문제 link
https://www.hackerrank.com/challenges/weather-observation-station-18/problem
Code link
https://github.com/JamesJung01/Hackerrank_sql/blob/main/02_Medium/Weather_Observation_Stations18.sql
SELECT ROUND(ABS(MIN(LAT_N)-MAX(LAT_N))+ABS(MIN(LONG_W)-MAX(LONG_W)), 4) FROM STATION;
