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Posted to issues@calcite.apache.org by "Haisheng Yuan (JIRA)" <ji...@apache.org> on 2019/05/17 22:07:00 UTC

[jira] [Assigned] (CALCITE-1794) Simplify AND numeric comparisons when overlapping

     [ https://issues.apache.org/jira/browse/CALCITE-1794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Haisheng Yuan reassigned CALCITE-1794:
--------------------------------------

    Assignee: Haisheng Yuan

> Simplify AND numeric comparisons when overlapping
> -------------------------------------------------
>
>                 Key: CALCITE-1794
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1794
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>            Reporter: Remus Rusanu
>            Assignee: Haisheng Yuan
>            Priority: Major
>
> Expressions such as {{$1<>1 and $1=2}} can be simplified to {{$1=2}}. Similar {{$1>10 AND $1>20}} can be simplified to {{$1>20}}. Such expressions are produced by the proposed solution for CALCITE-1790 (simplify boolean CASE to complex AND/OR).



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