[HackerRank/SQL] Aggregation - Weather Observation Station 15

Problem. Basic Select - Weather Observation Station 15

---

Link.

https://www.hackerrank.com/challenges/weather-observation-station-15/problem?isFullScreen=true 

Weather Observation Station 15 | HackerRank

---

Description.

Query the Western Longitude (LONG_W) for the largest Northern Latitude (LAT_N) in STATION that is less than 137.2345. 

Round your answer to 4 decimal places.

 

STATION 테이블

---

Key Point. 

ROUND,

 

MAX,

---

My Answer. 

SELECT
ROUND(LONG_W, 4)
FROM STATION
WHERE LAT_N = (SELECT MAX(LAT_N) FROM STATION WHERE LAT_N < 137.2345);

---

References.