Weather Observation Station 9 Hackerrank Soluion SQL | Hackerrank SQL May 20, 2021 Weather Observation Station 9 Hackerrank Soluion SQL For Explanation Watch Video:: Code: select distinct city from station where not(city like 'A%' or city like 'E%' or city like 'I%' or city like 'O%' or city like 'U%'); Read more