How to retrieve the last 4 characters from a mysql database field?

Question

In order to be able to simulate substr from PHP and mysql, I want to do something like

select * from table where last_four_chars(field) = '.png' 

Answer 1

The docs have an example directly relevant to this.

select * from table where SUBSTRING(field, -4) = '.png' 

Answer 2

With RIGHT function :

SELECT RIGHT('abcdefg', 3); -- efg 

You can achieve the same result with SUBSTRING :

SELECT SUBSTRING('abcdefg', -3); -- efg