HR-SQL Asian Population

1 개요

HR-SQL Asian Population

• https://www.hackerrank.com/challenges/asian-population/problem

해커랭크 SQL

문제	DB2	MS SQL	MySQL	Oracle
HR-SQL Basic Join e
HR-SQL Asian Population
HR-SQL African Cities
HR-SQL Average Population of Each Continent
HR-SQL The Report
HR-SQL Top Competitors
HR-SQL Ollivander's Inventory
HR-SQL Challenges
HR-SQL Contest Leaderboard

2 MySQL

SELECT SUM(CI.POPULATION) FROM CITY AS CI, COUNTRY AS CO
WHERE CO.CODE = CI.COUNTRYCODE
AND CO.CONTINENT = 'Asia';