A. Coady created ARROW-15152:
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Summary: Implement a `hash_list` aggregate function.
Key: ARROW-15152
URL: https://issues.apache.org/jira/browse/ARROW-15152
Project: Apache Arrow
Issue Type: New Feature
Components: C++, Python
Affects Versions: 6.0.1
Reporter: A. Coady
For more advanced aggregations, it's helpful to be able to gather the grouped
values into a list array. Pandas and Polars both have that feature. And
`hash_distinct` already aggregates to lists, so all the building blocks are
there.
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