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Posted to issues@calcite.apache.org by "Jiefan Li (Jira)" <ji...@apache.org> on 2021/06/28 20:30:00 UTC

[jira] [Created] (CALCITE-4669) Allow empty MAP[] constructors

Jiefan Li created CALCITE-4669:
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             Summary: Allow empty MAP[] constructors
                 Key: CALCITE-4669
                 URL: https://issues.apache.org/jira/browse/CALCITE-4669
             Project: Calcite
          Issue Type: Wish
            Reporter: Jiefan Li


Similar ticket: https://issues.apache.org/jira/browse/CALCITE-3504

Currently an MAP expression requires at least 2 element. However, Hive supports empty MAP() syntax.
Please allow empty MAP expressions:
{code:sql}
SELECT MAP[] FROM foo;
{code}

cc: [~wmoustafa]



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