BACKUP DATABASE PCT TO DISK =‘D:\Company\Data\SQL Server\Backup\PCT.bak‘;

RESTORE DATABASE PCT
FROM DISK = ‘D:\Company\Data\SQL Server\Backup\PCT.bak‘
WITH RECOVERY;

BACKUP DATABASE PCT TO DISK = ‘D:\Company\Data\SQL Server\Backup\PCT_Differential.bak‘ WITH DIFFERENTIAL;
GO

RESTORE DATABASE PCT 
FROM  DISK = ‘D:\Company\Data\SQL Server\Backup\PCT.bak‘
WITH  FILE = 1,  
NOUNLOAD,  
STATS = 10, 
NORECOVERY
GO

RESTORE DATABASE PCT 
FROM  DISK = ‘D:\Company\Data\SQL Server\Backup\PCT_Differential.bak‘
WITH  FILE = 1,  
NOUNLOAD,  
STATS = 10
GO

BACKUP LOG PCT TO DISK =‘D:\Company\Data\SQL Server\Backup\PCT_Log.bak‘;

BACKUP LOG PCT TO DISK =‘D:\Company\Data\SQL Server\Backup\PCT_TailLog.bak‘ WITH NORECOVERY;

USE master;
BACKUP DATABASE PCT
TO DISK =‘D:\Company\Data\SQL Server\Backup\PCT.bak‘
WITH INIT;
GO

-- Perform a transaction log backup of the Test database
BACKUP Log PCT
TO DISK =‘D:\Company\Data\SQL Server\Backup\PCT_log.bak‘
WITH INIT;
GO

-- ....<FAILURE OCCURS HERE>....

-- Back up the tail of the log to prepare for restore
BACKUP Log PCT
TO DISK =‘D:\Company\Data\SQL Server\Backup\PCT_taillog.bak‘
WITH NORECOVERY, INIT;
GO

-- Restore the full backup
RESTORE DATABASE PCT
FROM DISK = ‘D:\Company\Data\SQL Server\Backup\PCT.bak‘
WITH NORECOVERY;

-- Apply the transaction log backup
RESTORE LOG PCT
FROM DISK = ‘D:\Company\Data\SQL Server\Backup\PCT_log.bak‘
WITH NORECOVERY;

-- Apply the tail log backup
RESTORE LOG PCT
FROM DISK = ‘D:\Company\Data\SQL Server\Backup\PCT_taillog.bak‘
WITH NORECOVERY;

-- Recover the database
RESTORE DATABASE PCT
WITH RECOVERY;
GO

-- FULL BACKUP at 2:00 AM
USE master ;
BACKUP DATABASE PCT
TO DISK = ‘D:\Company\Data\SQL Server\Backup\PCT.bak‘
WITH INIT ;
GO

-- LOG BACKUP 1 at 2:15 AM
USE master ;
BACKUP LOG PCT
TO DISK = ‘D:\Company\Data\SQL Server\Backup\PCT_log.bak‘
WITH INIT ;
GO

-- LOG BACKUP 2 at 2:30 AM
USE master ;
BACKUP LOG PCT
TO DISK = ‘D:\Company\Data\SQL Server\Backup\PCT_log2.bak‘
WITH INIT ;
GO

--有时候很遗憾，不能进行完整恢复：例如由于灾难当前事务日志不可用。这样的话，我们会需要还原数据库导最近日志备份的末尾
--如果灾难性故障发生在上午2:30，我们将需要恢复数据库到上午2:30的尾日志备份状态。
--因为不能进行尾日志备份，我们只能恢复到特定点，我们要使用STOPAT选项。


--RESTORE Full backup
RESTORE DATABASE PCT
FROM DISK = ‘D:\Company\Data\SQL Server\Backup\PCT.bak‘
WITH NORECOVERY;

--RESTORE Log file 1
RESTORE LOG PCT
FROM DISK = ‘D:\Company\Data\SQL Server\Backup\PCT_log.bak‘
WITH NORECOVERY, STOPAT = ‘Jan 01, 2020 12:00 AM‘;

--RESTORE Log file 2
RESTORE LOG PCT
FROM DISK = ‘D:\Company\Data\SQL Server\Backup\PCT_Log2.bak‘
WITH NORECOVERY, STOPAT = ‘Jan 01, 2020 12:00 AM‘;

--Recover the database
RESTORE DATABASE PCT
WITH RECOVERY;
GO