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SELECT B.CONTINENT,FLOOR(AVG(A.POPULATION)) AS PROMEDIO FROM CITY A
INNER JOIN COUNTRY B
ON A.COUNTRYCODE = B.CODE
GROUP BY B.CONTINENT
ORDER BY PROMEDIO DESC;
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Average Population of Each Continent
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SELECT B.CONTINENT,FLOOR(AVG(A.POPULATION)) AS PROMEDIO FROM CITY A INNER JOIN COUNTRY B ON A.COUNTRYCODE = B.CODE GROUP BY B.CONTINENT ORDER BY PROMEDIO DESC;