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https://issues.apache.org/jira/browse/CALCITE-5149?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chunwei Lei updated CALCITE-5149:
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Summary: Refine RelMdColumnUniqueness for Aggregate by considering
intersect keys between target keys and group keys (was: Refine
RelMdColumnUniqueness for Aggregate by considering intersect keys)
> Refine RelMdColumnUniqueness for Aggregate by considering intersect keys
> between target keys and group keys
> ------------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-5149
> URL: https://issues.apache.org/jira/browse/CALCITE-5149
> Project: Calcite
> Issue Type: Improvement
> Reporter: Chunwei Lei
> Assignee: Chunwei Lei
> Priority: Major
>
> For instance,
> columns: [0, 1]
> group keys: [0, 2]
> If [0] is unique, then [0, 1] is unique too.
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