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https://issues.apache.org/jira/browse/ARROW-13764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou resolved ARROW-13764.
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Resolution: Fixed
Issue resolved by pull request 11011
[https://github.com/apache/arrow/pull/11011]
> [C++] Implement ScalarAggregateOptions for count_distinct (grouped)
> --------------------------------------------------------------------
>
> Key: ARROW-13764
> URL: https://issues.apache.org/jira/browse/ARROW-13764
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Nic Crane
> Assignee: David Li
> Priority: Major
> Labels: kernel, pull-request-available
> Fix For: 6.0.0
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> I'm writing the R bindings for the grouped {{count_distinct}} kernel, but the
> current implementation counts nulls as their own group. To match the R
> behaviour, I need to be able to specify whether or not to remove NA/NULL
> values.
> Please could we have ScalarAggregateOptions implemented for
> {{count_distinct}}?
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