MySQL Query to find customers who have ordered two specific products

Question

I\'m having trouble coming up with a query that will find all customers who have purchased both PROD1 and PROD2.

Here\'s a pseudo-query that kind of looks like what

Answer 1

Example for sakila db:

SELECT R.customer_id, GROUP_CONCAT(I.film_id) 
FROM sakila.rental R 
RIGHT OUTER JOIN sakila.inventory I ON R.inventory_id = I.inventory_id 
WHERE I.film_id IN (22,44) GROUP BY R.customer_id HAVING COUNT(*) = 2