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https://issues.apache.org/jira/browse/ARROW-17245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Arrow JIRA Bot reassigned ARROW-17245:
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Assignee: (was: Vibhatha Lakmal Abeykoon)
> [C++] Substrait aggregate rel has incorrect output order
> --------------------------------------------------------
>
> Key: ARROW-17245
> URL: https://issues.apache.org/jira/browse/ARROW-17245
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Weston Pace
> Priority: Major
>
> The output order for a Substrait aggregate is:
> {quote}
> The list of distinct columns from each grouping set (ordered by their first
> appearance) followed by the list of measures in declaration order
> {quote}
> However, the current aggregate node in Acero emits measures first and
> grouping set second. This could be fixed with a supplementary project but it
> seems simpler to modify the aggregate node itself. However, this would be a
> backwards incompatible change.
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