{
    "data": {
        "question": {
            "questionId": "1712",
            "questionFrontendId": "1565",
            "boundTopicId": null,
            "title": "Unique Orders and Customers Per Month",
            "titleSlug": "unique-orders-and-customers-per-month",
            "content": null,
            "translatedTitle": null,
            "translatedContent": null,
            "isPaidOnly": true,
            "difficulty": "Easy",
            "likes": 75,
            "dislikes": 43,
            "isLiked": null,
            "similarQuestions": "[]",
            "exampleTestcases": "{\"headers\":{\"Orders\":[\"order_id\",\"order_date\",\"customer_id\",\"invoice\"]},\"rows\":{\"Orders\":[[1,\"2020-09-15\",1,30],[2,\"2020-09-17\",2,90],[3,\"2020-10-06\",3,20],[4,\"2020-10-20\",3,21],[5,\"2020-11-10\",1,10],[6,\"2020-11-21\",2,15],[7,\"2020-12-01\",4,55],[8,\"2020-12-03\",4,77],[9,\"2021-01-07\",3,31],[10,\"2021-01-15\",2,20]]}}",
            "categoryTitle": "Database",
            "contributors": [],
            "topicTags": [
                {
                    "name": "Database",
                    "slug": "database",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                }
            ],
            "companyTagStats": null,
            "codeSnippets": null,
            "stats": "{\"totalAccepted\": \"20.3K\", \"totalSubmission\": \"24.7K\", \"totalAcceptedRaw\": 20296, \"totalSubmissionRaw\": 24697, \"acRate\": \"82.2%\"}",
            "hints": [],
            "solution": null,
            "status": null,
            "sampleTestCase": "{\"headers\":{\"Orders\":[\"order_id\",\"order_date\",\"customer_id\",\"invoice\"]},\"rows\":{\"Orders\":[[1,\"2020-09-15\",1,30],[2,\"2020-09-17\",2,90],[3,\"2020-10-06\",3,20],[4,\"2020-10-20\",3,21],[5,\"2020-11-10\",1,10],[6,\"2020-11-21\",2,15],[7,\"2020-12-01\",4,55],[8,\"2020-12-03\",4,77],[9,\"2021-01-07\",3,31],[10,\"2021-01-15\",2,20]]}}",
            "metaData": "{\"mysql\": [\"Create table If Not Exists Orders (order_id int, order_date date, customer_id int, invoice int)\"], \"mssql\": [\"Create table Orders (order_id int, order_date date, customer_id int, invoice int)\"], \"oraclesql\": [\"Create table Orders (order_id int, order_date date, customer_id int, invoice int)\", \"ALTER SESSION SET nls_date_format='YYYY-MM-DD'\"], \"database\": true, \"name\": \"unique_orders_and_customers\", \"pythondata\": [\"Orders = pd.DataFrame([], columns=['order_id', 'order_date', 'customer_id', 'invoice']).astype({'order_id':'Int64', 'order_date':'datetime64[ns]', 'customer_id':'Int64', 'invoice':'Int64'})\"], \"postgresql\": [\"Create table If Not Exists Orders (order_id int, order_date date, customer_id int, invoice int)\"], \"database_schema\": {\"Orders\": {\"order_id\": \"INT\", \"order_date\": \"DATE\", \"customer_id\": \"INT\", \"invoice\": \"INT\"}}}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [
                "Create table If Not Exists Orders (order_id int, order_date date, customer_id int, invoice int)",
                "Truncate table Orders",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('1', '2020-09-15', '1', '30')",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('2', '2020-09-17', '2', '90')",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('3', '2020-10-06', '3', '20')",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('4', '2020-10-20', '3', '21')",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('5', '2020-11-10', '1', '10')",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('6', '2020-11-21', '2', '15')",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('7', '2020-12-01', '4', '55')",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('8', '2020-12-03', '4', '77')",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('9', '2021-01-07', '3', '31')",
                "insert into Orders (order_id, order_date, customer_id, invoice) values ('10', '2021-01-15', '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"
        }
    }
}