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docs: comprehensive documentation update for v1.4+ features
## docs/README.md - Updated to v1.5.1+ with current date - Added new documentation sections (Getting Started, CLI Guide, Error Codes) - Added Testing & Quality section (Fuzz Testing, Performance Regression) - Added Migration Guides section - Updated documentation structure to 22 files - Added Recent Feature Additions section (v1.4+) - Updated all version references from v1.0.0 to v1.5.1 ## docs/SQL_COMPATIBILITY.md - Added MERGE statement support (SQL:2003 F312) - Added GROUPING SETS, ROLLUP, CUBE section (SQL-99 T431) - Added ORDER BY Extensions (NULLS FIRST/LAST - SQL-99 F851) - Added Expression Operators section (BETWEEN, IN, LIKE, IS NULL) - Added Materialized Views and Table Partitioning to DDL - Updated test suite to 600+ test cases, 95% coverage - Added SQL-99 compliance rating (~80-85%) ## docs/SECURITY.md - Added Security Package (pkg/sql/security) section - Added SQL injection detection overview with code example - Updated security score to 9.0/10 - Added PROACTIVE finding for built-in injection detection - Updated version to v1.5.1+ ## docs/ARCHITECTURE.md - Added modular parser architecture (11 parser modules) - Updated method hierarchy with all new parsing methods - Added new AST statement types (Merge, MaterializedView, etc.) - Added new expression types (Between, In, Like, IsNull) - Added Grouping Types section (GroupingSet, Rollup, Cube) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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‎docs/ARCHITECTURE.md‎

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@@ -125,27 +125,56 @@ The parser builds Abstract Syntax Trees from token streams.
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└──────────────────────────────────────┘
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```
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**Parser Methods Hierarchy:**
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**Parser Methods Hierarchy (v1.4+ Modular Architecture):**
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The parser is organized into logical modules for maintainability:
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```
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pkg/sql/parser/
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├── parser.go # Core parser and entry points
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├── select.go # SELECT statement parsing
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├── dml.go # INSERT, UPDATE, DELETE parsing
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├── cte.go # Common Table Expressions (WITH clause)
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├── expressions.go # Expression parsing (BETWEEN, IN, LIKE, etc.)
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├── window.go # Window functions (OVER, PARTITION BY)
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├── grouping.go # GROUPING SETS, ROLLUP, CUBE
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├── alter.go # ALTER TABLE statements
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├── create.go # CREATE statements (TABLE, VIEW, INDEX)
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├── drop.go # DROP statements
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├── merge.go # MERGE statements (SQL:2003)
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└── token_converter.go # Token format conversion
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```
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**Method Hierarchy:**
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```
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Parse()
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├── parseStatement()
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│ ├── parseSelectStatement()
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│ ├── parseWithStatement() # CTEs (cte.go)
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│ ├── parseSelectWithSetOperations() # SELECT + UNION/EXCEPT/INTERSECT (select.go)
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│ │ ├── parseSelectClause()
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│ │ ├── parseFromClause()
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│ │ ├── parseJoinClause()
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│ │ ├── parseWhereClause()
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│ │ ├── parseGroupByClause()
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│ │ ├── parseGroupByClause() # Includes GROUPING SETS (grouping.go)
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│ │ ├── parseHavingClause()
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│ │ └── parseOrderByClause()
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│ ├── parseInsertStatement()
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│ ├── parseUpdateStatement()
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│ ├── parseDeleteStatement()
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│ └── parseDDLStatement()
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└── parseExpression()
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│ │ └── parseOrderByClause() # Includes NULLS FIRST/LAST
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│ ├── parseInsertStatement() # (dml.go)
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│ ├── parseUpdateStatement() # (dml.go)
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│ ├── parseDeleteStatement() # (dml.go)
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│ ├── parseMergeStatement() # (merge.go)
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│ ├── parseCreateStatement() # (create.go) - TABLE, VIEW, MATERIALIZED VIEW, INDEX
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│ ├── parseAlterStatement() # (alter.go)
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│ └── parseDropStatement() # (drop.go)
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└── parseExpression() # (expressions.go)
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├── parsePrimaryExpression()
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├── parseBinaryExpression()
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├── parseBetweenExpression()
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├── parseInExpression()
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├── parseLikeExpression()
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├── parseIsNullExpression()
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├── parseFunctionCall()
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│ └── parseWindowSpec() # (window.go)
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└── parseSubquery()
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```
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│ │ ├── Columns: []Expression │ │
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│ │ ├── From: []Table │ │
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│ │ ├── Where: Expression │ │
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│ │ ├── GroupBy: []GroupingElement │ │
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│ │ └── ... │ │
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│ └────────────────────────────┘ │
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│ ┌────────────────────────────┐ │
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│ │ InsertStatement │ │
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│ │ UpdateStatement │ │
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│ │ DeleteStatement │ │
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│ │ CreateTableStatement │ │
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│ │ DML Statements │ │
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│ │ ├── InsertStatement │ │
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│ │ ├── UpdateStatement │ │
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│ │ ├── DeleteStatement │ │
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│ │ └── MergeStatement (v1.4+) │ │
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│ └────────────────────────────┘ │
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│ ┌────────────────────────────┐ │
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│ │ DDL Statements │ │
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│ │ ├── CreateTableStatement │ │
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│ │ ├── CreateViewStatement │ │
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│ │ ├── CreateMaterializedView │ │
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│ │ ├── CreateIndexStatement │ │
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│ │ ├── AlterTableStatement │ │
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│ │ ├── DropTableStatement │ │
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│ │ └── RefreshMaterializedView│ │
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│ └────────────────────────────┘ │
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├──────────────────────────────────────┤
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│ Expression Types │
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│ ┌────────────────────────────┐ │
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│ │ BinaryExpression │ │
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│ │ UnaryExpression │ │
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│ │ FunctionCall │ │
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│ │ WindowFunction (v1.3+) │ │
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│ │ Identifier │ │
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│ │ Literal │ │
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│ │ BetweenExpression (v1.4+) │ │
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│ │ InExpression (v1.4+) │ │
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│ │ LikeExpression (v1.4+) │ │
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│ │ IsNullExpression (v1.4+) │ │
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│ │ Subquery │ │
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│ │ CaseExpression │ │
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│ └────────────────────────────┘ │
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│ ┌────────────────────────────┐ │
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│ │ Grouping Types (v1.4+) │ │
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│ │ ├── GroupingSet │ │
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│ │ ├── RollupGrouping │ │
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│ │ └── CubeGrouping │ │
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│ └────────────────────────────┘ │
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└──────────────────────────────────────┘
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```

‎docs/README.md‎

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Comprehensive documentation for the GoSQLX SQL parsing SDK.
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**Current Version**: v1.5.1+ | **Last Updated**: November 2025
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## 📚 Documentation Index
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### Getting Started
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| Document | Description | Audience |
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|----------|-------------|----------|
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| [**GETTING_STARTED.md**](GETTING_STARTED.md) | 5-minute quickstart guide for new users | Beginners |
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| [**CLI_GUIDE.md**](CLI_GUIDE.md) | Command-line tool usage and examples | CLI Users |
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### Core Documentation
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| Document | Description | Audience |
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|----------|-------------|----------|
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| [**API_REFERENCE.md**](API_REFERENCE.md) | Complete API documentation with method signatures, parameters, and examples | Developers |
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| [**API_REFERENCE.md**](API_REFERENCE.md) | Complete API documentation with 4,400+ lines of examples | Developers |
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| [**USAGE_GUIDE.md**](USAGE_GUIDE.md) | Detailed usage patterns, best practices, and real-world examples | All Users |
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| [**ARCHITECTURE.md**](ARCHITECTURE.md) | System design, component architecture, and internal implementation | Contributors/Advanced |
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| [**TROUBLESHOOTING.md**](TROUBLESHOOTING.md) | Common issues, error messages, debugging techniques, and FAQ | Support/Debug |
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### Reference Documentation
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| Document | Description | Audience |
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|----------|-------------|----------|
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| [**ERROR_CODES.md**](ERROR_CODES.md) | Comprehensive error code reference (E1xxx-E4xxx) | Developers |
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| [**ERROR_REFERENCE.md**](ERROR_REFERENCE.md) | Error handling patterns and recovery strategies | Developers |
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| [**sql99-compliance-analysis.md**](sql99-compliance-analysis.md) | SQL-99 standard compliance analysis (~80-85%) | Architects |
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### Deployment & Operations
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| Document | Description | Audience |
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|----------|-------------|----------|
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| [**PRODUCTION_GUIDE.md**](PRODUCTION_GUIDE.md) | Production deployment, monitoring, and performance optimization | DevOps/SRE |
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| [**PERFORMANCE_TUNING.md**](PERFORMANCE_TUNING.md) | Performance optimization and benchmarking guide | Performance Engineers |
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| [**SQL_COMPATIBILITY.md**](SQL_COMPATIBILITY.md) | SQL dialect support matrix and feature compatibility | Architects |
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| [**SECURITY.md**](SECURITY.md) | Security analysis, vulnerability assessment, and best practices | Security Teams |
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| [**SECURITY.md**](SECURITY.md) | Security analysis, vulnerability assessment, and SQL injection detection | Security Teams |
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### Testing & Quality
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| Document | Description | Audience |
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|----------|-------------|----------|
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| [**FUZZ_TESTING_GUIDE.md**](FUZZ_TESTING_GUIDE.md) | Fuzz testing methodology and coverage | QA Engineers |
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| [**performance_regression_testing.md**](performance_regression_testing.md) | Performance regression testing guide | QA Engineers |
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| [**COMPARISON.md**](COMPARISON.md) | Comparison with other SQL parsers | Evaluators |
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### Release Information
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### Migration Guides
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| Document | Description | Version |
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|----------|-------------|---------|
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| [**RELEASE_v1.0.md**](RELEASE_v1.0.md) | v1.0.0 release notes, features, and validation results | v1.0.0 |
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| Document | Description |
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|----------|-------------|
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| [**migration/FROM_JSQLPARSER.md**](migration/FROM_JSQLPARSER.md) | Migrating from JSqlParser |
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| [**migration/FROM_PG_QUERY.md**](migration/FROM_PG_QUERY.md) | Migrating from pg_query |
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| [**migration/FROM_SQLFLUFF.md**](migration/FROM_SQLFLUFF.md) | Migrating from SQLFluff |
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## 🚀 Quick Start Guides
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```
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docs/
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├── API_REFERENCE.md # API documentation
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├── README.md # This documentation index
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├── GETTING_STARTED.md # 5-minute quickstart guide
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├── CLI_GUIDE.md # CLI tool documentation
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├── API_REFERENCE.md # Complete API documentation (4,400+ lines)
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├── USAGE_GUIDE.md # Usage patterns and examples
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├── ARCHITECTURE.md # System architecture
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├── TROUBLESHOOTING.md # Problem solving guide
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├── PRODUCTION_GUIDE.md # Production deployment
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├── PERFORMANCE_TUNING.md # Performance optimization
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├── SQL_COMPATIBILITY.md # SQL dialect matrix
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├── SECURITY.md # Security analysis
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├── RELEASE_v1.0.md # Release notes
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└── README.md # This file
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├── SECURITY.md # Security analysis
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├── ERROR_CODES.md # Error code reference
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├── ERROR_REFERENCE.md # Error handling guide
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├── COMPARISON.md # Parser comparison
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├── FUZZ_TESTING_GUIDE.md # Fuzz testing guide
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├── sql99-compliance-analysis.md # SQL-99 compliance
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├── CLEAN_ARCHITECTURE.md # Architecture principles
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└── migration/ # Migration guides
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├── FROM_JSQLPARSER.md
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├── FROM_PG_QUERY.md
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└── FROM_SQLFLUFF.md
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```
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## 🔍 Finding Information
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| Document | Last Updated | Version |
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|----------|--------------|---------|
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| API_REFERENCE.md | 2024-08 | v1.0.0 |
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| USAGE_GUIDE.md | 2024-08 | v1.0.0 |
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| ARCHITECTURE.md | 2024-08 | v1.0.0 |
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| TROUBLESHOOTING.md | 2024-08 | v1.0.0 |
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| PRODUCTION_GUIDE.md | 2024-08 | v1.0.0 |
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| SQL_COMPATIBILITY.md | 2024-08 | v1.0.0 |
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| SECURITY.md | 2024-08 | v1.0.0 |
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| API_REFERENCE.md | 2025-11 | v1.5.1 |
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| GETTING_STARTED.md | 2025-11 | v1.5.1 |
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| CLI_GUIDE.md | 2025-11 | v1.5.1 |
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| USAGE_GUIDE.md | 2025-11 | v1.5.1 |
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| ARCHITECTURE.md | 2025-11 | v1.5.1 |
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| TROUBLESHOOTING.md | 2025-11 | v1.5.1 |
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| PRODUCTION_GUIDE.md | 2025-11 | v1.5.1 |
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| SQL_COMPATIBILITY.md | 2025-11 | v1.5.1 |
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| SECURITY.md | 2025-11 | v1.5.1 |
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| ERROR_CODES.md | 2025-11 | v1.5.1 |
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| PERFORMANCE_TUNING.md | 2025-11 | v1.5.1 |
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## 🆕 Recent Feature Additions (v1.4+)
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- **SQL Injection Detection** - `pkg/sql/security` package for pattern detection
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- **MERGE Statements** - SQL Server/PostgreSQL MERGE support
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- **Grouping Sets** - ROLLUP, CUBE, GROUPING SETS (SQL-99 T431)
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- **Materialized Views** - CREATE/DROP/REFRESH MATERIALIZED VIEW
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- **Table Partitioning** - PARTITION BY RANGE/LIST/HASH
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- **Advanced Operators** - BETWEEN, IN, LIKE, IS NULL with full expression support
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- **Subquery Support** - Scalar, table, correlated, EXISTS subqueries
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- **NULLS FIRST/LAST** - ORDER BY with null ordering (SQL-99 F851)
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‎docs/SECURITY.md‎

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## 🛡️ Comprehensive Security Assessment
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**Analysis Date**: August 2025
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**Version**: v1.0.0
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**Security Score**: 8.5/10 ⭐⭐⭐⭐⭐
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**Analysis Date**: November 2025
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**Version**: v1.5.1+
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**Security Score**: 9.0/10 ⭐⭐⭐⭐⭐
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## 📋 Executive Summary
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GoSQLX has undergone a comprehensive security analysis across 7 critical security domains. The library demonstrates **strong security characteristics** suitable for production deployment with **minimal security concerns**.
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### 🆕 Security Package (v1.4+)
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GoSQLX now includes a dedicated **SQL Injection Detection** package (`pkg/sql/security`) that provides:
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- **8 Pattern Types**: Tautology, Comment Bypass, Stacked Query, UNION-based, Time-based, Boolean-based, Out-of-Band, Dangerous Functions
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- **4 Severity Levels**: CRITICAL, HIGH, MEDIUM, LOW
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- **Multi-Database Support**: PostgreSQL, MySQL, SQL Server, SQLite system table detection
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- **Thread-Safe**: Safe for concurrent use across goroutines
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- **High Performance**: 100,000+ queries/second scanning throughput
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```go
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import "github.com/ajitpratap0/GoSQLX/pkg/sql/security"
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scanner := security.NewScanner()
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result := scanner.Scan(ast)
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if result.HasCritical() {
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// Block potentially malicious query
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}
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```
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See [API_REFERENCE.md#security-package](API_REFERENCE.md#security-package) for complete documentation.
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### 🎯 Key Security Findings
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✅ **SECURE**: No critical vulnerabilities identified
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✅ **HARDENED**: Robust input validation and error handling
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✅ **RESILIENT**: Excellent memory safety and resource management
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✅ **COMPLIANT**: Safe Unicode handling across international character sets
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✅ **SECURE**: No critical vulnerabilities identified
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✅ **HARDENED**: Robust input validation and error handling
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✅ **RESILIENT**: Excellent memory safety and resource management
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✅ **COMPLIANT**: Safe Unicode handling across international character sets
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✅ **PROACTIVE**: Built-in SQL injection pattern detection (NEW in v1.4+)
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⚠️ **MONITOR**: Large input processing requires operational monitoring
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