CREATE TABLE Order (
    id int
    ...
)
CREATE TABLE Product (
    id int,
    name text
)
CREATE TABLE OrderProduct (
    OrderId int,
    ProductId int
)
	
Order| Product
1|Burger
1|Drink
1|Fries
2|Burger
2|Drink
3|Burger
4|Burger
5|Burger
5|Drink
5|Fries
	
Queried order| Returned Orders
1|1,5
2|2
3|3,4
4|3,4
5|1,5