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https://issues.apache.org/jira/browse/CALCITE-907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chunwei Lei reassigned CALCITE-907:
-----------------------------------
Assignee: Chunwei Lei
> Add AggregateExchangeTransposeRule
> ----------------------------------
>
> Key: CALCITE-907
> URL: https://issues.apache.org/jira/browse/CALCITE-907
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Chunwei Lei
> Priority: Major
>
> A rule that would recognize an Aggregate on top of an Exchange and push down
> the aggregation. The result is a local Aggregate followed by an Exchange
> followed by a summarizing Aggregate.
> It would exploit SqlSplittableAggFunction, similar to CALCITE-751.
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