Chendi.Xue created ARROW-7165:
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Summary: [C++] Arrow Compute Group By Support
Key: ARROW-7165
URL: https://issues.apache.org/jira/browse/ARROW-7165
Project: Apache Arrow
Issue Type: New Feature
Components: C++ - Compute
Reporter: Chendi.Xue
Not sure if there is any plan to support groupby in arrow?
Here is some to do in my mind:
# To make current arrow/compute/kernels/hash supporting received a memo_table
as input, so multiple array will be able to get dictencode and valuecount based
on same hashmap with a unified index.
# To add a split array function instead of using take multiple time to split
one array to several ones.
# so the output array can use current funcs under compute/kernels, such as
sum/count/sort to support group by.
But this is some of my basic idea, wanna know if there is a on going plan on
this?
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