[jira] [Closed] (FLINK-21225) OverConvertRule does not consider distinct

["Jark Wu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-21225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jark Wu closed FLINK-21225.
---------------------------
    Fix Version/s:     (was: 1.12.3)
       Resolution: Fixed

> 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
>
>
> 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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