Kyle McCarthy created ARROW-7478:
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Summary: [Rust] [DataFusion] Group by expression ignored unless
paired with aggregate expression
Key: ARROW-7478
URL: https://issues.apache.org/jira/browse/ARROW-7478
Project: Apache Arrow
Issue Type: Bug
Components: Rust, Rust - DataFusion
Reporter: Kyle McCarthy
GROUP BY expressions are ignored unless the query also contains an aggregate
expression.
To reproduce you can execute the following query on the aggregate_test_100 data
set.
{code:java}
SELECT c2 FROM aggregate_test_100 GROUP BY c2{code}
*Expected:*
{{1}}
{{2}}
{{3}}
{{4}}
{{5}}
*Actual:*
{{2}}
{{5}}
{{...98 more rows...}}
The order of the expected isn't necessarily correct since the query doesn't
contain an ORDER BY expression.
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