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From Mike Matrigali <mikem_...@sbcglobal.net>
Subject Re: [jira] Commented: (DERBY-3456) Allow removing not null from collumns particpating in unique constraint.
Date Fri, 07 Mar 2008 19:07:43 GMT
I have not looked at code so not sure how hard to determine which error 
to throw, but seems like you should add a new error message for the new 
code to use, and soft upgrade can continue to use
the old message.  This is assuming there is no SQL standard for this
exact error number.

Anurag Shekhar (JIRA) wrote:
>     [ https://issues.apache.org/jira/browse/DERBY-3456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12576311#action_12576311
> Anurag Shekhar commented on DERBY-3456:
> ---------------------------------------
> This error message is thrown while setting  a unique 
> constraint column to null able in soft upgrade mode. 
> In one of the two instances (soft upgrade or regular run) message 
> will be wrong.  Changed  message will give a wrong info in soft upgrade
> mode claiming that user was trying to modify a column from primary key
>  when he is actually modifying  the constraint.
> Is it ok to return wrong info in soft upgrade mode ? Probably we can 
> mention it in release note that in case of soft upgrade mode a wrong
> info will be thrown.
>> 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:
>>         Environment: all
>>            Reporter: Anurag Shekhar
>>            Assignee: Anurag Shekhar
>>         Attachments: altertable.diff, derby-3456-Tests.diff, derby-3456-Tests_v2.diff,
derby-3456v1.diff, derby-3456v2.diff, derby-3456v3.diff, derby-3456v4.diff, derby-3456v5.diff,
setnulltest.diff, upgradetests.diff, upgradetests_v2.diff
>> Enable alter table to change a column that participates in a unique constraint to
allow nulls.

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