[jira] [Created] (CALCITE-4980) Babel parser support MySQL equal operator '<=>'

[Xurenhe (Jira)]

Xurenhe created CALCITE-4980:
--------------------------------

             Summary: Babel parser support MySQL equal operator '<=>'
                 Key: CALCITE-4980
                 URL: https://issues.apache.org/jira/browse/CALCITE-4980
             Project: Calcite
          Issue Type: New Feature
          Components: babel, core
            Reporter: Xurenhe
            Assignee: Xurenhe


Babel parser support MySQL equal operator '<=>'.

Mysql link: 
[https://dev.mysql.com/doc/refman/8.0/en/comparison-operators.html#operator_equal-to]

 
{code:java}
// test case
@Test void testParseEqual()  {
  final String sql = "select '1' <=> '2' from t";
  final String expected = ""
      + "SELECT 1' <=> '2'\n"
      + "FROM `T`";
  sql(sql).ok(expected);
} {code}
{code:java}
// exception stack
    java.lang.RuntimeException: Error while parsing SQL: select '1' <=> '2' 
from t
        at 
org.apache.calcite.sql.parser.SqlParserTest$TesterImpl.parseStmtAndHandleEx(SqlParserTest.java:9704)
        at 
org.apache.calcite.sql.parser.SqlParserTest$TesterImpl.check(SqlParserTest.java:9690)
        at 
org.apache.calcite.sql.parser.SqlParserTest$Sql.ok(SqlParserTest.java:10047)
        at 
org.apache.calcite.test.BabelParserTest.testParseEqual(BabelParserTest.java:246)
        Caused by: java.lang.RuntimeException: 
org.apache.calcite.sql.parser.SqlParseException: Encountered "<= >" at line 1, 
column 12.
        Was expecting one of: {code}
 



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