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Posted to issues@flink.apache.org by "Fabian Hueske (JIRA)" <ji...@apache.org> on 2017/05/16 11:13:04 UTC

[jira] [Commented] (FLINK-6598) Fix `DataStreamGroupAggregateRule` matches error.

    [ https://issues.apache.org/jira/browse/FLINK-6598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16012159#comment-16012159 ] 

Fabian Hueske commented on FLINK-6598:
--------------------------------------

Why should {{agg.getAggCallList.isEmpty}} not be allowed? I think it can be executed and returns distinct keys. IMO, that's a useful operation.

> Fix `DataStreamGroupAggregateRule` matches error.
> -------------------------------------------------
>
>                 Key: FLINK-6598
>                 URL: https://issues.apache.org/jira/browse/FLINK-6598
>             Project: Flink
>          Issue Type: Bug
>          Components: Table API & SQL
>            Reporter: sunjincheng
>            Assignee: sunjincheng
>             Fix For: 1.3.0
>
>
> Change {{DataStreamGroupWindowAggregateRule}} and {{DataStreamGroupAggregateRule}} retrun from {{!distinctAggs && !groupSets && !agg.indicator}}  to {{!distinctAggs && !groupSets && !agg.indicator && !agg.getAggCallList.isEmpty}}.



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