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why only "city.population".we have to calculate sum of population of both the tables.Why query "select sum(city.population,country.population) from city join country where CITY.CountryCode = COUNTRY.Code and continent='asia';" not working.Can you please explain.
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Population Census
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why only "city.population".we have to calculate sum of population of both the tables.Why query "select sum(city.population,country.population) from city join country where CITY.CountryCode = COUNTRY.Code and continent='asia';" not working.Can you please explain.