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https://issues.apache.org/jira/browse/CALCITE-4563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17315013#comment-17315013
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Julian Hyde commented on CALCITE-4563:
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Please describe what scenario this would make possible.
> Allow auxiliary SqlGroupedWindowFunction to specify returnTypeInference
> ------------------------------------------------------------------------
>
> Key: CALCITE-4563
> URL: https://issues.apache.org/jira/browse/CALCITE-4563
> Project: Calcite
> Issue Type: Improvement
> Reporter: Leonard Xu
> Priority: Minor
>
> in CALCITE-2133 we allowed SqlGroupedWindowFunction to specify
> returnTypeInference in its constructor, but for auxiliary
> SqlGroupedWindowFunction, the returnTypeInference is fixed as
> *ReturnTypes.ARG0*, we can also enable user to config it.
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