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 is200. If there is no second highest salary, then the query should returnnull. 大意是选出第二高的Salary。 1 2 3 4 # Write your MySQL query statement below selectmax(Salary)fromEmployee where Salary < (selectmax(Salary...
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...
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...
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值。 注意:必须加 DISTINCT, 否则当不止...
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
SELECTe1.SalaryFROMEmployee e1WHERE2=(SelectCount(distinct(e2.Salary))fromEmployee e2wheree2.Salary>=e1.Salary)asSecondHighestSalary; 上面两种方法也可以用于,取任意第N位数据时。 COUNT方法之所以不能使用Order by,是因为Order by是对结果进行排序,而我们需要的是已排序好的结果。
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...