Re: Referential constraints in version 8

On Fri, Apr 15, 2005 at 12:31:28AM -0700, Bob Smith wrote:
> We have just finished upgrading Postgres from 7.2 to 8, and I must live
> right or something because there was only one glitch.  When the dump
> from 7.2 was restored into 8, some foreign key references which should
> have been initially deferred had become non-deferrable.  I had to
> re-define those references by dropping the corresponding triggers and
> using ALTER TABLE to put them back as foreign key constraints, which
> seems to have fixed the problem.  However, those references which I
> re-defined now show up explicitly in the table descriptions as foreign
> key constraints, and the corresponding triggers are not listed.  This
> is great since it makes the table descriptions much more intelligible,
> but my concern is that all the other references which I didn't
> re-define still show as triggers and not as foreign key constraints.
> Is this just a cosmetic issue with psql's table description, or is
> there actually a functional difference?  Should I re-define all the
> other foreign key constraints to be safe?

I suggest you run contrib/adddepend against that database.  It will try to
add the missing information to the system catalogs so that the FKs
appear as such and not triggers.

--
Alvaro Herrera (<alvherre[@]dcc.uchile.cl>)
"Uno puede defenderse de los ataques; contra los elogios se esta indefenso"