[jira] [Work started] (HIVE-4662) first_value can't have more than one order by column

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-4662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HIVE-4662 started by Jesus Camacho Rodriguez.
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> first_value can't have more than one order by column
> ----------------------------------------------------
>
>                 Key: HIVE-4662
>                 URL: https://issues.apache.org/jira/browse/HIVE-4662
>             Project: Hive
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 0.11.0
>            Reporter: Frans Drijver
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-4662.patch
>
>
> In the current implementation of the first_value function, it's not allowed to have more than one (1) order by column, as so:
> {quote}
> select distinct 
> first_value(kastr.DEWNKNR) over ( partition by kastr.DEKTRNR order by kastr.DETRADT, kastr.DEVPDNR )
> from RTAVP_DRKASTR kastr
> ;
> {quote}
> Error given:
> {quote}
> FAILED: SemanticException Range based Window Frame can have only 1 Sort Key
> {quote}



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