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https://issues.apache.org/jira/browse/SPARK-20350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-20350.
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Resolution: Fixed
Assignee: Michael Styles (was: Wenchen Fan)
> Apply Complementation Laws during boolean expression simplification
> -------------------------------------------------------------------
>
> Key: SPARK-20350
> URL: https://issues.apache.org/jira/browse/SPARK-20350
> Project: Spark
> Issue Type: Improvement
> Components: Optimizer
> Affects Versions: 2.1.0
> Reporter: Michael Styles
> Assignee: Michael Styles
> Fix For: 2.2.0, 2.3.0
>
>
> Apply Complementation Laws during boolean expression simplification.
> * A AND NOT(A) == FALSE
> * A OR NOT(A) == TRUE
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