SQL query to check if a name begins and ends with a vowel

Question

I want to query the list of CITY names from the table STATION(id, city, longitude, latitude) which have vowels as both their first and last charact

Answer 1

You could substring the first and last character and compare it with IN keyword,

WHERE SUBSTRING(NAME,1,1) IN (a,e,i,o,u) AND SUBSTRING(NAME,-1) IN (a,e,i,o,u) 

Answer 2

you can also do a hard code like this, where you are checking each and every case possible, it's easy to understand for beginners

SELECT DISTINCT CITY 
FROM STATION
WHERE CITY LIKE 'A%A' OR CITY LIKE 'E%E' OR CITY LIKE 'I%I' OR CITY LIKE 'O%O' OR
CITY LIKE 'U%U' OR CITY LIKE 'A%E' OR CITY LIKE 'A%I' OR CITY LIKE 'A%O' OR 
CITY LIKE 'A%U' OR CITY LIKE 'E%A' OR CITY LIKE 'E%I' OR CITY LIKE 'E%O' OR 
CITY LIKE 'E%U' OR CITY LIKE 'I%A' OR CITY LIKE 'I%E' OR CITY LIKE 'I%O' OR 
CITY LIKE 'I%U' OR CITY LIKE 'O%A' OR CITY LIKE 'O%E' OR CITY LIKE 'O%I' OR 
CITY LIKE 'O%U' OR CITY LIKE 'U%A' OR CITY LIKE 'U%E' OR CITY LIKE 'U%I' OR 
CITY LIKE 'U%O'

Answer 3

For oracle :

SELECT DISTINCT city
FROM   station
WHERE REGEXP_LIKE(city, '^[aeiou].*[aeiou]$','i') ;

Answer 4

in Microsoft SQL server you can achieve this from below query:

SELECT distinct City FROM STATION WHERE City LIKE '[AEIOU]%[AEIOU]'

Or

SELECT distinct City FROM STATION WHERE City LIKE '[A,E,I,O,U]%[A,E,I,O,U]'

Update --Added Oracle Query

--Way 1 --It should work in all Oracle versions

SELECT DISTINCT CITY FROM STATION WHERE REGEXP_LIKE(LOWER(CITY), '^[aeiou]') and  REGEXP_LIKE(LOWER(CITY), '[aeiou]$');

--Way 2 --it may fail in some versions of Oracle

SELECT DISTINCT CITY FROM STATION WHERE REGEXP_LIKE(LOWER(CITY), '^[aeiou].*[aeiou]');

--Way 3 --it may fail in some versions of Oracle

SELECT DISTINCT CITY FROM STATION WHERE REGEXP_LIKE(CITY, '^[aeiou].*[aeiou]', 'i');

Answer 5

The below one worked for me in MySQL:

SELECT DISTINCT CITY FROM STATION WHERE SUBSTR(CITY,1,1) IN ('A','E','I','O','U') AND SUBSTR(CITY,-1,1) in ('A','E','I','O','U');

Answer 6

Both of the statements below work in Microsoft SQL SERVER

SELECT DISTINCT
    city
FROM
    station
WHERE
    SUBSTRING(lower(CITY), 1, 1) IN ('a', 'e', 'i', 'o', 'u')
    AND SUBSTRING(lower(CITY), LEN(CITY), 1) IN ('a', 'e', 'i', 'o', 'u');

SELECT DISTINCT
    City
FROM
    Station
WHERE
    City LIKE '[A, E, O, U, I]%[A, E, O, U, I]'
ORDER BY
    City;