[FLINK-21968] Calcite parser doesn't support to parse "-- test"

• Type: Bug
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Affects Version/s: 1.13.0
• Component/s: Table SQL / API
• Labels: auto-deprioritized-major auto-deprioritized-minor
• Assignee: Unassigned
• Reporter: Shengkai Fang
• Created: 25/Mar/21 03:46
• Updated: 03/Dec/21 22:38

Description

Please add a test in the FlinkSqlParserImplTest.java.

    @Test
    public void testParseComment() {
        sql("-- test").ok("-- test");
    }

I think we can fix this by using ExtendedParseStrategy to clear the string that matches "--.*$";

ExtendedParseStrategy is introduced in the FLINK-21836