"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.
regards, tom lane