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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-18241) Query with LEFT SEMI JOIN producing wrong result
Date Tue, 12 Dec 2017 02:29:02 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16286992#comment-16286992
] 

Jesus Camacho Rodriguez commented on HIVE-18241:
------------------------------------------------

[~vgarg], another quick comment before pushing it: could we add some data to the new test
or modify the test so that it produces data (even if it is a few rows)? I think that will
be important so we do not regress in the future.

> Query with LEFT SEMI JOIN producing wrong result
> ------------------------------------------------
>
>                 Key: HIVE-18241
>                 URL: https://issues.apache.org/jira/browse/HIVE-18241
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Vineet Garg
>            Assignee: Vineet Garg
>         Attachments: HIVE-18241.1.patch, HIVE-18241.2.patch
>
>
> Following query produces wrong result
> {code:sql}
> select key, value from src outr left semi join (select a.key, b.value from src a join
(select distinct value from src) b on a.value > b.value group by a.key, b.value) inr on
outr.key=inr.key and outr.value=inr.value;
> {code}
> Expected result is empty set but it output bunch of rows.
> Schema for {{src}} table could be find in {{data/scripts/q_test_init.sql}}



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