本文记录个人刷题记录 推荐两个刷题网站: 地址:https://leetcode.com/ 另外一个地址:http://www.lintcode.com/ 1.Write a SQL query to get the second highest salary from the Employee table. 题目地址:https://leetcode.com/problems/second-highest-salary/ +----+--------+ | Id | Salary | +---