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Posted to issues@calcite.apache.org by "Timo Walther (JIRA)" <ji...@apache.org> on 2016/10/13 12:19:21 UTC

[jira] [Created] (CALCITE-1435) Wrong comparison of TIMESTAMP literals

Timo Walther created CALCITE-1435:
-------------------------------------

             Summary: Wrong comparison of TIMESTAMP literals
                 Key: CALCITE-1435
                 URL: https://issues.apache.org/jira/browse/CALCITE-1435
             Project: Calcite
          Issue Type: Bug
          Components: core
            Reporter: Timo Walther
            Assignee: Julian Hyde


The following expression always returns true when using {{ProjectToCalcRule}} which is invalid:

{code}
TIMESTAMP '2011-01-01 00:00:00.001' >= TIMESTAMP '2011-01-01 00:00:00.005'
{code}

The reason for this is that a wrong {{RexProgram}} is built since {{RexUtil#makeKey}} returns the same key for both timestamps. Both timestamps, however, have the same digest (fractional seconds are missing).



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