From: Tom Lane <tgl@sss.pgh.pa.us>
To: Jeff Eckermann <jeff_eckermann@yahoo.com>
Cc: devin@synapticvision.com
Cc: pgsql-sql@postgresql.org
Subject: Re: Converting a plperlu function to a plpgsql function
Date: Thu, 22 Jul 2004 16:34:05 -0400
Message-ID: <12272.1090528445@sss.pgh.pa.us> (raw)
In-Reply-To: <20040722190916.89900.qmail@web20824.mail.yahoo.com>
References: <20040722190916.89900.qmail@web20824.mail.yahoo.com>
Jeff Eckermann <jeff_eckermann@yahoo.com> writes:
>> Second line:
>>
>> if ($r=~/^-([0-9]?)([A-z_]+)/)
>> {
>> my $locid = $1;
>> my $table = $2;
> PostgreSQL doesn't offer capturing parentheses.
Hm? See the substring function:
regression=# select substring('foobar' from 'o(.)a');
substring
-----------
b
(1 row)
You'd have to use it twice to collect two separate substrings, which is
mildly annoying, but it's hard to see how to do better without bizarre
behind-the-scenes stuff (like Perl's magic $n variables).
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, jeff_eckermann@yahoo.com, devin@synapticvision.com
Subject: Re: Converting a plperlu function to a plpgsql function
In-Reply-To: <12272.1090528445@sss.pgh.pa.us>
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