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

Population Census

  • marinskiy
     + 4 comments

    Here is Oracle solution from my HackerrankPractice repository:

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

    Feel free to ask if you have any questions :)