SELECT DISTINCT'exec sp_detach_db ''' + DB_NAME(dbid) + ''';'
FROM master.dbo.sysaltfiles
WHERE SUBSTRING(filename,1,1) IN ('E','F')
AND DATABASEPROPERTYEX( DB_NAME(dbid) , 'Status' ) = 'ONLINE'
AND DB_NAME(dbid) NOT IN ('master','tempdb','msdb','model')
GO siehe auch Attach all Databases from Dir