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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6576) A immediate Fk constraint blows up iff its referenced PK is deferred and we modify a duplicate key column
Date Mon, 02 Jun 2014 13:08:02 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14015361#comment-14015361
] 

Dag H. Wanvik commented on DERBY-6576:
--------------------------------------

Regressions ran ok.


> A immediate Fk constraint blows up iff its referenced PK is deferred and we modify a
duplicate key column
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-6576
>                 URL: https://issues.apache.org/jira/browse/DERBY-6576
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Dag H. Wanvik
>            Assignee: Dag H. Wanvik
>         Attachments: derby-6576-2.diff, derby-6576-3.diff, derby-6576-3.status, derby-6576-cascade-setnull.diff,
derby-6576-cascade-setnull.status, derby-6576-forbid-deferred+cascade-set-null-1.diff, derby-6576-forbid-deferred+cascade-set-null-1.status,
derby-6576.diff, derby-6576.status
>
>
> Similar to the issue in DERBY-6559, except here we modify the key in the referenced table.
This leads Derby to check for any referencing FK and throw, even if there are other (formerly)
duplicate rows that satisfy the FK constraint.



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