Use PostgreSQL trigger event phrases instead of standalone keywords

Author: karlhorky

src/languages/postgresql/postgresql.formatter.ts

@@ -40,7 +40,6 @@ const tabularOnelineClauses = expandPhrases([
   'CREATE [MATERIALIZED] VIEW [IF NOT EXISTS]',
   // - update:
   'UPDATE [ONLY]',
-  'UPDATE OF',
   'WHERE CURRENT OF',
   // - insert:
   'ON CONFLICT',
@@ -63,7 +62,7 @@ const tabularOnelineClauses = expandPhrases([
   'TRUNCATE [TABLE] [ONLY]',
   // other
   'SET SCHEMA',
-  'AFTER [INSERT]',
+  '{BEFORE | AFTER | INSTEAD OF} {INSERT | UPDATE [OF] | DELETE | TRUNCATE}',
   'DEFERRABLE INITIALLY DEFERRED',
   // https://www.postgresql.org/docs/14/sql-commands.html
   'ABORT',
@@ -258,6 +257,7 @@ const reservedKeywordPhrases = expandPhrases([
   'DO {NOTHING | UPDATE}',
   'AS MATERIALIZED',
   'FOR EACH ROW',
+  'OR {INSERT | UPDATE [OF] | DELETE | TRUNCATE}',
   '{ROWS | RANGE | GROUPS} BETWEEN',
   // comparison operator
   'IS [NOT] DISTINCT FROM',

test/postgresql.test.ts

@@ -273,12 +273,26 @@ describe('PostgreSqlFormatter', () => {
       )
     ).toBe(dedent`
       CREATE CONSTRAINT TRIGGER example_trigger
-      AFTER INSERT
-      OR
-      UPDATE OF column_a,
+      AFTER INSERT OR UPDATE OF column_a,
       column_b ON example_table
       DEFERRABLE INITIALLY DEFERRED FOR EACH ROW
       EXECUTE PROCEDURE example_function ();
     `);
   });
+
+  it('formats multiple CREATE TRIGGER events without treating OR as a logical operator', () => {
+    expect(
+      format(
+        `create trigger Example_Trigger
+        after insert or update or delete on Example_Table
+        for each row
+        execute function Example_Function ();`,
+        { keywordCase: 'upper', identifierCase: 'lower' }
+      )
+    ).toBe(dedent`
+      CREATE TRIGGER example_trigger
+      AFTER INSERT OR UPDATE OR DELETE ON example_table FOR EACH ROW
+      EXECUTE FUNCTION example_function ();
+    `);
+  });
 });