Philip W. Dalrymple wrote:
>
> What I want to do is to add to this another field that will be NULL
> UNLESS the session sets a value to the "user" for that the middle-wear
> system is acting for.
This can be done via a setting. See
http://www.postgresql.org/docs/8.2/static/functions-admin.html#FUNCTIONS-ADMIN-SET-TABLE
If you'd like to read a fuller discussion of this very topic, search for
a thread titled "can I define own variables" in the archives. I had to
do the same thing back then.
--
Guy Rouillier