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"questionId" : "1135" ,
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"categoryTitle" : "Database" ,
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"title" : "Customers Who Bought All Products" ,
"titleSlug" : "customers-who-bought-all-products" ,
"content" : "<p>Table: <code>Customer</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type |\n+-------------+---------+\n| customer_id | int |\n| product_key | int |\n+-------------+---------+\nThis table may contain duplicates rows. \n<code>customer_id</code> is not NULL<code>.</code>\nproduct_key is a foreign key (reference column) to <code>Product</code> table.\n</pre>\n\n<p> </p>\n\n<p>Table: <code>Product</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type |\n+-------------+---------+\n| product_key | int |\n+-------------+---------+\nproduct_key is the primary key (column with unique values) for this table.\n</pre>\n\n<p> </p>\n\n<p>Write a solution to report the customer ids from the <code>Customer</code> table that bought all the products in the <code>Product</code> table.</p>\n\n<p>Return the result table in <strong>any order</strong>.</p>\n\n<p>The result format is in the following example.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nCustomer table:\n+-------------+-------------+\n| customer_id | product_key |\n+-------------+-------------+\n| 1 | 5 |\n| 2 | 6 |\n| 3 | 5 |\n| 3 | 6 |\n| 1 | 6 |\n+-------------+-------------+\nProduct table:\n+-------------+\n| product_key |\n+-------------+\n| 5 |\n| 6 |\n+-------------+\n<strong>Output:</strong> \n+-------------+\n| customer_id |\n+-------------+\n| 1 |\n| 3 |\n+-------------+\n<strong>Explanation:</strong> \nThe customers who bought all the products (5 and 6) are customers with IDs 1 and 3.\n</pre>\n" ,
"translatedTitle" : "买下所有产品的客户" ,
"translatedContent" : "<p><code>Customer</code> 表：</p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type |\n+-------------+---------+\n| customer_id | int |\n| product_key | int |\n+-------------+---------+\n该表可能包含重复的行。\ncustomer_id 不为 NULL。\nproduct_key 是 Product 表的外键(reference 列)。\n</pre>\n\n<p><code>Product</code> 表：</p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type |\n+-------------+---------+\n| product_key | int |\n+-------------+---------+\nproduct_key 是这张表的主键（具有唯一值的列）。\n</pre>\n\n<p> </p>\n\n<p>编写解决方案，报告 <code>Customer</code> 表中购买了 <code>Product</code> 表中所有产品的客户的 id。</p>\n\n<p>返回结果表 <strong>无顺序要求</strong> 。</p>\n\n<p>返回结果格式如下所示。</p>\n\n<p> </p>\n\n<p><strong>示例 1： （ ） ,
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