Yaron Gvili created ARROW-17642:
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Summary: [C++] Add ordered aggregation
Key: ARROW-17642
URL: https://issues.apache.org/jira/browse/ARROW-17642
Project: Apache Arrow
Issue Type: New Feature
Components: C++
Reporter: Yaron Gvili
Assignee: Yaron Gvili
{color:#000000}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.{color}
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