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https://issues.apache.org/jira/browse/FLINK-6335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15976889#comment-15976889
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Stefano Bortoli commented on FLINK-6335:
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Right. So I guess you will be working on group windows aggregates. Perhaps you
can have a look at FLINK-6249 to get some hints about the design. As Fabian
mentioned, calcite swallows the DISTINCT keyword when processing the
aggregation functions. Do you have ideas about how to work around it?
> 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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