[해커랭크/SQL] 25. Average Population

👉 https://www.hackerrank.com/challenges/average-population/problem?isFullScreen=true

Average Population | HackerRank

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🤔 문제 분석

1) Query the average population for all cities in CITY, rounded down to the nearest integer.

 

💡 풀이

SELECT ROUND(AVG(POPULATION), 0)
FROM CITY