1965. Employees With Missing Information

https://leetcode.com/problems/employees-with-missing-information

Description

Table: Employees

+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| employee\_id | int     |
| name        | varchar |
+-------------+---------+
employee\_id is the primary key for this table.
Each row of this table indicates the name of the employee whose ID is employee\_id.

Table: Salaries

+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| employee\_id | int     |
| salary      | int     |
+-------------+---------+
employee\_id is the primary key for this table.
Each row of this table indicates the salary of the employee whose ID is employee\_id.

Write an SQL query to report the IDs of all the employees with missing information. The information of an employee is missing if:

• The employee's name is missing, or

• The employee's salary is missing.

Return the result table ordered by employee_id in ascending order.

The query result format is in the following example:

Employees table:
+-------------+----------+
| employee\_id | name     |
+-------------+----------+
| 2           | Crew     |
| 4           | Haven    |
| 5           | Kristian |
+-------------+----------+
Salaries table:
+-------------+--------+
| employee\_id | salary |
+-------------+--------+
| 5           | 76071  |
| 1           | 22517  |
| 4           | 63539  |
+-------------+--------+
Result table:
+-------------+
| employee\_id |
+-------------+
| 1           |
| 2           |
+-------------+
Employees 1, 2, 4, and 5 are working at this company.
The name of employee 1 is missing.
The salary of employee 2 is missing.

ac