SQL查询执行某条SQL语句所花费的时间

declare @d datetime
set @d = getdate()
select top 10 U_Name from Test1 where ID not in (select top 30 ID from Test1 order by ID desc) order by ID desc
select [语句执行花费时间(毫秒)]=datediff(ms,@d,getdate()) 
go