[ARROW-13018] [C++][Docs] Use consistent terminology for nulls (min_count) in scalar aggregate kernels

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28733
• Assignee: Joris Van den Bossche
• Reporter: Joris Van den Bossche
• Created: 09/Jun/21 10:01
• Updated: 11/Jan/23 08:30
• Resolved: 10/Jun/21 07:33

Description

For example, the current `pc.sum` docstring has

Null values are ignored. Minimum count of non-NA
values can be set and NAN is returned if too few are present.
This can be changed through ScalarAggregateOptions.

which uses both NA and NAN in addition to "null".

Issue Links

• links to: GitHub Pull Request #10490