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From "Zheng Shao (JIRA)" <>
Subject [jira] Commented: (HIVE-734) problem in dealing with null
Date Fri, 07 Aug 2009 04:13:14 GMT


Zheng Shao commented on HIVE-734:

We do handle NULL in the WHERE clause and "AND", "OR" functions using the 3-value booleans.
 I am not sure whether we ignore NULL in join/group-by but that seems easy enough to do.
Do you have a specific example that the current Hive code breaks?

> problem in dealing with null
> ----------------------------
>                 Key: HIVE-734
>                 URL:
>             Project: Hadoop Hive
>          Issue Type: Bug
>            Reporter: Zheng Shao
>            Assignee: Ning Zhang
> This command fails with the following error:
> {code}
> hive/bin/hive -e "INSERT OVERWRITE LOCAL DIRECTORY 'abc' select null from zshao_tt"
> FAILED: Error in semantic analysis:
> java.lang.RuntimeException: Internal error: Cannot find ObjectInspector for VOID
> {code}
> When 'null' is replaced by '' it works.

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