fix: character varying as data type in pg

Author: taozhi8833998

pegjs/postgresql.pegjs

@@ -5188,13 +5188,17 @@ boolean_type
 binary_type
   = 'bytea'i { /* => data_type */ return { dataType: 'BYTEA' }; }
 
+character_varying
+  = KW_CHARACTER __ ('varying'i)? {
+    // => string
+    return 'CHARACTER VARYING'
+  }
 character_string_type
-  = t:(KW_CHAR / KW_VARCHAR) __ LPAREN __ l:[0-9]+ __ RPAREN {
+  = t:(KW_CHAR / KW_VARCHAR / character_varying) __ LPAREN __ l:[0-9]+ __ RPAREN {
     // => data_type
     return { dataType: t, length: parseInt(l.join(''), 10) };
   }
-  / t:(KW_CHAR / KW_CHARACTER) { /* =>  data_type */ return { dataType: t }; }
-  / t:KW_VARCHAR { /* =>  data_type */  return { dataType: t }; }
+  / t:(KW_CHAR / character_varying / KW_VARCHAR) { /* =>  data_type */ return { dataType: t }; }
 
 numeric_type_suffix
   = un: KW_UNSIGNED? __ ze: KW_ZEROFILL? {

test/postgres.spec.js

@@ -915,7 +915,7 @@ describe('Postgres', () => {
       title: 'support character data type',
       sql: [
         "SELECT 'x'::character varying;",
-        `SELECT 'x'::CHARACTER AS "varying"`
+        `SELECT 'x'::CHARACTER VARYING`
       ]
     },
     {
@@ -1346,6 +1346,18 @@ describe('Postgres', () => {
         `SELECT 'Molière' AS "théâtre"`
       ]
     },
+    {
+      title: 'support character varying',
+      sql: [
+        `CREATE TABLE "public"."authors_table" (
+          "author_id" integer NOT NULL,
+          "first_name" character varying NOT NULL,
+          "last_name" character varying NOT NULL,
+          "birth_date" date
+        );`,
+        'CREATE TABLE "public"."authors_table" ("author_id" INTEGER NOT NULL, "first_name" CHARACTER VARYING NOT NULL, "last_name" CHARACTER VARYING NOT NULL, "birth_date" DATE)'
+      ]
+    },
   ]
   function neatlyNestTestedSQL(sqlList){
     sqlList.forEach(sqlInfo => {