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https://issues.apache.org/jira/browse/ARROW-12669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Li resolved ARROW-12669.
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Resolution: Fixed
Issue resolved by pull request 11159
[https://github.com/apache/arrow/pull/11159]
> [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
> Assignee: Percy Camilo Triveño Aucahuasi
> Priority: Critical
> Labels: Kernels, kernel, pull-request-available, types
> Fix For: 6.0.0
>
> Time Spent: 15h 40m
> Remaining Estimate: 0h
>
> 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 functions.
> Let's please ensure that this also works on fixed size list.
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