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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-17042) Expose NOT NULL constraint in optimizer so constant folding can take advantage of it
Date Wed, 05 Jul 2017 12:55:00 GMT
Jesus Camacho Rodriguez created HIVE-17042:
----------------------------------------------

             Summary: Expose NOT NULL constraint in optimizer so constant folding can take
advantage of it
                 Key: HIVE-17042
                 URL: https://issues.apache.org/jira/browse/HIVE-17042
             Project: Hive
          Issue Type: Sub-task
          Components: Logical Optimizer
    Affects Versions: 3.0.0
            Reporter: Jesus Camacho Rodriguez


We need to set the type to be not nullable for those columns.

Among others, it would be useful to simplify IS NOT NULL, NVL, and COALESCE predicates.



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