Department wise max salary

I have employee table, with empno, empname, deptno, sal fields.
What I want is I want to get department wise max salary.
my table data would be

empno empname deptno sal
1 vipul 2 200
2 hitesh 2 300
3 raj 2 100
4 mac 1 200
5 alex 1 300
6 mo 3 100

so result should be
deptno empno sal
1 5 300
2 2 300
2 6 100

any ideas?

[b]Question asked by visitor vipul[/b]

select deptno,max(sal) from emp
group by deptno

Its so simple

select deptno,max(sal) from emp group by deptno;