From 364823e5638a0bf7e766f01e5d9f769908918dfa Mon Sep 17 00:00:00 2001 From: haibarawu Date: Thu, 4 Jun 2020 16:16:48 -0700 Subject: [PATCH] Update 0627.(Easy) Swap Salary.sql --- Database/0627.(Easy) Swap Salary.sql | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Database/0627.(Easy) Swap Salary.sql b/Database/0627.(Easy) Swap Salary.sql index 1e81a4d..4891c63 100644 --- a/Database/0627.(Easy) Swap Salary.sql +++ b/Database/0627.(Easy) Swap Salary.sql @@ -1,14 +1,26 @@ /**************************************************************************************************** 627. Swap Salary +627. 交换工资 Difficulty: Easy https://leetcode.com/problems/swap-salary/ https://leetcode.com/articles/swap-salary/ +SQL Schema: +create table if not exists salary(id int, name varchar(100), sex char(1), salary int) +Truncate table salary +insert into salary (id, name, sex, salary) values ('1', 'A', 'm', '2500') +insert into salary (id, name, sex, salary) values ('2', 'B', 'f', '1500') +insert into salary (id, name, sex, salary) values ('3', 'C', 'm', '5500') +insert into salary (id, name, sex, salary) values ('4', 'D', 'f', '500') + 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 statement and no intermediate temp table. Note that you must write a single update statement, DO NOT write any select statement for this problem. +给定一个 salary 表，如下所示，有 m = 男性 和 f = 女性 的值。 +交换所有的 f 和 m 值（例如，将所有 f 值更改为 m，反之亦然）。要求只使用一个更新（Update）语句，并且没有中间的临时表。 +注意，您必只能写一个 Update 语句，请不要编写任何 Select 语句。 Example: | id | name | sex | salary | @@ -34,6 +46,9 @@ UPDATE salary SET sex = IIF(sex = 'm', 'f', 'm') +/****************************************************************************************************/ + + --Method2: UPDATE salary SET sex =