Table: Customer +-------------+---------+ | Column Name | Type | +-------------+---------+ | customer_id | int | | product_key | int | +-------------+---------+ This table may contain duplicates rows. customer_id is not NULL . product_key is a foreign key (reference column) to Product table. Table: Product +-------------+---------+ | Column Name | Type | +-------------+---------+ | product_key | int | +-------------+---------+ product_key is the primary key (column with unique values) for this table. Write a solution to report the customer ids from the Customer table that bought all the products in the Product table. Return the result table in any order . The result format is in the following example. Example 1: Input: Customer table: +-------------+-------------+ | customer_id | product_key | +-------------+-------------+ | 1 | 5 | | 2 | 6 | | 3 | 5 | | 3 | 6 | | 1 | 6 | +-------------+-------------+ Product table: +-------------+ | product_key | +-------------+ | 5 | | 6 | +-------------+ Output: +-------------+ | customer_id | +-------------+ | 1 | | 3 | +-------------+ Explanation: The customers who bought all the products (5 and 6) are customers with IDs 1 and 3.