Re: Can this be done with a trigger?

artmerar_at_yahoo.com wrote:
> Hi,
>
> We have a table like this:
>
> CUSTOMER_ID
> PRODUCT_ID
> FORMAT
> STATUS
> DATE_ADDED
> DATE_MODIFIED
>
> We also have a history table like this:
>
> CUSTOMER_ID
> PRODUCT_ID
> FORMAT
> STATUS
> SOURCE
> DATE_ADDED
>
> We want to put a trigger on the first table such that when a record is
> inserted or updated it will make the entry to the history table.
> However, the problem is the 'SOURCE' column on the history table. It
> is not present or needed in the first table.
>
> Entries into the first table are done through a PL/SQL program. So,
> what we want is that when the entry is made into the first table, it
> fires the trigger to make the second entry. But, how can this be done
> if the columns do not match?
>
> We do not want to code it in the PL/SQL program because then someone
> can make an entry to the first table and we cannot record the history
> on it, yet the SOURCE column only gets populated in the PL/SQL
> program....
>
> And, to make things more complicated, depending on what is being
> UPDATED, we may need the values of :NEW or :OLD........
>
> Is there a way to do this?

In what version of Oracle?

Assuming 9i or above you are reinventing the wheel: Use Fine Grained Auditing.

-- 
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damorgan_at_x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org