Answers for "get second highest salary in sql how much time it takes to write query for 6 Years experianced"

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
)

how to get employee having maximum experience in mysql

select max(salary), dept_id from employee where salary not in(select max(salary) from employee) group by dept_id;