--題目:Employee表中有ID,Name,Salary三列,求薪資排序第二高的Employee的Name

select *  FROM [Employee]

--等於2時為空,因為有並列第一
SELECT name from (select Name, RANK() over (order by salary desc) as rankIndex
FROM [Test].[dbo].[Employee]) as temp
where temp.rankIndex=2

-- 先找出前兩高,然後找出第二高
select name from Employee where Salary=(
   select top 1 salary from 
  (select distinct top 2  salary from Employee order by Salary desc) as temp1  
  order by Salary)

-- 藉助Max函式,先找出最大,然後在在排除最大的資料量找最大
select  Name from [Employee]  where Salary =(
select MAX(Salary) from [Employee]  where Salary not in (select MAX(Salary) from [Employee]))

--先找出前兩高,然後藉助min函式找出最小值,即為第二高
select  Name from [Employee]  where Salary =(
select min(Salary) from (select distinct top 2  salary from Employee order by Salary desc) as temp1 )