Tom Lane wrote:
> Jan Wieck <JanWieck@Yahoo.com> writes:
> > The point is that we based our implementation of foreign keys
> > on the SQL3 specs. DEFERRED is not in SQL-92 AFAIK.
>
> I still have a concern about this --- sure, you can set up the circular
> references using ALTER TABLE, but will pg_dump dump them correctly?
AFAIK yes.
I'm not sure if it still uses the CONSTRAINT TRIGGER syntax or does it now with ALTER TABLE. But for sure it
creates all tables first, then loads the data, then activates the constraints (wouldn't work very well
otherwise).
Jan
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