I have a table where each row is a product sold in a store. A product has two relevant columns, EAN and Store. How do I find all products (that have the same EAN) that appear in all Stores? For example, if Store A has products with EANs 1, 2 and 3, Store B has 2, 3 and 4 and Store C has 2, 3 and 5 (9 rows in total), how can I get all rows where EAN is 2 or 3 (6 rows in total)?
Thanks in advance!