Cheng Su created SPARK-37564:
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Summary: Support sort aggregate code-gen without grouping keys
Key: SPARK-37564
URL: https://issues.apache.org/jira/browse/SPARK-37564
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 3.3.0
Reporter: Cheng Su
We can support `SortAggregateExec` code-gen without grouping keys. When there's
no grouping key, sort aggregate should share same execution logic with hash
aggregate. Refactor the code-gen without grouping keys, from
`HashAggregateExec` to a base class `AggregateCodegenSupport`, and
`SortAggregateExec` can share the same implementation by extending
`AggregateCodegenSupport`.
The implementation of `SortAggregateExec` code-gen with grouping keys will be
added in follow-up PR.
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