Simple SELECT with a group by condition

Question

Hello guys
How could I build a simple map based in the query below ?
select ename, job, sal
from emp
where sal < (select avg(sal) from emp)
What operators should I use ?
Source -> Aggregator-> what else ... ?

Answer 1

Thank you bwise. This helped me a lot.
However, if you can yet help me, I'll be thankful
My question is a little bit more complicated.
I have 2 cursors in PL/SQL
cursor c1 is
select e.ename, d.dname, d.deptno
from emp e, dept d
where e.deptno = d.deptno;
cursor2 c2 (p1 number) is
select avg(salary) avg1
from emp
where deptno = p1;
r1 c1%rowtype;
r2 c2%rowtype;
counter number(4):=0;
begin
counter := 0;
open C1;
loop
fetch C1 into R1;
exit when (C1%NOTFOUND);
counter := counter + 1;
open C2 (r1.deptno);
fetch C2 into R2;
update emp set dept_avg = r2.avg1
where empno = r1.empno;
more processing;
end loop;
end;
Do you have any idea of how can implement this in a map ?
Thank you
Marcelo