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https://issues.apache.org/jira/browse/SPARK-38162?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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XiDuo You updated SPARK-38162:
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Summary: Optimize one max row plan in normal and AQE Optimizer (was:
Remove distinct in aggregate if its child is empty)
> Optimize one max row plan in normal and AQE Optimizer
> -----------------------------------------------------
>
> Key: SPARK-38162
> URL: https://issues.apache.org/jira/browse/SPARK-38162
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: XiDuo You
> Priority: Major
>
> We can not propagate empty through aggregate if it does not contain grouping
> expression. But for the aggregate which contains distinct aggregate
> expression, we can remove distinct if its child is empty.
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