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Posted to issues@spark.apache.org by "ulysses you (Jira)" <ji...@apache.org> on 2021/03/10 12:08:00 UTC

[jira] [Created] (SPARK-34692) Support Not(Int) and Not(InSet) propagate null

ulysses you created SPARK-34692:
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             Summary: Support Not(Int) and Not(InSet) propagate null
                 Key: SPARK-34692
                 URL: https://issues.apache.org/jira/browse/SPARK-34692
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.2.0
            Reporter: ulysses you


The semantics of `Not(In)` could be seen like `And(a != b, a != c)` that match the `NullIntolerant`.

As we already simplify the `NullIntolerant` expression to null if it's children have null. E.g. `a != null` => `null`. It's safe to do this with `Not(In)`/`Not(InSet)`.



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