{
    "data": {
        "question": {
            "questionId": "1958",
            "questionFrontendId": "1809",
            "boundTopicId": null,
            "title": "Ad-Free Sessions",
            "titleSlug": "ad-free-sessions",
            "content": null,
            "translatedTitle": null,
            "translatedContent": null,
            "isPaidOnly": true,
            "difficulty": "Easy",
            "likes": 82,
            "dislikes": 56,
            "isLiked": null,
            "similarQuestions": "[]",
            "exampleTestcases": "{\"headers\":{\"Playback\":[\"session_id\",\"customer_id\",\"start_time\",\"end_time\"],\"Ads\":[\"ad_id\",\"customer_id\",\"timestamp\"]},\"rows\":{\"Playback\":[[1,1,1,5],[2,1,15,23],[3,2,10,12],[4,2,17,28],[5,2,2,8]],\"Ads\":[[1,1,5],[2,2,17],[3,2,20]]}}",
            "categoryTitle": "Database",
            "contributors": [],
            "topicTags": [
                {
                    "name": "Database",
                    "slug": "database",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                }
            ],
            "companyTagStats": null,
            "codeSnippets": null,
            "stats": "{\"totalAccepted\": \"14.3K\", \"totalSubmission\": \"24.6K\", \"totalAcceptedRaw\": 14325, \"totalSubmissionRaw\": 24557, \"acRate\": \"58.3%\"}",
            "hints": [],
            "solution": null,
            "status": null,
            "sampleTestCase": "{\"headers\":{\"Playback\":[\"session_id\",\"customer_id\",\"start_time\",\"end_time\"],\"Ads\":[\"ad_id\",\"customer_id\",\"timestamp\"]},\"rows\":{\"Playback\":[[1,1,1,5],[2,1,15,23],[3,2,10,12],[4,2,17,28],[5,2,2,8]],\"Ads\":[[1,1,5],[2,2,17],[3,2,20]]}}",
            "metaData": "{\"mysql\": [\"Create table If Not Exists Playback(session_id int,customer_id int,start_time int,end_time int)\", \"Create table If Not Exists Ads (ad_id int, customer_id int, timestamp int)\"], \"mssql\": [\"Create table Playback(session_id int,customer_id int,start_time int,end_time int)\", \"Create table Ads (ad_id int, customer_id int, timestamp int)\"], \"oraclesql\": [\"Create table Playback(session_id int,customer_id int,start_time int,end_time int)\", \"Create table Ads (ad_id int, customer_id int, timestamp int)\"], \"database\": true, \"name\": \"ad_free_sessions\", \"pythondata\": [\"Playback = pd.DataFrame([], columns=['session_id', 'customer_id', 'start_time', 'end_time']).astype({'session_id':'Int64', 'customer_id':'Int64', 'start_time':'Int64', 'end_time':'Int64'})\", \"Ads = pd.DataFrame([], columns=['ad_id', 'customer_id', 'timestamp']).astype({'ad_id':'Int64', 'customer_id':'Int64', 'timestamp':'Int64'})\"], \"postgresql\": [\"\\nCreate table If Not Exists Playback(session_id int,customer_id int,start_time int,end_time int)\\n\", \"Create table If Not Exists Ads (ad_id int, customer_id int, timestamp int)\"], \"database_schema\": {\"Playback\": {\"session_id\": \"INT\", \"customer_id\": \"INT\", \"start_time\": \"INT\", \"end_time\": \"INT\"}, \"Ads\": {\"ad_id\": \"INT\", \"customer_id\": \"INT\", \"timestamp\": \"INT\"}}}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [
                "Create table If Not Exists Playback(session_id int,customer_id int,start_time int,end_time int)",
                "Create table If Not Exists Ads (ad_id int, customer_id int, timestamp int)",
                "Truncate table Playback",
                "insert into Playback (session_id, customer_id, start_time, end_time) values ('1', '1', '1', '5')",
                "insert into Playback (session_id, customer_id, start_time, end_time) values ('2', '1', '15', '23')",
                "insert into Playback (session_id, customer_id, start_time, end_time) values ('3', '2', '10', '12')",
                "insert into Playback (session_id, customer_id, start_time, end_time) values ('4', '2', '17', '28')",
                "insert into Playback (session_id, customer_id, start_time, end_time) values ('5', '2', '2', '8')",
                "Truncate table Ads",
                "insert into Ads (ad_id, customer_id, timestamp) values ('1', '1', '5')",
                "insert into Ads (ad_id, customer_id, timestamp) values ('2', '2', '17')",
                "insert into Ads (ad_id, customer_id, timestamp) values ('3', '2', '20')"
            ],
            "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"
        }
    }
}