leetcode-problemset/leetcode/originData/customers-who-bought-all-products.json

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            "title": "Customers Who Bought All Products",
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            "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>&nbsp;</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>&nbsp;</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&nbsp;result format is in the following example.</p>\n\n<p>&nbsp;</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",
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                    "lang": "Pandas",
                    "langSlug": "pythondata",
                    "code": "import pandas as pd\n\ndef find_customers(customer: pd.DataFrame, product: pd.DataFrame) -> pd.DataFrame:\n    ",
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                    "lang": "PostgreSQL",
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            "sampleTestCase": "{\"headers\":{\"Customer\":[\"customer_id\",\"product_key\"],\"Product\":[\"product_key\"]},\"rows\":{\"Customer\":[[1,5],[2,6],[3,5],[3,6],[1,6]],\"Product\":[[5],[6]]}}",
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                "Create table If Not Exists Customer (customer_id int, product_key int)",
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                "Truncate table Customer",
                "insert into Customer (customer_id, product_key) values ('1', '5')",
                "insert into Customer (customer_id, product_key) values ('2', '6')",
                "insert into Customer (customer_id, product_key) values ('3', '5')",
                "insert into Customer (customer_id, product_key) values ('3', '6')",
                "insert into Customer (customer_id, product_key) values ('1', '6')",
                "Truncate table Product",
                "insert into Product (product_key) values ('5')",
                "insert into Product (product_key) values ('6')"
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