Algorithm


Problem Name: Sql - African Cities

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

In this HackerRank Functions in SQL problem solution,

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 Examples

#1 Code Example with MySQL

Code - MySQL


SELECT CITY.NAME 
FROM CITY, COUNTRY
WHERE CITY.COUNTRYCODE = COUNTRY.CODE AND COUNTRY.CONTINENT = 'Africa';
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Demonstration


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