        self::assertSame('idx_user_stats_id', $matview->indexes[0]->name);
+    }
+
+    public function test_to_sql_generates_create_materialized_view() : void
+    {
+        $sqls = schema_materialized_view(
+            'user_stats',
+            select(col('id'), agg_count())->from(table('users'))->groupBy(col('id'))->toSql(),
+        )->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE MATERIALIZED VIEW user_stats AS SELECT id, count(*) FROM users GROUP BY id',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_create_materialized_view_with_indexes() : void
+    {
+        $sqls = schema_materialized_view(
+            'user_stats',
+            select(col('id'), agg_count())->from(table('users'))->groupBy(col('id'))->toSql(),
+            indexes: [schema_index('idx_user_stats_id', ['id'], unique: true)],
+        )->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('CREATE MATERIALIZED VIEW user_stats AS SELECT id, count(*) FROM users GROUP BY id', $sqls[0]->toSql());
+        self::assertSame('CREATE UNIQUE INDEX idx_user_stats_id ON user_stats (id)', $sqls[1]->toSql());
+    }
+
+    public function test_to_sql_generates_materialized_view_with_multiple_indexes() : void
+    {
+        $sqls = schema_materialized_view(
+            'user_stats',
+            select(col('id'), agg_count())->from(table('users'))->groupBy(col('id'))->toSql(),
+            indexes: [
+                schema_index('idx_upc_id', ['id'], unique: true),
+                schema_index('idx_upc_gin', ['metadata'], method: IndexMethod::GIN),
+            ],
+        )->toSql();
+
+        self::assertCount(3, $sqls);
+        self::assertSame('CREATE MATERIALIZED VIEW user_stats AS SELECT id, count(*) FROM users GROUP BY id', $sqls[0]->toSql());
+        self::assertSame('CREATE UNIQUE INDEX idx_upc_id ON user_stats (id)', $sqls[1]->toSql());
+        self::assertSame('CREATE INDEX idx_upc_gin ON user_stats USING gin (metadata)', $sqls[2]->toSql());
+    }
+
+    public function test_to_sql_generates_materialized_view_with_non_btree_index() : void
+    {
+        $sqls = schema_materialized_view(
+            'user_stats',
+            select(col('id'), agg_count())->from(table('users'))->groupBy(col('id'))->toSql(),
+            indexes: [schema_index('idx_user_stats_gin', ['metadata'], method: IndexMethod::GIN)],
+        )->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('CREATE MATERIALIZED VIEW user_stats AS SELECT id, count(*) FROM users GROUP BY id', $sqls[0]->toSql());
+        self::assertSame('CREATE INDEX idx_user_stats_gin ON user_stats USING gin (metadata)', $sqls[1]->toSql());
+    }
+
+    public function test_to_sql_generates_materialized_view_with_unique_non_btree_index() : void
+    {
+        $sqls = schema_materialized_view(
+            'user_stats',
+            select(col('id'), agg_count())->from(table('users'))->groupBy(col('id'))->toSql(),
+            indexes: [schema_index('idx_user_stats_hash', ['id'], unique: true, method: IndexMethod::HASH)],
+        )->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('CREATE MATERIALIZED VIEW user_stats AS SELECT id, count(*) FROM users GROUP BY id', $sqls[0]->toSql());
+        self::assertSame('CREATE UNIQUE INDEX idx_user_stats_hash ON user_stats USING hash (id)', $sqls[1]->toSql());
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/NoExecutionOrderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/NoExecutionOrderTest.php
new file mode 100644
index 0000000000..5a0cc2206e
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/NoExecutionOrderTest.php
@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{schema_column_integer, schema_primary_key, schema_table};
+
+use Flow\PostgreSql\Schema\NoExecutionOrder;
+use PHPUnit\Framework\TestCase;
+
+final class NoExecutionOrderTest extends TestCase
+{
+    public function test_returns_tables_in_original_order() : void
+    {
+        $tableA = schema_table(
+            'alpha',
+            [schema_column_integer('id')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $tableB = schema_table(
+            'beta',
+            [schema_column_integer('id')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $tableC = schema_table(
+            'gamma',
+            [schema_column_integer('id')],
+            schema_primary_key(['id']),
+            schema: 'public',
+        );
+
+        $result = (new NoExecutionOrder())->order([$tableC, $tableA, $tableB]);
+
+        self::assertSame([$tableC, $tableA, $tableB], $result);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ProcedureTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ProcedureTest.php
new file mode 100644
index 0000000000..52dad9a3b1
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ProcedureTest.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\schema_procedure;
+
+use PHPUnit\Framework\TestCase;
+
+final class ProcedureTest extends TestCase
+{
+    public function test_procedure_construction() : void
+    {
+        $proc = schema_procedure('cleanup_old_records');
+
+        self::assertSame('cleanup_old_records', $proc->name);
+        self::assertSame([], $proc->argumentTypes);
+        self::assertSame('sql', $proc->language);
+        self::assertNull($proc->definition);
+    }
+
+    public function test_procedure_with_arguments() : void
+    {
+        $proc = schema_procedure(
+            'archive_user',
+            argumentTypes: ['integer', 'text'],
+            language: 'plpgsql',
+            definition: 'BEGIN DELETE FROM users WHERE id = $1; END;',
+        );
+
+        self::assertSame(['integer', 'text'], $proc->argumentTypes);
+        self::assertSame('plpgsql', $proc->language);
+        self::assertSame('BEGIN DELETE FROM users WHERE id = $1; END;', $proc->definition);
+    }
+
+    public function test_to_sql_generates_create_procedure() : void
+    {
+        self::assertSame(
+            'CREATE OR REPLACE PROCEDURE archive_user(IN int, IN text) LANGUAGE plpgsql AS $$BEGIN DELETE FROM users WHERE id = $1; END;$$',
+            schema_procedure(
+                'archive_user',
+                argumentTypes: ['integer', 'text'],
+                language: 'plpgsql',
+                definition: 'BEGIN DELETE FROM users WHERE id = $1; END;',
+            )->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_returns_null_when_definition_null() : void
+    {
+        self::assertNull(
+            schema_procedure('cleanup_old_records')->toSql(),
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/SchemaTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/SchemaTest.php
new file mode 100644
index 0000000000..00f8c3b36c
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/SchemaTest.php
@@ -0,0 +1,649 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{
+    agg_count,
+    col,
+    column_type_array,
+    column_type_custom,
+    column_type_integer,
+    eq,
+    literal,
+    schema,
+    schema_check,
+    schema_column,
+    schema_column_big_serial,
+    schema_column_bigint,
+    schema_column_boolean,
+    schema_column_bytea,
+    schema_column_char,
+    schema_column_cidr,
+    schema_column_date,
+    schema_column_double_precision,
+    schema_column_inet,
+    schema_column_integer,
+    schema_column_interval,
+    schema_column_json,
+    schema_column_jsonb,
+    schema_column_macaddr,
+    schema_column_numeric,
+    schema_column_real,
+    schema_column_serial,
+    schema_column_small_serial,
+    schema_column_smallint,
+    schema_column_text,
+    schema_column_time,
+    schema_column_timestamp,
+    schema_column_timestamp_tz,
+    schema_column_uuid,
+    schema_column_varchar,
+    schema_domain,
+    schema_exclude,
+    schema_extension,
+    schema_foreign_key,
+    schema_function,
+    schema_index,
+    schema_materialized_view,
+    schema_primary_key,
+    schema_procedure,
+    schema_sequence,
+    schema_table,
+    schema_trigger,
+    schema_unique,
+    schema_view,
+    select,
+    star,
+    table,
+};
+use Flow\PostgreSql\QueryBuilder\Schema\ReferentialAction;
+use Flow\PostgreSql\Schema\Exception\{SchemaException, TableNotFoundException};
+use Flow\PostgreSql\Schema\{FunctionVolatility, IndexMethod, TriggerEvent, TriggerTiming};
+
+use PHPUnit\Framework\TestCase;
+
+final class SchemaTest extends TestCase
+{
+    public function test_comprehensive_schema_with_all_object_types() : void
+    {
+        $schema = schema(
+            'app',
+            tables: [
+                schema_table(
+                    'users',
+                    [
+                        schema_column_serial('id'),
+                        schema_column_varchar('email', 255, nullable: false),
+                        schema_column_text('name'),
+                        schema_column_boolean('active', default: 'true'),
+                        schema_column_jsonb('metadata'),
+                        schema_column_timestamp_tz('created_at', default: 'now()'),
+                        schema_column_timestamp_tz('updated_at'),
+                    ],
+                    primaryKey: schema_primary_key(['id'], 'users_pkey'),
+                    indexes: [
+                        schema_index('idx_users_email', ['email'], unique: true),
+                        schema_index('idx_users_metadata', ['metadata'], method: IndexMethod::GIN),
+                        schema_index('idx_users_active', ['email'], predicate: 'active = true'),
+                    ],
+                    uniqueConstraints: [schema_unique(['email'], 'uq_users_email')],
+                    checkConstraints: [schema_check("email ~* '^.+@.+$'", 'chk_users_email_format')],
+                    schema: 'app',
+                ),
+                schema_table(
+                    'posts',
+                    [
+                        schema_column_big_serial('id'),
+                        schema_column_integer('user_id', nullable: false),
+                        schema_column_text('title', nullable: false),
+                        schema_column_text('body'),
+                        schema_column_uuid('external_id', default: 'gen_random_uuid()'),
+                        schema_column_timestamp_tz('published_at'),
+                    ],
+                    primaryKey: schema_primary_key(['id']),
+                    foreignKeys: [
+                        schema_foreign_key(
+                            ['user_id'],
+                            'users',
+                            ['id'],
+                            name: 'fk_posts_user_id',
+                            referenceSchema: 'app',
+                            onUpdate: ReferentialAction::NO_ACTION,
+                            onDelete: ReferentialAction::CASCADE,
+                        ),
+                    ],
+                    triggers: [
+                        schema_trigger(
+                            'trg_posts_updated',
+                            'posts',
+                            TriggerTiming::BEFORE,
+                            [TriggerEvent::UPDATE],
+                            'update_timestamp',
+                            forEachRow: true,
+                        ),
+                    ],
+                    schema: 'app',
+                ),
+                schema_table(
+                    'audit_log',
+                    [
+                        schema_column_bigint('id', nullable: false),
+                        schema_column_text('action', nullable: false),
+                        schema_column_inet('ip_address'),
+                        schema_column_bytea('payload'),
+                        schema_column_timestamp('logged_at'),
+                    ],
+                    excludeConstraints: [schema_exclude('USING gist (tsrange WITH &&)', 'excl_audit_overlap')],
+                    schema: 'app',
+                ),
+            ],
+            sequences: [
+                schema_sequence('invoice_number_seq', dataType: 'integer', startValue: 1000, incrementBy: 1),
+            ],
+            views: [
+                schema_view('active_users', select(col('id'), col('email'))->from(table('users', 'app'))->where(eq(col('active'), literal(true)))->toSql()),
+            ],
+            materializedViews: [
+                schema_materialized_view(
+                    'user_post_counts',
+                    select(col('user_id'), agg_count()->as('post_count'))->from(table('posts', 'app'))->groupBy(col('user_id'))->toSql(),
+                    indexes: [schema_index('idx_upc_user_id', ['user_id'], unique: true)],
+                ),
+            ],
+            functions: [
+                schema_function(
+                    'update_timestamp',
+                    'trigger',
+                    language: 'plpgsql',
+                    definition: 'BEGIN NEW.updated_at = now(); RETURN NEW; END;',
+                    volatility: FunctionVolatility::VOLATILE,
+                ),
+            ],
+            procedures: [
+                schema_procedure(
+                    'cleanup_old_posts',
+                    argumentTypes: ['integer'],
+                    language: 'plpgsql',
+                    definition: 'BEGIN DELETE FROM app.posts WHERE published_at < now() - make_interval(days => $1); END;',
+                ),
+            ],
+            domains: [
+                schema_domain(
+                    'positive_int',
+                    column_type_integer(),
+                    nullable: false,
+                    checkConstraints: [schema_check('VALUE > 0', 'chk_positive')],
+                ),
+            ],
+            extensions: [
+                schema_extension('pgcrypto', '1.3'),
+            ],
+        );
+
+        self::assertSame('app', $schema->name);
+        self::assertCount(3, $schema->tables);
+        self::assertCount(1, $schema->sequences);
+        self::assertCount(1, $schema->views);
+        self::assertCount(1, $schema->materializedViews);
+        self::assertCount(1, $schema->functions);
+        self::assertCount(1, $schema->procedures);
+        self::assertCount(1, $schema->domains);
+        self::assertCount(1, $schema->extensions);
+
+        $usersTable = $schema->table('users');
+        self::assertCount(7, $usersTable->columns);
+        self::assertNotNull($usersTable->primaryKey);
+        self::assertCount(3, $usersTable->indexes);
+        self::assertCount(1, $usersTable->uniqueConstraints);
+        self::assertCount(1, $usersTable->checkConstraints);
+
+        $postsTable = $schema->table('posts');
+        self::assertCount(1, $postsTable->foreignKeys);
+        self::assertSame(ReferentialAction::CASCADE, $postsTable->foreignKeys[0]->onDelete);
+        self::assertCount(1, $postsTable->triggers);
+        self::assertTrue($postsTable->triggers[0]->forEachRow);
+
+        $auditTable = $schema->table('audit_log');
+        self::assertCount(1, $auditTable->excludeConstraints);
+    }
+
+    public function test_has_table() : void
+    {
+        $schema = schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ]);
+
+        self::assertTrue($schema->hasTable('users'));
+        self::assertFalse($schema->hasTable('missing'));
+    }
+
+    public function test_merge_empty_schemas() : void
+    {
+        $result = schema('public')->merge(schema('public'));
+
+        self::assertSame('public', $result->name);
+        self::assertSame([], $result->tables);
+        self::assertSame([], $result->sequences);
+        self::assertSame([], $result->views);
+        self::assertSame([], $result->materializedViews);
+        self::assertSame([], $result->functions);
+        self::assertSame([], $result->procedures);
+        self::assertSame([], $result->domains);
+        self::assertSame([], $result->extensions);
+    }
+
+    public function test_merge_schemas_preserves_all_entity_types() : void
+    {
+        $first = schema(
+            'public',
+            tables: [schema_table('users', [schema_column_integer('id', nullable: false)])],
+            sequences: [schema_sequence('seq_a')],
+            extensions: [schema_extension('pgcrypto')],
+        );
+        $second = schema(
+            'public',
+            views: [schema_view('active_users', select(star())->from(table('users'))->toSql())],
+            sequences: [schema_sequence('seq_b')],
+        );
+
+        $result = $first->merge($second);
+
+        self::assertCount(1, $result->tables);
+        self::assertCount(2, $result->sequences);
+        self::assertCount(1, $result->views);
+        self::assertCount(1, $result->extensions);
+    }
+
+    public function test_merge_schemas_same_sequence_later_overrides() : void
+    {
+        $first = schema('public', sequences: [
+            schema_sequence('my_seq', dataType: 'integer', startValue: 1),
+        ]);
+        $second = schema('public', sequences: [
+            schema_sequence('my_seq', dataType: 'bigint', startValue: 100),
+        ]);
+
+        $result = $first->merge($second);
+
+        self::assertCount(1, $result->sequences);
+        self::assertSame('bigint', $result->sequence('my_seq')->dataType);
+        self::assertSame(100, $result->sequence('my_seq')->startValue);
+    }
+
+    public function test_merge_schemas_same_table_later_overrides() : void
+    {
+        $first = schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ]);
+        $second = schema('public', tables: [
+            schema_table('users', [
+                schema_column_integer('id', nullable: false),
+                schema_column_text('name'),
+            ]),
+        ]);
+
+        $result = $first->merge($second);
+
+        self::assertCount(2, $result->table('users')->columns);
+        self::assertSame('name', $result->table('users')->columns[1]->name);
+    }
+
+    public function test_merge_schemas_with_different_tables() : void
+    {
+        $first = schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ]);
+        $second = schema('public', tables: [
+            schema_table('posts', [schema_column_integer('id', nullable: false)]),
+        ]);
+
+        $result = $first->merge($second);
+
+        self::assertSame('public', $result->name);
+        self::assertTrue($result->hasTable('users'));
+        self::assertTrue($result->hasTable('posts'));
+    }
+
+    public function test_schema_column_type_shortcuts_all_types() : void
+    {
+        $table = schema_table('all_types', [
+            schema_column_integer('col_integer'),
+            schema_column_smallint('col_smallint'),
+            schema_column_bigint('col_bigint'),
+            schema_column_serial('col_serial'),
+            schema_column_small_serial('col_smallserial'),
+            schema_column_big_serial('col_bigserial'),
+            schema_column_boolean('col_boolean'),
+            schema_column_text('col_text'),
+            schema_column_varchar('col_varchar', 100),
+            schema_column_char('col_char', 5),
+            schema_column_numeric('col_numeric', 10, 2),
+            schema_column_real('col_real'),
+            schema_column_double_precision('col_double'),
+            schema_column_date('col_date'),
+            schema_column_time('col_time', 3),
+            schema_column_timestamp('col_timestamp'),
+            schema_column_timestamp_tz('col_timestamptz', 6),
+            schema_column_interval('col_interval'),
+            schema_column_uuid('col_uuid'),
+            schema_column_json('col_json'),
+            schema_column_jsonb('col_jsonb'),
+            schema_column_bytea('col_bytea'),
+            schema_column_inet('col_inet'),
+            schema_column_cidr('col_cidr'),
+            schema_column_macaddr('col_macaddr'),
+            schema_column('col_array', column_type_array(column_type_integer())),
+            schema_column('col_custom', column_type_custom('hstore')),
+        ]);
+
+        self::assertCount(27, $table->columns);
+        self::assertFalse($table->column('col_serial')->nullable);
+        self::assertFalse($table->column('col_smallserial')->nullable);
+        self::assertFalse($table->column('col_bigserial')->nullable);
+        self::assertTrue($table->column('col_text')->nullable);
+    }
+
+    public function test_schema_construction() : void
+    {
+        $schema = schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ]);
+
+        self::assertSame('public', $schema->name);
+        self::assertCount(1, $schema->tables);
+    }
+
+    public function test_schema_empty() : void
+    {
+        $s = schema('public');
+
+        self::assertSame([], $s->tables);
+        self::assertSame([], $s->sequences);
+        self::assertSame([], $s->views);
+        self::assertSame([], $s->materializedViews);
+        self::assertSame([], $s->functions);
+        self::assertSame([], $s->procedures);
+        self::assertSame([], $s->domains);
+        self::assertSame([], $s->extensions);
+    }
+
+    public function test_schema_with_domains() : void
+    {
+        $s = schema('public', domains: [
+            schema_domain('email', column_type_custom('text'), checkConstraints: [
+                schema_check("VALUE ~* '^.+@.+$'"),
+            ]),
+        ]);
+
+        self::assertCount(1, $s->domains);
+        self::assertCount(1, $s->domains[0]->checkConstraints);
+    }
+
+    public function test_schema_with_extensions() : void
+    {
+        $s = schema('public', extensions: [
+            schema_extension('uuid-ossp', '1.1'),
+        ]);
+
+        self::assertCount(1, $s->extensions);
+        self::assertSame('uuid-ossp', $s->extensions[0]->name);
+        self::assertSame('1.1', $s->extensions[0]->version);
+    }
+
+    public function test_schema_with_functions() : void
+    {
+        $s = schema('public', functions: [
+            schema_function('add', 'integer', argumentTypes: ['integer', 'integer'], isStrict: true, volatility: FunctionVolatility::IMMUTABLE),
+        ]);
+
+        self::assertCount(1, $s->functions);
+        self::assertTrue($s->functions[0]->isStrict);
+        self::assertSame(FunctionVolatility::IMMUTABLE, $s->functions[0]->volatility);
+    }
+
+    public function test_schema_with_materialized_views() : void
+    {
+        $s = schema('public', materializedViews: [
+            schema_materialized_view(
+                'stats',
+                select(agg_count())->from(table('users'))->toSql(),
+                indexes: [schema_index('idx_stats', ['count'])],
+            ),
+        ]);
+
+        self::assertCount(1, $s->materializedViews);
+        self::assertCount(1, $s->materializedViews[0]->indexes);
+    }
+
+    public function test_schema_with_procedures() : void
+    {
+        $s = schema('public', procedures: [
+            schema_procedure('cleanup', argumentTypes: ['integer'], language: 'plpgsql'),
+        ]);
+
+        self::assertCount(1, $s->procedures);
+        self::assertSame('plpgsql', $s->procedures[0]->language);
+    }
+
+    public function test_schema_with_sequences() : void
+    {
+        $s = schema('public', sequences: [
+            schema_sequence('users_id_seq'),
+        ]);
+
+        self::assertTrue($s->hasSequence('users_id_seq'));
+        self::assertFalse($s->hasSequence('missing'));
+        self::assertSame('users_id_seq', $s->sequence('users_id_seq')->name);
+    }
+
+    public function test_schema_with_views() : void
+    {
+        $s = schema('public', views: [
+            schema_view('active_users', select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql(), isUpdatable: true),
+        ]);
+
+        self::assertCount(1, $s->views);
+        self::assertTrue($s->views[0]->isUpdatable);
+    }
+
+    public function test_sequence_not_found_throws() : void
+    {
+        $this->expectException(SchemaException::class);
+        schema('public')->sequence('missing');
+    }
+
+    public function test_table_lookup() : void
+    {
+        $s = schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+        ]);
+
+        self::assertSame('users', $s->table('users')->name);
+    }
+
+    public function test_table_names() : void
+    {
+        $s = schema('public', tables: [
+            schema_table('users', [schema_column_integer('id', nullable: false)]),
+            schema_table('posts', [schema_column_integer('id', nullable: false)]),
+        ]);
+
+        self::assertSame(['users', 'posts'], $s->tableNames());
+    }
+
+    public function test_table_not_found_throws() : void
+    {
+        $this->expectException(TableNotFoundException::class);
+        schema('public')->table('missing');
+    }
+
+    public function test_table_with_all_constraint_types() : void
+    {
+        $table = schema_table(
+            'orders',
+            [
+                schema_column_serial('id'),
+                schema_column_integer('user_id', nullable: false),
+                schema_column_numeric('amount', 10, 2, nullable: false),
+                schema_column_varchar('status', 50, default: "'pending'"),
+            ],
+            primaryKey: schema_primary_key(['id'], 'orders_pkey'),
+            foreignKeys: [
+                schema_foreign_key(
+                    ['user_id'],
+                    'users',
+                    ['id'],
+                    name: 'fk_orders_user',
+                    onDelete: ReferentialAction::CASCADE,
+                    deferrable: true,
+                    initiallyDeferred: true,
+                ),
+            ],
+            uniqueConstraints: [schema_unique(['user_id', 'status'], 'uq_user_status', nullsNotDistinct: true)],
+            checkConstraints: [schema_check('amount > 0', 'chk_positive_amount', noInherit: true)],
+            excludeConstraints: [schema_exclude('USING gist (tsrange WITH &&)')],
+        );
+
+        self::assertNotNull($table->primaryKey);
+        self::assertSame('orders_pkey', $table->primaryKey->name);
+        self::assertCount(1, $table->foreignKeys);
+        self::assertTrue($table->foreignKeys[0]->deferrable);
+        self::assertTrue($table->foreignKeys[0]->initiallyDeferred);
+        self::assertCount(1, $table->uniqueConstraints);
+        self::assertTrue($table->uniqueConstraints[0]->nullsNotDistinct);
+        self::assertCount(1, $table->checkConstraints);
+        self::assertTrue($table->checkConstraints[0]->noInherit);
+        self::assertCount(1, $table->excludeConstraints);
+    }
+
+    public function test_table_with_multiple_triggers_and_events() : void
+    {
+        $table = schema_table(
+            'orders',
+            [schema_column_serial('id')],
+            triggers: [
+                schema_trigger('trg_before_insert', 'orders', TriggerTiming::BEFORE, [TriggerEvent::INSERT], 'validate_fn', forEachRow: true),
+                schema_trigger('trg_after_changes', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT, TriggerEvent::UPDATE, TriggerEvent::DELETE], 'audit_fn', whenCondition: 'NEW.amount > 100'),
+                schema_trigger('trg_truncate', 'orders', TriggerTiming::AFTER, [TriggerEvent::TRUNCATE], 'cleanup_fn'),
+            ],
+        );
+
+        self::assertCount(3, $table->triggers);
+        self::assertSame(TriggerTiming::BEFORE, $table->triggers[0]->timing);
+        self::assertCount(3, $table->triggers[1]->events);
+        self::assertSame('NEW.amount > 100', $table->triggers[1]->whenCondition);
+        self::assertFalse($table->triggers[2]->forEachRow);
+    }
+
+    public function test_to_sql_includes_all_object_types() : void
+    {
+        $sqls = schema(
+            'public',
+            tables: [
+                schema_table('users', [schema_column_integer('id', nullable: false)]),
+            ],
+            sequences: [
+                schema_sequence('users_id_seq'),
+            ],
+            views: [
+                schema_view('active_users', select(star())->from(table('users'))->toSql()),
+            ],
+            materializedViews: [
+                schema_materialized_view(
+                    'user_counts',
+                    select(agg_count())->from(table('users'))->toSql(),
+                ),
+            ],
+            functions: [
+                schema_function(
+                    'get_one',
+                    'integer',
+                    language: 'sql',
+                    definition: 'SELECT 1',
+                ),
+            ],
+            procedures: [
+                schema_procedure(
+                    'do_cleanup',
+                    language: 'plpgsql',
+                    definition: 'BEGIN END;',
+                ),
+            ],
+            domains: [
+                schema_domain('positive_int', column_type_integer(), nullable: false),
+            ],
+            extensions: [
+                schema_extension('pgcrypto'),
+            ],
+        )->toSql();
+
+        self::assertSame('CREATE EXTENSION pgcrypto', $sqls[0]->toSql());
+        self::assertSame('CREATE DOMAIN positive_int AS int NOT NULL', $sqls[1]->toSql());
+        self::assertSame('CREATE SEQUENCE users_id_seq AS bigint START 1 INCREMENT 1 MINVALUE 1 CACHE 1 NO MAXVALUE', $sqls[2]->toSql());
+        self::assertSame('CREATE OR REPLACE FUNCTION get_one() RETURNS int LANGUAGE sql AS $$SELECT 1$$', $sqls[3]->toSql());
+        self::assertSame('CREATE OR REPLACE PROCEDURE do_cleanup() LANGUAGE plpgsql AS $$BEGIN END;$$', $sqls[4]->toSql());
+        self::assertSame('CREATE TABLE public.users (id int NOT NULL)', $sqls[5]->toSql());
+        self::assertSame('CREATE VIEW active_users AS SELECT * FROM users', $sqls[6]->toSql());
+        self::assertSame('CREATE MATERIALIZED VIEW user_counts AS SELECT count(*) FROM users', $sqls[7]->toSql());
+        self::assertCount(8, $sqls);
+    }
+
+    public function test_to_sql_includes_materialized_view_with_indexes() : void
+    {
+        $sqls = schema(
+            'public',
+            materializedViews: [
+                schema_materialized_view(
+                    'user_counts',
+                    select(col('id'), agg_count())->from(table('users'))->groupBy(col('id'))->toSql(),
+                    indexes: [schema_index('idx_uc_id', ['id'], unique: true)],
+                ),
+            ],
+        )->toSql();
+
+        self::assertSame('CREATE MATERIALIZED VIEW user_counts AS SELECT id, count(*) FROM users GROUP BY id', $sqls[0]->toSql());
+        self::assertSame('CREATE UNIQUE INDEX idx_uc_id ON user_counts (id)', $sqls[1]->toSql());
+        self::assertCount(2, $sqls);
+    }
+
+    public function test_to_sql_mixes_functions_with_and_without_definitions() : void
+    {
+        $sqls = schema(
+            'public',
+            functions: [
+                schema_function('builtin_fn', 'integer'),
+                schema_function('my_fn', 'integer', language: 'sql', definition: 'SELECT 42'),
+                schema_function('another_builtin', 'text'),
+            ],
+        )->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame('CREATE OR REPLACE FUNCTION my_fn() RETURNS int LANGUAGE sql AS $$SELECT 42$$', $sqls[0]->toSql());
+    }
+
+    public function test_to_sql_skips_function_with_null_definition() : void
+    {
+        $sqls = schema(
+            'public',
+            functions: [
+                schema_function('builtin_fn', 'integer'),
+            ],
+        )->toSql();
+
+        self::assertSame([], $sqls);
+    }
+
+    public function test_to_sql_skips_procedure_with_null_definition() : void
+    {
+        $sqls = schema(
+            'public',
+            procedures: [
+                schema_procedure('builtin_proc'),
+            ],
+        )->toSql();
+
+        self::assertSame([], $sqls);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/SequenceTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/SequenceTest.php
new file mode 100644
index 0000000000..d95d4ed745
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/SequenceTest.php
@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\schema_sequence;
+
+use PHPUnit\Framework\TestCase;
+
+final class SequenceTest extends TestCase
+{
+    public function test_sequence_construction() : void
+    {
+        $seq = schema_sequence('users_id_seq');
+
+        self::assertSame('users_id_seq', $seq->name);
+        self::assertSame('bigint', $seq->dataType);
+        self::assertSame(1, $seq->startValue);
+    }
+
+    public function test_sequence_owned_by() : void
+    {
+        $seq = schema_sequence('users_id_seq', ownedByTable: 'users', ownedByColumn: 'id');
+
+        self::assertSame('users', $seq->ownedByTable);
+        self::assertSame('id', $seq->ownedByColumn);
+    }
+
+    public function test_sequence_with_all_options() : void
+    {
+        $seq = schema_sequence('custom_seq', dataType: 'integer', startValue: 100, minValue: 1, maxValue: 10000, incrementBy: 5, cycle: true, cacheValue: 10);
+
+        self::assertSame('integer', $seq->dataType);
+        self::assertSame(100, $seq->startValue);
+        self::assertSame(10000, $seq->maxValue);
+        self::assertSame(5, $seq->incrementBy);
+        self::assertTrue($seq->cycle);
+        self::assertSame(10, $seq->cacheValue);
+    }
+
+    public function test_to_sql_generates_create_sequence() : void
+    {
+        self::assertSame(
+            'CREATE SEQUENCE users_id_seq AS bigint START 1 INCREMENT 1 MINVALUE 1 CACHE 1 NO MAXVALUE',
+            schema_sequence('users_id_seq')->toSql()->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_create_sequence_with_all_options() : void
+    {
+        self::assertSame(
+            'CREATE SEQUENCE custom_seq AS int START 100 INCREMENT 5 MINVALUE 1 CACHE 10 MAXVALUE 10000 CYCLE OWNED BY users.id',
+            schema_sequence('custom_seq', dataType: 'integer', startValue: 100, minValue: 1, maxValue: 10000, incrementBy: 5, cycle: true, cacheValue: 10, ownedByTable: 'users', ownedByColumn: 'id')->toSql()->toSql(),
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/TableTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/TableTest.php
new file mode 100644
index 0000000000..24e4432539
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/TableTest.php
@@ -0,0 +1,809 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{column_type_integer, column_type_jsonb, column_type_text, column_type_timestamptz, column_type_varchar, schema_check, schema_column, schema_foreign_key, schema_index, schema_primary_key, schema_table, schema_trigger, schema_unique};
+use Flow\PostgreSql\QueryBuilder\Schema\ReferentialAction;
+use Flow\PostgreSql\Schema\Exception\ColumnNotFoundException;
+use Flow\PostgreSql\Schema\{IdentityGeneration, IndexMethod, PartitionStrategy, TriggerEvent, TriggerTiming};
+
+use PHPUnit\Framework\TestCase;
+
+final class TableTest extends TestCase
+{
+    public function test_column_lookup() : void
+    {
+        $table = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('name', column_type_varchar(255)),
+        ]);
+
+        self::assertSame('name', $table->column('name')->name);
+    }
+
+    public function test_column_names() : void
+    {
+        $table = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('name', column_type_varchar(255)),
+        ]);
+
+        self::assertSame(['id', 'name'], $table->columnNames());
+    }
+
+    public function test_column_not_found_throws() : void
+    {
+        $table = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ]);
+
+        $this->expectException(ColumnNotFoundException::class);
+        $table->column('missing');
+    }
+
+    public function test_has_column() : void
+    {
+        $table = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ]);
+
+        self::assertTrue($table->hasColumn('id'));
+        self::assertFalse($table->hasColumn('missing'));
+    }
+
+    public function test_qualified_name() : void
+    {
+        $table = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ]);
+
+        self::assertSame('public.users', $table->qualifiedName());
+    }
+
+    public function test_table_construction() : void
+    {
+        $table = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('name', column_type_varchar(255)),
+        ]);
+
+        self::assertSame('public', $table->schema);
+        self::assertSame('users', $table->name);
+        self::assertCount(2, $table->columns);
+    }
+
+    public function test_table_with_foreign_keys() : void
+    {
+        $table = schema_table('posts', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('user_id', column_type_integer(), nullable: false),
+        ], foreignKeys: [
+            schema_foreign_key(['user_id'], 'users', ['id']),
+        ]);
+
+        self::assertCount(1, $table->foreignKeys);
+        self::assertSame('users', $table->foreignKeys[0]->referenceTable);
+    }
+
+    public function test_table_with_indexes() : void
+    {
+        $table = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('email', column_type_varchar(255)),
+        ], indexes: [
+            schema_index('idx_users_email', ['email'], unique: true),
+        ]);
+
+        self::assertCount(1, $table->indexes);
+        self::assertSame('idx_users_email', $table->indexes[0]->name);
+        self::assertTrue($table->indexes[0]->unique);
+    }
+
+    public function test_table_with_primary_key() : void
+    {
+        $table = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], primaryKey: schema_primary_key(['id']));
+
+        self::assertNotNull($table->primaryKey);
+        self::assertSame(['id'], $table->primaryKey->columns);
+    }
+
+    public function test_table_with_triggers() : void
+    {
+        $table = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('updated_at', column_type_timestamptz()),
+        ], triggers: [
+            schema_trigger('trg_update_timestamp', 'users', TriggerTiming::BEFORE, [TriggerEvent::UPDATE], 'update_timestamp', forEachRow: true),
+        ]);
+
+        self::assertCount(1, $table->triggers);
+        self::assertSame('trg_update_timestamp', $table->triggers[0]->name);
+    }
+
+    public function test_to_sql_generates_create_table() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('name', column_type_varchar(255)),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.users (id int NOT NULL, name varchar(255))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_create_table_with_indexes() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('email', column_type_varchar(255)),
+        ], indexes: [
+            schema_index('idx_users_email', ['email'], unique: true),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame('CREATE TABLE public.users (id int NOT NULL, email varchar(255))', $sqls[0]->toSql());
+        self::assertSame('CREATE UNIQUE INDEX idx_users_email ON public.users (email)', $sqls[1]->toSql());
+    }
+
+    public function test_to_sql_generates_create_table_with_primary_key() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], primaryKey: schema_primary_key(['id']))->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.users (id int NOT NULL, PRIMARY KEY (id))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_inherits() : void
+    {
+        $sqls = schema_table('employees', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('name', column_type_varchar(255)),
+        ], inherits: ['persons'])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.employees (id int NOT NULL, name varchar(255)) INHERITS (persons)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_partition_by_hash() : void
+    {
+        $sqls = schema_table('events', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], partitionStrategy: PartitionStrategy::HASH, partitionColumns: ['id'])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.events (id int NOT NULL) PARTITION BY HASH (id)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_partition_by_list() : void
+    {
+        $sqls = schema_table('events', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('region', column_type_varchar(50), nullable: false),
+        ], partitionStrategy: PartitionStrategy::LIST, partitionColumns: ['region'])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.events (id int NOT NULL, region varchar(50) NOT NULL) PARTITION BY LIST (region)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_partition_by_range() : void
+    {
+        $sqls = schema_table('events', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('name', column_type_varchar(255), nullable: false),
+        ], partitionStrategy: PartitionStrategy::RANGE, partitionColumns: ['name'])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.events (id int NOT NULL, name varchar(255) NOT NULL) PARTITION BY RANGE (name)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_partition_with_tablespace() : void
+    {
+        $sqls = schema_table('events', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('name', column_type_varchar(255), nullable: false),
+        ], partitionStrategy: PartitionStrategy::RANGE, partitionColumns: ['name'], tablespace: 'fast_storage')->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.events (id int NOT NULL, name varchar(255) NOT NULL) PARTITION BY RANGE (name) TABLESPACE fast_storage',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_tablespace() : void
+    {
+        $sqls = schema_table('events', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], tablespace: 'fast_storage')->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.events (id int NOT NULL) TABLESPACE fast_storage',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_generates_unlogged_table() : void
+    {
+        $sqls = schema_table('events', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('name', column_type_varchar(255)),
+        ], unlogged: true)->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE UNLOGGED TABLE public.events (id int NOT NULL, name varchar(255))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_all_constraint_types() : void
+    {
+        $sqls = schema_table(
+            'orders',
+            [
+                schema_column('id', column_type_integer(), nullable: false),
+                schema_column('user_id', column_type_integer(), nullable: false),
+                schema_column('amount', column_type_integer(), nullable: false),
+                schema_column('email', column_type_varchar(255), nullable: false),
+            ],
+            primaryKey: schema_primary_key(['id']),
+            indexes: [
+                schema_index('idx_orders_user_id', ['user_id']),
+            ],
+            foreignKeys: [
+                schema_foreign_key(['user_id'], 'users', ['id'], onDelete: ReferentialAction::CASCADE),
+            ],
+            uniqueConstraints: [
+                schema_unique(['email']),
+            ],
+            checkConstraints: [
+                schema_check('amount > 0'),
+            ],
+            triggers: [
+                schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_function'),
+            ],
+        )->toSql();
+
+        self::assertCount(3, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.orders (id int NOT NULL, user_id int NOT NULL, amount int NOT NULL, email varchar(255) NOT NULL, PRIMARY KEY (id), UNIQUE (email), CHECK (amount > 0), FOREIGN KEY (user_id) REFERENCES public.users (id) ON DELETE CASCADE)',
+            $sqls[0]->toSql(),
+        );
+        self::assertSame(
+            'CREATE INDEX idx_orders_user_id ON public.orders (user_id)',
+            $sqls[1]->toSql(),
+        );
+        self::assertSame(
+            'CREATE TRIGGER trg_audit AFTER INSERT ON public.orders EXECUTE FUNCTION audit_function()',
+            $sqls[2]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_check_constraint() : void
+    {
+        $sqls = schema_table('products', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('price', column_type_integer(), nullable: false),
+        ], checkConstraints: [
+            schema_check('price > 0'),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.products (id int NOT NULL, price int NOT NULL, CHECK (price > 0))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_check_constraint_no_inherit() : void
+    {
+        $sqls = schema_table('products', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('price', column_type_integer(), nullable: false),
+        ], checkConstraints: [
+            schema_check('price > 0', noInherit: true),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.products (id int NOT NULL, price int NOT NULL, CHECK (price > 0) NO INHERIT)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_column_default() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('status', column_type_varchar(50), default: "'active'"),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            "CREATE TABLE public.users (id int NOT NULL, status varchar(50) DEFAULT 'active')",
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_column_default_numeric() : void
+    {
+        $sqls = schema_table('products', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('quantity', column_type_integer(), default: '0'),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.products (id int NOT NULL, quantity int DEFAULT 0)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_column_generated_expression() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('first_name', column_type_varchar(100)),
+            schema_column('last_name', column_type_varchar(100)),
+            schema_column('full_name', column_type_text(), isGenerated: true, generationExpression: "first_name || ' ' || last_name"),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            "CREATE TABLE public.users (first_name varchar(100), last_name varchar(100), full_name pg_catalog.text GENERATED ALWAYS AS ((first_name || ' ') || last_name) STORED)",
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_column_identity_always() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false, isIdentity: true, identityGeneration: IdentityGeneration::ALWAYS),
+            schema_column('name', column_type_varchar(255)),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.users (id int NOT NULL GENERATED ALWAYS AS IDENTITY, name varchar(255))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_composite_unique_constraint() : void
+    {
+        $sqls = schema_table('user_roles', [
+            schema_column('user_id', column_type_integer(), nullable: false),
+            schema_column('role_id', column_type_integer(), nullable: false),
+        ], uniqueConstraints: [
+            schema_unique(['user_id', 'role_id'], name: 'uq_user_role'),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.user_roles (user_id int NOT NULL, role_id int NOT NULL, CONSTRAINT uq_user_role UNIQUE (user_id, role_id))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_custom_schema() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], schema: 'myschema')->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE myschema.users (id int NOT NULL)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_deferrable_foreign_key() : void
+    {
+        $sqls = schema_table('orders', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('user_id', column_type_integer(), nullable: false),
+        ], foreignKeys: [
+            schema_foreign_key(
+                ['user_id'],
+                'users',
+                ['id'],
+                deferrable: true,
+                initiallyDeferred: true,
+            ),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.orders (id int NOT NULL, user_id int NOT NULL, FOREIGN KEY (user_id) REFERENCES public.users (id) DEFERRABLE INITIALLY DEFERRED)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_foreign_key_constraint() : void
+    {
+        $sqls = schema_table('orders', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('user_id', column_type_integer(), nullable: false),
+        ], foreignKeys: [
+            schema_foreign_key(
+                ['user_id'],
+                'users',
+                ['id'],
+                onDelete: ReferentialAction::CASCADE,
+                onUpdate: ReferentialAction::RESTRICT,
+            ),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.orders (id int NOT NULL, user_id int NOT NULL, FOREIGN KEY (user_id) REFERENCES public.users (id) ON UPDATE RESTRICT ON DELETE CASCADE)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_foreign_key_custom_reference_schema() : void
+    {
+        $sqls = schema_table('orders', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('product_id', column_type_integer(), nullable: false),
+        ], foreignKeys: [
+            schema_foreign_key(
+                ['product_id'],
+                'products',
+                ['id'],
+                referenceSchema: 'catalog',
+            ),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.orders (id int NOT NULL, product_id int NOT NULL, FOREIGN KEY (product_id) REFERENCES catalog.products (id))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_foreign_key_default_actions() : void
+    {
+        $sqls = schema_table('orders', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('user_id', column_type_integer(), nullable: false),
+        ], foreignKeys: [
+            schema_foreign_key(['user_id'], 'users', ['id']),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.orders (id int NOT NULL, user_id int NOT NULL, FOREIGN KEY (user_id) REFERENCES public.users (id))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_foreign_key_set_null_on_delete() : void
+    {
+        $sqls = schema_table('comments', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('user_id', column_type_integer()),
+        ], foreignKeys: [
+            schema_foreign_key(
+                ['user_id'],
+                'users',
+                ['id'],
+                onDelete: ReferentialAction::SET_NULL,
+            ),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.comments (id int NOT NULL, user_id int, FOREIGN KEY (user_id) REFERENCES public.users (id) ON DELETE SET NULL)',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_gin_index() : void
+    {
+        $sqls = schema_table('documents', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('metadata', column_type_jsonb()),
+        ], indexes: [
+            schema_index('idx_documents_metadata', ['metadata'], method: IndexMethod::GIN),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE INDEX idx_documents_metadata ON public.documents USING gin (metadata)',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_gist_index() : void
+    {
+        $sqls = schema_table('events', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('range_col', column_type_text()),
+        ], indexes: [
+            schema_index('idx_events_range', ['range_col'], method: IndexMethod::GIST),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE INDEX idx_events_range ON public.events USING gist (range_col)',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_hash_index() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('email', column_type_varchar(255)),
+        ], indexes: [
+            schema_index('idx_users_email_hash', ['email'], method: IndexMethod::HASH),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE INDEX idx_users_email_hash ON public.users USING hash (email)',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_multiple_indexes() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('email', column_type_varchar(255)),
+            schema_column('name', column_type_varchar(255)),
+        ], indexes: [
+            schema_index('idx_users_email', ['email'], unique: true),
+            schema_index('idx_users_name', ['name']),
+        ])->toSql();
+
+        self::assertCount(3, $sqls);
+        self::assertSame('CREATE UNIQUE INDEX idx_users_email ON public.users (email)', $sqls[1]->toSql());
+        self::assertSame('CREATE INDEX idx_users_name ON public.users (name)', $sqls[2]->toSql());
+    }
+
+    public function test_to_sql_with_multiple_triggers() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], triggers: [
+            schema_trigger('trg_before', 'users', TriggerTiming::BEFORE, [TriggerEvent::INSERT], 'before_func', forEachRow: true),
+            schema_trigger('trg_after', 'users', TriggerTiming::AFTER, [TriggerEvent::UPDATE], 'after_func'),
+        ])->toSql();
+
+        self::assertCount(3, $sqls);
+        self::assertSame('CREATE TRIGGER trg_before BEFORE INSERT ON public.users FOR EACH ROW EXECUTE FUNCTION before_func()', $sqls[1]->toSql());
+        self::assertSame('CREATE TRIGGER trg_after AFTER UPDATE ON public.users EXECUTE FUNCTION after_func()', $sqls[2]->toSql());
+    }
+
+    public function test_to_sql_with_named_check_constraint() : void
+    {
+        $sqls = schema_table('products', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('price', column_type_integer(), nullable: false),
+        ], checkConstraints: [
+            schema_check('price > 0', name: 'positive_price'),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.products (id int NOT NULL, price int NOT NULL, CONSTRAINT positive_price CHECK (price > 0))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_named_foreign_key_constraint() : void
+    {
+        $sqls = schema_table('orders', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('user_id', column_type_integer(), nullable: false),
+        ], foreignKeys: [
+            schema_foreign_key(
+                ['user_id'],
+                'users',
+                ['id'],
+                name: 'fk_orders_user_id',
+            ),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.orders (id int NOT NULL, user_id int NOT NULL, CONSTRAINT fk_orders_user_id FOREIGN KEY (user_id) REFERENCES public.users (id))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_named_primary_key() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], primaryKey: schema_primary_key(['id'], name: 'pk_users'))->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.users (id int NOT NULL, CONSTRAINT pk_users PRIMARY KEY (id))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_named_unique_constraint() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('email', column_type_varchar(255), nullable: false),
+        ], uniqueConstraints: [
+            schema_unique(['email'], name: 'uq_users_email'),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.users (id int NOT NULL, email varchar(255) NOT NULL, CONSTRAINT uq_users_email UNIQUE (email))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_non_unique_index() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('name', column_type_varchar(255)),
+        ], indexes: [
+            schema_index('idx_users_name', ['name']),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE INDEX idx_users_name ON public.users (name)',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_trigger_after_insert() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_function'),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE TRIGGER trg_audit AFTER INSERT ON public.users EXECUTE FUNCTION audit_function()',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_trigger_before_delete() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], triggers: [
+            schema_trigger('trg_prevent_delete', 'users', TriggerTiming::BEFORE, [TriggerEvent::DELETE], 'prevent_delete_func', forEachRow: true),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE TRIGGER trg_prevent_delete BEFORE DELETE ON public.users FOR EACH ROW EXECUTE FUNCTION prevent_delete_func()',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_trigger_before_update_for_each_row() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('updated_at', column_type_timestamptz()),
+        ], triggers: [
+            schema_trigger('trg_update_timestamp', 'users', TriggerTiming::BEFORE, [TriggerEvent::UPDATE], 'update_timestamp', forEachRow: true),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE TRIGGER trg_update_timestamp BEFORE UPDATE ON public.users FOR EACH ROW EXECUTE FUNCTION update_timestamp()',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_trigger_instead_of() : void
+    {
+        $sqls = schema_table('users_view', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], triggers: [
+            schema_trigger('trg_view_insert', 'users_view', TriggerTiming::INSTEAD_OF, [TriggerEvent::INSERT], 'insert_to_users', forEachRow: true),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE TRIGGER trg_view_insert INSTEAD OF INSERT ON public.users_view FOR EACH ROW EXECUTE FUNCTION insert_to_users()',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_trigger_multiple_events() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], triggers: [
+            schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT, TriggerEvent::UPDATE], 'audit_function', forEachRow: true),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE TRIGGER trg_audit AFTER INSERT OR UPDATE ON public.users FOR EACH ROW EXECUTE FUNCTION audit_function()',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_trigger_without_for_each_row() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+        ], triggers: [
+            schema_trigger('trg_statement', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'process_batch'),
+        ])->toSql();
+
+        self::assertCount(2, $sqls);
+        self::assertSame(
+            'CREATE TRIGGER trg_statement AFTER INSERT ON public.users EXECUTE FUNCTION process_batch()',
+            $sqls[1]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_unique_constraint() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('email', column_type_varchar(255), nullable: false),
+        ], uniqueConstraints: [
+            schema_unique(['email']),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.users (id int NOT NULL, email varchar(255) NOT NULL, UNIQUE (email))',
+            $sqls[0]->toSql(),
+        );
+    }
+
+    public function test_to_sql_with_unique_constraint_nulls_not_distinct() : void
+    {
+        $sqls = schema_table('users', [
+            schema_column('id', column_type_integer(), nullable: false),
+            schema_column('email', column_type_varchar(255)),
+        ], uniqueConstraints: [
+            schema_unique(['email'], nullsNotDistinct: true),
+        ])->toSql();
+
+        self::assertCount(1, $sqls);
+        self::assertSame(
+            'CREATE TABLE public.users (id int NOT NULL, email varchar(255), UNIQUE NULLS NOT DISTINCT (email))',
+            $sqls[0]->toSql(),
+        );
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/TriggerTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/TriggerTest.php
new file mode 100644
index 0000000000..bf49b4cd23
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/TriggerTest.php
@@ -0,0 +1,121 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\schema_trigger;
+use Flow\PostgreSql\Schema\{TriggerEvent, TriggerTiming};
+
+use PHPUnit\Framework\TestCase;
+
+final class TriggerTest extends TestCase
+{
+    public function test_is_equal_for_identical_triggers() : void
+    {
+        $a = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: true, whenCondition: 'NEW.x > 0');
+        $b = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: true, whenCondition: 'NEW.x > 0');
+
+        self::assertTrue($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_events_differ() : void
+    {
+        $a = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+        $b = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::UPDATE], 'audit_fn');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_function_name_differs() : void
+    {
+        $a = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'fn_a');
+        $b = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'fn_b');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_name_differs() : void
+    {
+        $a = schema_trigger('trg_a', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+        $b = schema_trigger('trg_b', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_table_name_differs() : void
+    {
+        $a = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+        $b = schema_trigger('trg_audit', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_returns_false_when_timing_differs() : void
+    {
+        $a = schema_trigger('trg_audit', 'orders', TriggerTiming::BEFORE, [TriggerEvent::INSERT], 'audit_fn');
+        $b = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+
+        self::assertFalse($a->isEqual($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_for_each_row_differs() : void
+    {
+        $a = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: true);
+        $b = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: false);
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_timing_differs() : void
+    {
+        $a = schema_trigger('trg_audit', 'orders', TriggerTiming::BEFORE, [TriggerEvent::INSERT], 'audit_fn');
+        $b = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn');
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_false_when_when_condition_differs() : void
+    {
+        $a = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', whenCondition: 'NEW.x > 0');
+        $b = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', whenCondition: 'NEW.x > 100');
+
+        self::assertFalse($a->isEqualStructure($b));
+    }
+
+    public function test_is_equal_structure_returns_true_when_only_name_and_table_differ() : void
+    {
+        $a = schema_trigger('trg_a', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: true, whenCondition: 'NEW.x > 0');
+        $b = schema_trigger('trg_b', 'users', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_fn', forEachRow: true, whenCondition: 'NEW.x > 0');
+
+        self::assertTrue($a->isEqualStructure($b));
+    }
+
+    public function test_trigger_construction() : void
+    {
+        $trigger = schema_trigger('trg_audit', 'orders', TriggerTiming::AFTER, [TriggerEvent::INSERT], 'audit_function');
+
+        self::assertSame('trg_audit', $trigger->name);
+        self::assertSame('orders', $trigger->tableName);
+        self::assertSame(TriggerTiming::AFTER, $trigger->timing);
+        self::assertSame([TriggerEvent::INSERT], $trigger->events);
+        self::assertSame('audit_function', $trigger->functionName);
+        self::assertFalse($trigger->forEachRow);
+        self::assertNull($trigger->whenCondition);
+    }
+
+    public function test_trigger_for_each_row() : void
+    {
+        $trigger = schema_trigger('trg_update', 'users', TriggerTiming::BEFORE, [TriggerEvent::UPDATE], 'update_fn', forEachRow: true);
+
+        self::assertTrue($trigger->forEachRow);
+    }
+
+    public function test_trigger_with_when_condition() : void
+    {
+        $trigger = schema_trigger('trg_check', 'orders', TriggerTiming::BEFORE, [TriggerEvent::INSERT, TriggerEvent::UPDATE], 'check_fn', whenCondition: 'NEW.amount > 1000');
+
+        self::assertSame('NEW.amount > 1000', $trigger->whenCondition);
+        self::assertCount(2, $trigger->events);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ViewDependencyOrderTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ViewDependencyOrderTest.php
new file mode 100644
index 0000000000..18523c93cf
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ViewDependencyOrderTest.php
@@ -0,0 +1,88 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use Flow\PostgreSql\Schema\Exception\SchemaException;
+use Flow\PostgreSql\Schema\{View, ViewDependencyOrder};
+use PHPUnit\Framework\TestCase;
+
+final class ViewDependencyOrderTest extends TestCase
+{
+    public function test_circular_dependency_throws_exception() : void
+    {
+        $viewA = new View('view_a', 'SELECT * FROM view_b');
+        $viewB = new View('view_b', 'SELECT * FROM view_a');
+
+        $this->expectException(SchemaException::class);
+        $this->expectExceptionMessage('Circular view dependency');
+
+        (new ViewDependencyOrder(new \Flow\PostgreSql\Parser()))->order([$viewA, $viewB]);
+    }
+
+    public function test_empty_list() : void
+    {
+        self::assertSame([], (new ViewDependencyOrder(new \Flow\PostgreSql\Parser()))->order([]));
+    }
+
+    public function test_linear_chain() : void
+    {
+        $base = new View('base_view', 'SELECT id, name FROM users');
+        $middle = new View('middle_view', 'SELECT id FROM base_view WHERE id > 0');
+        $top = new View('top_view', 'SELECT * FROM middle_view');
+
+        $result = (new ViewDependencyOrder(new \Flow\PostgreSql\Parser()))->order([$top, $middle, $base]);
+
+        $names = \array_map(static fn (View $v) => $v->name, $result);
+
+        self::assertSame(['base_view', 'middle_view', 'top_view'], $names);
+    }
+
+    public function test_self_referencing_view() : void
+    {
+        $recursive = new View('recursive_view', 'SELECT * FROM recursive_view');
+        $other = new View('other_view', 'SELECT * FROM recursive_view');
+
+        $result = (new ViewDependencyOrder(new \Flow\PostgreSql\Parser()))->order([$other, $recursive]);
+
+        $names = \array_map(static fn (View $v) => $v->name, $result);
+
+        self::assertSame(['recursive_view', 'other_view'], $names);
+    }
+
+    public function test_single_view() : void
+    {
+        $view = new View('my_view', 'SELECT * FROM users');
+
+        $result = (new ViewDependencyOrder(new \Flow\PostgreSql\Parser()))->order([$view]);
+
+        self::assertCount(1, $result);
+        self::assertSame('my_view', $result[0]->name);
+    }
+
+    public function test_view_referencing_external_table_is_not_affected() : void
+    {
+        $viewA = new View('view_a', 'SELECT * FROM external_table');
+        $viewB = new View('view_b', 'SELECT * FROM another_external');
+
+        $result = (new ViewDependencyOrder(new \Flow\PostgreSql\Parser()))->order([$viewA, $viewB]);
+
+        self::assertCount(2, $result);
+        self::assertSame('view_a', $result[0]->name);
+        self::assertSame('view_b', $result[1]->name);
+    }
+
+    public function test_views_without_dependencies_preserve_order() : void
+    {
+        $viewA = new View('alpha', 'SELECT 1 AS val');
+        $viewB = new View('beta', 'SELECT 2 AS val');
+        $viewC = new View('gamma', 'SELECT 3 AS val');
+
+        $result = (new ViewDependencyOrder(new \Flow\PostgreSql\Parser()))->order([$viewA, $viewB, $viewC]);
+
+        $names = \array_map(static fn (View $v) => $v->name, $result);
+
+        self::assertSame(['alpha', 'beta', 'gamma'], $names);
+    }
+}
diff --git a/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ViewTest.php b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ViewTest.php
new file mode 100644
index 0000000000..e3ec1ec2f5
--- /dev/null
+++ b/src/lib/postgresql/tests/Flow/PostgreSql/Tests/Unit/Schema/ViewTest.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\PostgreSql\Tests\Unit\Schema;
+
+use function Flow\PostgreSql\DSL\{col, eq, literal, schema_view, select, star, table};
+
+use PHPUnit\Framework\TestCase;
+
+final class ViewTest extends TestCase
+{
+    public function test_to_sql_generates_create_view() : void
+    {
+        self::assertSame(
+            'CREATE VIEW active_users AS SELECT * FROM users',
+            schema_view('active_users', select(star())->from(table('users'))->toSql())->toSql()->toSql(),
+        );
+    }
+
+    public function test_view_construction() : void
+    {
+        $definition = select(star())->from(table('users'))->where(eq(col('active'), literal(true)))->toSql();
+        $view = schema_view('active_users', $definition);
+
+        self::assertSame('active_users', $view->name);
+        self::assertSame($definition, $view->definition);
+        self::assertFalse($view->isUpdatable);
+    }
+
+    public function test_view_updatable() : void
+    {
+        $view = schema_view('user_emails', select(col('id'), col('email'))->from(table('users'))->toSql(), isUpdatable: true);
+
+        self::assertTrue($view->isUpdatable);
+    }
+}
diff --git a/src/lib/telemetry/composer.json b/src/lib/telemetry/composer.json
index 825c61986c..9b8401be03 100644
--- a/src/lib/telemetry/composer.json
+++ b/src/lib/telemetry/composer.json
@@ -10,7 +10,7 @@
     ],
     "require": {
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
-        "composer-runtime-api": "^2.0",
+        "composer-runtime-api": "^2.2",
         "psr/clock": "^1.0",
         "symfony/polyfill-mbstring": "^1.33"
     },
diff --git a/tools/blackfire/composer.lock b/tools/blackfire/composer.lock
index 0f9e0bc0aa..b140173823 100644
--- a/tools/blackfire/composer.lock
+++ b/tools/blackfire/composer.lock
@@ -85,16 +85,16 @@
         },
         {
             "name": "composer/ca-bundle",
-            "version": "1.5.10",
+            "version": "1.5.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/ca-bundle.git",
-                "reference": "961a5e4056dd2e4a2eedcac7576075947c28bf63"
+                "reference": "68ff39175e8e94a4bb1d259407ce51a6a60f09e6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/ca-bundle/zipball/961a5e4056dd2e4a2eedcac7576075947c28bf63",
-                "reference": "961a5e4056dd2e4a2eedcac7576075947c28bf63",
+                "url": "https://api.github.com/repos/composer/ca-bundle/zipball/68ff39175e8e94a4bb1d259407ce51a6a60f09e6",
+                "reference": "68ff39175e8e94a4bb1d259407ce51a6a60f09e6",
                 "shasum": ""
             },
             "require": {
@@ -141,7 +141,7 @@
             "support": {
                 "irc": "irc://irc.freenode.org/composer",
                 "issues": "https://github.com/composer/ca-bundle/issues",
-                "source": "https://github.com/composer/ca-bundle/tree/1.5.10"
+                "source": "https://github.com/composer/ca-bundle/tree/1.5.11"
             },
             "funding": [
                 {
@@ -153,7 +153,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2025-12-08T15:06:51+00:00"
+            "time": "2026-03-30T09:16:10+00:00"
         }
     ],
     "aliases": [],
@@ -165,5 +165,5 @@
     "platform-dev": {
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0"
     },
-    "plugin-api-version": "2.6.0"
+    "plugin-api-version": "2.9.0"
 }
diff --git a/tools/box/composer.lock b/tools/box/composer.lock
index c8ef65e087..6326c71473 100644
--- a/tools/box/composer.lock
+++ b/tools/box/composer.lock
@@ -1528,16 +1528,16 @@
         },
         {
             "name": "justinrainbow/json-schema",
-            "version": "v6.7.2",
+            "version": "6.8.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/jsonrainbow/json-schema.git",
-                "reference": "6fea66c7204683af437864e7c4e7abf383d14bc0"
+                "reference": "89ac92bcfe5d0a8a4433c7b89d394553ae7250cc"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/jsonrainbow/json-schema/zipball/6fea66c7204683af437864e7c4e7abf383d14bc0",
-                "reference": "6fea66c7204683af437864e7c4e7abf383d14bc0",
+                "url": "https://api.github.com/repos/jsonrainbow/json-schema/zipball/89ac92bcfe5d0a8a4433c7b89d394553ae7250cc",
+                "reference": "89ac92bcfe5d0a8a4433c7b89d394553ae7250cc",
                 "shasum": ""
             },
             "require": {
@@ -1597,9 +1597,9 @@
             ],
             "support": {
                 "issues": "https://github.com/jsonrainbow/json-schema/issues",
-                "source": "https://github.com/jsonrainbow/json-schema/tree/v6.7.2"
+                "source": "https://github.com/jsonrainbow/json-schema/tree/6.8.0"
             },
-            "time": "2026-02-15T15:06:22+00:00"
+            "time": "2026-04-02T12:43:11+00:00"
         },
         {
             "name": "kelunik/certificate",
@@ -2760,16 +2760,16 @@
         },
         {
             "name": "symfony/console",
-            "version": "v7.4.7",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "e1e6770440fb9c9b0cf725f81d1361ad1835329d"
+                "reference": "1e92e39c51f95b88e3d66fa2d9f06d1fb45dd707"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/e1e6770440fb9c9b0cf725f81d1361ad1835329d",
-                "reference": "e1e6770440fb9c9b0cf725f81d1361ad1835329d",
+                "url": "https://api.github.com/repos/symfony/console/zipball/1e92e39c51f95b88e3d66fa2d9f06d1fb45dd707",
+                "reference": "1e92e39c51f95b88e3d66fa2d9f06d1fb45dd707",
                 "shasum": ""
             },
             "require": {
@@ -2834,7 +2834,7 @@
                 "terminal"
             ],
             "support": {
-                "source": "https://github.com/symfony/console/tree/v7.4.7"
+                "source": "https://github.com/symfony/console/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -2854,7 +2854,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-03-06T14:06:20+00:00"
+            "time": "2026-03-30T13:54:39+00:00"
         },
         {
             "name": "symfony/deprecation-contracts",
@@ -3001,16 +3001,16 @@
         },
         {
             "name": "symfony/filesystem",
-            "version": "v7.4.6",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "3ebc794fa5315e59fd122561623c2e2e4280538e"
+                "reference": "58b9790d12f9670b7f53a1c1738febd3108970a5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/filesystem/zipball/3ebc794fa5315e59fd122561623c2e2e4280538e",
-                "reference": "3ebc794fa5315e59fd122561623c2e2e4280538e",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/58b9790d12f9670b7f53a1c1738febd3108970a5",
+                "reference": "58b9790d12f9670b7f53a1c1738febd3108970a5",
                 "shasum": ""
             },
             "require": {
@@ -3047,7 +3047,7 @@
             "description": "Provides basic utilities for the filesystem",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/filesystem/tree/v7.4.6"
+                "source": "https://github.com/symfony/filesystem/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -3067,20 +3067,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-02-25T16:50:00+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "symfony/finder",
-            "version": "v7.4.6",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "8655bf1076b7a3a346cb11413ffdabff50c7ffcf"
+                "reference": "e0be088d22278583a82da281886e8c3592fbf149"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/finder/zipball/8655bf1076b7a3a346cb11413ffdabff50c7ffcf",
-                "reference": "8655bf1076b7a3a346cb11413ffdabff50c7ffcf",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/e0be088d22278583a82da281886e8c3592fbf149",
+                "reference": "e0be088d22278583a82da281886e8c3592fbf149",
                 "shasum": ""
             },
             "require": {
@@ -3115,7 +3115,7 @@
             "description": "Finds files and directories via an intuitive fluent interface",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/finder/tree/v7.4.6"
+                "source": "https://github.com/symfony/finder/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -3135,7 +3135,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-01-29T09:40:50+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "symfony/polyfill-ctype",
@@ -3638,16 +3638,16 @@
         },
         {
             "name": "symfony/process",
-            "version": "v7.4.5",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "608476f4604102976d687c483ac63a79ba18cc97"
+                "reference": "60f19cd3badc8de688421e21e4305eba50f8089a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/608476f4604102976d687c483ac63a79ba18cc97",
-                "reference": "608476f4604102976d687c483ac63a79ba18cc97",
+                "url": "https://api.github.com/repos/symfony/process/zipball/60f19cd3badc8de688421e21e4305eba50f8089a",
+                "reference": "60f19cd3badc8de688421e21e4305eba50f8089a",
                 "shasum": ""
             },
             "require": {
@@ -3679,7 +3679,7 @@
             "description": "Executes commands in sub-processes",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/process/tree/v7.4.5"
+                "source": "https://github.com/symfony/process/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -3699,7 +3699,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-01-26T15:07:59+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "symfony/service-contracts",
@@ -3790,16 +3790,16 @@
         },
         {
             "name": "symfony/string",
-            "version": "v7.4.6",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/string.git",
-                "reference": "9f209231affa85aa930a5e46e6eb03381424b30b"
+                "reference": "114ac57257d75df748eda23dd003878080b8e688"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/string/zipball/9f209231affa85aa930a5e46e6eb03381424b30b",
-                "reference": "9f209231affa85aa930a5e46e6eb03381424b30b",
+                "url": "https://api.github.com/repos/symfony/string/zipball/114ac57257d75df748eda23dd003878080b8e688",
+                "reference": "114ac57257d75df748eda23dd003878080b8e688",
                 "shasum": ""
             },
             "require": {
@@ -3857,7 +3857,7 @@
                 "utf8"
             ],
             "support": {
-                "source": "https://github.com/symfony/string/tree/v7.4.6"
+                "source": "https://github.com/symfony/string/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -3877,20 +3877,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-02-09T09:33:46+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "symfony/var-dumper",
-            "version": "v7.4.6",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/var-dumper.git",
-                "reference": "045321c440ac18347b136c63d2e9bf28a2dc0291"
+                "reference": "9510c3966f749a1d1ff0059e1eabef6cc621e7fd"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/045321c440ac18347b136c63d2e9bf28a2dc0291",
-                "reference": "045321c440ac18347b136c63d2e9bf28a2dc0291",
+                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/9510c3966f749a1d1ff0059e1eabef6cc621e7fd",
+                "reference": "9510c3966f749a1d1ff0059e1eabef6cc621e7fd",
                 "shasum": ""
             },
             "require": {
@@ -3944,7 +3944,7 @@
                 "dump"
             ],
             "support": {
-                "source": "https://github.com/symfony/var-dumper/tree/v7.4.6"
+                "source": "https://github.com/symfony/var-dumper/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -3964,7 +3964,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-02-15T10:53:20+00:00"
+            "time": "2026-03-30T13:44:50+00:00"
         },
         {
             "name": "thecodingmachine/safe",
@@ -4177,5 +4177,5 @@
     "platform-dev": {
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0"
     },
-    "plugin-api-version": "2.6.0"
+    "plugin-api-version": "2.9.0"
 }
diff --git a/tools/cs-fixer/composer.lock b/tools/cs-fixer/composer.lock
index 3fc71c0c63..1e8989281e 100644
--- a/tools/cs-fixer/composer.lock
+++ b/tools/cs-fixer/composer.lock
@@ -1253,16 +1253,16 @@
         },
         {
             "name": "symfony/console",
-            "version": "v7.4.7",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "e1e6770440fb9c9b0cf725f81d1361ad1835329d"
+                "reference": "1e92e39c51f95b88e3d66fa2d9f06d1fb45dd707"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/e1e6770440fb9c9b0cf725f81d1361ad1835329d",
-                "reference": "e1e6770440fb9c9b0cf725f81d1361ad1835329d",
+                "url": "https://api.github.com/repos/symfony/console/zipball/1e92e39c51f95b88e3d66fa2d9f06d1fb45dd707",
+                "reference": "1e92e39c51f95b88e3d66fa2d9f06d1fb45dd707",
                 "shasum": ""
             },
             "require": {
@@ -1327,7 +1327,7 @@
                 "terminal"
             ],
             "support": {
-                "source": "https://github.com/symfony/console/tree/v7.4.7"
+                "source": "https://github.com/symfony/console/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -1347,7 +1347,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-03-06T14:06:20+00:00"
+            "time": "2026-03-30T13:54:39+00:00"
         },
         {
             "name": "symfony/deprecation-contracts",
@@ -1418,16 +1418,16 @@
         },
         {
             "name": "symfony/event-dispatcher",
-            "version": "v7.4.4",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/event-dispatcher.git",
-                "reference": "dc2c0eba1af673e736bb851d747d266108aea746"
+                "reference": "f57b899fa736fd71121168ef268f23c206083f0a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/dc2c0eba1af673e736bb851d747d266108aea746",
-                "reference": "dc2c0eba1af673e736bb851d747d266108aea746",
+                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/f57b899fa736fd71121168ef268f23c206083f0a",
+                "reference": "f57b899fa736fd71121168ef268f23c206083f0a",
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             },
             "require": {
@@ -1479,7 +1479,7 @@
             "description": "Provides tools that allow your application components to communicate with each other by dispatching events and listening to them",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/event-dispatcher/tree/v7.4.4"
+                "source": "https://github.com/symfony/event-dispatcher/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -1499,7 +1499,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-01-05T11:45:34+00:00"
+            "time": "2026-03-30T13:54:39+00:00"
         },
         {
             "name": "symfony/event-dispatcher-contracts",
@@ -1579,16 +1579,16 @@
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         {
             "name": "symfony/filesystem",
-            "version": "v7.4.6",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "3ebc794fa5315e59fd122561623c2e2e4280538e"
+                "reference": "58b9790d12f9670b7f53a1c1738febd3108970a5"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/filesystem/zipball/3ebc794fa5315e59fd122561623c2e2e4280538e",
-                "reference": "3ebc794fa5315e59fd122561623c2e2e4280538e",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/58b9790d12f9670b7f53a1c1738febd3108970a5",
+                "reference": "58b9790d12f9670b7f53a1c1738febd3108970a5",
                 "shasum": ""
             },
             "require": {
@@ -1625,7 +1625,7 @@
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             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/filesystem/tree/v7.4.6"
+                "source": "https://github.com/symfony/filesystem/tree/v7.4.8"
             },
             "funding": [
                 {
@@ -1645,20 +1645,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-02-25T16:50:00+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
             "name": "symfony/finder",
-            "version": "v7.4.6",
+            "version": "v7.4.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "8655bf1076b7a3a346cb11413ffdabff50c7ffcf"
+                "reference": "e0be088d22278583a82da281886e8c3592fbf149"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/finder/zipball/8655bf1076b7a3a346cb11413ffdabff50c7ffcf",
-                "reference": "8655bf1076b7a3a346cb11413ffdabff50c7ffcf",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/e0be088d22278583a82da281886e8c3592fbf149",
+                "reference": "e0be088d22278583a82da281886e8c3592fbf149",
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             "require": {
@@ -1693,7 +1693,7 @@
             "description": "Finds files and directories via an intuitive fluent interface",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/finder/tree/v7.4.6"
+                "source": "https://github.com/symfony/finder/tree/v7.4.8"
             },
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                 {
@@ -1713,20 +1713,20 @@
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             ],
-            "time": "2026-01-29T09:40:50+00:00"
+            "time": "2026-03-24T13:12:05+00:00"
         },
         {
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-                "reference": "4a88c083c668b2c364a425c9b3171b2d9ea5d218",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/a193923fc2d6325ef4e741cf3af8c3e8f54dbf25",
+                "reference": "a193923fc2d6325ef4e741cf3af8c3e8f54dbf25",
                 "shasum": ""
             },
             "require": {
@@ -58,7 +58,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2026-03-25T17:34:21+00:00"
+            "time": "2026-04-01T09:25:14+00:00"
         },
         {
             "name": "rector/rector",
@@ -130,5 +130,5 @@
     "platform-dev": {
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0"
     },
-    "plugin-api-version": "2.6.0"
+    "plugin-api-version": "2.9.0"
 }
diff --git a/web/landing/assets/codemirror/completions/dsl.js b/web/landing/assets/codemirror/completions/dsl.js
index adca23daeb..f330d11824 100644
--- a/web/landing/assets/codemirror/completions/dsl.js
+++ b/web/landing/assets/codemirror/completions/dsl.js
@@ -156,7 +156,7 @@ const dslFunctions = [
         apply: snippet("\\Flow\\ETL\\DSL\\all(" + "$" + "{" + "1:functions" + "}" + ")"),
         boost: 10
     },                {
-        label: "all_sub_select",
+        label: "all_",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -171,7 +171,7 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\all_sub_select(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:operator" + "}" + ", " + "$" + "{" + "3:subquery" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\all_(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:operator" + "}" + ", " + "$" + "{" + "3:subquery" + "}" + ")"),
         boost: 10
     },                {
         label: "alter",
@@ -276,7 +276,7 @@ const dslFunctions = [
         apply: snippet("\\Flow\\ETL\\DSL\\any(" + "$" + "{" + "1:values" + "}" + ")"),
         boost: 10
     },                {
-        label: "any_sub_select",
+        label: "any_",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -291,7 +291,7 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\any_sub_select(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:operator" + "}" + ", " + "$" + "{" + "3:subquery" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\any_(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:operator" + "}" + ", " + "$" + "{" + "3:subquery" + "}" + ")"),
         boost: 10
     },                {
         label: "append",
@@ -1725,7 +1725,7 @@ const dslFunctions = [
         apply: snippet("\\Flow\\PostgreSql\\DSL\\conditions()"),
         boost: 10
     },                {
-        label: "cond_and",
+        label: "and_",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -1740,7 +1740,7 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\cond_and(" + "$" + "{" + "1:conditions" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\and_(" + "$" + "{" + "1:conditions" + "}" + ")"),
         boost: 10
     },                {
         label: "cond_false",
@@ -1761,7 +1761,7 @@ const dslFunctions = [
         apply: snippet("\\Flow\\PostgreSql\\DSL\\cond_false()"),
         boost: 10
     },                {
-        label: "cond_not",
+        label: "not_",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -1776,10 +1776,10 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\cond_not(" + "$" + "{" + "1:condition" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\not_(" + "$" + "{" + "1:condition" + "}" + ")"),
         boost: 10
     },                {
-        label: "cond_or",
+        label: "or_",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -1794,7 +1794,7 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\cond_or(" + "$" + "{" + "1:conditions" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\or_(" + "$" + "{" + "1:conditions" + "}" + ")"),
         boost: 10
     },                {
         label: "cond_true",
@@ -4566,7 +4566,7 @@ const dslFunctions = [
         apply: snippet("\\Flow\\PostgreSql\\DSL\\gt(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ")"),
         boost: 10
     },                {
-        label: "gte",
+        label: "ge",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -4581,7 +4581,7 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\gte(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\ge(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ")"),
         boost: 10
     },                {
         label: "hash",
@@ -4995,7 +4995,7 @@ const dslFunctions = [
         apply: snippet("\\Flow\\ETL\\DSL\\int_schema(" + "$" + "{" + "1:name" + "}" + ", " + "$" + "{" + "2:nullable" + "}" + ", " + "$" + "{" + "3:metadata" + "}" + ")"),
         boost: 10
     },                {
-        label: "is_distinct_from",
+        label: "distinct_from",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -5010,10 +5010,10 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\is_distinct_from(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ", " + "$" + "{" + "3:not" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\distinct_from(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ", " + "$" + "{" + "3:not" + "}" + ")"),
         boost: 10
     },                {
-        label: "is_in",
+        label: "in_",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -5028,7 +5028,7 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\is_in(" + "$" + "{" + "1:expr" + "}" + ", " + "$" + "{" + "2:values" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\in_(" + "$" + "{" + "1:expr" + "}" + ", " + "$" + "{" + "2:values" + "}" + ")"),
         boost: 10
     },                {
         label: "is_null",
@@ -5634,7 +5634,7 @@ const dslFunctions = [
         apply: snippet("\\Flow\\PostgreSql\\DSL\\lt(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ")"),
         boost: 10
     },                {
-        label: "lte",
+        label: "le",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -5649,7 +5649,7 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\lte(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\le(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ")"),
         boost: 10
     },                {
         label: "manual_detector",
@@ -6018,7 +6018,7 @@ const dslFunctions = [
         apply: snippet("\\Flow\\Filesystem\\DSL\\native_local_filesystem()"),
         boost: 10
     },                {
-        label: "neq",
+        label: "ne",
         type: "function",
         detail: "flow\u002Ddsl\u002Dhelpers",
         info: () => {
@@ -6033,7 +6033,7 @@ const dslFunctions = [
                             `
             return div
         },
-        apply: snippet("\\Flow\\PostgreSql\\DSL\\neq(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ")"),
+        apply: snippet("\\Flow\\PostgreSql\\DSL\\ne(" + "$" + "{" + "1:left" + "}" + ", " + "$" + "{" + "2:right" + "}" + ")"),
         boost: 10
     },                {
         label: "not",
diff --git a/web/landing/composer.json b/web/landing/composer.json
index e15c705a9b..c366c8090c 100644
--- a/web/landing/composer.json
+++ b/web/landing/composer.json
@@ -99,7 +99,7 @@
         "league/commonmark": "^2.4",
         "presta/sitemap-bundle": "^4.1",
         "symfony/mime": "^7.2",
-        "symfony/string": "^7.3"
+        "symfony/string": "^7.4"
     },
     "require-dev": {
         "symfony/web-profiler-bundle": "^6.4",
diff --git a/web/landing/resources/dsl.json b/web/landing/resources/dsl.json
index 6e0adb5439..ee70a4daea 100644
--- a/web/landing/resources/dsl.json
+++ b/web/landing/resources/dsl.json
@@ -1 +1 @@
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\ No newline at end of file
diff --git a/web/landing/src/Flow/Website/Model/Documentation/Module.php b/web/landing/src/Flow/Website/Model/Documentation/Module.php
index 381ee592a3..10ae82ee25 100644
--- a/web/landing/src/Flow/Website/Model/Documentation/Module.php
+++ b/web/landing/src/Flow/Website/Model/Documentation/Module.php
@@ -24,6 +24,7 @@ enum Module : string
     case PARQUET = 'Parquet';
     case PG_QUERY = 'PG_QUERY';
     case POSTGRESQL = 'POSTGRESQL';
+    case POSTGRESQL_MIGRATIONS = 'PostgreSQL Migrations';
     case PSR18_TELEMETRY_BRIDGE = 'PSR-18 Telemetry Bridge';
     case PSR7_TELEMETRY_BRIDGE = 'PSR-7 Telemetry Bridge';
     case S3_FILESYSTEM = 'S3 Filesystem';
@@ -71,6 +72,7 @@ public function priority() : int
             self::SYMFONY_TELEMETRY_BUNDLE => 24,
             self::PSR7_TELEMETRY_BRIDGE => 25,
             self::PSR18_TELEMETRY_BRIDGE => 26,
+            self::POSTGRESQL_MIGRATIONS => 27,
             default => 99,
         };
     }
diff --git a/web/landing/templates/documentation/navigation_right.html.twig b/web/landing/templates/documentation/navigation_right.html.twig
index 3a02398b3a..20637fe6cf 100644
--- a/web/landing/templates/documentation/navigation_right.html.twig
+++ b/web/landing/templates/documentation/navigation_right.html.twig
@@ -131,6 +131,9 @@
             <li>
                 <a href="/documentation/components/bridges/symfony-telemetry-bundle">Telemetry Bundle</a>
             </li>
+            <li>
+                <a href="/documentation/components/bridges/symfony-postgresql-bundle">PostgreSQL Bundle</a>
+            </li>
             <li>
                 <a href="/documentation/components/bridges/symfony-http-foundation-bridge">Streamed Response</a>
             </li>