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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2017/11/02 23:31:16 UTC

[jira] [Updated] (CALCITE-1867) Allow user-defined SqlGroupedWindowFunction

     [ https://issues.apache.org/jira/browse/CALCITE-1867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde updated CALCITE-1867:
---------------------------------
    Summary: Allow user-defined SqlGroupedWindowFunction  (was: Allow user-defined SqlGroupFunctions)

> Allow user-defined SqlGroupedWindowFunction
> -------------------------------------------
>
>                 Key: CALCITE-1867
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1867
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>            Reporter: Timo Walther
>            Assignee: Julian Hyde
>            Priority: Major
>
> In Flink we want to create additional group auxiliary functions (such as {{TUMBLE_ROWTIME(), TUMBLE_PROCTIME()}}). 
> Unfortunately, {{SqlGroupFunction}} and its methods are package-private which prevents us from adding custom functions. Also {{AuxiliaryConverter}} limits because it is statically defined and not pluggable.



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