How to model in OWB if you have a subquery in your select statement? (11.2)

Question

Which operator (is it the Table operator) to use if I have a subquery as part of my select statement? (The way I do it works, but is not elegant. What I do is create a table for the subquery and than join that with the other sources to point to my target.) But, would appreciate the best way with OWB's features.
Here is the entire SQL (including the subquery):
SELECT to_numbe (null), course_id
at.book, lp.NAME,
(select b.pricing from qp_pricing_attributes b
where b.list_id = ll.list_id and b.product = at.product) sign,
ll.operand AS price, lhb.comments
FROM
pricing_attribs at,
list_lines ll,
list_h lp,
list_b lhb
WHERE 1 = 1
and ll.list_line_id = atrib.list_line_id
AND ll.list_header_id = lp.list_header_id
AND lp.list_header_id = lhb.list_header_id
Thanks you.

Answer 1

Hi
Doesn't need to be a table in the target. Let's take a very simple example, let's say you wanted to do the following;
select ename,(select dname from dept d where d.deptno=e.deptno) from emp e
Then DEPT is your lookup table and EMP is your driving table.
1. Add EMP on to the canvas.
2. Add in lookup operator
3. Bind lookup to DEPT
4. Hit finish
5. Map EMP.DEPT to DEPT.INGRP1 (the lookup operator)
6. Edit lookup operator, on Lookup Conditions tab set DEPTNO for lookup column, and DEPTNO for input attribute
7. Lookup complete now
You can add in a target table operator and map from the source EMP table and the output attributes of the lookup operator. you can change step 4 to carry on through wizard and define lookup, but I have chosen to do 5, to automatically get the names and datatypes of the inputs. There are lot of other options now in 11gR2 in the lookup.
Hope this makes sense.
Cheers
David