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  1. Prepare
  2. SQL
  3. Basic Join
  4. Average Population of Each Continent
  5. Discussions

Average Population of Each Continent

  • marinskiy
     + 11 comments

    Here is Oracle solution from my HackerrankPractice repository:

    SELECT COUNTRY.CONTINENT, FLOOR(AVG(CITY.POPULATION))
FROM CITY
JOIN COUNTRY ON CITY.COUNTRYCODE = COUNTRY.CODE
GROUP BY COUNTRY.CONTINENT;

    Feel free to ask if you have any questions :)