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https://issues.apache.org/jira/browse/CALCITE-4432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17246350#comment-17246350
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Haisheng Yuan commented on CALCITE-4432:
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Hmm, since which version?
> When the RelNode's input is the same subset as the subset node belonged to,
> not choose this node as best.
> ---------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-4432
> URL: https://issues.apache.org/jira/browse/CALCITE-4432
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Ziwei Liu
> Assignee: Ziwei Liu
> Priority: Major
>
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