UNION and NOT IN CONCEPT
MYSQL\n\nselect employee_id from employees where employee_id not in (select employee_id from Salaries)\nunion \nselect employee_id from salaries where employee_
# MYSQL\n``` \nselect employee_id from employees where employee_id not in (select employee_id from Salaries)\nunion \nselect employee_id from salaries where employee_id not in (select employee_id from employees)\norder by employee_id\n```\n# please upvote me it would encourage me alot\n
['MySQL']