[jira] [Commented] (FLINK-6124) support max/min aggregations for string type

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-6124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15953729#comment-15953729 ] 

ASF GitHub Bot commented on FLINK-6124:
---------------------------------------

Github user twalthr commented on the issue:

    https://github.com/apache/flink/pull/3593
  
    Thanks for the hint @shaoxuan-wang. I added the tests and will merge this.


> support max/min aggregations for string type
> --------------------------------------------
>
>                 Key: FLINK-6124
>                 URL: https://issues.apache.org/jira/browse/FLINK-6124
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Zhenghua Gao
>            Assignee: Zhenghua Gao
>             Fix For: 1.3.0
>
>
> Recently when I port some query to Flink SQL, I found currently min/max aggregations on string type is not supported and should be added.
> When min/max aggregations are used on string column, return min/max value by lexicographically order.
>  



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