| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Stephan Szabo <sszabo(at)megazone(dot)bigpanda(dot)com>, Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>, Peter Childs <Blue(dot)Dragon(at)blueyonder(dot)co(dot)uk>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: ADD FOREIGN KEY (was Re: [GENERAL] 7.4Beta) |
| Date: | 2003-09-28 19:40:03 |
| Message-ID: | 200309281940.h8SJe3O01852@candle.pha.pa.us |
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| Lists: | pgsql-general pgsql-hackers |
Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > Tom Lane wrote:
> >> Well, we haven't even *got* a proposed patch yet, but yeah we should
> >> tread carefully.
>
> > OK. What releases had this slow restore problem?
>
> We introduced it in 7.3 --- before that, FKs were simply dumped as
> "create trigger" commands, and there was no check overhead. So arguably
> it is a bug; a performance bug maybe, but that's still a bug. No one
> has yet gone through a dump/reload cycle in which they had to face this
> penalty.
Now that is a strong argument. I knew you would find one. :-)
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
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