secons hiest salary in sql code example

Example 1: sql find second highest salary employee

/* sql 2nd highest salary employee */
select sal, ename
from emp
where sal =
    (
        select max(sal) from emp where sal <
            (select max(sal) from emp)
    )
----------------------------------------------- option 2
select *
from 
(
    select ename, sal, dense_rank() over(order by sal desc) rank
    from emp
)
where rank =2;

Example 2: 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;