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.

Example 1:

    Input:
    Employees table:
    +-------------+----------+
    | employee_id | name     |
    +-------------+----------+
    | 2           | Crew     |
    | 4           | Haven    |
    | 5           | Kristian |
    +-------------+----------+
    Salaries table:
    +-------------+--------+
    | employee_id | salary |
    +-------------+--------+
    | 5           | 76071  |
    | 1           | 22517  |
    | 4           | 63539  |
    +-------------+--------+
    Output:
    +-------------+
    | employee_id |
    +-------------+
    | 1           |
    | 2           |
    +-------------+
    Explanation:
    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.