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": null, "translatedContent": null, "isPaidOnly": false, "difficulty": "Easy", "likes": 272, "dislikes": 22, "isLiked": null, "similarQuestions": "[]", "exampleTestcases": "{\"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]]}}", "categoryTitle": "Database", "contributors": [], "topicTags": [ { "name": "Database", "slug": "database", "translatedName": null, "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": [ { "lang": "MySQL", "langSlug": "mysql", "code": "# Write your MySQL query statement below\n", "__typename": "CodeSnippetNode" }, { "lang": "MS SQL Server", "langSlug": "mssql", "code": "/* Write your T-SQL query statement below */\n", "__typename": "CodeSnippetNode" }, { "lang": "Oracle", "langSlug": "oraclesql", "code": "/* Write your PL/SQL query statement below */\n", "__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\n", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"52.6K\", \"totalSubmission\": \"112K\", \"totalAcceptedRaw\": 52603, \"totalSubmissionRaw\": 112017, \"acRate\": \"47.0%\"}", "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, "enableTestMode": false, "enableDebugger": false, "envInfo": "{\"mysql\": [\"MySQL\", \"
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