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

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-3888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Knut Anders Hatlen reassigned DERBY-3888:
-----------------------------------------

    Assignee:     (was: Knut Anders Hatlen)

Unassigning the issue since I'm not currently working on it.

The patch no longer works after DERBY-6542 and will have to be reworked. If we wait until DERBY-6414 is fixed, we can probably use {{AlterTableConstantAction.updateNewColumnToDefault()}} as it is to populate the new identity column.

> 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
>            Priority: Minor
>              Labels: derby_triage10_10
>         Attachments: reenable-v2.diff, reenable-v3.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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