declare @dbname varchar(255)declare @back_path varchar(255)set @dbname=‘emcp‘set @back_path= ‘e:\‘+@dbname+‘\‘+@dbname    +convert(varchar(9),getdate(),112)    +CAST(datepart(hour,getdate()) as char(2))    +CAST(datepart(minute,getdate()) as char(2))    +CAST(datepart(second,getdate()) as CHAR(2))    +‘.bak‘exec(‘use [‘+@dbname+‘]‘)exec(‘backup database [‘+@dbname+‘] to disk=‘‘‘+@back_path+‘‘‘‘)