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https://issues.apache.org/jira/browse/HIVE-9318?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashutosh Chauhan updated HIVE-9318:
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Attachment: HIVE-9318.patch
If there are subsequent unions, we can merge them.
> Add UnionMerge rule on cbo path
> -------------------------------
>
> Key: HIVE-9318
> URL: https://issues.apache.org/jira/browse/HIVE-9318
> Project: Hive
> Issue Type: Improvement
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-9318.patch
>
>
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