Table: Employees
\n+-------------+----------+\n| Column Name | Type |\n+-------------+----------+\n| employee_id | int |\n| name | varchar |\n| manager_id | int |\n| salary | int |\n+-------------+----------+\nIn SQL, employee_id is the primary key for this table.\nThis table contains information about the employees, their salary, and the ID of their manager. Some employees do not have a manager (manager_id is null). \n\n\n
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Find the IDs of the employees whose salary is strictly less than $30000 and whose manager left the company. When a manager leaves the company, their information is deleted from the Employees table, but the reports still have their manager_id set to the manager that left.
Return the result table ordered by employee_id.
The result format is in the following example.
\n\n\n
Example 1:
\n\n\nInput: \nEmployees table:\n+-------------+-----------+------------+--------+\n| employee_id | name | manager_id | salary |\n+-------------+-----------+------------+--------+\n| 3 | Mila | 9 | 60301 |\n| 12 | Antonella | null | 31000 |\n| 13 | Emery | null | 67084 |\n| 1 | Kalel | 11 | 21241 |\n| 9 | Mikaela | null | 50937 |\n| 11 | Joziah | 6 | 28485 |\n+-------------+-----------+------------+--------+\nOutput: \n+-------------+\n| employee_id |\n+-------------+\n| 11 |\n+-------------+\n\nExplanation: \nThe employees with a salary less than $30000 are 1 (Kalel) and 11 (Joziah).\nKalel's manager is employee 11, who is still in the company (Joziah).\nJoziah's manager is employee 6, who left the company because there is no row for employee 6 as it was deleted.\n\n", "translatedTitle": "上级经理已离职的公司员工", "translatedContent": "
表: Employees
\n+-------------+----------+\n| Column Name | Type |\n+-------------+----------+\n| employee_id | int |\n| name | varchar |\n| manager_id | int |\n| salary | int |\n+-------------+----------+\n在 SQL 中，employee_id 是这个表的主键。\n这个表包含了员工，他们的薪水和上级经理的id。\n有一些员工没有上级经理（其 manager_id 是空值）。\n\n\n
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查找这些员工的id，他们的薪水严格少于$30000 并且他们的上级经理已离职。当一个经理离开公司时，他们的信息需要从员工表中删除掉，但是表中的员工的manager_id 这一列还是设置的离职经理的id 。
返回的结果按照employee_id 从小到大排序。
查询结果如下所示：
\n\n\n\n
示例：
\n\n\n输入：\nEmployees table:\n+-------------+-----------+------------+--------+\n| employee_id | name | manager_id | salary |\n+-------------+-----------+------------+--------+\n| 3 | Mila | 9 | 60301 |\n| 12 | Antonella | null | 31000 |\n| 13 | Emery | null | 67084 |\n| 1 | Kalel | 11 | 21241 |\n| 9 | Mikaela | null | 50937 |\n| 11 | Joziah | 6 | 28485 |\n+-------------+-----------+------------+--------+\n输出：\n+-------------+\n| employee_id |\n+-------------+\n| 11 |\n+-------------+\n\n解释：\n薪水少于 30000 美元的员工有 1 号(Kalel) 和 11号 (Joziah)。\nKalel 的上级经理是 11 号员工，他还在公司上班(他是 Joziah )。\nJoziah 的上级经理是 6 号员工，他已经离职，因为员工表里面已经没有 6 号员工的信息了，它被删除了。\n\n", "isPaidOnly": false, "difficulty": "Easy", "likes": 23, "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}", "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" }, { "lang": "Pandas", "langSlug": "pythondata", "code": "import pandas as pd\n\ndef find_employees(employees: pd.DataFrame) -> pd.DataFrame:\n ", "__typename": "CodeSnippetNode" }, { "lang": "PostgreSQL", "langSlug": "postgresql", "code": "-- Write your PostgreSQL query statement below", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"13.2K\", \"totalSubmission\": \"27.7K\", \"totalAcceptedRaw\": 13238, \"totalSubmissionRaw\": 27715, \"acRate\": \"47.8%\"}", "hints": [], "solution": null, "status": null, "sampleTestCase": "{\"headers\": {\"Employees\": [\"employee_id\", \"name\", \"manager_id\", \"salary\"]}, \"rows\": {\"Employees\": [[3, \"Mila\", 9, 60301], [12, \"Antonella\", null, 31000], [13, \"Emery\", null, 67084], [1, \"Kalel\", 11, 21241], [9, \"Mikaela\", null, 50937], [11, \"Joziah\", 6, 28485]]}}", "metaData": "{\"mysql\":[\"Create table If Not Exists Employees (employee_id int, name varchar(20), manager_id int, salary int)\"],\"mssql\":[\"Create table Employees (employee_id int, name varchar(20), manager_id int, salary int)\"],\"oraclesql\":[\"Create table Employees (employee_id int, name varchar(20), manager_id int, salary int)\"],\"database\":true,\"name\":\"find_employees\",\"pythondata\":[\"Employees = pd.DataFrame([], columns=['employee_id', 'name', 'manager_id', 'salary']).astype({'employee_id':'Int64', 'name':'object', 'manager_id':'Int64', 'salary':'Int64'})\"],\"postgresql\":[\"Create table If Not Exists Employees (employee_id int, name varchar(20), manager_id int, salary int)\"],\"database_schema\":{\"Employees\":{\"employee_id\":\"INT\",\"name\":\"VARCHAR(20)\",\"manager_id\":\"INT\",\"salary\":\"INT\"}}}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [ "Create table If Not Exists Employees (employee_id int, name varchar(20), manager_id int, salary int)", "Truncate table Employees", "insert into Employees (employee_id, name, manager_id, salary) values ('3', 'Mila', '9', '60301')", "insert into Employees (employee_id, name, manager_id, salary) values ('12', 'Antonella', 'None', '31000')", "insert into Employees (employee_id, name, manager_id, salary) values ('13', 'Emery', 'None', '67084')", "insert into Employees (employee_id, name, manager_id, salary) values ('1', 'Kalel', '11', '21241')", "insert into Employees (employee_id, name, manager_id, salary) values ('9', 'Mikaela', 'None', '50937')", "insert into Employees (employee_id, name, manager_id, salary) values ('11', 'Joziah', '6', '28485')" ], "enableRunCode": true, "envInfo": "{\"mysql\":[\"MySQL\",\"
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