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Write a SQL query to get the second highest salary from the Employee
table.
+----+--------+ | Id | Salary | +----+--------+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +----+--------+
For example, given the above Employee table, the second highest salary is 200
. If there is no second highest salary, then the query should return null
.
如果值不存在,max()返回NULL
select max(Salary) from Employee where Salary < (select max(Salary) from Employee)
Leetcode 176 Second Highest Salary
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原文地址:http://www.cnblogs.com/lilixu/p/4640647.html