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https://issues.apache.org/jira/browse/FLINK-6335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15976817#comment-15976817
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Stefano Bortoli commented on FLINK-6335:
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Indeed, we have a list of open issues. Please have a look at:
https://issues.apache.org/jira/browse/FLINK-6249
I open a PR for code review for a first implementation of FLINK-6250:
https://github.com/apache/flink/pull/3732 you could have a look.
[~rtudoran] is working on a PR for calcite:
https://issues.apache.org/jira/browse/CALCITE-1740
Meanwhile we are working with a dummy DIST() function that allows to set a flag
about which aggregations are DISTINCT or not. Any suggestion is more than
welcome.
> Support DISTINCT over grouped window in stream SQL
> --------------------------------------------------
>
> Key: FLINK-6335
> URL: https://issues.apache.org/jira/browse/FLINK-6335
> Project: Flink
> Issue Type: Bug
> Reporter: Haohui Mai
> Assignee: Haohui Mai
>
> The SQL on the batch side supports the {{DISTINCT}} keyword over aggregation.
> This jira proposes to support the {{DISTINCT}} keyword on streaming
> aggregation using the same technique on the batch side.
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