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https://issues.apache.org/jira/browse/HIVE-16603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16216386#comment-16216386
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Lefty Leverenz commented on HIVE-16603:
---------------------------------------

Doc note:  This should be documented in the DDL wikidoc's sections on 
constraints.

* [DDL -- Create Table -- Constraints | 
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-Constraints]
* [DDL -- Alter Table Constraints | 
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-AlterTableConstraints]

Added a TODOC3.0 label.

> Enforce foreign keys to refer to primary keys or unique keys
> ------------------------------------------------------------
>
>                 Key: HIVE-16603
>                 URL: https://issues.apache.org/jira/browse/HIVE-16603
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>              Labels: TODOC3.0
>             Fix For: 3.0.0
>
>         Attachments: HIVE-16603.patch
>
>
> Follow-up on HIVE-16575.
> Currently we do not enforce foreign keys to refer to primary keys or unique 
> keys (as opposed to PostgreSQL and others); we should do that.



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