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https://issues.apache.org/jira/browse/ARROW-15592?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weston Pace resolved ARROW-15592.
---------------------------------
    Fix Version/s: 11.0.0
       Resolution: Fixed

Issue resolved by pull request 14292
https://github.com/apache/arrow/pull/14292

> [C++] Add support for custom output field names in a substrait::PlanRel
> -----------------------------------------------------------------------
>
>                 Key: ARROW-15592
>                 URL: https://issues.apache.org/jira/browse/ARROW-15592
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Weston Pace
>            Assignee: Vibhatha Lakmal Abeykoon
>            Priority: Major
>              Labels: pull-request-available, substrait
>             Fix For: 11.0.0
>
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>
> A Substrait plan consists of multiple relations.  Some (only one?) of those 
> relations can be "root" relations which means they name the output fields.  
> We currently do not support this.  It should be a straightforward projection 
> to assign the field names.



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