On 17/04/2008, Michael Bayer <[EMAIL PROTECTED]> wrote:
> On Apr 15, 2008, at 10:32 PM, Dave Harrison wrote:
>
> >
> > Hey all,
> >
> > The below code establishes 3 tables (house, dog, owner) and a
> > mapper table to associate owners and dogs (friendships).
> >
> > When I use either MySQL (5.0.51) or SQLite (3.4.2) as the backend,
> > this code works correctly. However when I use Postgres (either 8.2.7
> > or 8.3.1) I get the following integrity error:
> >
> > sqlalchemy.exceptions.IntegrityError: (IntegrityError) update or
> > delete on table "dog" violates foreign key constraint
> > "friendship_dog_id_fkey" on table "friendship" DETAIL: Key (id)=(1)
> > is still referenced from table "friendship". 'DELETE FROM dog WHERE
> > dog.id = %(id)s' [{'id': 1}, {'id': 2}]
>
> always use "delete" cascade in conjunction with "delete-orphan". It
> doesnt make much sense to have delete-orphan only and not "delete"
> cascade. If that doesn't solve your problem here, let me know and Ill
> try running the example script.
If I use "delete, delete-orphan" I get the same errors
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