Continuous Integration of database scripts

I've recently got Cruise Control working on our development server to get latest from source safe, build our .NET assemblies and execute all unit tests. I'm extremely pleased with this and has really proved it's worth recently to show complete visibility to the team of failed builds. Any broken builds which do occur get turned around very quickly; I would strongly encourage anyone who hasn't already integrated cruise control into their build process to do so now.

I have also recently taken this further by integrating database script changes into the process. In source safe we keep all the creation scripts for tables / stored procedures / UDFs e.t.c. When any changes are detected on the VSS database the scripts are applied using a few nant tasks and then the unit tests are re executed. This has quickly caught a few issues recently when stored procedures weren't in sync with the .NET code e.g. wrong data types or too many parameters in the DB compared to the client code.

Like most development teams we have to maintain a few versions of our application and upgrade databases from old version to new versions. The latest database script are rerunnable against old versions of the schema i.e. it will add columns / stored procedures if their not already there, Ideally I would like to execute the database scripts against a number of different versions of the database and then execute the unit tests against the newly updated database to ensure the tests still passed. This would find issues for clients upgrading very quickly. I'd be interested in hearing from anyone else who has tried to automatically integrate database changes within their continous integration process.