leetcode-problemset/leetcode-cn/originData/nth-highest-salary.json

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            "questionId": "177",
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            "categoryTitle": "Database",
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            "title": "Nth Highest Salary",
            "titleSlug": "nth-highest-salary",
            "content": "<p>Table: <code>Employee</code></p>\n\n<pre>\n+-------------+------+\n| Column Name | Type |\n+-------------+------+\n| id          | int  |\n| salary      | int  |\n+-------------+------+\nid is the primary key (column with unique values) for this table.\nEach row of this table contains information about the salary of an employee.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Write a solution to find the <code>n<sup>th</sup></code> highest <strong>distinct</strong> salary from the <code>Employee</code> table. If there are less than <code>n</code> distinct salaries, return&nbsp;<code>null</code>.</p>\n\n<p>The result format is in the following example.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nEmployee table:\n+----+--------+\n| id | salary |\n+----+--------+\n| 1  | 100    |\n| 2  | 200    |\n| 3  | 300    |\n+----+--------+\nn = 2\n<strong>Output:</strong> \n+------------------------+\n| getNthHighestSalary(2) |\n+------------------------+\n| 200                    |\n+------------------------+\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nEmployee table:\n+----+--------+\n| id | salary |\n+----+--------+\n| 1  | 100    |\n+----+--------+\nn = 2\n<strong>Output:</strong> \n+------------------------+\n| getNthHighestSalary(2) |\n+------------------------+\n| null                   |\n+------------------------+\n</pre>\n",
            "translatedTitle": "第N高的薪水",
            "translatedContent": "<p>表:&nbsp;<code>Employee</code></p>\n\n<pre>\n+-------------+------+\n| Column Name | Type |\n+-------------+------+\n| id          | int  |\n| salary      | int  |\n+-------------+------+\nid 是该表的主键（列中的值互不相同）。\n该表的每一行都包含有关员工工资的信息。\n</pre>\n\n<p>&nbsp;</p>\n\n<p>编写一个解决方案查询&nbsp;<code>Employee</code> 表中第 <code>n</code> 高的&nbsp;<strong>不同</strong> 工资。如果少于&nbsp;<code>n</code> 个不同工资，查询结果应该为&nbsp;<code>null</code> 。</p>\n\n<p>查询结果格式如下所示。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1:</strong></p>\n\n<pre>\n<strong>输入:</strong> \nEmployee table:\n+----+--------+\n| id | salary |\n+----+--------+\n| 1  | 100    |\n| 2  | 200    |\n| 3  | 300    |\n+----+--------+\nn = 2\n<strong>输出:</strong> \n+------------------------+\n| getNthHighestSalary(2) |\n+------------------------+\n| 200                    |\n+------------------------+\n</pre>\n\n<p><strong>示例 2:</strong></p>\n\n<pre>\n<strong>输入:</strong> \nEmployee 表:\n+----+--------+\n| id | salary |\n+----+--------+\n| 1  | 100    |\n+----+--------+\nn = 2\n<strong>输出:</strong> \n+------------------------+\n| getNthHighestSalary(2) |\n+------------------------+\n| null                   |\n+------------------------+</pre>\n",
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                    "code": "CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT\nBEGIN\n  RETURN (\n      # Write your MySQL query statement below.\n\n  );\nEND",
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                    "code": "CREATE FUNCTION getNthHighestSalary(@N INT) RETURNS INT AS\nBEGIN\n    RETURN (\n        /* Write your T-SQL query statement below. */\n\n    );\nEND",
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                    "lang": "PostgreSQL",
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                    "code": "CREATE OR REPLACE FUNCTION NthHighestSalary(N INT) RETURNS TABLE (Salary INT) AS $$\nBEGIN\n  RETURN QUERY (\n    -- Write your PostgreSQL query statement below.\n    \n      \n  );\nEND;\n$$ LANGUAGE plpgsql;",
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                    "code": "CREATE FUNCTION getNthHighestSalary(N IN NUMBER) RETURN NUMBER IS\nresult NUMBER;\nBEGIN\n    /* Write your PL/SQL query statement below */\n\n    RETURN result;\nEND;",
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            "sampleTestCase": "{\"headers\": {\"Employee\": [\"id\", \"salary\"]}, \"argument\": 2, \"rows\": {\"Employee\": [[1, 100], [2, 200], [3, 300]]}}",
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                "insert into Employee (id, salary) values ('1', '100')",
                "insert into Employee (id, salary) values ('2', '200')",
                "insert into Employee (id, salary) values ('3', '300')"
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