SqlServer 数据库完整备份及差异备份

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 --查询文件是否存在

 CREATE TABLE #tmp ([File Exists] BIT,[File is a Directory] BIT,[Parent Directory Exists] BIT)

  INSERT INTO #tmp ([File Exists],[File is a Directory],[Parent Directory Exists])

  EXEC master.dbo.xp_fileexist 'D:\Test.bak'

  SELECT * FROM #tmp

  DROP TABLE #tmp

 

 --完整备份数据库

 

 BACKUP DATABASE MyBakTest TO disK='D:\Test.bak' WITH FORMAT

 

 --对tb表插入第一条记录

 

 INSERT INTO tb_user(uname) VALUES('第一1次差异备份')

 

 --第一次差异备份

 

 BACKUP DATABASE MyBakTest TO disK='D:\Test_One_Dif.bak' WITH FORMAT,DIFFERENTIAL

 

 --对tb表插入第二条记录

 

 INSERT INTO tb_user(uname) VALUES('第二3次差异备份')

 

 --第二次差异备份

 

 BACKUP DATABASE MyBakTest TO disK='D:\Test_Two_Dif.bak' WITH FORMAT,DIFFERENTIAL

 

 --OK.现在直接还原.完整备份+第二次差异备份.看看第二条记录在不在.

 

 GO

 

 --完整备份还原

 RESTORE DATABASE MyBackTest2 FROM disK='D:\Test.bak' WITH REPLACE,norECOVERY

 

 RESTORE DATABASE MyBackTest2 FROM disK='D:\Test_one_Dif.bak' WITH RECOVERY

 

 --第二次差异备份还原

 RESTORE DATABASE MyBackTest2 FROM disK='D:\Test_Two_Dif.bak' WITH RECOVERY