fixs #1520 (#1521)

Author: chiangcho

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

@@ -1690,7 +1690,7 @@ String RelObjectNameWithoutValue() :
       | tk=<K_ARRAY_LITERAL>
       | tk=<K_STRING_FUNCTION_NAME>
       | tk=<K_USER>
-      | tk=<K_RECYCLEBIN> | tk=<K_DBA_RECYCLEBIN>
+      | tk=<K_RECYCLEBIN> | tk=<K_DBA_RECYCLEBIN> | tk=<K_ISOLATION>
 
       /* Keywords for ALTER SESSION */
       /* | tk=<K_NAME> */ | tk=<K_TIMEOUT> | tk=<K_PARALLEL>

src/test/java/net/sf/jsqlparser/statement/select/SelectTest.java

@@ -5193,6 +5193,9 @@ public void testWithIsolation() throws JSQLParserException {
         isolation = ((PlainSelect) select.getSelectBody()).getWithIsolation().getIsolation();
         assertEquals("Cs", isolation);
         assertSqlCanBeParsedAndDeparsed(statement);
+
+        statement = "SELECT rs.col, * FROM mytable RS WHERE mytable.col = 9";
+        assertSqlCanBeParsedAndDeparsed(statement);
     }
 
     @Test