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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-3330v5.diff
This patch includes following changes since v4
1. Fixed Indentation issues
2. Added comments for new methods attributes and some code changes
3. Added code for soft upgrade
4.Removed unnecessary imports.
5. Modified left and right sibling comparison (details to follow).
6. Moved new attribute to end of the BTree file format.
7. Added comments about new file format.
8. Added new classes to support soft upgrade (as described in implementation
spec).
Pending task
Hard upgrade
> 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,
> derby-3330v5.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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