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 and grouping Advanced Select and joi...
4.DataLemur 【DataLemur】:https://datalemur.com/sql-interview-questions DataLemur有一个精选的SQL面试问题集合,这些问题曾在LinkedIn、特斯拉、微软和沃尔玛等科技公司的面试中出现过。 该平台上有超过40个SQL面试问题,涉及条件聚合、字符串和窗口函数以及累积求和等主题。 5.LeetCode 【LeetCode】:https://leet...
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Leetcode has a huge number of test cases and questions from interviews too like Google, Amazon, Microsoft, Facebook, Adobe, Oracle, Linkedin, Goldman Sachs, etc. LeetCode helps you in getting a job in Top MNCs. To crack FAANG Companies, LeetCode problems can help you in building your log...
/department-highest-salary/description/ 题目描述: 知识点:JOIN子句、IN子句、GROUP BY子句及聚合函数MAX() 思路:用JOIN子句内连接查询两个表,用GROUP子句分组并用聚合函数MAX()获得各个部门的最高工资SQL语句: LeetCode解题报告: MySQL数据库的多表查询连接方式 ...
Learn to answer questions with data to solve challenging problems. Start Now Lesson 1 Using SQL in Mode Learn to use Mode's Query Editor to run SQL queries against data in a relational database. Start Now Lesson 2 SQL SELECT The SQL SELECT statement is used to retrieve data from a data...
create procedure create_student(name varchar(50)) begin insert into students(name) values (name); end; -- 调用存储过程 call create_student('shanyue'); 复制代码 1. 2. 3. 4. 5. 6. 7. 8. 9. SQL 实践 更多练习可以查看 leetcode ...
1.由于board中的整数限定在1到9的范围内，因此可以分别建立数组来存储任一个数在相应维度上是否出现过...
参考leetcode: rank-scores #2. 写一个函数,获取第 N 高的分数 create function getNthHighestScore(N int) return int begin declare M int default N-1; return ( select distinct score from student order by score desc limit M, 1; ) end; ...
Practice Regularly: Solve SQL problems on platforms like LeetCode, HackerRank, or SQLZoo to sharpen your skills. Optimize Queries: Focus on writing efficient queries by using proper indexing and understanding query plans. Know Advanced Concepts: Be prepared to discuss window functions, CTEs, normalizat...