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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12223) Filter on Grouping__ID does not work properly
Date Thu, 22 Oct 2015 16:08:27 GMT

     [ https://issues.apache.org/jira/browse/HIVE-12223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jesus Camacho Rodriguez updated HIVE-12223:
-------------------------------------------
    Attachment: HIVE-12223.01.patch

> Filter on Grouping__ID does not work properly
> ---------------------------------------------
>
>                 Key: HIVE-12223
>                 URL: https://issues.apache.org/jira/browse/HIVE-12223
>             Project: Hive
>          Issue Type: Bug
>          Components: Logical Optimizer
>    Affects Versions: 1.3.0, 2.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>             Fix For: 1.3.0, 2.0.0
>
>         Attachments: HIVE-12223.01.patch, HIVE-12223.patch
>
>
> Consider the following query:
> {noformat}
> SELECT key, value, GROUPING__ID, count(*)
> FROM T1
> GROUP BY key, value
> GROUPING SETS ((), (key))
> HAVING GROUPING__ID = 1
> {noformat}
> This query will not return results. The reason is that a "constant" placeholder is introduced
by SemanticAnalyzer for the GROUPING\__ID column. At execution time, this placeholder is replaced
by the actual value of the GROUPING\__ID. As it is a constant, the Hive optimizer will evaluate
statically whether the condition is met or not, leading to incorrect results. A possible solution
is to transform the placeholder constant into a function over the grouping keys.



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