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https://issues.apache.org/jira/browse/FLINK-21225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17284215#comment-17284215
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Jark Wu commented on FLINK-21225:
---------------------------------
Hi Timo, from my understanding, if there is a version under releasing, we
should fix issues into the next one, otherwise, it would be possible to release
a un-fixed issue. The release manager should move issues of 1.12.3 to 1.12.2
when creating release candidates. But as there are no 1.12.2 RC for now, I'm
fine to update fixed version to 1.12.2.
> OverConvertRule does not consider distinct
> ------------------------------------------
>
> Key: FLINK-21225
> URL: https://issues.apache.org/jira/browse/FLINK-21225
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Reporter: Timo Walther
> Assignee: Jane Chan
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0, 1.12.3
>
>
> We don't support OVER window distinct aggregates in Table API. Even though
> this is explicitly documented:
> https://ci.apache.org/projects/flink/flink-docs-release-1.12/dev/table/tableApi.html#aggregations
> {code}
> // Distinct aggregation on over window
> Table result = orders
> .window(Over
> .partitionBy($("a"))
> .orderBy($("rowtime"))
> .preceding(UNBOUNDED_RANGE)
> .as("w"))
> .select(
> $("a"), $("b").avg().distinct().over($("w")),
> $("b").max().over($("w")),
> $("b").min().over($("w"))
> );
> {code}
> The distinct flag is set to false in {{OverConvertRule}}.
> See also
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Unknown-call-expression-avg-amount-when-use-distinct-in-Flink-Thanks-td40905.html
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