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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-16934) Transform COUNT(x) into COUNT() when x is not nullable
Date Wed, 21 Jun 2017 19:29:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-16934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jesus Camacho Rodriguez updated HIVE-16934:
-------------------------------------------
    Attachment: HIVE-16934.patch

> Transform COUNT(x) into COUNT() when x is not nullable
> ------------------------------------------------------
>
>                 Key: HIVE-16934
>                 URL: https://issues.apache.org/jira/browse/HIVE-16934
>             Project: Hive
>          Issue Type: Improvement
>          Components: Logical Optimizer
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-16934.patch
>
>
> Add a rule to simplify COUNT aggregation function if possible, removing expressions that
cannot be nullable from its parameters.



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