Nic Crane created ARROW-13764:
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Summary: [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
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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