如何恢复数据库备份到一个已存在的正在使用的数据库上

USE master  -- （Can’t sit in the database whilst its being restored！）
GO

ALTER DATABASE MyDatabase SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO

-- Restore Full Backup
RESTORE DATABASE MyDatabase
FROM DISK = ’x:MSSQLBACKUPMyBackupFilename_Full.BAK’
WITH
   REPLACE,
   NORECOVERY,  -- Use if more T/Logs to recover
--    RECOVERY,  -- Use if NO more T/Logs to recover
   STATS = 10,  -- Show progress （every 10%）
MOVE ’MyDatabase_Data’ TO ’x:MSSQLDATAMyDatabase.mdf’,
MOVE ’MyDatabase_Log’ TO ’x:MSSQLDATAMyDatabase.ldf’
GO

-- Optional restore Differential Backup
RESTORE DATABASE MyDatabase
FROM DISK = ’x:MSSQLBACKUPMyDatabase_Diff.BAK’
WITH
--    RECOVERY  -- Use if NO more file to recover
   NORECOVERY  -- Use if there are T/Logs to recover
GO

-- Optional restore Transaction Log Backup
RESTORE DATABASE MyDatabase
FROM DISK = ’x:MSSQLBACKUPMyDatabase_yyyymmdd_hhmm_Trans.BAK’
WITH
--    RECOVERY  -- Use if NO more T/Logs to recover
   NORECOVERY  -- Use if more T/Logs to recover
GO

-- Set the database ready for use （after all backups have been restored）
RESTORE DATABASE MyDatabase RECOVERY
GO

-- Rename logical names （only needed if restoring from a backup for a Different database）:
ALTER DATABASE MyDatabase
   MODIFY FILE （NAME = ’OrigDatabase_Data’, NEWNAME = ’MyDatabase_data’）
GO
ALTER DATABASE MyDatabase
   MODIFY FILE （NAME = ’OrigDatabase_Log’, NEWNAME = ’MyDatabase_log’）
GO