[SQL][HackerRank] Weather Observation Station 20

https://www.hackerrank.com/challenges/weather-observation-station-20/problem?h_r=next-challenge&h_v=zen&h_r=next-challenge&h_v=zen&h_r=next-challenge&h_v=zen&h_r=next-challenge&h_v=zen

Weather Observation Station 20 | HackerRank

A median is defined as a number separating the higher half of a data set from the lower half. Query the median of the Northern Latitudes (LAT_N) from STATION and round your answer to 4 decimal places.

Input Format

The STATION table is described as follows:

where LAT_N is the northern latitude and LONG_W is the western longitude.

Oracle
SELECT ROUND(MEDIAN(LAT_N),4) FROM STATION;

 

MySQL
SELECT ROUND(LAT_N,4) 
FROM STATION AS S
WHERE (SELECT COUNT(*) FROM STATION WHERE LAT_N<S.LAT_N) =(SELECT COUNT(*) FROM STATION WHERE LAT_N>S.LAT_N);