问题
I am trying to attach MvcMusicStore.mdf to my .\SQLEXPRESS instance (sql server version 10.0.2531) in sql server 2008 R2 management studio. I got the db from this project: http://mvcsitemap.codeplex.com/releases/view/67151
When i am trying to attach i am getting an error?:
The database 'C:\PROJECTS\CODEPLEX\TFS10\MVCSITEMAP\BRANCHES\3.1.0\SRC\MVCSITEMAPPROVIDER\MVCMUSICSTORE\APP_DATA\MVCMUSICSTORE.MDF' cannot be opened because it is version 661. This server supports version 655 and earlier. A downgrade path is not supported.
Do I need to upgrade my sql server or what else?
回答1:
Your SQL Server Express instance is version 2008 and the database is from 2008 R2. You'll have to upgrade to SQL Server Express 2008 R2 to restore the database. It doesn't matter that you are using the 2008 R2 version of Management Studio - the database instance needs to be updated as well.
See SQL Server: Attach incorrect version 661
来源：https://stackoverflow.com/questions/12151705/database-cannot-be-opened-because-it-is-version-661-when-attaching-mdf-file