๐Ÿ“Œ[SQL ๋ฌธ์ œ ํ’€์ด] HackerRank - Asian Population

๋ชจ๊น…ยท2023๋…„ 11์›” 9์ผ
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SELECT SUM(city.population)
FROM city
     INNER JOIN country on city.countrycode = country.code
WHERE continent = 'Asia'
;
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