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  1. Prepare
  2. SQL
  3. Basic Join
  4. Population Census
  5. Discussions

Population Census

  • RodneyShag
     + 22 comments

    MySQL solution

    From my HackerRank solutions.

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

    Let me know if you have any questions.