From: Віталій Тимчишин <tivv00@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Deferred constraint and delete performance
Date: Sun, 14 Feb 2010 11:45:14 +0200
Message-ID: <331e40661002140145l610042d8pc27c61e6c23463df@mail.gmail.com> (raw)
In-Reply-To: <16009.1265813800@sss.pgh.pa.us>
References: <1265799331.28404.14.camel@franck-laptop>
<16009.1265813800@sss.pgh.pa.us>
2010/2/10 Tom Lane <tgl@sss.pgh.pa.us>
> Franck Routier <franck.routier@axege.com> writes:
> > I am wondering if deferring foreign key constraints (instead of
> > disableing them) would increase performance, compared to non deferred
> > constraints
>
> No, it wouldn't make any noticeable difference AFAICS. It would
> postpone the work from end-of-statement to end-of-transaction,
> but not make the work happen any more (or less) efficiently.
>
> What about disc access? Won't "working" with one table, then another be
faster than working with both at the same time?
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To: pgsql-performance@postgresql.org
Cc: tivv00@gmail.com
Subject: Re: Deferred constraint and delete performance
In-Reply-To: <331e40661002140145l610042d8pc27c61e6c23463df@mail.gmail.com>
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