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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Michael Parker <parkerm@pobox.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Performance problems testing with Spamassassin 3.1.0
Date: Mon, 01 Aug 2005 00:53:22 -0400
Message-ID: <24657.1122872002@sss.pgh.pa.us> (raw)
In-Reply-To: <20050801040443.GA6527@mail.herk.net>
References: <42E80C28.2040608@aptalaska.net>
	<1122532023.25574.1.camel@localhost.localdomain>
	<42E9749F.6000709@aptalaska.net>
	<1122616211.5691.340.camel@lamb.mcmillan.net.nz>
	<42EA6966.8090402@aptalaska.net>
	<1122668371.5691.352.camel@lamb.mcmillan.net.nz>
	<19405.1122670917@sss.pgh.pa.us>
	<42EAA410.9010700@aptalaska.net>
	<27897.1122748133@sss.pgh.pa.us>
	<20050801040443.GA6527@mail.herk.net>

Michael Parker <parkerm@pobox.com> writes:
> sub bytea_esc {
>   my ($str) = @_;
>   my $buf = "";
>   foreach my $char (split(//,$str)) {
>     if (ord($char) == 0) { $buf .= "\\\\000"; }
>     elsif (ord($char) == 39) { $buf .= "\\\\047"; }
>     elsif (ord($char) == 92) { $buf .= "\\\\134"; }
>     else { $buf .= $char; }
>   }
>   return $buf;
> }

Oh, I see the problem: you forgot to convert " to a backslash sequence.

It would probably also be wise to convert anything >= 128 to a backslash
sequence, so as to avoid any possible problems with multibyte character
encodings.  You wouldn't see this issue in a SQL_ASCII database, but I
suspect it would rise up to bite you with other encoding settings.

			regards, tom lane



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