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2025-09-29 14:43:44 +08:00
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leetcode-cn/originData/find-customer-referee.json
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@@ -7,17 +7,17 @@
"boundTopicId": 2644,
"title": "Find Customer Referee",
"titleSlug": "find-customer-referee",
"content": "<p>Table: <code>Customer</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type |\n+-------------+---------+\n| id | int |\n| name | varchar |\n| referee_id | int |\n+-------------+---------+\nIn SQL, id is the primary key column for this table.\nEach row of this table indicates the id of a customer, their name, and the id of the customer who referred them.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Find the names of the customer that are <strong>not referred by</strong> the customer with <code>id = 2</code>.</p>\n\n<p>Return the result table in <strong>any order</strong>.</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> \nCustomer table:\n+----+------+------------+\n| id | name | referee_id |\n+----+------+------------+\n| 1 | Will | null |\n| 2 | Jane | null |\n| 3 | Alex | 2 |\n| 4 | Bill | null |\n| 5 | Zack | 1 |\n| 6 | Mark | 2 |\n+----+------+------------+\n<strong>Output:</strong> \n+------+\n| name |\n+------+\n| Will |\n| Jane |\n| Bill |\n| Zack |\n+------+\n</pre>\n",
"content": "<p>Table: <code>Customer</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type |\n+-------------+---------+\n| id | int |\n| name | varchar |\n| referee_id | int |\n+-------------+---------+\nIn SQL, id is the primary key column for this table.\nEach row of this table indicates the id of a customer, their name, and the id of the customer who referred them.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Find the names of the customer that are either:</p>\n\n<ol>\n\t<li><strong>referred by</strong>&nbsp;any&nbsp;customer with&nbsp;<code>id != 2</code>.</li>\n\t<li><strong>not referred by</strong> any customer.</li>\n</ol>\n\n<p>Return the result table in <strong>any order</strong>.</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> \nCustomer table:\n+----+------+------------+\n| id | name | referee_id |\n+----+------+------------+\n| 1 | Will | null |\n| 2 | Jane | null |\n| 3 | Alex | 2 |\n| 4 | Bill | null |\n| 5 | Zack | 1 |\n| 6 | Mark | 2 |\n+----+------+------------+\n<strong>Output:</strong> \n+------+\n| name |\n+------+\n| Will |\n| Jane |\n| Bill |\n| Zack |\n+------+\n</pre>\n",
"translatedTitle": "寻找用户推荐人",
"translatedContent": "<p>表:&nbsp;<code>Customer</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type |\n+-------------+---------+\n| id | int |\n| name | varchar |\n| referee_id | int |\n+-------------+---------+\n在 SQL 中，id 是该表的主键列。\n该表的每一行表示一个客户的 id、姓名以及推荐他们的客户的 id。</pre>\n\n<p>找出那些 <strong>没有被</strong> <code>id = 2</code> 的客户 <strong>推荐</strong> 的客户的姓名。</p>\n\n<p>以 <strong>任意顺序</strong> 返回结果表。</p>\n\n<p>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<b>输入：</b> \nCustomer 表:\n+----+------+------------+\n| id | name | referee_id |\n+----+------+------------+\n| 1 | Will | null |\n| 2 | Jane | null |\n| 3 | Alex | 2 |\n| 4 | Bill | null |\n| 5 | Zack | 1 |\n| 6 | Mark | 2 |\n+----+------+------------+\n<b>输出：</b>\n+------+\n| name |\n+------+\n| Will |\n| Jane |\n| Bill |\n| Zack |\n+------+</pre>\n",
"translatedContent": "<p>表:&nbsp;<code>Customer</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type |\n+-------------+---------+\n| id | int |\n| name | varchar |\n| referee_id | int |\n+-------------+---------+\n在 SQL 中，id 是该表的主键列。\n该表的每一行表示一个客户的 id、姓名以及推荐他们的客户的 id。</pre>\n\n<p>找出以下客户的姓名：</p>\n\n<ol>\n\t<li><strong>被任何</strong>&nbsp;<code>id != 2</code>&nbsp;的用户推荐。</li>\n\t<li><strong>没有被</strong>&nbsp;任何用户推荐。</li>\n</ol>\n\n<p>以 <strong>任意顺序</strong> 返回结果表。</p>\n\n<p>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<b>输入：</b> \nCustomer 表:\n+----+------+------------+\n| id | name | referee_id |\n+----+------+------------+\n| 1 | Will | null |\n| 2 | Jane | null |\n| 3 | Alex | 2 |\n| 4 | Bill | null |\n| 5 | Zack | 1 |\n| 6 | Mark | 2 |\n+----+------+------------+\n<b>输出：</b>\n+------+\n| name |\n+------+\n| Will |\n| Jane |\n| Bill |\n| Zack |\n+------+</pre>\n",
"isPaidOnly": false,
"difficulty": "Easy",
"likes": 295,
"likes": 334,
"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, \"typescript\": false, \"bash\": false, \"php\": false, \"swift\": false, \"kotlin\": false, \"dart\": false, \"golang\": false, \"ruby\": false, \"scala\": false, \"html\": false, \"pythonml\": false, \"rust\": false, \"racket\": false, \"erlang\": false, \"elixir\": false, \"pythondata\": false, \"react\": false, \"vanillajs\": false, \"postgresql\": false, \"cangjie\": false}",
"langToValidPlayground": "{\"cpp\": false, \"java\": false, \"python3\": false, \"python\": false, \"javascript\": false, \"typescript\": false, \"csharp\": false, \"c\": false, \"golang\": false, \"kotlin\": false, \"swift\": false, \"rust\": false, \"ruby\": false, \"php\": false, \"dart\": false, \"scala\": false, \"elixir\": false, \"erlang\": false, \"racket\": false, \"cangjie\": false, \"bash\": false, \"html\": false, \"pythonml\": false, \"react\": false, \"vanillajs\": false, \"mysql\": false, \"mssql\": false, \"postgresql\": false, \"oraclesql\": false, \"pythondata\": false}",
"topicTags": [
{
"name": "Database",
@@ -40,6 +40,12 @@
"code": "/* Write your T-SQL query statement below */",
"__typename": "CodeSnippetNode"
},
{
"lang": "PostgreSQL",
"langSlug": "postgresql",
"code": "-- Write your PostgreSQL query statement below",
"__typename": "CodeSnippetNode"
},
{
"lang": "Oracle",
"langSlug": "oraclesql",
@@ -51,15 +57,9 @@
"langSlug": "pythondata",
"code": "import pandas as pd\n\ndef find_customer_referee(customer: pd.DataFrame) -> pd.DataFrame:\n ",
"__typename": "CodeSnippetNode"
},
{
"lang": "PostgreSQL",
"langSlug": "postgresql",
"code": "-- Write your PostgreSQL query statement below",
"__typename": "CodeSnippetNode"
}
],
"stats": "{\"totalAccepted\": \"274.3K\", \"totalSubmission\": \"404K\", \"totalAcceptedRaw\": 274275, \"totalSubmissionRaw\": 404027, \"acRate\": \"67.9%\"}",
"stats": "{\"totalAccepted\": \"336.8K\", \"totalSubmission\": \"494K\", \"totalAcceptedRaw\": 336754, \"totalSubmissionRaw\": 493978, \"acRate\": \"68.2%\"}",
"hints": [
"Be careful of the NULL value"
],