feat(postgresql): add pg expression column

src/grammar/postgresql/PostgreSqlParser.g4

@@ -1,32 +1,27 @@
 /*
- * [The "MIT license"]
- * Copyright (C) 2014 Sam Harwell, Tunnel Vision Laboratories, LLC
- *
- * 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
+ * [The "MIT license"] Copyright (C) 2014 Sam Harwell, Tunnel Vision Laboratories, LLC
+ * 
+ * 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:
- *
- * 1. The above copyright notice and this permission notice shall be included in
- *    all copies or substantial portions of the Software.
- * 2. 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.
- * 3. Except as contained in this notice, the name of Tunnel Vision
- *    Laboratories, LLC. shall not be used in advertising or otherwise to
- *    promote the sale, use or other dealings in this Software without prior
- *    written authorization from Tunnel Vision Laboratories, LLC.
+ * 
+ * 1. The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software. 2. 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. 3. Except as contained in this notice, the name of Tunnel Vision
+ * Laboratories, LLC. shall not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization from Tunnel Vision
+ * Laboratories, LLC.
  */
 
 /**
- * This file is an adaptation of antlr's sql/postgresql/PostgreSQLParser.g4 grammar.
- * Reference: https://github.com/antlr/grammars-v4/blob/master/sql/postgresql/PostgreSQLParser.g4
+ * This file is an adaptation of antlr's sql/postgresql/PostgreSQLParser.g4 grammar. Reference:
+ * https://github.com/antlr/grammars-v4/blob/master/sql/postgresql/PostgreSQLParser.g4
  */
 
 /**
@@ -2409,7 +2404,7 @@ primaryExpression
     | explicit_row
     | OPEN_PAREN expression COMMA expr_list CLOSE_PAREN
     | row KW_OVERLAPS row
-    | qualified_name
+    | column_name_path
     | primaryExpression TYPECAST typename
     | (PLUS | MINUS) primaryExpression
     | primaryExpression qual_op primaryExpression?
@@ -2504,6 +2499,10 @@ window_clause
     : KW_WINDOW window_definition (COMMA window_definition)*
     ;
 
+having_clause
+    : KW_HAVING expression
+    ;
+
 window_definition
     : colid KW_AS window_specification
     ;
@@ -2743,6 +2742,10 @@ column_name
     | {this.shouldMatchEmpty()}? # columnNameMatch
     ;
 
+column_name_path
+    : colid opt_indirection
+    ;
+
 column_name_create
     : colid # columnNameCreate
     ;
@@ -3631,5 +3634,5 @@ any_identifier
     ;
 
 sql_expression
-    : target_list? into_clause? from_clause? where_clause? group_clause? (KW_HAVING expression)? window_clause?
+    : target_list? into_clause? from_clause? where_clause? group_clause? having_clause? window_clause?
     ;

src/lib/postgresql/PostgreSqlParserListener.ts

@@ -374,6 +374,7 @@ import { Document_or_contentContext } from "./PostgreSqlParser.js";
 import { Xmlexists_argumentContext } from "./PostgreSqlParser.js";
 import { Xml_passing_mechContext } from "./PostgreSqlParser.js";
 import { Window_clauseContext } from "./PostgreSqlParser.js";
+import { Having_clauseContext } from "./PostgreSqlParser.js";
 import { Window_definitionContext } from "./PostgreSqlParser.js";
 import { Over_clauseContext } from "./PostgreSqlParser.js";
 import { Window_specificationContext } from "./PostgreSqlParser.js";
@@ -425,6 +426,7 @@ import { ProcedureNameContext } from "./PostgreSqlParser.js";
 import { ProcedureNameCreateContext } from "./PostgreSqlParser.js";
 import { ColumnNameContext } from "./PostgreSqlParser.js";
 import { ColumnNameMatchContext } from "./PostgreSqlParser.js";
+import { Column_name_pathContext } from "./PostgreSqlParser.js";
 import { ColumnNameCreateContext } from "./PostgreSqlParser.js";
 import { FunctionNameCreateContext } from "./PostgreSqlParser.js";
 import { FunctionNameContext } from "./PostgreSqlParser.js";
@@ -4209,6 +4211,16 @@ export class PostgreSqlParserListener implements ParseTreeListener {
      * @param ctx the parse tree
      */
     exitWindow_clause?: (ctx: Window_clauseContext) => void;
+    /**
+     * Enter a parse tree produced by `PostgreSqlParser.having_clause`.
+     * @param ctx the parse tree
+     */
+    enterHaving_clause?: (ctx: Having_clauseContext) => void;
+    /**
+     * Exit a parse tree produced by `PostgreSqlParser.having_clause`.
+     * @param ctx the parse tree
+     */
+    exitHaving_clause?: (ctx: Having_clauseContext) => void;
     /**
      * Enter a parse tree produced by `PostgreSqlParser.window_definition`.
      * @param ctx the parse tree
@@ -4753,6 +4765,16 @@ export class PostgreSqlParserListener implements ParseTreeListener {
      * @param ctx the parse tree
      */
     exitColumnNameMatch?: (ctx: ColumnNameMatchContext) => void;
+    /**
+     * Enter a parse tree produced by `PostgreSqlParser.column_name_path`.
+     * @param ctx the parse tree
+     */
+    enterColumn_name_path?: (ctx: Column_name_pathContext) => void;
+    /**
+     * Exit a parse tree produced by `PostgreSqlParser.column_name_path`.
+     * @param ctx the parse tree
+     */
+    exitColumn_name_path?: (ctx: Column_name_pathContext) => void;
     /**
      * Enter a parse tree produced by the `columnNameCreate`
      * labeled alternative in `PostgreSqlParser.column_name_create`.

src/lib/postgresql/PostgreSqlParserVisitor.ts

@@ -374,6 +374,7 @@ import { Document_or_contentContext } from "./PostgreSqlParser.js";
 import { Xmlexists_argumentContext } from "./PostgreSqlParser.js";
 import { Xml_passing_mechContext } from "./PostgreSqlParser.js";
 import { Window_clauseContext } from "./PostgreSqlParser.js";
+import { Having_clauseContext } from "./PostgreSqlParser.js";
 import { Window_definitionContext } from "./PostgreSqlParser.js";
 import { Over_clauseContext } from "./PostgreSqlParser.js";
 import { Window_specificationContext } from "./PostgreSqlParser.js";
@@ -425,6 +426,7 @@ import { ProcedureNameContext } from "./PostgreSqlParser.js";
 import { ProcedureNameCreateContext } from "./PostgreSqlParser.js";
 import { ColumnNameContext } from "./PostgreSqlParser.js";
 import { ColumnNameMatchContext } from "./PostgreSqlParser.js";
+import { Column_name_pathContext } from "./PostgreSqlParser.js";
 import { ColumnNameCreateContext } from "./PostgreSqlParser.js";
 import { FunctionNameCreateContext } from "./PostgreSqlParser.js";
 import { FunctionNameContext } from "./PostgreSqlParser.js";
@@ -2722,6 +2724,12 @@ export class PostgreSqlParserVisitor<Result> extends AbstractParseTreeVisitor<Re
      * @return the visitor result
      */
     visitWindow_clause?: (ctx: Window_clauseContext) => Result;
+    /**
+     * Visit a parse tree produced by `PostgreSqlParser.having_clause`.
+     * @param ctx the parse tree
+     * @return the visitor result
+     */
+    visitHaving_clause?: (ctx: Having_clauseContext) => Result;
     /**
      * Visit a parse tree produced by `PostgreSqlParser.window_definition`.
      * @param ctx the parse tree
@@ -3045,6 +3053,12 @@ export class PostgreSqlParserVisitor<Result> extends AbstractParseTreeVisitor<Re
      * @return the visitor result
      */
     visitColumnNameMatch?: (ctx: ColumnNameMatchContext) => Result;
+    /**
+     * Visit a parse tree produced by `PostgreSqlParser.column_name_path`.
+     * @param ctx the parse tree
+     * @return the visitor result
+     */
+    visitColumn_name_path?: (ctx: Column_name_pathContext) => Result;
     /**
      * Visit a parse tree produced by the `columnNameCreate`
      * labeled alternative in `PostgreSqlParser.column_name_create`.

src/parser/postgresql/index.ts

@@ -37,6 +37,7 @@ export class PostgreSQL extends BasicSQL<PostgreSqlLexer, ProgramContext, Postgr
         PostgreSqlParser.RULE_procedure_name, // procedure name
         PostgreSqlParser.RULE_column_name_create, // column name that will be created
         PostgreSqlParser.RULE_column_name, // column name
+        PostgreSqlParser.RULE_column_name_path, // column name
     ]);
 
     protected get splitListener() {
@@ -125,6 +126,20 @@ export class PostgreSQL extends BasicSQL<PostgreSqlLexer, ProgramContext, Postgr
                     syntaxContextType = EntityContextType.COLUMN;
                     break;
                 }
+                case PostgreSqlParser.RULE_column_name_path: {
+                    if (
+                        candidateRule.ruleList.includes(PostgreSqlParser.RULE_group_clause) ||
+                        candidateRule.ruleList.includes(PostgreSqlParser.RULE_sort_clause) ||
+                        candidateRule.ruleList.includes(PostgreSqlParser.RULE_limit_clause) ||
+                        candidateRule.ruleList.includes(PostgreSqlParser.RULE_where_clause) ||
+                        candidateRule.ruleList.includes(PostgreSqlParser.RULE_having_clause) ||
+                        candidateRule.ruleList.includes(PostgreSqlParser.RULE_window_clause) ||
+                        candidateRule.ruleList.includes(PostgreSqlParser.RULE_triggerwhen)
+                    ) {
+                        syntaxContextType = EntityContextType.COLUMN;
+                    }
+                    break;
+                }
                 default:
                     break;
             }

src/parser/postgresql/postgreErrorListener.ts

@@ -17,6 +17,7 @@ export class PostgreSqlErrorListener extends ParseErrorListener {
         [PostgreSqlParser.RULE_function_name, 'function'],
         [PostgreSqlParser.RULE_function_name_create, 'function'],
         [PostgreSqlParser.RULE_column_name, 'column'],
+        [PostgreSqlParser.RULE_column_name_path, 'column'],
         [PostgreSqlParser.RULE_column_name_create, 'column'],
         [PostgreSqlParser.RULE_schema_name_create, 'schema'],
         [PostgreSqlParser.RULE_schema_name, 'schema'],
@@ -54,8 +55,11 @@ export class PostgreSqlErrorListener extends ParseErrorListener {
                     case PostgreSqlParser.RULE_view_name:
                     case PostgreSqlParser.RULE_database_name:
                     case PostgreSqlParser.RULE_procedure_name:
-                    case PostgreSqlParser.RULE_column_name: {
-                        result.push(`{existing}${name}`);
+                    case PostgreSqlParser.RULE_column_name:
+                    case PostgreSqlParser.RULE_column_name_path: {
+                        if (!result.includes(`{existing}${name}`)) {
+                            result.push(`{existing}${name}`);
+                        }
                         break;
                     }
                     case PostgreSqlParser.RULE_table_name_create:

test/parser/postgresql/errorListener.test.ts

@@ -5,6 +5,7 @@ const sql1 = `ALTER EVENT`;
 const sql2 = `CREATE FUNCTION `;
 const sql3 = `SELECT name, altitude FROM ONLY cities WHERE `;
 const sql4 = `DROP PROCEDURE name1 a`;
+const sql5 = `SELECT * FROM db.tbs GROUP BY sum( `;
 
 describe('PostgreSQL validate invalid sql and test msg', () => {
     const pgSQL = new PostgreSQL();
@@ -45,6 +46,14 @@ describe('PostgreSQL validate invalid sql and test msg', () => {
         );
     });
 
+    test('validate unComplete sql5', () => {
+        const errors = pgSQL.validate(sql5);
+        expect(errors.length).toBe(1);
+        expect(errors[0].message).toBe(
+            `Statement is incomplete, expecting an existing column or an existing function or a keyword`
+        );
+    });
+
     test('validate random text cn', () => {
         pgSQL.locale = 'zh_CN';
         const errors = pgSQL.validate(randomText);

test/parser/postgresql/suggestion/fixtures/syntaxSuggestion.sql

@@ -79,3 +79,13 @@ SELECT * FROM db.tbs GROUP BY (col1, col2) ORDER BY col3;
 TRUNCATE TABLE ;
 
 TRUNCATE TABLE t1;
+
+SELECT * FROM db.tbs GROUP BY sum(length(col1+col2)) ORDER BY length(sum(col1/clo2));
+
+VALUES (1, '3'), (3, 'sdsd') ORDER BY sort_expression ASC LIMIT id = 1;
+
+CREATE OR REPLACE RULE name AS ON SELECT TO table_name WHERE length(y+x) = 3 DO INSTEAD NOTHING;
+
+WITH query_name (id) AS (SELECT id FROM table_expression) SELECT DISTINCT ON (col1) random() AS name1 FROM table_expression WHERE name1=name1 GROUP BY id  HAVING sum(len+y) < interval '5 hours' WINDOW  w AS (PARTITION BY depname ORDER BY salary DESC) EXCEPT (SELECT * FROM others) ORDER BY salary USING > NULLS FIRST OFFSET start FETCH NEXT ROW ONLY FOR KEY SHARE OF table_name NOWAIT;
+
+CREATE CONSTRAINT TRIGGER trig_name INSTEAD OF INSERT OR UPDATE ON table_name FROM referenced_table_name WHEN (OLD.balance IS DISTINCT FROM NEW.balance) EXECUTE PROCEDURE function_name ();