query to find best of 2 from 3 code example
Example 1: FIND OUT THE NAME HIGHEST SALARY SQL
SELECT FIRST_NAME FROM EMPLOYEES
WHERE SALARY = (SELECT MAX(SALARY) FROM EMPLOYEES);
Example 2: sql highest salary by location
/* Highest salary by Department/Location */
SELECT e.ename, e.sal, e.deptno, d.loc
FROM emp e
JOIN dept d
ON e.deptno = d.deptno
WHERE e.sal in
(
select max(sal)
from emp
group by deptno
)