[jira] [Assigned] (SPARK-15688) RelationalGroupedDataset.toDF should not add group by expressions that are already added in the aggregate expressions.

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-15688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-15688:
------------------------------------

    Assignee:     (was: Apache Spark)

> RelationalGroupedDataset.toDF should not add group by expressions that are already added in the aggregate expressions.
> ----------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-15688
>                 URL: https://issues.apache.org/jira/browse/SPARK-15688
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Yin Huai
>
> For {{df.groupBy("col").agg($"col", count("*"))`}}, it is kind of weird to have col appearing twice in the result. Seems we can avoid of output group by expressions twice if it already a part of {{agg}}. Looks like RelationalGroupedDataset.toDF is the place to change.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org