[MySQL/HackerRank] African Cities

https://www.hackerrank.com/challenges/african-cities/problem?isFullScreen=true 

African Cities | HackerRank

문제

Given the CITY and COUNTRY tables, query the names of all cities where the CONTINENT is 'Africa'.

Note: CITY.CountryCode and COUNTRY.Code are matching key columns.

Input Format

The CITY and COUNTRY tables are described as follows: 

Code

SELECT CITY.NAME 
FROM CITY
JOIN COUNTRY ON CITY.COUNTRYCODE = COUNTRY.CODE
WHERE COUNTRY.CONTINENT = 'AFRICA'