[HackerRank SQL] Weather Observation Station 20

문제 link
https://www.hackerrank.com/challenges/weather-observation-station-20/problem

Code link
https://github.com/JamesJung01/Hackerrank_sql/blob/main/02_Medium/Weather_Observation_Station_20.sql

SELECT ROUND(s.LAT_N,4) AS median
FROM STATION AS s
WHERE (SELECT COUNT(LAT_N)
       FROM STATION
       WHERE Lat_N < s.LAT_N) = (SELECT COUNT(LAT_N)
                                 FROM STATION
                                 WHERE LAT_N > s.LAT_N)