Hacker Rank SQL

Weather Observation Station 19 Solution

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Also Visit:ย  Weather Observation Station 18 Solution


 

Problem

Considerย P1(a, c)ย andย P2(b, d)ย to be two points on a 2D plane whereย (a, b)ย are the respective minimum and maximum values ofย Northern Latitudeย (LAT_N) andย (c, d)ย are the respective minimum and maximum values ofย Western Longitudeย (LONG_W) inย STATION.

Query theย Euclidean Distanceย between pointsย P1ย andย P2ย andย format your answerย to displayย 4ย decimal digits.

Input Format

Theย STATIONย table is described as follows:

Field Type
ID NUMBER
CITY VARCHAR2(21)
STATE VARCHAR2(2)
LAT_N NUMBER
Long_W NUMBER

whereย LAT_Nย is the northern latitude andย LONG_Wย is the western longitude.

 

Solution โ€“ Weather Observation Station 19

MySQL Code
SELECT ROUND(SQRT(POWER(MAX(LAT_N)-MIN(LAT_N),2)
+POWER(MAX(LONG_W)-MIN(LONG_W),2)),4) FROM STATION;

 


Weather observations

Basic weather observation instruments include thermometers, rain gauges, barometers, and anemometers (wind speed meters).

What are the four types of weather observations?

There are four types of weather observations: surface, upper air, radar, and satellite.

What is weather observation stations?

A weather station is a facility, either on land or sea, with instruments and equipment for measuring atmospheric conditions to provide information for weather forecasts and to study the weather and climate.

 

 

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