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Posted to derby-dev@db.apache.org by "Mike Matrigali (JIRA)" <ji...@apache.org> on 2014/05/20 18:32:38 UTC

[jira] [Commented] (DERBY-3888) ALTER TABLE ... ADD COLUMN cannot add identity columns

    [ https://issues.apache.org/jira/browse/DERBY-3888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14003591#comment-14003591 ] 

Mike Matrigali commented on DERBY-3888:
---------------------------------------

Does the SQL standard speak at all to this issue one way or another?

If not, does anyone know the behavior in other databases with respect to this issue?

> ALTER TABLE ... ADD COLUMN cannot add identity columns
> ------------------------------------------------------
>
>                 Key: DERBY-3888
>                 URL: https://issues.apache.org/jira/browse/DERBY-3888
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.4.2.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>            Priority: Minor
>              Labels: derby_triage10_10
>         Attachments: reenable-v2.diff, reenable.diff
>
>
> ALTER TABLE .. ADD COLUMN cannot be used to add an identity column. There is code to handle identity columns, but it is disabled in the parser. See this thread on derby-user:
> http://mail-archives.apache.org/mod_mbox/db-derby-user/200708.mbox/%3C46C5DAA9.8080507@sbcglobal.net%3E
> The code was disabled for DB2 compatibility. Since DB2 compatibility is not a goal for Derby, we should see if we could re-enable it.



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