[jira] [Resolved] (ARROW-15584) [C++] Add support for Substrait's RelCommon::Emit

["Weston Pace (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-15584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Weston Pace resolved ARROW-15584.
---------------------------------
    Fix Version/s: 10.0.0
       Resolution: Fixed

Issue resolved by pull request 13914
https://github.com/apache/arrow/pull/13914

> [C++] Add support for Substrait's RelCommon::Emit
> -------------------------------------------------
>
>                 Key: ARROW-15584
>                 URL: https://issues.apache.org/jira/browse/ARROW-15584
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Weston Pace
>            Assignee: Vibhatha Lakmal Abeykoon
>            Priority: Major
>              Labels: pull-request-available, substrait
>             Fix For: 10.0.0
>
>          Time Spent: 5h 20m
>  Remaining Estimate: 0h
>
> Any relation in Substrait is allowed to "emit" the output which means reordering the columns (and possibly dropping columns?).
> The C++ Substrait consumer currently does not handle this.
> This functionality could probably be handled by a project operation in the Arrow execution engine.



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