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https://issues.apache.org/jira/browse/HIVE-13639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15270581#comment-15270581
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Ashutosh Chauhan commented on HIVE-13639:
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Can you create a RB for this?
> CBO rule to pull up constants through Union
> -------------------------------------------
>
> Key: HIVE-13639
> URL: https://issues.apache.org/jira/browse/HIVE-13639
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Affects Versions: 2.1.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-13639.patch
>
>
> After HIVE-13068 goes in, we need to pull up constants through Union
> operator, as it was done previously by ConstantPropagate in Hive.
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