T-SQL 汇总之二 备份语句

 --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