[SQL][HackerRank] Weather Observation Station 2

https://www.hackerrank.com/challenges/weather-observation-station-2/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 2 | HackerRank

Query the following two values from the STATION table:

1. The sum of all values in LAT_N rounded to a scale of 2 decimal places.
2. The sum of all values in LONG_W rounded to a scale of 2 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.

Output Format

Your results must be in the form:

lat lon

 

where lat is the sum of all values in LAT_N and lon is the sum of all values in LONG_W. Both results must be rounded to a scale of 2 decimal places.

 

• sum of values in LAT_N ==> SUM(LAT_N)
• round sum of LAT_N to scale of 2 decimal places ==>
  SELECT ROUND(SUM(LAT_N), 2)
• sum of values in LONG_W ==> SUM(LONG_W)
• round sum of LONG_W to a scale of 2 decimal places ==>
  ROUND(SUM(LONG_W), 2)
• from STATION table ==> FROM STATION

SELECT ROUND(SUM(LAT_N),2), ROUND(SUM(LONG_W),2)
FROM STATION