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From "Ashutosh Chauhan (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-2901) Hive union with NULL constant and string in same column returns all null
Date Fri, 13 Apr 2012 07:26:23 GMT

     [ https://issues.apache.org/jira/browse/HIVE-2901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Chauhan updated HIVE-2901:
-----------------------------------

    Fix Version/s: 0.9.0
    
> Hive union with NULL constant and string in same column returns all null
> ------------------------------------------------------------------------
>
>                 Key: HIVE-2901
>                 URL: https://issues.apache.org/jira/browse/HIVE-2901
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Kevin Wilfong
>            Assignee: Navis
>            Priority: Critical
>             Fix For: 0.9.0
>
>         Attachments: HIVE-2901.D2541.1.patch, HIVE-2901.D2541.2.patch, HIVE-2901.D2541.3.patch
>
>
> select x from (select value as x from src union all select NULL as x from src)a;
> This query produces all nulls, where value is a string column.
> Notably, 
> select x from (select key as x from src union all select NULL as x from src)a;
> where key is a string, but can be cast to a double, the query returns correct results.

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