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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4693) column rename looses 'identity' attribute.
Date Sat, 05 Jun 2010 19:07:54 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4693?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bryan Pendleton updated DERBY-4693:
-----------------------------------

    Assignee: Bryan Pendleton

Thanks for tracking this problem down, Brett. It certainly appears
that RENAME COLUMN isn't maintaining the autoincrement
information properly. I'll see if I can fix it.


> 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
>
> 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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