Andrew Lamb created ARROW-9653:
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Summary: [Rust][DataFusion] Multi-column Group by: Invalid
Argument Error
Key: ARROW-9653
URL: https://issues.apache.org/jira/browse/ARROW-9653
Project: Apache Arrow
Issue Type: Bug
Reporter: Andrew Lamb
Attachments: repro.csv
Repro:
{code}
CREATE EXTERNAL TABLE repro(a INT, b INT)
STORED AS CSV
WITH HEADER ROW
LOCATION 'repro.csv';
{code}
The contents of repro.csv are as follows (also attached):
{code}
a,b
1,100
1,200
2,100
2,200
2,300
{code}
Then try to run the following query (to sum the values of a, grouped by b).
{code}
select sum(a), a, b from repro group by a, b;
{code}
*Expected result*: a table with three output columns: sum(a), a, and b
*Actual result*: An arrow error
{code}
> select sum(a), a, b from repro group by a, b;
ArrowError(InvalidArgumentError("number of columns(4) must match number of
fields(3) in schema"))
{code}
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