fix: allow cast to type with column alias in postgres

Author: hellozimi

pegjs/postgresql.pegjs

@@ -5365,15 +5365,13 @@ cast_data_type
   }
 
 cast_double_colon
-  = s:(KW_DOUBLE_COLON __ cast_data_type)+ __ alias:alias_clause? {
+  = s:(KW_DOUBLE_COLON __ cast_data_type)+ {
     /* => {
-        as?: alias_clause,
         symbol: '::' | 'as',
         target: cast_data_type[];
       }
       */
     return {
-      as: alias,
       symbol: '::',
       target: s.map(v => v[2]),
     }

test/postgres.spec.js

@@ -1950,6 +1950,13 @@ describe('Postgres', () => {
         'ALTER TABLE "table_name" REPLICA IDENTITY FULL',
       ]
     },
+    {
+      title: 'cast without parentheses and with alias',
+      sql: [
+        'SELECT "createdAt"::date AS created_at, "updatedAt"::date "updated_at", count(*) as "value"',
+        'SELECT "createdAt"::DATE AS "created_at", "updatedAt"::DATE AS "updated_at", COUNT(*) AS "value"'
+      ]
+    },
   ]
   function neatlyNestTestedSQL(sqlList){
     sqlList.forEach(sqlInfo => {