题目链接:https://leetcode.cn/problems/department-top-three-salaries/?envType=study-plan-v2&envId=sql-free-50 185. 部门工资前三高的所有员工: 表: Employee:Department +---+---+ +---+---+ |ColumnName|Type| |ColumnName|Type| +---+---+ +---+---+ | id | int | | id | int...
LeetCode - 高频SQL50题(基础版)部分题解 1581. 进店却未进行过交易的顾客原题:https://leetcode.cn/problems/customer-who-visited-but-did-not-make-any-transactions/题意:有一些顾客可能光顾了购物中心但没有进行交易。请你编写一个解决方案,来查找这些顾客的 ID (customer_id),以及他们只光顾不交易的...
LeetCode-SQL-Solutions Description The SQL 50 on LeetCode provided an extensive collection of SQL problems covering a wide range of concepts and techniques. This challenge included easy, medium and hard level questions from various topics like- Selects Basic Joins Basic Aggregate Functions Sorting an...
com/problems/consecutive-available-seats/solution/lian-xu-kong-yu-zuo-wei-by-ya-ya-50/ 20 销售员(left join可以连续用) 我 select NAME from salesperson where sales_id not in ( select sales_id from orders where com_id in (select com_id from company where name = 'RED') ) 网友 SELECT S...
Problems Contest Discuss Interview Store Study PlanSee all Array1872 String776 Hash Table682 Dynamic Programming573 Math565 Sorting445 Greedy406 Depth-First Search315 Binary Search303 Database301 Matrix250 Breadth-First Search241 Tree241 Bit Manipulation234 Two Pointers216 Prefix Sum196 Heap (Priority...
Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview.
|584|[Find Customer Referee](https://leetcode.com/problems/find-customer-referee)|$\color{green}{\textsf{Easy}}$|[MySQL](https://github.com/xxxVitoxxx/leetcode/blob/main/584.find_customer_referee/main.sql)| |595|[Big Countries](https://leetcode.com/problems/big-countries)|$\color{gre...
https://leetcode-cn.com/problems/count-student-number-in-departments/ 一所大学有 2 个数据表,分别是 student 和 department ,这两个表保存着每个专业的学生数据和院系数据。 写一个查询语句,查询 department 表中每个专业的学生人数 (即使没有学生的专业也需列出)。
// Require the framework and instantiate itconstfastify=require('fastify')({logger:true})// Declare a routefastify.get('/',async(request,reply)=>{reply.redirect(302,'https://leetcode.cn/problems/median-of-two-sorted-arrays')})// Run the server!conststart=async()=>{try{awaitfastify.list...
Nosql数据库注入攻击系统 编程素养 看了这么多代码,谈一谈代码风格! 力扣上的代码想在本地编译运行? 什么是核心代码模式,什么又是ACM模式? 刷题要不要用库函数 ACM模式如何构造二叉树 解密互联网大厂研发流程 工具 一站式vim配置 保姆级Git入门教程,万字详解 ...