SQL

Query the list of CITY names ending with vowels (a, e, i, o, u) from STATION. Your result cannot contain duplicates. Input Format The STATION table is described as follows:

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

Query the list of CITY names starting with vowels (i.e., a, e, i, o, or u) from STATION. Your result cannot contain duplicates.

SELECT DISTINCT CITY
FROM STATION 
WHERE REGEXP_LIKE(CITY, '^[aeiouAEIOU]')
ORDER BY CITY

Query the list of CITY names ending with vowels (a, e, i, o, u) from STATION. Your result cannot contain duplicates.

SELECT DISTINCT city FROM station WHERE city RLIKE '[aeiouAEIOU]$';

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 REGEXP_LIKE(CITY, '^[aeiouAEIOU]')
    AND REGEXP_LIKE(CITY, '[aeiouAEIOU]$');

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')

Query the list of CITY names starting with vowels (i.e., a, e, i, o, or u) from STATION. Your result cannot contain duplicates.

SELECT DISTINCT CITY FROM STATION WHERE CITY REGEXP '^[aeiou]';

Query the list of CITY names starting with vowels (i.e., a, e, i, o, or u) from STATION. Your result cannot contain duplicates.

select distinct city from station where city substr(city,1,1) in ('a','e','i','o','u');

Query the list of CITY names starting with vowels (i.e., a, e, i, o, or u) from STATION. Your result cannot contain duplicates.

SELECT DISTINCT 
CITY 
FROM STATION 
WHERE lower(substr(CITY,1,1)) in ('a','e','i','o','u') ;

Query the list of CITY names starting with vowels (i.e., a, e, i, o, or u) from STATION. Your result cannot contain duplicates.

SELECT DISTINCT city FROM station 
GROUP BY city HAVING LEFT(city, 1) IN ("a", "e", "i", "o", "u");

Query the list of CITY names starting with vowels (i.e., a, e, i, o, or u) from STATION. Your result cannot contain duplicates.

SELECT DISTINCT city FROM station WHERE city RLIKE '^[aeiou]';