{
    "data": {
        "question": {
            "questionId": "3695",
            "questionFrontendId": "3358",
            "categoryTitle": "Database",
            "boundTopicId": 2992013,
            "title": "Books with NULL Ratings",
            "titleSlug": "books-with-null-ratings",
            "content": null,
            "translatedTitle": "评分为 NULL 的图书",
            "translatedContent": null,
            "isPaidOnly": true,
            "difficulty": "Easy",
            "likes": 0,
            "dislikes": 0,
            "isLiked": null,
            "similarQuestions": "[]",
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            "topicTags": [
                {
                    "name": "Database",
                    "slug": "database",
                    "translatedName": "数据库",
                    "__typename": "TopicTagNode"
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            "companyTagStats": null,
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            "stats": "{\"totalAccepted\": \"162\", \"totalSubmission\": \"171\", \"totalAcceptedRaw\": 162, \"totalSubmissionRaw\": 171, \"acRate\": \"94.7%\"}",
            "hints": [],
            "solution": null,
            "status": null,
            "sampleTestCase": "{\"headers\":{\"books\":[\"book_id\",\"title\",\"author\",\"published_year\",\"rating\"]},\"rows\":{\"books\":[[1,\"The Great Gatsby\",\"F. Scott\",1925,4.5],[2,\"To Kill a Mockingbird\",\"Harper Lee\",1960,null],[3,\"Pride and Prejudice\",\"Jane Austen\",1813,4.8],[4,\"The Catcher in the Rye\",\"J.D. Salinger\",1951,null],[5,\"Animal Farm\",\"George Orwell\",1945,4.2],[6,\"Lord of the Flies\",\"William Golding\",1954,null]]}}",
            "metaData": "{\"mysql\":[\"Create table books (\\n    book_id int,\\n    title varchar(255),\\n    author varchar(100),\\n    published_year int,\\n    rating decimal(3,1)\\n)\"],\"mssql\":[\"Create table books (\\n    book_id int,\\n    title varchar(255),\\n    author varchar(100),\\n    published_year int,\\n    rating decimal(3,1)\\n)\"],\"oraclesql\":[\"Create table books (\\n    book_id number,\\n    title varchar2(255),\\n    author varchar2(100),\\n    published_year number,\\n    rating number(3,1)\\n)\"],\"database\":true,\"name\":\"find_unrated_books\",\"postgresql\":[\"CREATE TABLE books (\\n    book_id INTEGER,\\n    title VARCHAR(255),\\n    author VARCHAR(100),\\n    published_year INTEGER,\\n    rating NUMERIC(3, 1)\\n);\\n\"],\"pythondata\":[\"books = pd.DataFrame({ \\\"book_id\\\": pd.Series(dtype=\\\"int\\\"), \\\"title\\\": pd.Series(dtype=\\\"str\\\"), \\\"author\\\": pd.Series(dtype=\\\"str\\\"), \\\"published_year\\\": pd.Series(dtype=\\\"int\\\"), \\\"rating\\\": pd.Series(dtype=\\\"float\\\") })\\n\"],\"database_schema\":{\"books\":{\"book_id\":\"INT\",\"title\":\"VARCHAR(255)\",\"author\":\"VARCHAR(100)\",\"published_year\":\"INT\",\"rating\":\"DECIMAL(3, 1)\"}}}",
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            "judgeType": "large",
            "mysqlSchemas": [
                "Create table books (\n    book_id int,\n    title varchar(255),\n    author varchar(100),\n    published_year int,\n    rating decimal(3,1)\n)",
                "Truncate table books",
                "insert into books (book_id, title, author, published_year, rating) values ('1', 'The Great Gatsby', 'F. Scott', '1925', '4.5')",
                "insert into books (book_id, title, author, published_year, rating) values ('2', 'To Kill a Mockingbird', 'Harper Lee', '1960', NULL)",
                "insert into books (book_id, title, author, published_year, rating) values ('3', 'Pride and Prejudice', 'Jane Austen', '1813', '4.8')",
                "insert into books (book_id, title, author, published_year, rating) values ('4', 'The Catcher in the Rye', 'J.D. Salinger', '1951', NULL)",
                "insert into books (book_id, title, author, published_year, rating) values ('5', 'Animal Farm', 'George Orwell', '1945', '4.2')",
                "insert into books (book_id, title, author, published_year, rating) values ('6', 'Lord of the Flies', 'William Golding', '1954', NULL)"
            ],
            "enableRunCode": true,
            "envInfo": "{\"mysql\":[\"MySQL\",\"<p>\\u7248\\u672c\\uff1a<code>MySQL 8.0<\\/code><\\/p>\"],\"mssql\":[\"MS SQL Server\",\"<p>mssql server 2019.<\\/p>\"],\"oraclesql\":[\"Oracle\",\"<p>Oracle Sql 11.2.<\\/p>\"],\"pythondata\":[\"Pandas\",\"<p>Python 3.10 with Pandas 2.2.2 and NumPy 1.26.4<\\/p>\"],\"postgresql\":[\"PostgreSQL\",\"<p>PostgreSQL 16<\\/p>\"]}",
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            "ugcQuestionId": null,
            "style": "LEETCODE",
            "exampleTestcases": "{\"headers\":{\"books\":[\"book_id\",\"title\",\"author\",\"published_year\",\"rating\"]},\"rows\":{\"books\":[[1,\"The Great Gatsby\",\"F. Scott\",1925,4.5],[2,\"To Kill a Mockingbird\",\"Harper Lee\",1960,null],[3,\"Pride and Prejudice\",\"Jane Austen\",1813,4.8],[4,\"The Catcher in the Rye\",\"J.D. Salinger\",1951,null],[5,\"Animal Farm\",\"George Orwell\",1945,4.2],[6,\"Lord of the Flies\",\"William Golding\",1954,null]]}}",
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