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https://issues.apache.org/jira/browse/CALCITE-889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14847355#comment-14847355
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Jesus Camacho Rodriguez commented on CALCITE-889:
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[~jnadeau], it is not purely transposing: to remain correct, top Sort is
preserved in the plan too.
> Implement SortUnionTransposeRule
> --------------------------------
>
> Key: CALCITE-889
> URL: https://issues.apache.org/jira/browse/CALCITE-889
> Project: Calcite
> Issue Type: Sub-task
> Reporter: Pengcheng Xiong
> Assignee: Julian Hyde
> Attachments: CALCITE-889.01.patch
>
>
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