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;…
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 =…
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…
我们常见的一些主要的数据结构比方整型int或者浮点型float由于位数过多无法用内置类型存储,这时候我们就须要自己实现高精度的数据类型来进行存储和运算.这样的问题在实际产品中还是比較有用的,所以相对来说也是面试中的常客.LeetCode中关于高精度的题目有下面几道:Add BinaryAdd Two NumbersPlus OneMultiply Strings Add Binary和Add Two Numbers是同一类型的题目,都是高精度中的加法运算,仅仅是一个是二进制的,一个是十进制的,事…