{
    "data": {
        "question": {
            "questionId": "1246",
            "questionFrontendId": "1142",
            "boundTopicId": null,
            "title": "User Activity for the Past 30 Days II",
            "titleSlug": "user-activity-for-the-past-30-days-ii",
            "content": null,
            "translatedTitle": null,
            "translatedContent": null,
            "isPaidOnly": true,
            "difficulty": "Easy",
            "likes": 99,
            "dislikes": 362,
            "isLiked": null,
            "similarQuestions": "[]",
            "exampleTestcases": "{\"headers\":{\"Activity\":[\"user_id\",\"session_id\",\"activity_date\",\"activity_type\"]},\"rows\":{\"Activity\":[[1,1,\"2019-07-20\",\"open_session\"],[1,1,\"2019-07-20\",\"scroll_down\"],[1,1,\"2019-07-20\",\"end_session\"],[2,4,\"2019-07-20\",\"open_session\"],[2,4,\"2019-07-21\",\"send_message\"],[2,4,\"2019-07-21\",\"end_session\"],[3,2,\"2019-07-21\",\"open_session\"],[3,2,\"2019-07-21\",\"send_message\"],[3,2,\"2019-07-21\",\"end_session\"],[3,5,\"2019-07-21\",\"open_session\"],[3,5,\"2019-07-21\",\"scroll_down\"],[3,5,\"2019-07-21\",\"end_session\"],[4,3,\"2019-06-25\",\"open_session\"],[4,3,\"2019-06-25\",\"end_session\"]]}}",
            "categoryTitle": "Database",
            "contributors": [],
            "topicTags": [
                {
                    "name": "Database",
                    "slug": "database",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                }
            ],
            "companyTagStats": null,
            "codeSnippets": null,
            "stats": "{\"totalAccepted\": \"39.8K\", \"totalSubmission\": \"112K\", \"totalAcceptedRaw\": 39814, \"totalSubmissionRaw\": 112009, \"acRate\": \"35.5%\"}",
            "hints": [],
            "solution": null,
            "status": null,
            "sampleTestCase": "{\"headers\":{\"Activity\":[\"user_id\",\"session_id\",\"activity_date\",\"activity_type\"]},\"rows\":{\"Activity\":[[1,1,\"2019-07-20\",\"open_session\"],[1,1,\"2019-07-20\",\"scroll_down\"],[1,1,\"2019-07-20\",\"end_session\"],[2,4,\"2019-07-20\",\"open_session\"],[2,4,\"2019-07-21\",\"send_message\"],[2,4,\"2019-07-21\",\"end_session\"],[3,2,\"2019-07-21\",\"open_session\"],[3,2,\"2019-07-21\",\"send_message\"],[3,2,\"2019-07-21\",\"end_session\"],[3,5,\"2019-07-21\",\"open_session\"],[3,5,\"2019-07-21\",\"scroll_down\"],[3,5,\"2019-07-21\",\"end_session\"],[4,3,\"2019-06-25\",\"open_session\"],[4,3,\"2019-06-25\",\"end_session\"]]}}",
            "metaData": "{\"mysql\": [\"Create table If Not Exists Activity (user_id int, session_id int, activity_date date, activity_type ENUM('open_session', 'end_session', 'scroll_down', 'send_message'))\"], \"mssql\": [\"create table Activity (user_id int, session_id int, activity_date date, activity_type varchar(15) not null check(activity_type in ('open_session', 'end_session', 'scroll_down', 'send_message')))\"], \"oraclesql\": [\"create table Activity (user_id int, session_id int, activity_date date, activity_type varchar(15) not null check(activity_type in ('open_session', 'end_session', 'scroll_down', 'send_message')))\", \"ALTER SESSION SET nls_date_format='YYYY-MM-DD'\"], \"database\": true, \"name\": \"user_activity\", \"pythondata\": [\"Activity = pd.DataFrame([], columns=['user_id', 'session_id', 'activity_date', 'activity_type']).astype({'user_id':'Int64', 'session_id':'Int64', 'activity_date':'datetime64[ns]', 'activity_type':'object'})\"], \"postgresql\": [\"Create table If Not Exists Activity (user_id int, session_id int, activity_date date, activity_type VARCHAR(30) CHECK (activity_type IN ('open_session', 'end_session', 'scroll_down', 'send_message')))\\n\"], \"database_schema\": {\"Activity\": {\"user_id\": \"INT\", \"session_id\": \"INT\", \"activity_date\": \"DATE\", \"activity_type\": \"ENUM('open_session', 'end_session', 'scroll_down', 'send_message')\"}}}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [
                "Create table If Not Exists Activity (user_id int, session_id int, activity_date date, activity_type ENUM('open_session', 'end_session', 'scroll_down', 'send_message'))",
                "Truncate table Activity",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('1', '1', '2019-07-20', 'open_session')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('1', '1', '2019-07-20', 'scroll_down')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('1', '1', '2019-07-20', 'end_session')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('2', '4', '2019-07-20', 'open_session')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('2', '4', '2019-07-21', 'send_message')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('2', '4', '2019-07-21', 'end_session')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('3', '2', '2019-07-21', 'open_session')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('3', '2', '2019-07-21', 'send_message')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('3', '2', '2019-07-21', 'end_session')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('3', '5', '2019-07-21', 'open_session')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('3', '5', '2019-07-21', 'scroll_down')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('3', '5', '2019-07-21', 'end_session')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('4', '3', '2019-06-25', 'open_session')",
                "insert into Activity (user_id, session_id, activity_date, activity_type) values ('4', '3', '2019-06-25', 'end_session')"
            ],
            "enableRunCode": true,
            "enableTestMode": false,
            "enableDebugger": false,
            "envInfo": "{\"mysql\": [\"MySQL\", \"<p><code>MySQL 8.0</code>.</p>\"], \"mssql\": [\"MS SQL Server\", \"<p><code>mssql server 2019</code>.</p>\"], \"oraclesql\": [\"Oracle\", \"<p><code>Oracle Sql 11.2</code>.</p>\"], \"pythondata\": [\"Pandas\", \"<p>Python 3.10 with Pandas 2.0.2 and NumPy 1.25.0</p>\"], \"postgresql\": [\"PostgreSQL\", \"<p>PostgreSQL 16</p>\"]}",
            "libraryUrl": null,
            "adminUrl": null,
            "challengeQuestion": null,
            "__typename": "QuestionNode"
        }
    }
}