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Re: Cascade delete question

From: Bruno Wolff III <bruno(at)wolff(dot)to>
To: Glenn MacGregor <gtm(at)highstreetnetworks(dot)com>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: Cascade delete question
Date: 2004-04-23 03:03:27
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
On Thu, Apr 22, 2004 at 16:46:31 -0400,
  Glenn MacGregor <gtm(at)highstreetnetworks(dot)com> wrote:
> No problem this works great!
> Now I have changed my data to
> vid	vname		parentname
> 1	n1(at)test(dot)com
> 2	n2(at)test(dot)com	n1
> 3	n3(at)test(dot)com	n1
> 4	n4(at)test(dot)com	n1
> 5	n5(at)test(dot)com	n3
> Can I change my delete cascade constraint to do this substring query 
> instead of an exact match?


> Is there anyway to accomplish what I need to do?

If the local part of the email address is a candidate key, separate it
from the domain name and make it the primary key.

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