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Posted to issues@spark.apache.org by "ulysses you (Jira)" <ji...@apache.org> on 2021/03/10 11:52:00 UTC

[jira] [Created] (SPARK-34690) Support Not(Int) and Not(InSet) propagate null

ulysses you created SPARK-34690:
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             Summary: Support Not(Int) and Not(InSet) propagate null
                 Key: SPARK-34690
                 URL: https://issues.apache.org/jira/browse/SPARK-34690
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.2.0
            Reporter: ulysses you


`Not(In)` is a little magic, the semantic of it could be seen like `and(a != b, a != c)`

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



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