CodingSpace

Problem. Aggregation - Japan Population Link. https://www.hackerrank.com/challenges/japan-population/problem?utm_campaign=challenge-recommendation&utm_medium=email&utm_source=24-hour-campaign Japan Population | HackerRank Query to the sum of the populations of all Japanese cities in CITY. www.hackerrank.com Description. Query the sum of the populations for all Japanese cities in CITY. Key Point...