task: #627

Author: Ivanbyone

README.md

@@ -48,6 +48,7 @@ Have a good contributing!
     - [610. Triangle Judgement](./leetcode/easy/610.%20Triangle%20Judgement.sql)
     - [619. Biggest Single Number](./leetcode/easy/619.%20Biggest%20Single%20Number.sql)
     - [620. Not Boring Movies](./leetcode/easy/620.%20Not%20Boring%20Movies.sql)
+    - [627. Swap Salary](./leetcode/easy/627.%20Swap%20Salary.sql)
     - [1068. Product Sales Analysis I](./leetcode/easy/1068.%20Product%20Sales%20Analysis%20I.sql)
     - [1075. Project Employees I](./leetcode/easy/1075.%20Project%20Employees%20I.sql)
     - [1327. List the Products Ordered in a Period](./leetcode/easy/1327.%20List%20the%20Products%20Ordered%20in%20a%20Period.sql)

leetcode/easy/627. Swap Salary.sql

@@ -0,0 +1,30 @@
+/*
+Question 627. Swap Salary
+Link: https://leetcode.com/problems/swap-salary/description/
+
+Table: Salary
+
++-------------+----------+
+| Column Name | Type     |
++-------------+----------+
+| id          | int      |
+| name        | varchar  |
+| sex         | ENUM     |
+| salary      | int      |
++-------------+----------+
+id is the primary key (column with unique values) for this table.
+The sex column is ENUM (category) value of type ('m', 'f').
+The table contains information about an employee.
+ 
+
+Write a solution to 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 temporary tables.
+
+Note that you must write a single update statement, do not write any select statement for this problem.
+*/
+
+UPDATE Salary
+SET sex = (CASE 
+    WHEN sex = 'm' 
+        THEN 'f' 
+    ELSE 'm' 
+END)