CREATE TABLE AS (...) UNION (...) fails (#1309)

Author: fanchuo

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -4959,10 +4959,7 @@ CreateTable CreateTable():
     // see https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_7002.htm#i2126725
     // table properties , all these are optional
     [ rowMovement = RowMovement() { createTable.setRowMovement(rowMovement); }]
-    [
-    <K_AS> ( LOOKAHEAD("(" SelectWithWithItems( ) ")") "(" select = SelectWithWithItems( ) { createTable.setSelect(select, true); } ")"
-             | select = SelectWithWithItems( ) { createTable.setSelect(select, false); } )
-    ]
+    [<K_AS> select = SelectWithWithItems( ) { createTable.setSelect(select, false); }]
     [
     <K_LIKE> ( LOOKAHEAD("(" Table() ")") "(" likeTable=Table() { createTable.setLikeTable(likeTable, true); } ")"
                  | likeTable=Table() { createTable.setLikeTable(likeTable, false); } )

src/test/java/net/sf/jsqlparser/statement/create/CreateTableTest.java

@@ -434,6 +434,12 @@ public void testCreateUnitonIssue402_2() throws JSQLParserException {
         "CREATE TABLE temp.abc AS (SELECT sku FROM temp.a UNION SELECT sku FROM temp.b)");
   }
 
+  @Test
+  public void testCreateUnionIssue() throws JSQLParserException {
+    assertSqlCanBeParsedAndDeparsed(
+        "CREATE TABLE temp.abc AS (SELECT c FROM t1) UNION (SELECT c FROM t2)");
+  }
+
   @Test
   public void testTimestampWithTimezone() throws JSQLParserException {
     assertSqlCanBeParsedAndDeparsed(