{
    "data": {
        "question": {
            "questionId": "1877",
            "questionFrontendId": "1729",
            "categoryTitle": "Database",
            "boundTopicId": 564380,
            "title": "Find Followers Count",
            "titleSlug": "find-followers-count",
            "content": "<p>Table: <code>Followers</code></p>\n\n<pre>\n+-------------+------+\n| Column Name | Type |\n+-------------+------+\n| user_id     | int  |\n| follower_id | int  |\n+-------------+------+\n(user_id, follower_id) is the primary key for this table.\nThis table contains the IDs of a user and a follower in a social media app where the follower follows the user.</pre>\n\n<p>&nbsp;</p>\n\n<p>Write an SQL query that will, for each user, return the number of followers.</p>\n\n<p>Return the result table ordered by <code>user_id</code>.</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> \nFollowers table:\n+---------+-------------+\n| user_id | follower_id |\n+---------+-------------+\n| 0       | 1           |\n| 1       | 0           |\n| 2       | 0           |\n| 2       | 1           |\n+---------+-------------+\n<strong>Output:</strong> \n+---------+----------------+\n| user_id | followers_count|\n+---------+----------------+\n| 0       | 1              |\n| 1       | 1              |\n| 2       | 2              |\n+---------+----------------+\n<strong>Explanation:</strong> \nThe followers of 0 are {1}\nThe followers of 1 are {0}\nThe followers of 2 are {0,1}\n</pre>\n",
            "translatedTitle": "求关注者的数量",
            "translatedContent": "<p>表：&nbsp;<code>Followers</code></p>\n\n<pre>\n+-------------+------+\n| Column Name | Type |\n+-------------+------+\n| user_id     | int  |\n| follower_id | int  |\n+-------------+------+\n(user_id, follower_id) 是这个表的主键。\n该表包含一个关注关系中关注者和用户的编号，其中关注者关注用户。</pre>\n\n<p>&nbsp;</p>\n\n<p>写出 SQL 语句，对于每一个用户，返回该用户的关注者数量。</p>\n\n<p>按&nbsp;<code>user_id</code>&nbsp;的顺序返回结果表。</p>\n\n<p>查询结果的格式如下示例所示。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>\nFollowers 表：\n+---------+-------------+\n| user_id | follower_id |\n+---------+-------------+\n| 0       | 1           |\n| 1       | 0           |\n| 2       | 0           |\n| 2       | 1           |\n+---------+-------------+\n<strong>输出：</strong>\n+---------+----------------+\n| user_id | followers_count|\n+---------+----------------+\n| 0       | 1              |\n| 1       | 1              |\n| 2       | 2              |\n+---------+----------------+\n<strong>解释：</strong>\n0 的关注者有 {1}\n1 的关注者有 {0}\n2 的关注者有 {0,1}</pre>\n",
            "isPaidOnly": false,
            "difficulty": "Easy",
            "likes": 11,
            "dislikes": 0,
            "isLiked": null,
            "similarQuestions": "[]",
            "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\": \"5.4K\", \"totalSubmission\": \"8.6K\", \"totalAcceptedRaw\": 5414, \"totalSubmissionRaw\": 8588, \"acRate\": \"63.0%\"}",
            "hints": [],
            "solution": null,
            "status": null,
            "sampleTestCase": "{\"headers\":{\"Followers\":[\"user_id\",\"follower_id\"]},\"rows\":{\"Followers\":[[\"0\",\"1\"],[\"1\",\"0\"],[\"2\",\"0\"],[\"2\",\"1\"]]}}",
            "metaData": "{\n  \"mysql\": [\n    \"Create table If Not Exists Followers(user_id int, follower_id int)\"\n  ],\n  \"mssql\": [\n    \"Create table Followers(user_id int, follower_id int)\"\n  ],\n  \"oraclesql\": [\n    \"Create table Followers(user_id int, follower_id int)\"\n  ],\n  \"database\": true\n}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [
                "Create table If Not Exists Followers(user_id int, follower_id int)",
                "Truncate table Followers",
                "insert into Followers (user_id, follower_id) values ('0', '1')",
                "insert into Followers (user_id, follower_id) values ('1', '0')",
                "insert into Followers (user_id, follower_id) values ('2', '0')",
                "insert into Followers (user_id, follower_id) values ('2', '1')"
            ],
            "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\":{\"Followers\":[\"user_id\",\"follower_id\"]},\"rows\":{\"Followers\":[[\"0\",\"1\"],[\"1\",\"0\"],[\"2\",\"0\"],[\"2\",\"1\"]]}}",
            "__typename": "QuestionNode"
        }
    }
}