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https://issues.apache.org/jira/browse/FLINK-9296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16552752#comment-16552752
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Fabian Hueske commented on FLINK-9296:
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This is a regression from Flink 1.5.0.
Support for distinct aggregates on non-windowed grouped streaming tables got
dropped when re-organizing optimization rules to support distinct aggregates in
group and over windows.
> Support distinct aggregation on non-windowed grouped streaming tables
> ---------------------------------------------------------------------
>
> Key: FLINK-9296
> URL: https://issues.apache.org/jira/browse/FLINK-9296
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: Fabian Hueske
> Priority: Blocker
> Fix For: 1.6.0
>
>
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