report generation clarification

I am new to Business objects.I have 2 tables emp and dept tables.I have to generate  a report similar to o/p of below sql query:I have created inner join between emp and dept based on deptno in universe.

Stuckup with below things:Where to define sum(sal) based on group by deptno.

I have to fetch the dname also in the report

select a.sal,a.deptno,b.dname

from

(

select deptno,sum(sal) as sal

FROM      emp group by deptno) a,

dept b

where a.deptno=b.deptno