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From "Brett Wooldridge (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-5179) Support ALTER DATABASE to change collation
Date Thu, 07 Apr 2011 01:04:05 GMT
Support ALTER DATABASE to change collation
------------------------------------------

                 Key: DERBY-5179
                 URL: https://issues.apache.org/jira/browse/DERBY-5179
             Project: Derby
          Issue Type: Improvement
          Components: SQL, Store
            Reporter: Brett Wooldridge


DERBY-1748 added the ability to control the collation of the database during database creation,
but leaves users with existing databases with no way to upgrade their databases.  In the case
of my company, we have many Derby deployments in the field in production, and dropping and
recreating the database during upgrade is not possible (or acceptable).

Similar to MySQL, Derby should support ALTER DATABASE to change the default collation of a
database.  For reference, they MySQL syntax is:

ALTER {DATABASE | SCHEMA} [db_name]
    alter_specification ...

alter_specification:
    [DEFAULT] CHARACTER SET [=] charset_name
  | [DEFAULT] COLLATE [=] collation_name

I would suggest that this syntax is perfectly acceptable, and should be adopted by Derby.



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