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Posted to issues@arrow.apache.org by "Andrew Lamb (Jira)" <ji...@apache.org> on 2021/01/17 13:50:00 UTC

[jira] [Created] (ARROW-11289) [Rust] [DataFusion] Support GROUP BY for Dictionary columns

Andrew Lamb created ARROW-11289:
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             Summary: [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


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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