Easy solution with explanation
\n# Find all the employee_ids that have salaries but without names\nSELECT s.employee_id FROM Salaries s LEFT JOIN Employees e \nON e.employee_id = s.employee_i
```\n# Find all the employee_ids that have salaries but without names\nSELECT s.employee_id FROM Salaries s LEFT JOIN Employees e \nON e.employee_id = s.employee_id \nWHERE e.name IS NULL\n\n# Combine\nUNION\n\n# Find all the employee_ids that have names but without salaries\nSELECT e.employee_id FROM Employees e LEFT JOIN Salaries s\nON e.employee_id = s.employee_id \nWHERE s.salary IS NULL\n\n# Reorder the result by employee_id in the ascending order\nORDER BY employee_id;\n```
['Union Find']