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https://issues.apache.org/jira/browse/SPARK-34692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17327009#comment-17327009
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Apache Spark commented on SPARK-34692:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/32278
> 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
> Assignee: ulysses you
> Priority: Minor
> Fix For: 3.2.0
>
>
> 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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