use master go declare @Database nvarchar(256),@Path nvarchar(2048) select @Database=N'AdventureWorks',@Path=N'D:/TDDOWNLOAD/' declare @sql nvarchar(max) select @sql =N'BACKUP DATABASE '+@Database+N' TO DISK = '''+@Path+@Database+N'_DIFF_'+REPLACE(REPLACE(REPLACE(convert(nvarchar(30),getdate(),126),'-','_'),':','_'),'.','_')+N'.bak'' WITH DIFFERENTIAL' exec (@sql)
差异备份之前,必须要就一个基准备份,也就是完整备份
参考:http://blog.youkuaiyun.com/ylqmf/archive/2010/07/08/5721220.aspx