[SQL][HackerRank] Weather Observation Station 11

https://www.hackerrank.com/challenges/weather-observation-station-11/problem?h_r=next-challenge&h_v=zen&h_r=next-challenge&h_v=zen

Weather Observation Station 11 | HackerRank

• query CITY names ==> SELECT CITY
• from STATION table ==> FROM STATION
• do not start or end with vowels ==> WHERE CITY REGEXP ‘^[^aeiou]|[^aeiou]$’
• do not contain duplicates ==> SELECT DISTINCT CITY

select distinct city
from station
where city regexp '^[^aeiou]|[^aeiou]$';