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https://issues.apache.org/jira/browse/SPARK-36665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17411594#comment-17411594
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Apache Spark commented on SPARK-36665:
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User 'kazuyukitanimura' has created a pull request for this issue:
https://github.com/apache/spark/pull/33930
> Add more Not operator optimizations
> -----------------------------------
>
> Key: SPARK-36665
> URL: https://issues.apache.org/jira/browse/SPARK-36665
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.2, 3.2.0, 3.3.0
> Reporter: Kazuyuki Tanimura
> Priority: Major
>
> {{BooleanSimplification should be able to do more simplifications for Not
> operators applying following rules}}
> # {{Not(null) == null}}
> ## {{e.g. IsNull(Not(...)) can be IsNull(...)}}
> # {{(Not(a) = b) == (a = Not(b))}}
> ## {{e.g. Not(...) = true can be (...) = false}}
> # {{(a != b) == (a = Not(b))}}
> ## {{e.g. (...) != true can be (...) = false}}
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