Re: [GENERAL] 7.4Beta

From: Gavin Sherry <swm(at)linuxworld(dot)com(dot)au>
To: Stephan Szabo <sszabo(at)megazone(dot)bigpanda(dot)com>
Cc: Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Peter Childs <Blue(dot)Dragon(at)blueyonder(dot)co(dot)uk>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [GENERAL] 7.4Beta
Date: 2003-08-15 06:05:17
Message-ID: Pine.LNX.4.21.0308151601380.27005-100000@linuxworld.com.au
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On Thu, 14 Aug 2003, Stephan Szabo wrote:

> That really needs to be rewritten to do a single check over the table
> rather than running the constraint for every row. I keep meaning to get
> around to it and never actually do. :( I'm not sure that in practice
> you'll get a better plan at restore time depending on what the default
> statistics give you.

Perhaps it would be easier to allow SKIP VALIDATION (or something) with
ALTER TABLE ADD .... which can set FkConstraint->skip_validation. If we're
just handling pg_dump output, then presumably the data is already
validated. On the other handle, it might encourage users to bypass FKs
when they feel like it...

Thanks,

Gavin

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