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https://issues.apache.org/jira/browse/CALCITE-2625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16648569#comment-16648569
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Julian Hyde commented on CALCITE-2625:
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I agree.
Note that we already have {{boolean SqlOperator.allowsFraming()}}. We just need
to use it when generating SQL.
Can you change the Jira case title to something more specific, e.g. about RANK
generating invalid SQL.
> Function Specific Sql Window Unparsing where Framing Not Allowed
> ----------------------------------------------------------------
>
> Key: CALCITE-2625
> URL: https://issues.apache.org/jira/browse/CALCITE-2625
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: KrishnaKant Agrawal
> Assignee: Julian Hyde
> Priority: Major
>
> The SQL standard says:-
> If <ntile function>, <lead or lag function>, <rank function type> or
> ROW_NUMBER is specified, then: … The window framing clause of WDX shall not
> be present.
> So, Calcite should not print the Window Frames when such functions are used.
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