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https://issues.apache.org/jira/browse/HIVE-17766?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16225668#comment-16225668
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Ashutosh Chauhan commented on HIVE-17766:
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+1 pending tests
> 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-17766.03.patch, HIVE-17766.04.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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