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select question_id survey_log from survey_log group by question_id order by sum(if(action="answer",1,0))/sum(if(action="show",1,0)) desc limit 1 作者:baolibin 链接:https://leetcode-cn.com/problems/get-highest-answer-rate-question/solution/mysqlti-jie-by-baolibin-33/ 网友2 # Writ...
SQLAlchemy-1.3.22-cp36-cp36m-win-amd64.whl 2025-03-21 08:27:54 积分:1 SQLAlchemy-1.3.13-cp35-cp35m-win-amd64.whl 2025-03-21 08:25:53 积分:1 scoredb.sql 2025-03-20 23:23:17 积分:1 Java课设,弹幕射击游戏.zip学习资源 2025-03-20 17:25:03 积分:1 数据分析工具...
2、学会自我总结 3、把多出来的时间花在计算机基础上 比如编程语言 比如操作系统的重要知识点 比如计算机...
LeetCode Question & Answer Rank Scores 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" be...
LeetCode Question & Answer Write a query in SQL to obtain the names of all the nurses who have ever been on call for room 122. Table: Nurse Employeeid | name | position | registered | ssn ---+---+---+---+--- Table: On_Call Nurse | blockfloor | blockcode | oncallstart | ...
写一段 SQL 语句查出 2013年10月1日 至2013年10月3日 期间非禁止用户的取消率。基于上表,你的 SQL 语句应返回如下结果,取消率(Cancellation Rate)保留两位小数。 取消率的计算方式如下:(被司机或乘客取消的非禁止用户生成的订单数量) / (非禁止用户生成的订单总数) sql 代码语言:javascript 代码运行次数:0 运...
并特别针对排序、搜索、图处理和字符串处理进行了论述第 4 版具体给出了每位程序员应知应会的 50 个...
Only one valid answer exists. Follow-up: Can you come up with an algorithm that is less than O(n2) time complexity? 你可以想出一个时间复杂度小于O(n2)的算法吗? 方法一:枚举 思路及算法 设数组元素值为x,那么根据结果target值即得到target - x。遍历数组寻找target - x时,需注意每次循环位于x之...
BA Interview Question & Answer Duplicate Emails Write a SQL query to find all duplicate emails in a table named Person. +---+---+ | Id | Email | +---+---+ | 1 | a@b.com | | 2 | c@d.com | | 3 | a@b.com |