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            "questionId": "1301",
            "questionFrontendId": "1179",
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            "title": "Reformat Department Table",
            "titleSlug": "reformat-department-table",
            "content": "<p>Table: <code>Department</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type    |\n+-------------+---------+\n| id          | int     |\n| revenue     | int     |\n| month       | varchar |\n+-------------+---------+\n(id, month) is the primary key of this table.\nThe table has information about the revenue of each department per month.\nThe month has values in [&quot;Jan&quot;,&quot;Feb&quot;,&quot;Mar&quot;,&quot;Apr&quot;,&quot;May&quot;,&quot;Jun&quot;,&quot;Jul&quot;,&quot;Aug&quot;,&quot;Sep&quot;,&quot;Oct&quot;,&quot;Nov&quot;,&quot;Dec&quot;].\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Write an SQL query to reformat the table such that there is a department id column and a revenue column <strong>for each month</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> \nDepartment table:\n+------+---------+-------+\n| id   | revenue | month |\n+------+---------+-------+\n| 1    | 8000    | Jan   |\n| 2    | 9000    | Jan   |\n| 3    | 10000   | Feb   |\n| 1    | 7000    | Feb   |\n| 1    | 6000    | Mar   |\n+------+---------+-------+\n<strong>Output:</strong> \n+------+-------------+-------------+-------------+-----+-------------+\n| id   | Jan_Revenue | Feb_Revenue | Mar_Revenue | ... | Dec_Revenue |\n+------+-------------+-------------+-------------+-----+-------------+\n| 1    | 8000        | 7000        | 6000        | ... | null        |\n| 2    | 9000        | null        | null        | ... | null        |\n| 3    | null        | 10000       | null        | ... | null        |\n+------+-------------+-------------+-------------+-----+-------------+\n<strong>Explanation:</strong> The revenue from Apr to Dec is null.\nNote that the result table has 13 columns (1 for the department id + 12 for the months).\n</pre>\n",
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            "exampleTestcases": "{\"headers\":{\"Department\":[\"id\",\"revenue\",\"month\"]},\"rows\":{\"Department\":[[1,8000,\"Jan\"],[2,9000,\"Jan\"],[3,10000,\"Feb\"],[1,7000,\"Feb\"],[1,6000,\"Mar\"]]}}",
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                    "lang": "MySQL",
                    "langSlug": "mysql",
                    "code": "# Write your MySQL query statement below\n",
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                    "lang": "MS SQL Server",
                    "langSlug": "mssql",
                    "code": "/* Write your T-SQL query statement below */\n",
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            "sampleTestCase": "{\"headers\":{\"Department\":[\"id\",\"revenue\",\"month\"]},\"rows\":{\"Department\":[[1,8000,\"Jan\"],[2,9000,\"Jan\"],[3,10000,\"Feb\"],[1,7000,\"Feb\"],[1,6000,\"Mar\"]]}}",
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            "mysqlSchemas": [
                "Create table If Not Exists Department (id int, revenue int, month varchar(5))",
                "Truncate table Department",
                "insert into Department (id, revenue, month) values ('1', '8000', 'Jan')",
                "insert into Department (id, revenue, month) values ('2', '9000', 'Jan')",
                "insert into Department (id, revenue, month) values ('3', '10000', 'Feb')",
                "insert into Department (id, revenue, month) values ('1', '7000', 'Feb')",
                "insert into Department (id, revenue, month) values ('1', '6000', 'Mar')"
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