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        "question": {
            "questionId": "1518",
            "questionFrontendId": "1384",
            "categoryTitle": "Database",
            "boundTopicId": 158843,
            "title": "Total Sales Amount by Year",
            "titleSlug": "total-sales-amount-by-year",
            "content": null,
            "translatedTitle": "按年度列出销售总额",
            "translatedContent": null,
            "isPaidOnly": true,
            "difficulty": "Hard",
            "likes": 21,
            "dislikes": 0,
            "isLiked": null,
            "similarQuestions": "[]",
            "contributors": [],
            "langToValidPlayground": null,
            "topicTags": [
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                    "name": "Database",
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            "stats": "{\"totalAccepted\": \"2.5K\", \"totalSubmission\": \"4.5K\", \"totalAcceptedRaw\": 2508, \"totalSubmissionRaw\": 4487, \"acRate\": \"55.9%\"}",
            "hints": [],
            "solution": null,
            "status": null,
            "sampleTestCase": "{\"headers\": {\"Product\": [\"product_id\", \"product_name\"], \"Sales\": [\"product_id\", \"period_start\", \"period_end\", \"average_daily_sales\"]}, \"rows\": {\"Product\": [[1, \"LC Phone \"], [2, \"LC T-Shirt\"], [3, \"LC Keychain\"]], \"Sales\": [[1, \"2019-01-25\", \"2019-02-28\", 100], [2, \"2018-12-01\", \"2020-01-01\", 10], [3, \"2019-12-01\", \"2020-01-31\", 1]]}}",
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                "Create table If Not Exists Sales (product_id varchar(30), period_start date, period_end date, average_daily_sales int)",
                "Truncate table Product",
                "insert into Product (product_id, product_name) values ('1', 'LC Phone ')",
                "insert into Product (product_id, product_name) values ('2', 'LC T-Shirt')",
                "insert into Product (product_id, product_name) values ('3', 'LC Keychain')",
                "Truncate table Sales",
                "insert into Sales (product_id, period_start, period_end, average_daily_sales) values ('1', '2019-01-25', '2019-02-28', '100')",
                "insert into Sales (product_id, period_start, period_end, average_daily_sales) values ('2', '2018-12-01', '2020-01-01', '10')",
                "insert into Sales (product_id, period_start, period_end, average_daily_sales) values ('3', '2019-12-01', '2020-01-31', '1')"
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            "style": "LEETCODE",
            "exampleTestcases": "{\"headers\": {\"Product\": [\"product_id\", \"product_name\"], \"Sales\": [\"product_id\", \"period_start\", \"period_end\", \"average_daily_sales\"]}, \"rows\": {\"Product\": [[1, \"LC Phone \"], [2, \"LC T-Shirt\"], [3, \"LC Keychain\"]], \"Sales\": [[1, \"2019-01-25\", \"2019-02-28\", 100], [2, \"2018-12-01\", \"2020-01-01\", 10], [3, \"2019-12-01\", \"2020-01-31\", 1]]}}",
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