1965. Employees With Missing Information mysql

https://leetcode.com/problems/employees-with-missing-information/?envType=study-plan&id=sql-i 

Employees With Missing Information - LeetCode

 

SELECT employee_id FROM Employees WHERE employee_id NOT IN (SELECT employee_id FROM Salaries)
UNION 
SELECT employee_id FROM Salaries WHERE employee_id NOT IN (SELECT employee_id FROM Employees)
ORDER BY employee_id;