[jira] [Assigned] (HIVE-581) improve group by syntax

["Zhenxiao Luo (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhenxiao Luo reassigned HIVE-581:
---------------------------------

    Assignee: Zhenxiao Luo  (was: Weizhe Shi)
    
> improve group by syntax
> -----------------------
>
>                 Key: HIVE-581
>                 URL: https://issues.apache.org/jira/browse/HIVE-581
>             Project: Hive
>          Issue Type: Improvement
>          Components: Clients, Query Processor
>            Reporter: Larry Ogrodnek
>            Assignee: Zhenxiao Luo
>              Labels: features
>         Attachments: HIVE-581.1.patch.txt
>
>
> It would be nice if group by allowed either column aliases or column position (like mysql).
> It can be burdensome to have to repeat UDFs both in the select and in the group by.
> e.g. instead of:
> select f1(col1), f2(col2), f3(col3), count(1) group by f1(col1), f2(col2), f3(col3);
> it would allow:
> select f1(col1), f2(col2), f3(col3), count(1) group by 1, 2, 3;

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