Suppose I have a customer_order table where customer's order details are stored, e.g., Customer I ordered Product A, B, C on day 1, and Customer II ordered Product B, C, F, G on day 2, and so on. I could not figure out an "easy" way which a single query can be designed so I know which customers ordered Product B and C at the same time, other than doing it awkardly by: SELECT DISTINCT customer_order.CustomerID, customer_order.Product, customer_order_1.Product FROM customer_order INNER JOIN customer_order AS customer_order_1 ON customer_order.Product = customer_order.Product WHERE (((customer_order.Product)="B") AND ((customer_order_1.Product)="C")); What if I need to know the customers who ordered seven products with a single order? I hate to design a query where the table is linked 7 times! Surely there is a simpler way? Appreciate any help. Thanks. Please email to email@example.com.