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