Can you create nested condition in merge(e.g. insert/update) using owb

Question

Hi,
Does OWB9iR2 allow you to build in nested condition in merge. such as
If no match on col1 and col2 then
if col3 match then no new sequence insert <---
else insert new sequence;
else (there is match on col1 and col2)
update col3 and sequence.
I have an incremental load for a lookup table, where insert/update is used. There are two match columns and surrogate key is used. When there is no match, it shall not insert a sequence when there is a match on third column. I can not use the 3rd column in the original match because it shall be updated where there is a match for the two match column.
I am trying to avoid using transformant for performance impact. Thanks

Answer 1

HIi I think the misleading thing is that in PL/SQL you can use booleans, which is not possible in SQL. So in a PL/SQL tranformation, this is OK:
a:= case when not orgid_lkup( INGRP1.ORG_ID )
then get_supid(..)
else ...
but, the following SQL does not work:
select case when not orgid_lkup( INGRP1.ORG_ID )
then get_supid(..)
else ...
into a
from dual;
I ended up using only 0/1 as boolean return values for these reasons;
so I can have:
select
case when orgid_lkup( INGRP1.ORG_ID ) = 0 then ...
though true booleans are better if you don't have to embed them in SQL.
Antonio