Selecting rows from one table using values gotten from another table MYSQL

Question

I have currently have 2 mysql tables in my db

Film and Film_Ratings_Report

The primary key for Film is filmid which is u

Answer 1

Preferred solution for this is to use join, and don't forget group by so that you don't have duplicate lines:

select film.*
from film
join film_rating_report on film.filmid = film_rating_report.filmid
        and rating = 'GE'
group by film.filmid

EDIT: as correctly noted by @ypercube, I was wrong claiming that the performance of join & group by is better than using subqueries with exists or in - quite the opposite.