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From "John Sichi (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HIVE-741) NULL is not handled correctly in join
Date Thu, 12 Aug 2010 19:31:17 GMT

     [ https://issues.apache.org/jira/browse/HIVE-741?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

John Sichi reassigned HIVE-741:
-------------------------------

    Assignee: Amareshwari Sriramadasu  (was: Ning Zhang)

> NULL is not handled correctly in join
> -------------------------------------
>
>                 Key: HIVE-741
>                 URL: https://issues.apache.org/jira/browse/HIVE-741
>             Project: Hadoop Hive
>          Issue Type: Bug
>            Reporter: Ning Zhang
>            Assignee: Amareshwari Sriramadasu
>
> With the following data in table input4_cb:
> Key        Value
> ------       --------
> NULL     325
> 18          NULL
> The following query:
> {code}
> select * from input4_cb a join input4_cb b on a.key = b.value;
> {code}
> returns the following result:
> NULL    325    18   NULL
> The correct result should be empty set.
> When 'null' is replaced by '' it works.

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