Re: Foreign Keys and OIDs

Foreign keys to oids are not currently supported (and won't
be 7.1 either I believe). Right now you'll have to use a new
key column.

On Sat, 16 Dec 2000, Toshio Kuratomi wrote:

> Is the foreign key mechanism supposed to work with OIDs?
> Is it known to be broken in 7.0.3?
>
> I declare two tables:
>
> CREATE TABLE address (
> street text,
> city text,
> state char(2) check ( state ~'[A-Z]{2}')
> );
>
> CREATE TABLE personaddress (
> person_id integer,
> address_id oid references address(oid),
> notes text,
> primary key (person_id, address_id)
> );
>
> Then I insert data into both address and person.
> When I try to insert into personaddress I get the following reply:
>
> =>INSERT INTO personaddress VALUES ('1', '29321', 'My home');
> ERROR: constraint <unnamed>: table address does not have an attribute oid
>
> Should I create a new primary key column or is there some workaround or a
> fix in the upcoming release or am I just plain doing something wrong?