MySQL Search Query on two different fields

Question

I need to search on two fields using LIKE function and should match also in reverse order. My table uses InnoDB which dont have Full text search.

Consider the following

Answer 1

When you CONCAT() two columns the LIKE become case sensitive. So this should find you results but isn't optimal for performance:

SELECT CONCAT(first_name, ' ', last_name) AS fullname FROM users 
WHERE LOWER(CONCAT(first_name, ' ', last_name)) LIKE LOWER('%doe%');

That's getting MySQL to do work on each row though.