[1045] Customers Who Bought All Products
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SQL/LeetCode
Table: Customer +-------------+---------+ | Column Name | Type | +-------------+---------+ | customer_id | int | | product_key | int | +-------------+---------+ There is no primary key for this table. It may contain duplicates. product_key is a foreign key to Product table. Table: Product +-------------+---------+ | Column Name | Type | +-------------+---------+ | product_key | int | +----------..