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https://issues.apache.org/jira/browse/IMPALA-7849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16745707#comment-16745707
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Tim Armstrong commented on IMPALA-7849:
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Unfortunately this isn't supported yet.
> How can I create a User-defined analytic function?
> --------------------------------------------------
>
> Key: IMPALA-7849
> URL: https://issues.apache.org/jira/browse/IMPALA-7849
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Affects Versions: Impala 3.0
> Reporter: zhangjun
> Priority: Major
> Labels: User-defined, analytic, function
>
> I can create a UDAF with the "create aggregate function ....", but when I use
> this aggregate function for the analysis function, such as sql : select
> hour,my_udaf(id) over (partition by hour) from mytable ,it reports the
> following error.
> ERROR: AnalysisException: Aggregate function 'my_udaf(id)' not supported with
> OVER clause.
> How can I create the analytic function? Is this an imperfect function, or is
> it not designed to provide this function for some reason?
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