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Posted to derby-dev@db.apache.org by "Anurag Shekhar (JIRA)" <ji...@apache.org> on 2008/02/01 13:45:08 UTC

[jira] Updated: (DERBY-3330) provide support for unique constraint over nullable columns

     [ https://issues.apache.org/jira/browse/DERBY-3330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Anurag Shekhar updated DERBY-3330:
----------------------------------

    Attachment: UniqueConstraint_Implementation.html

Attaching the implementation documents. I will merge it with the functional spec after reviews.

> provide support for unique constraint over nullable columns
> -----------------------------------------------------------
>
>                 Key: DERBY-3330
>                 URL: https://issues.apache.org/jira/browse/DERBY-3330
>             Project: Derby
>          Issue Type: New Feature
>          Components: Store
>    Affects Versions: 10.4.0.0
>         Environment: all
>            Reporter: Anurag Shekhar
>            Assignee: Anurag Shekhar
>         Attachments: BTreeController.diff, derby-3330-testcase.diff, derby-3330.diff, derby-3330v2.diff, derby-3330v3.diff, derby-3330v4.diff, FunctionalSpec_DERBY-3330-V2.html, FunctionalSpec_DERBY-3330.html, UniqueConstraint_Implementation.html
>
>
> Allow unique constraint over nullable field. Right now derby support unique constraint only over not null columns.

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