find out the name highest salary sql

1SELECT FIRST_NAME FROM EMPLOYEES
2WHERE SALARY = (SELECT MAX(SALARY) FROM EMPLOYEES);

1/*  Highest salary by Department/Location   */
2SELECT e.ename, e.sal, e.deptno, d.loc
3FROM emp e
4JOIN dept d
5ON e.deptno = d.deptno
6WHERE e.sal in
7( 	
8  	select max(sal) 
9  	from emp 
10  	group by deptno
11)