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https://issues.apache.org/jira/browse/SPARK-44571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jiaan.geng updated SPARK-44571:
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    Summary: Eliminate the Join by combine multiple Aggregates  (was: Eliminate 
the Join by Combine multiple Aggregates)

> Eliminate the Join by combine multiple Aggregates
> -------------------------------------------------
>
>                 Key: SPARK-44571
>                 URL: https://issues.apache.org/jira/browse/SPARK-44571
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>    Affects Versions: 3.5.0
>            Reporter: jiaan.geng
>            Priority: Major
>
> Recently, I investigate the test case q28 which is belong to the TPC-DS 
> queries.
> The query contains multiple scalar subquery with aggregation and connected 
> with inner join.
> If we can merge the filters and aggregates, we can scan data source only once 
> and eliminate the join so as avoid shuffle. Obviously, this change will 
> improve the performance.



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