[ARROW-15717] [Docs] Add hash_one to the documentation

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 8.0.0
• Component/s: Documentation
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/31168
• Assignee: Dhruv Vats
• Reporter: David Li
• Created: 17/Feb/22 15:38
• Updated: 11/Jan/23 11:39
• Resolved: 18/Feb/22 16:38

Description

Follow up to ARROW-13993.

Issue Links

• relates to: ARROW-13993 [C++] Hash aggregate function that returns value from first row in group
• links to: GitHub Pull Request #12463