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https://issues.apache.org/jira/browse/HIVE-92?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Namit Jain updated HIVE-92:
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Attachment: patch-union.1.txt
> union all has a problem if no embedding select is present
> ---------------------------------------------------------
>
> Key: HIVE-92
> URL: https://issues.apache.org/jira/browse/HIVE-92
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Namit Jain
> Attachments: patch-union.1.txt, patch-union.txt, patch1.txt
>
>
> select s2.key as key, s2.value as value from src s2
> UNION ALL
> select s1.key as key, s1.value as value from src s1;
> does not work.
> The code assumes that either it is a join or only one source is present
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