编写一个 SQL 查询,获取Employee表中第二高的薪水(Salary) 。 创建表和数据: droptableEmployee; CreatetableIfNotExistsEmployee (Idint, Salaryint); insertintoEmployee (Id, Salary)values('1','100');insertintoEmployee (Id, Salary)values('2','200');insertintoEmployee (Id, Salary)values('3','30...
For example, given the above Employee table, the second highest salary is200. If there is no second highest salary, then the query should returnnull. 这道题让我们找表中某列第二大的数,这道题有很多种解法,先来看一种使用Limit和Offset两个关键字的解法,MySQL中Limit后面的数字限制了我们返回数据的...
Can you solve this real interview question? Second Highest Salary - Table: Employee +---+---+ | Column Name | Type | +---+---+ | id | int | | salary | int | +---+---+ id is the primary key (column
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. 思路: 子查询 算法: select max(salary) from Employee where salary<(select max(salary) from Employee) 1....
leetcode 176. Second Highest Salary https://leetcode.com/problems/second-highest-salary/description/ 题目要求输出第二大的成绩。 首先可以想到去重,然后排序,相当于输出第二个成绩。 这个用limit a offset b表示,从第b项开始,选出a个,下标从0开始...
Salary GROUP BY a.Id HAVING COUNT(a.Id) = 1) AS SecondHighestSalary; 3.3 Leetcode 答案 SELECT (SELECT DISTINCT Salary FROM Employee ORDER BY Salary DESC LIMIT 1 OFFSET 1) AS SecondHighestSalary; 类似之前我提到的,如果没用子查询,会有一样的问题:当没有薪水第二高的人的时候,返回的不是null...
For example, given the above Employee table, the query should return200as the second highest salary. If there is no second highest salary, then the query should returnnull. +---+ | SecondHighestSalary | +---+ | 200 | +---+</pre> 思路: 这道题让我们...
Can you solve this real interview question? Second Highest Salary - Table: Employee +---+---+ | Column Name | Type | +---+---+ | id | int | | salary | int | +---+---+ id is the primary key (column
https://leetcode.com/problems/second-highest-salary/ 首先MySQL不支持top语法,要用limit代替。 selectSalaryfromEmployeeorderbySalarydesclimit1,1 这样写的话如果不存在,select出来是空,题目需要是null(掀桌。 Input: {"headers": {"Employee":["Id", "Salary"]}, "rows": {"Employee":[[1, 100]]}}...
完成日期:05/22/2019 关键点:MAX, NOT IN # Write your MySQL query statement belowSELECTMax(Salary)AsSecondHighestSalaryFROMEmployeeWHERESalaryNOTIN(SELECTMax(Salary)FROMEmployee); 参考资料:LeetCode Solution LeetCode 题目列表 -LeetCode Questions List...