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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4693) column rename looses 'identity' attribute.
Date Mon, 14 Jun 2010 01:37:15 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12878458#action_12878458
] 

Bryan Pendleton commented on DERBY-4693:
----------------------------------------

Committed to the trunk as revision 954344.

I'll investigate merging this fix back to the 10.6 branch.


> column rename looses 'identity' attribute.
> ------------------------------------------
>
>                 Key: DERBY-4693
>                 URL: https://issues.apache.org/jira/browse/DERBY-4693
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.3.1.4, 10.6.1.0
>         Environment: ubuntu, java 1.5
>            Reporter: Brett Sutton
>            Assignee: Bryan Pendleton
>            Priority: Minor
>         Attachments: patch.diff
>
>
> renaming an identity column causes the column to loose its 'identity' attribute.
> you can reproduce the problem as follows:
> CREATE TABLE njr_version ( id INTEGER generated always as identity, databaseVersion INTEGER);
> insert into njr_version (databaseVersion) values (10);
> -- column inserted successfully.
> rename column njr_version.id to idVersion;
> insert into njr_version (databaseVersion) values (10);
> Error: Column 'IDVERSION'  cannot accept a NULL value.
> To compound this problem there is no way to restore the renamed column's identity attribute
as the alter command doesn't let you set an identity attribute. The only work around is to
create a new table and copy the data across.

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