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https://issues.apache.org/jira/browse/CALCITE-2438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16572189#comment-16572189
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Vladimir Sitnikov commented on CALCITE-2438:
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-1 for Testing
https://github.com/julianhyde/calcite/commit/9e8f849d21a23d23306b9b88ce8f877f84e93436
since exception messages would be obscure.
> RexCall#isAlwaysTrue return incorrect result
> ---------------------------------------------
>
> Key: CALCITE-2438
> URL: https://issues.apache.org/jira/browse/CALCITE-2438
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.17.0
> Reporter: pengzhiwei
> Assignee: Julian Hyde
> Priority: Critical
> Attachments: 屏幕快照 2018-08-02 下午7.26.20.png, 屏幕快照 2018-08-02
> 下午7.34.26.png
>
>
> In the expression as followed:
> {code:java}
> ((sal IS NULL) IS NOT NULL) IS FALSE
> {code}
> The RexCall#isAlwaysTrue return true,however the correct answer is false.
> I find the reason is that there is a wrong logic in the isAlwaysTrue,when
> getKind() is IS_NOT_FALSE、IS_FALSE and IS_NOT_FALSE :
> !屏幕快照 2018-08-02 下午7.34.26.png!
> Can you have a check for me,thanks!
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