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Posted to issues@flink.apache.org by "xuyang (Jira)" <ji...@apache.org> on 2022/01/17 04:24:00 UTC

[jira] [Commented] (FLINK-25476) CharType lost in the creation of MaxAggFunction & MinAggFunction

    [ https://issues.apache.org/jira/browse/FLINK-25476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17476949#comment-17476949 ] 

xuyang commented on FLINK-25476:
--------------------------------

I'll try to fix this issue.

> CharType lost in the creation of MaxAggFunction & MinAggFunction
> ----------------------------------------------------------------
>
>                 Key: FLINK-25476
>                 URL: https://issues.apache.org/jira/browse/FLINK-25476
>             Project: Flink
>          Issue Type: Bug
>          Components: Table SQL / Planner
>    Affects Versions: 1.15.0
>            Reporter: zoucao
>            Priority: Major
>
> CharType lost in AggFunctionFactory#createMinAggFunction(Retract) and 
> AggFunctionFactory#createMaxAggFunction(Retract&nonRetract).
> If execute 
> {code:java}
> SELECT Max('a') ...
> {code}
>  , The following exception will throw.
> ----
> Caused by: org.apache.flink.table.api.TableException: Max aggregate function does not support type: ''CHAR''.
> Please re-check the data type.
> 	at org.apache.flink.table.planner.plan.utils.AggFunctionFactory.createMaxAggFunction(AggFunctionFactory.scala:395)
> 	at org.apache.flink.table.planner.plan.utils.AggFunctionFactory.createAggFunction(AggFunctionFactory.scala:76)
> 	at org.apache.flink.table.planner.plan.utils.AggregateUtil$.$anonfun$transformToAggregateInfoList$1(AggregateUtil.scala:444)



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