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Posted to issues@spark.apache.org by "L. C. Hsieh (Jira)" <ji...@apache.org> on 2021/11/07 08:19:00 UTC

[jira] [Assigned] (SPARK-36665) Add more Not operator optimizations

     [ https://issues.apache.org/jira/browse/SPARK-36665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

L. C. Hsieh reassigned SPARK-36665:
-----------------------------------

    Assignee: Kazuyuki Tanimura

> 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
>            Assignee: 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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