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        "question": {
            "questionId": "2110",
            "questionFrontendId": "1965",
            "boundTopicId": null,
            "title": "Employees With Missing Information",
            "titleSlug": "employees-with-missing-information",
            "content": "<p>Table: <code>Employees</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type    |\n+-------------+---------+\n| employee_id | int     |\n| name        | varchar |\n+-------------+---------+\nemployee_id is the primary key for this table.\nEach row of this table indicates the name of the employee whose ID is employee_id.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Table: <code>Salaries</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type    |\n+-------------+---------+\n| employee_id | int     |\n| salary      | int     |\n+-------------+---------+\nemployee_id is the primary key for this table.\nEach row of this table indicates the salary of the employee whose ID is employee_id.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Write an SQL query to report the IDs of all the employees with <strong>missing information</strong>. The information of an employee is missing if:</p>\n\n<ul>\n\t<li>The employee&#39;s <strong>name</strong> is missing, or</li>\n\t<li>The employee&#39;s <strong>salary</strong> is missing.</li>\n</ul>\n\n<p>Return the result table ordered by <code>employee_id</code> <strong>in ascending 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> \nEmployees table:\n+-------------+----------+\n| employee_id | name     |\n+-------------+----------+\n| 2           | Crew     |\n| 4           | Haven    |\n| 5           | Kristian |\n+-------------+----------+\nSalaries table:\n+-------------+--------+\n| employee_id | salary |\n+-------------+--------+\n| 5           | 76071  |\n| 1           | 22517  |\n| 4           | 63539  |\n+-------------+--------+\n<strong>Output:</strong> \n+-------------+\n| employee_id |\n+-------------+\n| 1           |\n| 2           |\n+-------------+\n<strong>Explanation:</strong> \nEmployees 1, 2, 4, and 5 are working at this company.\nThe name of employee 1 is missing.\nThe salary of employee 2 is missing.\n</pre>\n",
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            "difficulty": "Easy",
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            "exampleTestcases": "{\"headers\":{\"Employees\":[\"employee_id\",\"name\"],\"Salaries\":[\"employee_id\",\"salary\"]},\"rows\":{\"Employees\":[[2,\"Crew\"],[4,\"Haven\"],[5,\"Kristian\"]],\"Salaries\":[[5,76071],[1,22517],[4,63539]]}}",
            "categoryTitle": "Database",
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                    "name": "Database",
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            "codeSnippets": [
                {
                    "lang": "MySQL",
                    "langSlug": "mysql",
                    "code": "# Write your MySQL query statement below\n",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "MS SQL Server",
                    "langSlug": "mssql",
                    "code": "/* Write your T-SQL query statement below */\n",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Oracle",
                    "langSlug": "oraclesql",
                    "code": "/* Write your PL/SQL query statement below */\n",
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            "sampleTestCase": "{\"headers\":{\"Employees\":[\"employee_id\",\"name\"],\"Salaries\":[\"employee_id\",\"salary\"]},\"rows\":{\"Employees\":[[2,\"Crew\"],[4,\"Haven\"],[5,\"Kristian\"]],\"Salaries\":[[5,76071],[1,22517],[4,63539]]}}",
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            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [
                "Create table If Not Exists Employees (employee_id int, name varchar(30))",
                "Create table If Not Exists Salaries (employee_id int, salary int)",
                "Truncate table Employees",
                "insert into Employees (employee_id, name) values ('2', 'Crew')",
                "insert into Employees (employee_id, name) values ('4', 'Haven')",
                "insert into Employees (employee_id, name) values ('5', 'Kristian')",
                "Truncate table Salaries",
                "insert into Salaries (employee_id, salary) values ('5', '76071')",
                "insert into Salaries (employee_id, salary) values ('1', '22517')",
                "insert into Salaries (employee_id, salary) values ('4', '63539')"
            ],
            "enableRunCode": true,
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            "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>\"]}",
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