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

Average Population of Each Continent

  • Teerathep_ng
     + 0 comments
    SELECT co.continent, FLOOR(AVG(ci.population))
FROM country co
JOIN city ci ON co.code = ci.countrycode
GROUP BY co.continent;