Write a SQL query to rank scores. If there is a tie between two scores, both should have the same ranking. Note that after a tie, the next ranking number should be the next consecutive integer value. In other words, there should be no "holes" between ranks. For example, given the ab...
course_id) as course_id, grade FROM (SELECT student_id, course_id, grade, RANK() OVER (PARTITION BY student_id ORDER BY grade DESC) as ranking FROM enrollments) AS t WHERE ranking = 1 GROUP BY student_id,grade 作者:qing-chen-xiang-wan-gui 链接:https://leetcode-cn.com/problems/high...
如果有 country-code 的话,country-code 前面的 ‘+’ 和后面的 ‘-’ 需要保留。 Example1: Input:"LeetCode@LeetCode.com"Output:"l***e@leetcode.com"Explanation: All names are converted to lowercase, and the letters between the first and last letter of the first nameisreplaced by5asterisks....
三种解题方法: -- 方法一:用窗口函数解决 -- 给薪水排序,接着查询序列号排名第二的薪水 SELECT t.salary as getNthHighestSalary FROM (SELECT id, salary, RANK () OVER (ORDER BY salary DESC) as ranking FROM employee) as t WHERE t.ranking = 2 -- 用limit offset -- 此处考虑如果没有排名第二...
CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT BEGIN RETURN ( SELECT IFNULL( (select salary from( select salary, rank() over(order by salary desc) rk from Employee group by salary )t1 where rk=N),NULL) SecondHighestSalary ); END 178. 分数排名 难度中等 SQL架构 编写一个 SQL 查询...
by Techno-RJCombine Two Tables LeetCode Solution | LeetCode Problems For Beginners | LeetCode Problems & Solutions | Improve Problem Solving Skills | LeetCode Problems Java | LeetCode Solutions in SQL Hello Programmers/Coders, Today we are going to share solutions to the Programming problems of ...
看了一个思路只能说牛逼,如下图,重点就在id - row_number() over (order by id) as rankingfrom Stadiumwhere people>=100 # 提前用with临时空间withtmpas(select*,id-row_number()over(orderbyid)asrankingfromStadiumwherepeople>=100)selectid,visit_date,peoplefromtmpwhererankingin(selectrankingfromtmpgr...