Milky's note

https://www.hackerrank.com/challenges/average-population/problem?isFullScreen=true Average Population | HackerRank Query the average population of all cities, rounded down to the nearest integer. www.hackerrank.com [문제] Query the average population for all cities in CITY, rounded down to the nearest integer. Input Format The CITY table is described as follows: [답] -mysql select round(avg(populat..