Re: FOREIGN KEY migration of syntax, help needed
| От | Mike Haberman |
|---|---|
| Тема | Re: FOREIGN KEY migration of syntax, help needed |
| Дата | |
| Msg-id | 20070731203456.GA44839@ncsa.uiuc.edu обсуждение |
| Ответ на | Re: FOREIGN KEY migration of syntax, help needed (Tom Lane <tgl@sss.pgh.pa.us>) |
| Список | pgsql-general |
Thank you for the quick response.
If all my old constraints are NOT DEFERRABLE INITIALLY IMMEDIATE
does that mean I don't have to worry about the deferrable keyword?
mike
On Tue, Jul 31, 2007 at 04:00:59PM -0400, Tom Lane wrote:
> Mike Haberman <mikeh@ncsa.uiuc.edu> writes:
> > Will the following take care of all three statements?
>
> > ALTER TABLE ONLY assettype
> > ADD CONSTRAINT at_fk_1 FOREIGN KEY (pid) REFERENCES assettype(id)
> > ON UPDATE CASCADE ON DELETE CASCADE;
>
> Yes, there are three or so triggers under the hood of any FOREIGN KEY
> constraint.
>
> regards, tom lane
--
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Mike Haberman
Senior Software/Network Research Engineer
National Center for Supercomputing Applications
217.244.9370
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