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https://issues.apache.org/jira/browse/HIVE-784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Phabricator updated HIVE-784:
-----------------------------

    Attachment: D13443.2.patch

hbutani updated the revision "HIVE-784 [jira] Support uncorrelated subqueries 
in the WHERE clause".

Reviewers: ashutoshc, JIRA

REVISION DETAIL
  https://reviews.facebook.net/D13443

CHANGE SINCE LAST DIFF
  https://reviews.facebook.net/D13443?vs=41457&id=41871#toc

AFFECTED FILES
  ql/src/java/org/apache/hadoop/hive/ql/ErrorMsg.java
  ql/src/java/org/apache/hadoop/hive/ql/parse/HiveParser.g
  ql/src/java/org/apache/hadoop/hive/ql/parse/IdentifiersParser.g
  ql/src/java/org/apache/hadoop/hive/ql/parse/QBSubQuery.java
  ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
  ql/src/java/org/apache/hadoop/hive/ql/parse/SubQueryUtils.java
  ql/src/java/org/apache/hadoop/hive/ql/parse/TypeCheckProcFactory.java
  ql/src/test/queries/clientnegative/subquery_exists_implicit_gby.q
  ql/src/test/queries/clientnegative/subquery_in_groupby.q
  ql/src/test/queries/clientnegative/subquery_in_select.q
  ql/src/test/queries/clientnegative/subquery_multiple_cols_in_select.q
  ql/src/test/queries/clientnegative/subquery_notexists_implicit_gby.q
  ql/src/test/queries/clientnegative/subquery_subquery_chain.q
  ql/src/test/queries/clientnegative/subquery_windowing_corr.q
  ql/src/test/queries/clientnegative/subquery_with_or_cond.q
  ql/src/test/queries/clientpositive/subquery_exists.q
  ql/src/test/queries/clientpositive/subquery_in.q
  ql/src/test/queries/clientpositive/subquery_multiinsert.q
  ql/src/test/queries/clientpositive/subquery_notexists.q
  ql/src/test/queries/clientpositive/subquery_notin.q
  ql/src/test/results/clientnegative/subquery_exists_implicit_gby.q.out
  ql/src/test/results/clientnegative/subquery_in_groupby.q.out
  ql/src/test/results/clientnegative/subquery_in_select.q.out
  ql/src/test/results/clientnegative/subquery_multiple_cols_in_select.q.out
  ql/src/test/results/clientnegative/subquery_notexists_implicit_gby.q.out
  ql/src/test/results/clientnegative/subquery_subquery_chain.q.out
  ql/src/test/results/clientnegative/subquery_windowing_corr.q.out
  ql/src/test/results/clientnegative/subquery_with_or_cond.q.out
  ql/src/test/results/clientpositive/subquery_exists.q.out
  ql/src/test/results/clientpositive/subquery_in.q.out
  ql/src/test/results/clientpositive/subquery_multiinsert.q.out
  ql/src/test/results/clientpositive/subquery_notexists.q.out
  ql/src/test/results/clientpositive/subquery_notin.q.out

To: JIRA, ashutoshc, hbutani


> Support uncorrelated subqueries in the WHERE clause
> ---------------------------------------------------
>
>                 Key: HIVE-784
>                 URL: https://issues.apache.org/jira/browse/HIVE-784
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Ning Zhang
>            Assignee: Harish Butani
>         Attachments: D13443.1.patch, D13443.2.patch, HIVE-784.1.patch.txt, 
> HIVE-784.2.patch, SubQuerySpec.pdf, tpchQueriesUsingSubQueryClauses.sql
>
>
> Hive currently only support views in the FROM-clause, some Facebook use cases 
> suggest that Hive should support subqueries such as those connected by 
> IN/EXISTS in the WHERE-clause. 



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