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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-17766) Support non-equi LEFT SEMI JOIN
Date Sat, 28 Oct 2017 00:19:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jesus Camacho Rodriguez updated HIVE-17766:
-------------------------------------------
    Attachment: HIVE-17766.02.patch

> Support non-equi LEFT SEMI JOIN
> -------------------------------
>
>                 Key: HIVE-17766
>                 URL: https://issues.apache.org/jira/browse/HIVE-17766
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Planning
>            Reporter: Vineet Garg
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-17766.01.patch, HIVE-17766.02.patch, HIVE-17766.patch
>
>
> Currently we get an error like {noformat}Non equality condition not supported in Semi-Join{noformat}
> This is required to generate better plan for EXISTS/IN correlated subquery where such
queries are transformed into LEFT SEMI JOIN.



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