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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2018/09/17 16:03:00 UTC
[jira] [Resolved] (HIVE-17044) Transform LEFT/RIGHT OUTER into
INNER join in the presence of FK relationship
[ https://issues.apache.org/jira/browse/HIVE-17044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jesus Camacho Rodriguez resolved HIVE-17044.
--------------------------------------------
Resolution: Fixed
Fix Version/s: 4.0.0
Fixed in HIVE-17040.
> Transform LEFT/RIGHT OUTER into INNER join in the presence of FK relationship
> -----------------------------------------------------------------------------
>
> Key: HIVE-17044
> URL: https://issues.apache.org/jira/browse/HIVE-17044
> Project: Hive
> Issue Type: Sub-task
> Components: Logical Optimizer
> Affects Versions: 3.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
> Fix For: 4.0.0
>
>
> Consider we are executing a LEFT OUTER join on two tables using their FK-UK/PK relationship. We might be able to transform the OUTER into an INNER join if the FK columns (OUTER relationship) are not nullable. Similarly for RIGHT OUTER join.
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