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

Average Population of Each Continent

  • ljvmg11
     + 0 comments
    select 
	cn.continent,
	floor(avg(ci.population))
from country cn
join city ci
on ci.countrycode = cn.code
group by cn.continent;