SQL语句执行效率及性能测试

SET STATISTICS PROFILE ON 
SET STATISTICS IO ON 
SET STATISTICS TIME ON 
GO /*--你的SQL脚本开始*/
SELECT * FROM tablename 
GO /*--你的SQL脚本结束*/
SET STATISTICS PROFILE OFF 
SET STATISTICS IO OFF 
SET STATISTICS TIME OFF

declare @d datetime
set @d=getdate()
/*你的SQL脚本开始*/
SELECT [TestCase] FROM [TestCaseSelect] 
/*你的SQL脚本结束*/
select [语句执行花费时间(毫秒)]=datediff(ms,@d,getdate())