CODE EXAMPLE FOR SQL

Query the list of CITY names from STATION which have vowels (i.e., a, e, i, o, and u) as both their first and last characters. Your result cannot contain duplicates.

SELECT DISTINCT(CITY) 
    FROM STATION
    WHERE (LOWER(CITY) LIKE 'a%'
    OR LOWER(CITY) LIKE 'e%'
    OR LOWER(CITY) LIKE 'i%'
    OR LOWER(CITY) LIKE 'o%'
    OR LOWER(CITY) LIKE 'u%')
    AND (CITY LIKE '%a'
    OR CITY LIKE '%e'
    OR CITY LIKE '%i'
    OR CITY LIKE '%o'
    OR CITY LIKE '%u')