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?

Reporter: Nicola Crane / @thisisnic
Assignee: David Li / @lidavidm

Related issues:

• [R] Use Arrow engine for summarize() by default (blocks)
• [R] Binding for n_distinct() (relates to)

PRs and other links:

• GitHub Pull Request #11011

_{Note: This issue was originally created as ARROW-13764. Please see the migration documentation for further details.}