SQL Server自动备份脚本

         这几天在给企业培训时，帮助他们写了一个备份的脚本，留给你们分享吧。此脚本的目的是，每周日作彻底备份，每周一到周六作差别备份，每周的备份写入到一个备份设备当中，备份设备起名规则为“备份设备名+周日日期”，下周备份再从新备份到一个新的备份设备中。此脚本编写完之后，能够作成做业，让它天天自动完成就能够了。

 

declare @device varchar(30); declare @filename varchar(50); declare @datetime varchar(50); declare @weekname varchar(50); declare @weeknametmp varchar(4); declare @weekday int; set @weekname=datename(weekday,getdate()); set @datetime =  convert(varchar(20),getdate(),112); set @device= 'NWdevice' + @datetime; set @filename='c:\NWdevice'+@datetime+'.bak'; set @weeknametmp=substring(@weekname,3,1); if (@weeknametmp='一')               set @weekday=1; else if (@weeknametmp='二')               set @weekday=2; else if (@weeknametmp='三')                set @weekday=3; else if (@weeknametmp='四')                 set @weekday=4; else if (@weeknametmp='五')                 set @weekday=5; else if (@weeknametmp='六')                 set @weekday=6; else if (@weeknametmp='日')                 set @weekday=0; set @datetime =  convert(varchar(20),getdate()-@weekday,112); set @device= 'NWdevice' + @datetime; set @filename='c:\NWdevice'+@datetime+'.bak' if (@weekname='星期日')                  begin                  execute sp_addumpdevice 'disk',@device,@filename;                   backup database northwind to @device                   end else                   begin                   backup database northwind to @device with differential                   end