select cust_email from Orders t2 left join OrderItems t1 on t1.order_num = t2.order_num left join Customers t3 on t2.cust_id = t3.cust_id where prod_id = "BR01"
select cust_email from Orders t2 left join OrderItems t1 on t1.order_num = t2.order_num left join Customers t3 on t2.cust_id = t3.cust_id where prod_id = "BR01"