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https://issues.apache.org/jira/browse/DERBY-3330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anurag Shekhar updated DERBY-3330:
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Attachment: derby-3330-testcase.diff
derby-3330v4.diff
derby-3330-testcase.diff has a test case to test unique constraint on nullable
column.
change between derby-3330v3.diff derby-3330v4.diff
Fixed one bug related to deleted keys exposed by the above test case.
> 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: derby-3330-testcase.diff, derby-3330.diff,
> derby-3330v2.diff, derby-3330v3.diff, derby-3330v4.diff
>
>
> Allow unique constraint over nullable field. Right now derby support unique
> constraint only over not null columns.
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