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Posted to issues@calcite.apache.org by "Runkang He (Jira)" <ji...@apache.org> on 2023/06/26 01:02:00 UTC

[jira] [Commented] (CALCITE-5798) '(1 < x) IS NOT TRUE' when x is not nullable should be simplified to '1 >= x'

    [ https://issues.apache.org/jira/browse/CALCITE-5798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17736948#comment-17736948 ] 

Runkang He commented on CALCITE-5798:
-------------------------------------

The PR is https://github.com/apache/calcite/pull/3279

> '(1 < x) IS NOT TRUE' when x is not nullable should be simplified to '1 >= x'
> -----------------------------------------------------------------------------
>
>                 Key: CALCITE-5798
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5798
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.34.0
>            Reporter: Runkang He
>            Assignee: Runkang He
>            Priority: Major
>              Labels: pull-request-available
>
> Currently '(1 < x) IS NOT TRUE' when pulled up predicates contain 'x IS NOT NULL' is not simplified, and keeps it as it is.
>  
> It can and should be simplified to '1 >= x', which is more concise and useful for further simplification, such as CALCITE-5780
>  
> Note that this Jira is splited from CALCITE-5780, which makes this part of codes more clear, and follows the principle that a Jira only discusses one issue.



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