| From: | Andrew Sullivan <andrew(at)libertyrms(dot)info> |
|---|---|
| To: | PgSQL Performance ML <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: schema/db design wrt performance |
| Date: | 2003-01-16 16:05:22 |
| Message-ID: | 20030116110522.F32288@mail.libertyrms.com |
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| Lists: | pgsql-performance |
On Thu, Jan 16, 2003 at 09:50:04AM -0600, Ron Johnson wrote:
>
> Could BEFORE INSERT|UPDATE|DELETE triggers perform the same
> functionality while touching only the desired records, thus
> decreasing conflict?
You can make the constraint DEFERRABLE INITIALY DEFERRED. It helps
somewhat. But the potential for deadlock, and the backing up, will
still happen to some degree. It's a well-known flaw in the FK
system. I beleive the FK implementation was mostly intended as a
proof of concept.
A
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Andrew Sullivan 204-4141 Yonge Street
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<andrew(at)libertyrms(dot)info> M2P 2A8
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