Milky's note

https://www.hackerrank.com/challenges/african-cities/problem?isFullScreen=true&h_r=next-challenge&h_v=zen African Cities | HackerRank Query the names of all cities on the continent 'Africa'. www.hackerrank.com [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 CI..