We could have the following 2 pairs of id that satisfy the requirements: As a result, the number 4 would appear twice. Consequently, DISTINCT is necessary. Question 2:Department Highest Salary Source: Leetcode
如果从HackerRank首页进入，先点击Sign up and practice按钮，注册或登录 再在Prepare页面找到Prepare By T...
Leetcode SQL: Second Highest Salary Write a SQL query to get the second highest salary from the Employee table. +—-+——–+ | Id | Salary | +—-+——–+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +—-+——–+ For example, given the above Employee table, the second highest...
5. LeetCode If you are a Leetcode user, you can practice SQL on it too. Thecollection of SQL questionson LeetCode is quite diverse, with varying difficulty levels and topics. You can also filter questions by the tag: the tags correspond to the names of the companies. However, you can ...
TestDome — This is yet another good platform for interview practice. For practicing your general coding skills, there are many great, modern platforms such as Leetcode but SQL is a skill which tends to get less appreciation — mostly because it's not super sexy, or accessible. So, use SQL...
left join question_practice_detail b on a.device_id=b.device_id where university="复旦大学" group by device_id 1. 2. 3. 4. 5. 6. 7. 8. ⑥ 数学 # 四舍五入 Round(number,2) 1. 2. ⑦ 窗口函数 在mysql8.0中有相关的内置函数,而且考虑了各种排名问题: ...
Mastering the questions in each level on LeetCode is a good way to prepare for technical interviews and keep your skills sharp. They also have a repository of solutions with the reasoning behind each step. LeetCode has over 1,900 questions for you to practice, covering many different ...
让ChatGPT辅导写Leetcode 直接开始! i don't have SQL on my computer, can you act as mysql 首先我问了ChatGPT它可不可以act as SQL server。它说不行。但是后面测试的时候,只要在对话框里打SQL syntax,它就可以理解啦。所以不用担心! what are the most basic sql i should know about ...
题目链接:https://www.nowcoder.com/practice/2364ff2463984f09904170cf6f67f69a?tpId=40&tqId=21367&tPage=2&rp=1&ru=%2Fta%2Fkaoyan&qru=%2Fta%2Fkaoyan%2Fquestion-ranking 题目描述中位数定义:一组数据按从小 算法 原创 心流灬灬 2021-07-15 10:47:07 ...
LeetCodePractice programming online A better approach might be to actually write some DevOps related scripts or projects. Start simple. Here are some ideas: Write a script that gets a number of instances and a name of a platform (AWS, local, Azure, ...) as parameters and provisions those...