SQL - MIN Question

Question

Why the following is wrong?

SELECT firstname, lastname, MIN(salary) AS salary FROM employees;

When I ran it, it indicates:

ERROR: column "employees.firstname" must appear in the GROUP BY clause or be used in an aggregate function
LINE 1: SELECT firstname, lastname, MIN(salary) AS salary FROM emplo...

Answer 1

if you write select list ,but you don’t write firstname,lastname,Min(Salary),i think it will be right .
you understand?