how to get second highest salary in each department in sql code example

Example 1: how to get second highest salary in each department in sql

SELECT E.Employers_name, E.dep_number, E.salary
FROM Employers E
WHERE 1 = (SELECT COUNT(DISTINCT salary) 
        FROM Employers B 
        WHERE B.salary > E.salary AND E.dep_number = B.dep_number)
group by E.dep_number

Example 2: how to get max salary in each department in sql

SELECT firstname, MAX(salary)
FROM department d LEFT OUTER JOIN employee e
ON (d.department_id = e.department_id)
GROUP BY department_id;

Example 3: get max salary from each department sql

--Find out the name of top earner in each departments
--Output has Name, Department name and max salary of the department

SELECT E.FIRST_NAME , D.DEPARTMENT_NAME, E.SALARY
FROM EMPLOYEES E
JOIN DEPARTMENTS D ON E.DEPARTMENT_ID = D.DEPARTMENT_ID
WHERE SALARY IN(SELECT MAX(E.SALARY)
FROM EMPLOYEES E
JOIN DEPARTMENTS D ON E.DEPARTMENT_ID = D.DEPARTMENT_ID
GROUP BY DEPARTMENT_NAME);