You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@calcite.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2018/10/17 20:51:00 UTC

[jira] [Resolved] (CALCITE-2620) Simplify "coalesce(null,x)" to "x"

     [ https://issues.apache.org/jira/browse/CALCITE-2620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez resolved CALCITE-2620.
----------------------------------------------
       Resolution: Fixed
         Assignee: pengzhiwei  (was: Julian Hyde)
    Fix Version/s: 1.18.0

Fixed in [5b16e23|http://git-wip-us.apache.org/repos/asf/calcite/commit/5b16e23]. Thanks [~pzw2018]!

> Simplify "coalesce(null,x)" to "x"
> ----------------------------------
>
>                 Key: CALCITE-2620
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2620
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.18.0
>            Reporter: pengzhiwei
>            Assignee: pengzhiwei
>            Priority: Major
>             Fix For: 1.18.0
>
>
> "coalesce(x0,x1,.....)" can be simplified if any of "xi" is null literal.
> e.g.  "coalesce(null,x)" can simplify to "x", "coalesce(x,null,y)" can simplify to "coalesce(x,y)"



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)