Anusha Murali
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15. Average Population of Each Continent: Solution
Given the CITY and COUNTRY tables, query the names of all the continents (COUNTRY.Continent) and their respective average city populations (CITY.Population) rounded down to the nearest integer.
Note: CITY.CountryCode and COUNTRY.Code are matching key columns.
The CITY and COUNTRY tables are described as follows:
SELECT COUNTRY.CONTINENT , FLOOR(AVG(CITY.POPULATION))
FROM CITY, COUNTRY
WHERE CITY.COUNTRYCODE = COUNTRY.CODE GROUP BY COUNTRY.CONTINENT;