LeetCode - Nth Highest Salary 题目大概意思是要求找出第n高的Salary,直接写一个Function。作为一个SQL新手我学到了1.SQL中Function的写法和变量的定义,取值。2.limit查询分 页的方法。 在这个题目中limit n-1, 1是从n-1开始取出一条数据。这样说比较直观。 1 2 3 4 5 6 7 8 9 CREATEFUNCTIONgetNthHi...
编写一个SQL查询语句,获取Employee表中第n高的薪水(Salary)。 创建表和数据 CreatetableIfNotExistsEmployee (Id int, Salaryint);TruncatetableEmployee;insertintoEmployee (Id, Salary)values('1','100');insertintoEmployee (Id, Salary)values('2','200');insertintoEmployee (Id, Salary)values('3','300...
CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INTBEGIN RETURN ( # Write your MySQL query statement below. );END 1. 参考1: CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INTBEGINDECLARE M INT;SET M=N-1; RETURN ( # Write your MySQL query statement below. SELECT DISTINCT Salary FRO...
For example, given the above Employee table, the query should return 200 as the second highest salary. If there is no second highest salary, then the query should return null. +---+ | SecondHighestSalary | +---+ | 200 | +---+ LeetCode Question & Answer 4 Sum Deion: Given an arr...
SELECTMAX(CASEWHENrnk=2THENSalaryELSEnullEND)ASSecondHighestSalaryFROM(SELECTSalary,ROW_NUMBER()OVER(ORDERBYSalaryDESC)ASrnkFROMEmployee)AStmp 将rnk = 2 可以改成任意值。由于本道 Leetcode 题目的目的是练习写 function,因此这种方式在 Leetcode里无法通过,但我认为是没有问题的...
Write a SQL query to get the nth highest salary from the Employee table. IdSalary 1 100 2 200 3 300 For example, given the above Employee table, the nth highest salary where n = 2 is 200. If there is no nth highest salary, then the query should return null. getNthHighestSalary(2...
Write a SQL query to get thenthhighest salary from the Employee table.+---+---+| MySQL SQL 原创 我想有个名字 2023-02-20 08:46:25 69阅读 1 2 3 4 5 相关搜索全部 css nthcss nth childcss选择nthiptables nthjquery not nthjquery nthjquery中nthnth rosnth_elementopencv中nth_element函数的...
That's all about how to solve the Nth highest salary problem in MySQL and SQL Server. It's a good problem to learn co-related subquery, one of the tricky SQL concepts which many programmers struggle to understand. LeetCode also has a good collection of SQL problems which are good to imp...
其实Leetcode 上还有一道选第第二大元素的题目,不过和这道题实质上一毛一样,所以就只记录这一个题目了。 选第N大的元素思路已经很明朗了,由于 sql 内置的函数不存在选第N大元素的函数,所以我们只能另辟蹊径了,就根据Salary排序排序,然后用offset选排序后的第N个元素,最后用LIMIT限制选择一个元素,就是第N大的...
| getNthHighestSalary(2) | +---+ | 200 | +---+ LeetCode Question Combinations Deion: Given two integers n and k, return all possible combinations of k numbers out of 1 … n. Input: n = 4 and k = 2 Output: [[2,4],[3,4],[2,3...