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Posted to jira@arrow.apache.org by "Andrew Lamb (Jira)" <ji...@apache.org> on 2021/02/15 20:39:00 UTC
[jira] [Resolved] (ARROW-11289) [Rust] [DataFusion] Support GROUP
BY for Dictionary columns
[ https://issues.apache.org/jira/browse/ARROW-11289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Lamb resolved ARROW-11289.
---------------------------------
Fix Version/s: 4.0.0
Resolution: Fixed
Issue resolved by pull request 9233
[https://github.com/apache/arrow/pull/9233]
> [Rust] [DataFusion] Support GROUP BY for Dictionary columns
> -----------------------------------------------------------
>
> Key: ARROW-11289
> URL: https://issues.apache.org/jira/browse/ARROW-11289
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust - DataFusion
> Reporter: Andrew Lamb
> Assignee: Andrew Lamb
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> If you try and run a query that groups on a column encoded as a Dictionary you get an error about "unsupported GROUP BY type". You should get the same result as if your data was encoded using a primitive array type.
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