leetcode-problemset/leetcode-cn/originData/combine-two-tables.json

{
    "data": {
        "question": {
            "questionId": "175",
            "questionFrontendId": "175",
            "categoryTitle": "Database",
            "boundTopicId": 1060,
            "title": "Combine Two Tables",
            "titleSlug": "combine-two-tables",
            "content": "<p>Table: <code>Person</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type    |\n+-------------+---------+\n| personId    | int     |\n| lastName    | varchar |\n| firstName   | varchar |\n+-------------+---------+\npersonId is the primary key column for this table.\nThis table contains information about the ID of some persons and their first and last names.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Table: <code>Address</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type    |\n+-------------+---------+\n| addressId   | int     |\n| personId    | int     |\n| city        | varchar |\n| state       | varchar |\n+-------------+---------+\naddressId is the primary key column for this table.\nEach row of this table contains information about the city and state of one person with ID = PersonId.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Write an SQL query to report the first name, last name, city, and state of each person in the <code>Person</code> table. If the address of a <code>personId</code> is not present in the <code>Address</code> table, report <code>null</code> instead.</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> \nPerson table:\n+----------+----------+-----------+\n| personId | lastName | firstName |\n+----------+----------+-----------+\n| 1        | Wang     | Allen     |\n| 2        | Alice    | Bob       |\n+----------+----------+-----------+\nAddress table:\n+-----------+----------+---------------+------------+\n| addressId | personId | city          | state      |\n+-----------+----------+---------------+------------+\n| 1         | 2        | New York City | New York   |\n| 2         | 3        | Leetcode      | California |\n+-----------+----------+---------------+------------+\n<strong>Output:</strong> \n+-----------+----------+---------------+----------+\n| firstName | lastName | city          | state    |\n+-----------+----------+---------------+----------+\n| Allen     | Wang     | Null          | Null     |\n| Bob       | Alice    | New York City | New York |\n+-----------+----------+---------------+----------+\n<strong>Explanation:</strong> \nThere is no address in the address table for the personId = 1 so we return null in their city and state.\naddressId = 1 contains information about the address of personId = 2.\n</pre>\n",
            "translatedTitle": "组合两个表",
            "translatedContent": "<p>表: <code>Person</code></p>\n\n<pre>\n+-------------+---------+\n| 列名         | 类型     |\n+-------------+---------+\n| PersonId    | int     |\n| FirstName   | varchar |\n| LastName    | varchar |\n+-------------+---------+\npersonId是该表的主键列。\n该表包含一些人的ID和他们的姓和名的信息。\n</pre>\n\n<p>&nbsp;</p>\n\n<p>表: <code>Address</code></p>\n\n<pre>\n+-------------+---------+\n| 列名         | 类型    |\n+-------------+---------+\n| AddressId   | int     |\n| PersonId    | int     |\n| City        | varchar |\n| State       | varchar |\n+-------------+---------+\naddressId是该表的主键列。\n该表的每一行都包含一个ID = PersonId的人的城市和州的信息。\n</pre>\n\n<p>&nbsp;</p>\n\n<p>编写一个SQL查询来报告 <code>Person</code> 表中每个人的姓、名、城市和状态。如果 <code>personId</code> 的地址不在&nbsp;<code>Address</code>&nbsp;表中，则报告为空 &nbsp;<code>null</code>&nbsp;。</p>\n\n<p>以 <strong>任意顺序</strong> 返回结果表。</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> \nPerson表:\n+----------+----------+-----------+\n| personId | lastName | firstName |\n+----------+----------+-----------+\n| 1        | Wang     | Allen     |\n| 2        | Alice    | Bob       |\n+----------+----------+-----------+\nAddress表:\n+-----------+----------+---------------+------------+\n| addressId | personId | city          | state      |\n+-----------+----------+---------------+------------+\n| 1         | 2        | New York City | New York   |\n| 2         | 3        | Leetcode      | California |\n+-----------+----------+---------------+------------+\n<strong>输出:</strong> \n+-----------+----------+---------------+----------+\n| firstName | lastName | city          | state    |\n+-----------+----------+---------------+----------+\n| Allen     | Wang     | Null          | Null     |\n| Bob       | Alice    | New York City | New York |\n+-----------+----------+---------------+----------+\n<strong>解释:</strong> \n地址表中没有 personId = 1 的地址，所以它们的城市和州返回null。\naddressId = 1 包含了 personId = 2 的地址信息。</pre>\n",
            "isPaidOnly": false,
            "difficulty": "Easy",
            "likes": 1102,
            "dislikes": 0,
            "isLiked": null,
            "similarQuestions": "[{\"title\": \"Employee Bonus\", \"titleSlug\": \"employee-bonus\", \"difficulty\": \"Easy\", \"translatedTitle\": \"\\u5458\\u5de5\\u5956\\u91d1\"}]",
            "contributors": [],
            "langToValidPlayground": "{\"cpp\": false, \"java\": false, \"python\": false, \"python3\": false, \"mysql\": false, \"mssql\": false, \"oraclesql\": false, \"c\": false, \"csharp\": false, \"javascript\": false, \"ruby\": false, \"bash\": false, \"swift\": false, \"golang\": false, \"scala\": false, \"html\": false, \"pythonml\": false, \"kotlin\": false, \"rust\": false, \"php\": false, \"typescript\": false, \"racket\": false, \"erlang\": false, \"elixir\": false}",
            "topicTags": [
                {
                    "name": "Database",
                    "slug": "database",
                    "translatedName": "数据库",
                    "__typename": "TopicTagNode"
                }
            ],
            "companyTagStats": null,
            "codeSnippets": [
                {
                    "lang": "MySQL",
                    "langSlug": "mysql",
                    "code": "# Write your MySQL query statement below",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "MS SQL Server",
                    "langSlug": "mssql",
                    "code": "/* Write your T-SQL query statement below */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Oracle",
                    "langSlug": "oraclesql",
                    "code": "/* Write your PL/SQL query statement below */",
                    "__typename": "CodeSnippetNode"
                }
            ],
            "stats": "{\"totalAccepted\": \"373.9K\", \"totalSubmission\": \"508.6K\", \"totalAcceptedRaw\": 373851, \"totalSubmissionRaw\": 508550, \"acRate\": \"73.5%\"}",
            "hints": [],
            "solution": {
                "id": "101",
                "canSeeDetail": true,
                "__typename": "ArticleNode"
            },
            "status": null,
            "sampleTestCase": "{\"headers\":{\"Person\":[\"PersonId\",\"LastName\",\"FirstName\"],\"Address\":[\"AddressId\",\"PersonId\",\"City\",\"State\"]},\"rows\":{\"Person\":[[1,\"Wang\",\"Allen\"],[2,\"Alice\",\"Bob\"]],\"Address\":[[1,2,\"New York City\",\"New York\"],[2,3,\"Leetcode\",\"California\"]]}}",
            "metaData": "{\n  \"mysql\": [\n    \"Create table If Not Exists Person (personId int, firstName varchar(255), lastName varchar(255))\",\n    \"Create table If Not Exists Address (addressId int, personId int, city varchar(255), state varchar(255))\"\n  ],\n  \"mssql\": [\n    \"Create table Person (personId int, firstName varchar(255), lastName varchar(255))\",\n    \"Create table Address (addressId int, personId int, city varchar(255), state varchar(255))\"\n  ],\n  \"oraclesql\": [\n    \"Create table Person (personId int, firstName varchar(255), lastName varchar(255))\",\n    \"Create table Address (addressId int, personId int, city varchar(255), state varchar(255))\"\n  ],\n  \"database\": true\n}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [
                "Create table If Not Exists Person (personId int, firstName varchar(255), lastName varchar(255))",
                "Create table If Not Exists Address (addressId int, personId int, city varchar(255), state varchar(255))",
                "Truncate table Person",
                "insert into Person (personId, lastName, firstName) values ('1', 'Wang', 'Allen')",
                "insert into Person (personId, lastName, firstName) values ('2', 'Alice', 'Bob')",
                "Truncate table Address",
                "insert into Address (addressId, personId, city, state) values ('1', '2', 'New York City', 'New York')",
                "insert into Address (addressId, personId, city, state) values ('2', '3', 'Leetcode', 'California')"
            ],
            "enableRunCode": true,
            "envInfo": "{\"mysql\":[\"MySQL\",\"<p>\\u7248\\u672c\\uff1a<code>MySQL 8.0<\\/code><\\/p>\"],\"mssql\":[\"MS SQL Server\",\"<p>mssql server 2019.<\\/p>\"],\"oraclesql\":[\"Oracle\",\"<p>Oracle Sql 11.2.<\\/p>\"]}",
            "book": null,
            "isSubscribed": false,
            "isDailyQuestion": false,
            "dailyRecordStatus": null,
            "editorType": "CKEDITOR",
            "ugcQuestionId": null,
            "style": "LEETCODE",
            "exampleTestcases": "{\"headers\":{\"Person\":[\"personId\",\"lastName\",\"firstName\"],\"Address\":[\"addressId\",\"personId\",\"city\",\"state\"]},\"rows\":{\"Person\":[[1,\"Wang\",\"Allen\"],[2,\"Alice\",\"Bob\"]],\"Address\":[[1,2,\"New York City\",\"New York\"],[2,3,\"Leetcode\",\"California\"]]}}",
            "__typename": "QuestionNode"
        }
    }
}