SQL SERVER 数据库备份代码实例

/**  批量循环备份用户数据库，做为数据库迁移临时用*/SET NOCOUNT ONDECLARE @d varchar(8) DECLARE @Backup_Flag NVARCHAR(10) SET @d=convert(varchar(8),getdate(),112) /***自定义选择备份哪些数据库****/--SET @Backup_Flag='UserDB'      -- 所用的用户数据库SET @Backup_Flag='AlwaysOnDB'    -- AlwaysOn 用户数据库CREATE TABLE #T (ID INT NOT NULL IDENTITY(1,1),SQLBak NVARCHAR(MAX) NOT NULL)IF @Backup_Flag='UserDB'BEGIN   INSERT INTO #T (SQLBak)  SELECT       'BACKUP DATABASE [' + name + '] TO DISK=''E:/Backup/' + NAME + '_Full_'+@d+'.bak'' WITH CHECKSUM,NOFORMAT,INIT,SKIP,COMPRESSION' AS 'SQLBak'  FROM  sys.databases  WHERE  database_id>4ENDIF @Backup_Flag='AlwaysOnDB' BEGIN   INSERT INTO #T (SQLBak)  SELECT       'BACKUP DATABASE [' + database_name + '] TO DISK=''E:/Backup/' + database_name + '_Full_'+@d+'.bak'' WITH CHECKSUM,NOFORMAT,INIT,SKIP,COMPRESSION' AS 'SQLBak'  FROM  sys.availability_databases_clusterENDDECLARE   @Minid INT ,  @Maxid INT ,  @sql VARCHAR(max)SELECT @Minid = MIN(id) ,    @Maxid = MAX(id)FROM  #TPRINT N'--打印备份脚本..........'WHILE @Minid <= @Maxid  BEGIN    SELECT @sql = SQLBak    FROM  #T    WHERE  id = @Minid ----exec (@sql)    PRINT ( @sql )    SET @Minid = @Minid + 1  ENDDROP TABLE #T