Solution Here  (MySQL WILL NOT SUPPORT FULL JOIN)
\nSELECT employee_id \nFROM Employees \nWHERE employee_id NOT IN (SELECT employee_id FROM Salaries)\nUNION\nSELECT employee_id\nFROM Salaries \nWHERE employee_i
```\nSELECT employee_id \nFROM Employees \nWHERE employee_id NOT IN (SELECT employee_id FROM Salaries)\nUNION\nSELECT employee_id\nFROM Salaries \nWHERE employee_id NOT IN (SELECT employee_id FROM Employees)\n\nORDER BY employee_id\n\n\n```
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