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From "Zoltan Haindrich (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-17378) CBO: HiveReduceExpressionsWithStatsRule can operate on IS_NULL and IS_NOT_NULL
Date Tue, 19 Sep 2017 13:33:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zoltan Haindrich updated HIVE-17378:
------------------------------------
    Status: Patch Available  (was: Open)

> CBO: HiveReduceExpressionsWithStatsRule can operate on IS_NULL and IS_NOT_NULL
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-17378
>                 URL: https://issues.apache.org/jira/browse/HIVE-17378
>             Project: Hive
>          Issue Type: Bug
>          Components: CBO
>    Affects Versions: 3.0.0
>            Reporter: Gopal V
>            Assignee: Zoltan Haindrich
>         Attachments: HIVE-17378.01.patch
>
>
> {code}
>  * Currently we support the simplification of =, >=, <=, >, <, and
>  * IN operations.
>  */
> {code}
> IS_NULL and IS_NOT_NULL are closely related and can be processed by this rule.



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