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Posted to issues@calcite.apache.org by "pengzhiwei (JIRA)" <ji...@apache.org> on 2018/08/17 06:45:00 UTC

[jira] [Comment Edited] (CALCITE-2469) RexSimplify should not optimize '(not x) is null' to 'x is not null

    [ https://issues.apache.org/jira/browse/CALCITE-2469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16582069#comment-16582069 ] 

pengzhiwei edited comment on CALCITE-2469 at 8/17/18 6:44 AM:
--------------------------------------------------------------

I have made a PR for this problem,Anybody can have a check for me ? Thanks!

https://github.com/apache/calcite/pull/796


was (Author: pzw2018):
I have made a PR for this problem,Anybody can have a check for me ? Thanks!

https://github.com/apache/calcite/pull/794

> RexSimplify should not optimize '(not x) is null' to 'x is not null
> -------------------------------------------------------------------
>
>                 Key: CALCITE-2469
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2469
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.17.0
>            Reporter: pengzhiwei
>            Assignee: Julian Hyde
>            Priority: Critical
>
> The RexSimplify will optimize the '(not x) is null' to 'x is not null'. However,this is incorrect.It is same to the case '(not x) is not null' .
>  



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