godfrey he created FLINK-12076:
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Summary: Add support for generating optimized logical plan for
batch simple group aggregate
Key: FLINK-12076
URL: https://issues.apache.org/jira/browse/FLINK-12076
Project: Flink
Issue Type: New Feature
Components: Table SQL / Planner
Reporter: godfrey he
Assignee: godfrey he
To distinguish Window aggregate and Over aggregate, we call the `GROUP BY`
aggregate as group aggregate.
This issue only involves batch group aggregate, stream group aggregate will be
finished in new issue due to retraction derivation.
complex group aggregate(including GROUP SETS and DISTINCT) will also be
finished in new issue.
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