Ordered aggregation is similar to grouped aggregation except that one column in the grouping key is (known to be) ordered. The result of both types of aggregations is the same but the existence of an ordered column enables optimizing.

Reporter: Yaron Gvili / @rtpsw
Assignee: Yaron Gvili / @rtpsw

PRs and other links:

• GitHub Pull Request #14352

_{Note: This issue was originally created as ARROW-17642. Please see the migration documentation for further details.}