6.LEETCODE（⭐⭐⭐）https://leetcode-cn.com/problemset/database/ LEETCODE上面有很多算法类...
leetcode: sql practice 197. 上升的温度:dateDiff https://leetcode-cn.com/problems/rising-temperature/ SQL架构 给定一个 Weather 表,编写一个 SQL 查询,来查找与之前(昨天的)日期相比温度更高的所有日期的 Id。 例如,根据上述给定的 Weather 表格,返回如下 Id: 思路: 关系:日期相邻,且后面的温度大于前天...
SQL Practice - July 3,18 One day off for yesterday because of overtime work. Again, two questions for today. Question 1:Consecutive Numbers Source: Leetcode Write a SQL query to find all numbers that appear at least three times consecutively. For example, given the above Logs table, 1 is...
Leetcode - Shortest Word Distance Given a list of words and two words word1 and word2, return the shortest distance between these two words in the list. For example, Assume that words = ["practice", "makes", "...leetcode 821:Shortest Distance to a Character Python https://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 access only ...
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 ...
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...
使用SQLZoo进行练习,测试和提高技能,将SQL提升到一个新的水平。 PS。 如果您发现任何重大问题或找到了更好的解决方案,请告诉我-快乐的SQLing! (本文翻译自Jye SR的文章《SQLZoo: The Best Way to Practice SQL》,参考:https://towardsdatascience.com/sqlzoo-the-best-way-to-practice-sql-66b7ccb1f17a)...
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. Use SQLZoo to practice, test and improve your skills to bring your SQL to the next level. ...
隶属于数据库practice下的表T; 2.1 使用SELECT语句进行查询 2.1.1...2.6 嵌套查询 在SQL语言中,将一个查询语句嵌套在另一个查询语句中的查询称作嵌套查询,又称子查询,SQL语言允许许多层嵌套查询,即一个子查询中还可以嵌套更多层子查询。...在Microsoft SQL Server 2012 中,两个查询语句之间也可以进行集合...