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Posted to issues@kudu.apache.org by "Matthew Jacobs (JIRA)" <ji...@apache.org> on 2016/10/05 18:51:20 UTC

[jira] [Commented] (KUDU-1570) Support nullable primary keys

    [ https://issues.apache.org/jira/browse/KUDU-1570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15549632#comment-15549632 ] 

Matthew Jacobs commented on KUDU-1570:
--------------------------------------

It looks like this is actually not allowed in the SQL standard (T591 "UNIQUE constraints of possibly null columns" in the 2003 standard), so I retract my request for this feature :)

In fact, I'd prefer if we do not add it to Kudu to avoid complications with SQL mappings (Impala or other SQL engines). [~tlipcon], feel free to close this JIRA if you agree.

> Support nullable primary keys
> -----------------------------
>
>                 Key: KUDU-1570
>                 URL: https://issues.apache.org/jira/browse/KUDU-1570
>             Project: Kudu
>          Issue Type: New Feature
>          Components: impala, tablet
>            Reporter: Matthew Jacobs
>
> It would be helpful to support primary keys that can be nullable.



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