leetcode-problemset/leetcode-cn/originData/swap-salary.json

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            "title": "Swap Salary",
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            "content": "<p>Table: <code>Salary</code></p>\n\n<pre>\n+-------------+----------+\n| Column Name | Type     |\n+-------------+----------+\n| id          | int      |\n| name        | varchar  |\n| sex         | ENUM     |\n| salary      | int      |\n+-------------+----------+\nid is the primary key for this table.\nThe sex column is ENUM value of type (&#39;m&#39;, &#39;f&#39;).\nThe table contains information about an employee.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Write an SQL query to swap all <code>&#39;f&#39;</code> and <code>&#39;m&#39;</code> values (i.e., change all <code>&#39;f&#39;</code> values to <code>&#39;m&#39;</code> and vice versa) with a <strong>single update statement</strong> and no intermediate temporary tables.</p>\n\n<p>Note that you must write a single update statement, <strong>do not</strong> write any select statement for this problem.</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> \nSalary table:\n+----+------+-----+--------+\n| id | name | sex | salary |\n+----+------+-----+--------+\n| 1  | A    | m   | 2500   |\n| 2  | B    | f   | 1500   |\n| 3  | C    | m   | 5500   |\n| 4  | D    | f   | 500    |\n+----+------+-----+--------+\n<strong>Output:</strong> \n+----+------+-----+--------+\n| id | name | sex | salary |\n+----+------+-----+--------+\n| 1  | A    | f   | 2500   |\n| 2  | B    | m   | 1500   |\n| 3  | C    | f   | 5500   |\n| 4  | D    | m   | 500    |\n+----+------+-----+--------+\n<strong>Explanation:</strong> \n(1, A) and (3, C) were changed from &#39;m&#39; to &#39;f&#39;.\n(2, B) and (4, D) were changed from &#39;f&#39; to &#39;m&#39;.\n</pre>\n",
            "translatedTitle": "变更性别",
            "translatedContent": "<div class=\"original__bRMd\">\n<div>\n<p><code>Salary</code> 表：</p>\n\n<pre>\n+-------------+----------+\n| Column Name | Type     |\n+-------------+----------+\n| id          | int      |\n| name        | varchar  |\n| sex         | ENUM     |\n| salary      | int      |\n+-------------+----------+\nid 是这个表的主键。\nsex 这一列的值是 ENUM 类型，只能从 ('m', 'f') 中取。\n本表包含公司雇员的信息。\n</pre>\n\n<p>&nbsp;</p>\n\n<p>请你编写一个 SQL 查询来交换所有的 <code>'f'</code> 和 <code>'m'</code> （即，将所有 <code>'f'</code> 变为 <code>'m'</code> ，反之亦然），仅使用 <strong>单个 update 语句</strong> ，且不产生中间临时表。</p>\n\n<p>注意，你必须仅使用一条 update 语句，且 <strong>不能</strong> 使用 select 语句。</p>\n\n<p>查询结果如下例所示。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1:</strong></p>\n\n<pre>\n<strong>输入：</strong>\nSalary 表：\n+----+------+-----+--------+\n| id | name | sex | salary |\n+----+------+-----+--------+\n| 1  | A    | m   | 2500   |\n| 2  | B    | f   | 1500   |\n| 3  | C    | m   | 5500   |\n| 4  | D    | f   | 500    |\n+----+------+-----+--------+\n<strong>输出：</strong>\n+----+------+-----+--------+\n| id | name | sex | salary |\n+----+------+-----+--------+\n| 1  | A    | f   | 2500   |\n| 2  | B    | m   | 1500   |\n| 3  | C    | f   | 5500   |\n| 4  | D    | m   | 500    |\n+----+------+-----+--------+\n<strong>解释：</strong>\n(1, A) 和 (3, C) 从 'm' 变为 'f' 。\n(2, B) 和 (4, D) 从 'f' 变为 'm' 。</pre>\n</div>\n</div>\n",
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            "sampleTestCase": "{\"headers\":{\"salary\":[\"id\",\"name\",\"sex\",\"salary\"]},\"rows\":{\"salary\":[[1,\"A\",\"m\",2500],[2,\"B\",\"f\",1500],[3,\"C\",\"m\",5500],[4,\"D\",\"f\",500]]}}",
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                "insert into salary (id, name, sex, salary) values ('2', 'B', 'f', '1500')",
                "insert into salary (id, name, sex, salary) values ('3', 'C', 'm', '5500')",
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