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https://issues.apache.org/jira/browse/CALCITE-2556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16613682#comment-16613682
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Vladimir Sitnikov commented on CALCITE-2556:
--------------------------------------------

Well, there's a catch: 
https://github.com/apache/calcite/pull/831/files#diff-5f0afa01652e21f36d8d4172f9af4dfeR568

simplifyStrong calls simplify_ for arguments, so it might lead to repeated 
simplification of the subtree.

> RexSimplify: not(trueLiteral) could be simplified to false
> ----------------------------------------------------------
>
>                 Key: CALCITE-2556
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2556
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.17.0
>            Reporter: Vladimir Sitnikov
>            Assignee: Julian Hyde
>            Priority: Major
>




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