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https://issues.apache.org/jira/browse/HIVE-15673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15977822#comment-15977822
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Vineet Garg commented on HIVE-15673:
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Hi [~leftylev] It will be good to document this limitation. IMHO Subqueries in
the WHERE Clause is the most appropriate place to document this.
> Allow multiple queries with disjunction
> ---------------------------------------
>
> Key: HIVE-15673
> URL: https://issues.apache.org/jira/browse/HIVE-15673
> Project: Hive
> Issue Type: Sub-task
> Components: Query Planning
> Reporter: Vineet Garg
> Assignee: Vineet Garg
> Fix For: 3.0.0
>
> Attachments: HIVE-15673.1.patch, HIVE-15673.2.patch,
> HIVE-15673.3.patch, HIVE-15673.4.patch, HIVE-15673.5.patch, HIVE-15673.6.patch
>
>
> HIVE currently doesn't allow multiple subqueries with {{OR}} since calcite
> has a bug in determining logic for OR expression. See [CALCITE-1546
> |https://issues.apache.org/jira/browse/CALCITE-1546].
> Once calcite is released containing fix for the bug HIVE will need to lift
> the restriction and add tests cases
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