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https://issues.apache.org/jira/browse/DERBY-3456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12575740#action_12575740
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Anurag Shekhar commented on DERBY-3456:
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I have created DERBY-3502 to address issues related to shared backing indexed.
Please ignore derby-3456v4.diff
> Allow removing not null from collumns particpating in unique constraint.
> ------------------------------------------------------------------------
>
> Key: DERBY-3456
> URL: https://issues.apache.org/jira/browse/DERBY-3456
> Project: Derby
> Issue Type: Sub-task
> Components: SQL, Store
> Affects Versions: 10.4.0.0
> Environment: all
> Reporter: Anurag Shekhar
> Assignee: Anurag Shekhar
> Attachments: altertable.diff, derby-3456-Tests.diff,
> derby-3456v1.diff, derby-3456v2.diff, derby-3456v3.diff, derby-3456v4.diff,
> setnulltest.diff, upgradetests.diff, upgradetests_v2.diff
>
>
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