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https://issues.apache.org/jira/browse/SPARK-11024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14950124#comment-14950124
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Dilip Biswal commented on SPARK-11024:
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I am currently working on a PR for this issue.
> Optimize NULL in <inlist-expressions> by folding it to Literal(null)
> --------------------------------------------------------------------
>
> Key: SPARK-11024
> URL: https://issues.apache.org/jira/browse/SPARK-11024
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.1
> Reporter: Dilip Biswal
> Priority: Minor
>
> Add a rule in optimizer to convert NULL [NOT] IN (expr1,...,expr2) to
> Literal(null).
> This is a follow up defect to SPARK-8654 and suggested by Wenchen Fan.
>
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