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Posted to dev@hive.apache.org by "Jitendra Nath Pandey (JIRA)" <ji...@apache.org> on 2013/08/30 19:22:00 UTC

[jira] [Resolved] (HIVE-4575) In place filtering in Not Filter doesn't handle nulls correctly.

     [ https://issues.apache.org/jira/browse/HIVE-4575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jitendra Nath Pandey resolved HIVE-4575.
----------------------------------------

    Resolution: Later

The not expression is currently not supported in vectorized path. This expression will need a bit of re-implementation, at which point, this jira will be addressed too.
                
> In place filtering in Not Filter doesn't handle nulls correctly.
> ----------------------------------------------------------------
>
>                 Key: HIVE-4575
>                 URL: https://issues.apache.org/jira/browse/HIVE-4575
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Jitendra Nath Pandey
>            Assignee: Jitendra Nath Pandey
>
>  The FilterNotExpr evaluates the child expression and takes the compliment of the selected vector. Since child expression filters out null values, the compliment includes the nulls in the output. This is incorrect because not(null) = null.

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