| From: | hubert depesz lubaczewski <depesz(at)depesz(dot)com> |
|---|---|
| To: | Thomas <iamkenzo(at)gmail(dot)com> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: How to tell PostgreSQL about a relationship |
| Date: | 2008-10-26 12:44:41 |
| Message-ID: | 20081026124441.GA6645@depesz.com |
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| Lists: | pgsql-general |
On Sun, Oct 26, 2008 at 10:44:29AM +0100, Thomas wrote:
> In pgAdmin I have removed a few order entries, but the items
> associated to them are still here, now I have zombie items floating
> around that don't belong to any order. So how do I tell PgSQL that
> when I remove a given order, it should remove all associated items
> also?
use foreign keys.
syntax to add them:
1. "references table (field)" in create table/
2. alter table add foreign key
Best regards,
depesz
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