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

Try this below code,

SELECT DISTINCT CITY
FROM   STATIOn
WHERE  city RLIKE '^[aeiouAEIOU].*.[aeiouAEIOU]$'

Answer 2

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%'
) AND (CITY LIKE '%a' 
    OR CITY LIKE '%e'
    OR CITY LIKE '%i'
    OR CITY LIKE '%o'
    OR CITY LIKE '%u'
)

Answer 3

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

Answer 4

You can try one simple solution for MySQL:

SELECT DISTINCT city FROM station WHERE city REGEXP "^[aeiou].*[aeiou]$";

Answer 5

You may try this

    select city
    from station where SUBSTRING(city,1,1) in ('A','E','I','O','U') and 
    SUBSTRING(city,-1,1) in ('A','E','I','O','U');

Answer 6

Use a regular expression.

WHERE name REGEXP '^[aeiou].*[aeiou]$'

^ and $ anchor the match to the beginning and end of the value.

In my test, this won't use an index on the name column, so it will need to perform a full scan, as would

WHERE name LIKE 'a%a' OR name LIKE 'a%e' ...

I think to make it use an index you'd need to use a union of queries that each test the first letter.

SELECT * FROM table
WHERE name LIKE 'a%' AND name REGEXP '[aeiou]$'
UNION
SELECT * FROM table
WHERE name LIKE 'e%' AND name REGEXP '[aeiou]$'
UNION
SELECT * FROM table
WHERE name LIKE 'i%' AND name REGEXP '[aeiou]$'
UNION
SELECT * FROM table
WHERE name LIKE 'o%' AND name REGEXP '[aeiou]$'
UNION
SELECT * FROM table
WHERE name LIKE 'u%' AND name REGEXP '[aeiou]$'