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https://issues.apache.org/jira/browse/ARROW-9653?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Grove updated ARROW-9653:
------------------------------
Component/s: Rust - DataFusion
Rust
> [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
> Components: Rust, Rust - DataFusion
> Reporter: Andrew Lamb
> Priority: Major
> 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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