Hello coders, today we are going to solve Weather Observation Station 15 HackerRank Solution in SQL.
Problem
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.
Input Format
The STATION table is described as follows:
| Field | Type |
|---|---|
| ID | NUMBER |
| CITY | VARCHAR2(21) |
| STATE | VARCHAR2(2) |
| LAT_N | NUMBER |
| Long_W | NUMBER |
where LAT_N is the northern latitude and LONG_W is the western longitude.
Solution – Weather Observation Station 15 in SQL
MySQL
select round(long_w, 4) from station where lat_n = (select max(lat_n) from station where lat_n < 137.2345);
Disclaimer: The above Problem (Weather Observation Station 15) is generated by Hacker Rank but the Solution is Provided by CodingBroz. This tutorial is only for Educational and Learning Purpose.
select substr(round(long_w, 4),1,8) from station
where lat_n = (select max(lat_n)
from station where lat_n < 137.2345);
select substr(round(long_w, 4),1,8) from station
where lat_n = (select max(lat_n)
from station where lat_n < 137.2345);
correct query:
select cast(round(long_w,4) as decimal(10,4)) from station
where lat_n = (select max(lat_n) from station where lat_n < 137.2345);
FOR MS SQL SERVER:
SELECT TOP 1 CONVERT(DECIMAL(15,4),LONG_W) FROM STATION WHERE LAT_N<137.2345 ORDER BY LAT_N DESC