Update query with multiple foreign key parameters

Question

I am trying to perform an update query on one field that uses multiple foreign key parameters from one table to update the other table. The data in all three foreign key parameter fields are not constant. Accuracy is absolutely critical. I tied this as well as other various scenarios with no success. Can anyone help?
Update A_table a
set a.rate = (
select b.rate
from B_table b
where b.id = a.id
and b.transdate = a.transdate
and b.orgnum = a.orgnum
and b.transdate = to_date('31/12/2007', 'dd/mm/yyyy')
)

Answer 1

I would check symbols by a user name and number of posts before calling anyone a hot shot, especially damorgon.<br><br>
Yes version matters (due to bugs and features in each version).<br>
DDL matters because of indexes and associations.<br>
Data matters because it makes a difference on how SQL can be written.<br>
Reasons why an SQL statement don't work is because we aren't looking over your shoulder at your screen.<br><br>
damorgon did leave off his list that the best place for this question is on the PL/SQL, where they will ask you similar questions in addition to your explain plan and data volumes.