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  1. Apache Arrow
  2. ARROW-7165

[C++] Arrow Compute Group By Support

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    • New Feature
    • Status: Closed
    • Major
    • Resolution: Duplicate
    • None
    • None
    • C++

    Description

      Not sure if there is any plan to support groupby in arrow?

      Here is some to do in my mind:

      1. 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.
      2. To add a split array function instead of using take multiple time to split one array to several ones.
      3. 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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              Unassigned Unassigned
              xuechendi Chendi.Xue
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