how to get second highest salary department wise without using analytical functions?

Question

Suppose we have 3 employees in each department.we have total 3 departments . Below is the sample source table

Emp deptno salary
A    10     1000
B    10              


        

Answer 1

This will give you 2nd highest salary in each department:

SELECT a.Emp, a.deptno, a.salary
FROM Emp a
WHERE 1 = (SELECT COUNT(DISTINCT salary) 
        FROM Emp b 
        WHERE b.salary > a.salary AND a.deptno = b.deptno)
group by a.deptno