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            "questionId": "596",
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            "categoryTitle": "Database",
            "boundTopicId": 1418,
            "title": "Classes More Than 5 Students",
            "titleSlug": "classes-more-than-5-students",
            "content": "<p>Table: <code>Courses</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type    |\n+-------------+---------+\n| student     | varchar |\n| class       | varchar |\n+-------------+---------+\n(student, class) is the primary key column for this table.\nEach row of this table indicates the name of a student and the class in which they are enrolled.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Write an SQL query to report all the classes that have <strong>at least five students</strong>.</p>\n\n<p>Return the result table in <strong>any order</strong>.</p>\n\n<p>The query result format is in the following example.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nCourses table:\n+---------+----------+\n| student | class    |\n+---------+----------+\n| A       | Math     |\n| B       | English  |\n| C       | Math     |\n| D       | Biology  |\n| E       | Math     |\n| F       | Computer |\n| G       | Math     |\n| H       | Math     |\n| I       | Math     |\n+---------+----------+\n<strong>Output:</strong> \n+---------+\n| class   |\n+---------+\n| Math    |\n+---------+\n<strong>Explanation:</strong> \n- Math has 6 students, so we include it.\n- English has 1 student, so we do not include it.\n- Biology has 1 student, so we do not include it.\n- Computer has 1 student, so we do not include it.\n</pre>\n",
            "translatedTitle": "超过5名学生的课",
            "translatedContent": "<p>表:&nbsp;<code>Courses</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type    |\n+-------------+---------+\n| student     | varchar |\n| class       | varchar |\n+-------------+---------+\n(student, class)是该表的主键列。\n该表的每一行表示学生的名字和他们注册的班级。\n</pre>\n\n<p>&nbsp;</p>\n\n<p>编写一个SQL查询来报告 <strong>至少有5个学生</strong> 的所有类。</p>\n\n<p>以 <strong>任意顺序 </strong>返回结果表。</p>\n\n<p>查询结果格式如下所示。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1:</strong></p>\n\n<pre>\n<strong>输入:</strong> \nCourses table:\n+---------+----------+\n| student | class    |\n+---------+----------+\n| A       | Math     |\n| B       | English  |\n| C       | Math     |\n| D       | Biology  |\n| E       | Math     |\n| F       | Computer |\n| G       | Math     |\n| H       | Math     |\n| I       | Math     |\n+---------+----------+\n<strong>输出:</strong> \n+---------+ \n| class &nbsp; | \n+---------+ \n| Math &nbsp; &nbsp;| \n+---------+\n<strong>解释: </strong>\n-数学课有6个学生，所以我们包括它。\n-英语课有1名学生，所以我们不包括它。\n-生物课有1名学生，所以我们不包括它。\n-计算机课有1个学生，所以我们不包括它。</pre>\n",
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                    "lang": "MySQL",
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            "sampleTestCase": "{\"headers\": {\"courses\": [\"student\", \"class\"]}, \"rows\": {\"courses\": [[\"A\", \"Math\"], [\"B\", \"English\"], [\"C\", \"Math\"], [\"D\", \"Biology\"], [\"E\", \"Math\"], [\"F\", \"Computer\"], [\"G\", \"Math\"], [\"H\", \"Math\"], [\"I\", \"Math\"]]}}",
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                "Create table If Not Exists Courses (student varchar(255), class varchar(255))",
                "Truncate table Courses",
                "insert into Courses (student, class) values ('A', 'Math')",
                "insert into Courses (student, class) values ('B', 'English')",
                "insert into Courses (student, class) values ('C', 'Math')",
                "insert into Courses (student, class) values ('D', 'Biology')",
                "insert into Courses (student, class) values ('E', 'Math')",
                "insert into Courses (student, class) values ('F', 'Computer')",
                "insert into Courses (student, class) values ('G', 'Math')",
                "insert into Courses (student, class) values ('H', 'Math')",
                "insert into Courses (student, class) values ('I', 'Math')"
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