| From: | Martijn van Oosterhout <kleptog(at)svana(dot)org> |
|---|---|
| To: | Gurjeet Singh <singh(dot)gurjeet(at)gmail(dot)com> |
| Cc: | Erik Jones <erik(at)myemma(dot)com>, Tom Allison <tom(at)tacocat(dot)net>, pgsql <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: inheritance. more. |
| Date: | 2008-04-29 06:17:02 |
| Message-ID: | 20080429061701.GA3146@svana.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
On Tue, Apr 29, 2008 at 06:31:30AM +0530, Gurjeet Singh wrote:
> On Mon, Apr 28, 2008 at 8:01 PM, Erik Jones <erik(at)myemma(dot)com> wrote:
> > Postgres doesn't yet handle inheritance of constraints from parent to
> > child tables via inheritance.
> Was it done by design or was it a limitation we couldn't get over?
Inheritence of most constraints works, just not unique constraints. The
problem of managing a unique index over multiple tables has not yet
been solved (it's a reasonably hard problem).
Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> Please line up in a tree and maintain the heap invariant while
> boarding. Thank you for flying nlogn airlines.
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