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Posted to issues@calcite.apache.org by "Zoltan Haindrich (JIRA)" <ji...@apache.org> on 2019/03/14 07:00:00 UTC

[jira] [Resolved] (CALCITE-2886) Simplification of AND expressions should push negations earlier

     [ https://issues.apache.org/jira/browse/CALCITE-2886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zoltan Haindrich resolved CALCITE-2886.
---------------------------------------
       Resolution: Fixed
    Fix Version/s: 1.19.0

merged into master as 
[36d373f0ff549eb079ed91c7cf2dda2475a0721a|https://github.com/apache/calcite/commit/36d373f0ff549eb079ed91c7cf2dda2475a0721a]

> Simplification of AND expressions should push negations earlier
> ---------------------------------------------------------------
>
>                 Key: CALCITE-2886
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2886
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.19.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> * currently simplification decomposes the AND operands
> * simplifies all operands
> * runs main simplification
> * (re) simplifies all operands which are negated
> Idea is to make the recursion as a first step; which could also push negation further down; and skip the simplification at end completely - as its not connected to a structural change.



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