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Weather Observation Station 4 URL : https://www.hackerrank.com/challenges/weather-observation-station-4/problem Find the difference between the total number of CITY entries in the table and t...

Weather Observation Station 3 URL : https://www.hackerrank.com/challenges/weather-observation-station-3/problem Query a list of CITY names from STATION for cities that have an even ID number....

Weather Observation Station 2 URL : https://www.hackerrank.com/challenges/weather-observation-station-2/problem Query the following two values from the STATION table: The sum of all values ...

Weather Observation Station 17 URL : https://www.hackerrank.com/challenges/weather-observation-station-17/problem Query the Western Longitude (LONG_W)where the smallest Northern Latitude (LAT...

Weather Observation Station 16 URL : https://www.hackerrank.com/challenges/weather-observation-station-16/problem Query the smallest Northern Latitude (LAT_N) from STATION that is greater tha...

Weather Observation Station 15 URL : https://www.hackerrank.com/challenges/weather-observation-station-15/problem Query the Western Longitude (LONG_W) for the largest Northern Latitude (LAT_N...

Weather Observation Station 14 URL : https://www.hackerrank.com/challenges/weather-observation-station-14/problem Query the greatest value of the Northern Latitudes (LAT_N) from STATION that ...

Weather Observation Station 13 URL : https://www.hackerrank.com/challenges/weather-observation-station-13/problem Query the sum of Northern Latitudes (LAT_N) from STATION having values greate...

Weather Observation Station 12 URL : https://www.hackerrank.com/challenges/weather-observation-station-12/problem Query the list of CITY names from STATION that do not start with vowels and d...

Weather Observation Station 11 URL : https://www.hackerrank.com/challenges/weather-observation-station-11/problem Query the list of CITY names from STATION that either do not start with vowel...