Re: pg_dump and foreign keys troubles

On Tue, Nov 07, 2006 at 04:42:35PM -0500, Tom Lane wrote:
> "Paolo Negri" <hungrylist@gmail.com> writes:
> > My problem is that I have to load the dump (from a 7.3) in a brand new
> > database (8.1) and then I need to do quite a few changes to the schema
> > dropping some old foreign constraint and adding some different ones.
> > ...
> > How can I tell to pg_dump to dump the schema with foreign keys
> > construct instead of creating constraint trigger?
>
> You can't: the information just isn't there in 7.3.  You'll need to look
> at the trigger arguments and reconstruct the FKs.
>
> IIRC the contrib/adddepend script might be able to help you with this.

Would a 7.4 or newer pg_dump connecting to a 7.4 database know enough to
do this for you? If so, Paolo could restore his dump to a 7.3 install
and go from there...
--
Jim Nasby                                            jim@nasby.net
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)