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https://issues.apache.org/jira/browse/CALCITE-806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14634157#comment-14634157
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Julian Hyde commented on CALCITE-806:
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That's fine. Whatever behavior we choose, we should test it.
> ROW_NUMBER should emit distinct values
> --------------------------------------
>
> Key: CALCITE-806
> URL: https://issues.apache.org/jira/browse/CALCITE-806
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Fix For: next
>
>
> ROW_NUMBER should emit distinct values even for rows that have identical sort
> keys, or if there is no sort key. (This is distinct from RANK and DENSE_RANK,
> which emit the same value for rows with the same sort key.)
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