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Posted to dev@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2017/06/21 18:34:00 UTC

[jira] [Created] (HIVE-16934) Transform COUNT(x) into COUNT() when x is not nullable

Jesus Camacho Rodriguez created HIVE-16934:
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             Summary: Transform COUNT(x) into COUNT() when x is not nullable
                 Key: HIVE-16934
                 URL: https://issues.apache.org/jira/browse/HIVE-16934
             Project: Hive
          Issue Type: Improvement
          Components: Logical Optimizer
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez


Add a rule to simplify COUNT aggregation function if possible, removing expressions that cannot be nullable from its parameters.



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