[HackerRank] Weather Observation Station 11

Query the list of CITY names from STATION that either do not start with vowels or do not end with vowels. Your result cannot contain duplicates.

Input Format

The STATION table is described as follows:

 

 

/*
문자열 함수 활용
*/
SELECT
    DISTINCT city
FROM station
WHERE
    LEFT(city,1) not in ('a', 'e', 'i', 'o', 'u')
    OR RIGHT(city,1) not in ('a', 'e', 'i', 'o', 'u')

/*
정규 표현식 활용
*/
SELECT 
    DISTINCT city
FROM station
WHERE 
    city REGEXP '^[^aeiou]' OR city REGEXP '[^aeiou]$'