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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-1490) Provide ALTER TABLE RENAME COLUMN functionality
Date Mon, 06 Nov 2006 19:59:42 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1490?page=comments#action_12447519 ] 
            
Bryan Pendleton commented on DERBY-1490:
----------------------------------------

Thanks to all for the review (no, you're not being a pain at all!)

Good catch on the error message; it's easy to fix, and I'll revise the patch to say RENAME
COLUMN not ALTER TABLE.

Rajesh, I think the suggestion about RENAME CONSTRAINT is intriguing, and I think it is worth
filing for future investigation. I don't know how often users with to be able to rename a
constraint, but I agree that having to drop and re-add it just in order to rename it is awkward.

Army, regarding the sqlAuthorization issue, I don't have a definite resolution. For now, the
tests in lang/altertable.sql run only with sqlAuthorization=true. 


> Provide ALTER TABLE RENAME COLUMN functionality
> -----------------------------------------------
>
>                 Key: DERBY-1490
>                 URL: http://issues.apache.org/jira/browse/DERBY-1490
>             Project: Derby
>          Issue Type: New Feature
>          Components: Documentation, SQL
>    Affects Versions: 10.0.2.0, 10.0.2.1, 10.1.1.0, 10.2.1.6, 10.1.2.1, 10.1.3.1
>            Reporter: Bryan Pendleton
>         Assigned To: Bryan Pendleton
>         Attachments: 1490_cannot_patch.jpg, derby1490_v1_needMoreTests.diff, renameColumn_v2_with_tests.diff,
renameColumn_v3_after_review.diff
>
>
> Provide a way to rename a column in an existing table. Possible syntax could be:
>   ALTER TABLE tablename RENAME COLUMN oldcolumn TO newcolumn;
> Feature should properly handle the possibility that the column is currently used in constraints,
views, indexes, triggers, etc.

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