627. Swap Salary SQL Schema Given a table salary, such as the one below, that has m=male and f=female values. Swap all f and m values (i.e., change all f values to m and vice versa) with a single update query and no intermediate temp table. For examp…

Given a table salary, such as the one below, that has m=male and f=female values. Swap all f and m values (i.e., change all f values to m and vice versa) with a single update query and no intermediate temp table. For example: | id | name | sex | sala…

https://leetcode.com/problems/swap-salary/description/ 用  set keyWord = Case depentedWord when haha then baba else lala end 最后需要end # Write your MySQL query statement below update salary set sex = case sex when 'm' then 'f' else 'm' end;…

题目标签: 题目给了我们一个 工资表格,让我们把 男女性别对换. 这里可以利用IF, IF(condition, value_if_true, value_if_false). Java Solution: Runtime:  135 ms, faster than 94.04% Memory Usage: N/A 完成日期:07/02/2019 关键点:IF(condition, value_if_true, value_if_false) # Write your MySQL query s…

SQL架构 create table ), sex ), salary int) Truncate table salary insert into salary (id, name, sex, salary) values (') insert into salary (id, name, sex, salary) values (') insert into salary (id, name, sex, salary) values (') insert into salary (id, n…

Given a table salary, such as the one below, that has m=male and f=female values. Swap all f and m values (i.e., change all f values to m and vice versa) with a single update query and no intermediate temp table. For example: | id | name | sex | sala…

问题描述 给出下面的表,名为salary. id name sex salary 1 A m 2500 2 B f 1500 3 C m 5500 4 D f 500 要求执行一个UPDATE语句,将表转换成下面的样子. id name sex salary 1 A f 2500 2 B m 1500 3 C f 5500 4 D m 500 即m与f交换位置. 问题解决 下面我使用SQL中的case when来解决问题. #简单case函数写法 update salary set sex =…

2017/11/3 Leetcode 日记 654. Maximum Binary Tree Given an integer array with no duplicates. A maximum tree building on this array is defined as follow: The root is the maximum number in the array.(根节点是数组中的最大值) The left subtree is the maximum tree const…

All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems classified by company 题目按公司分类(Last updated: October 2, 2017) .   Top Interview Questions # Title Difficulty Acceptance 1 Two Sum Medium 17.70% 2 Add Two N…

595. Big Countries https://leetcode.com/problems/big-countries/description/ Description name continent area population gdp Afghanistan Asia 652230 25500100 20343000 Albania Europe 28748 2831741 12960000 Algeria Africa 2381741 37100000 188681000 Andor…