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Posted to jira@arrow.apache.org by "Ian Cook (Jira)" <ji...@apache.org> on 2021/05/06 16:17:00 UTC

[jira] [Created] (ARROW-12669) [C++] Kernel to return Array of elements at index of list in ListArray

Ian Cook created ARROW-12669:
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             Summary: [C++] Kernel to return Array of elements at index of list in ListArray
                 Key: ARROW-12669
                 URL: https://issues.apache.org/jira/browse/ARROW-12669
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++
            Reporter: Ian Cook


It would be useful to have a compute function that takes a {{ListArray<list<type>>}} and an integer index {{n}} and returns an {{Array<type>}} containing the {{n}}th item from each list.

This would be useful in combination with existing functions that return list-type output, for example the string splitting function.



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