Well my question is like this:
I have the row balance of a given user from my database table that has €100, and I wanted to add €50, how can I do it without having to create a variable with his current balance, plus a variable with the balance to add, plus a variable with the sum of the two values and then insert it into the database.
Is there a faster way to add values to the database without having to do this process all the time?
The fastest way I know of would be using just one
UPDATE tbl_usuario SET vl_saldo = vl_saldo + 50 WHERE id_usuario = 123;