I am so far learnt a little bit about SQL and also gonna learn more in PHP)
PHP is like chocolate, and SQL is peanut butter. By that I mean, SQL relies on some sort of server side language(aka PHP).
SQL is very easy imho, once you know how to do CRUD(create,read,update,delete) your good to go for a long time. This will not be too difficult to learn but should be learned after or while learning PHP.
Anyways it sounds like your going to have no trouble becoming a programmer, best of luck.