From: Greg Stark <gsstark@mit.edu>
To: elein <elein@varlena.com>
Cc: Josh Berkus <josh@agliodbs.com>
Cc: Rod Taylor <pg@rbt.ca>
Cc: Greg Stark <gsstark@mit.edu>
Cc: Jeff Boes <jboes@nexcerpt.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: SQL challenge--top 10 for each key value?
Date: 11 Apr 2004 00:38:20 -0400
Message-ID: <871xmvf7sz.fsf@stark.xeocode.com> (raw)
In-Reply-To: <20040410164651.K409@cookie.varlena.com>
References: <33af4fa4e4ec230574cefcff737ea40a@news.teranews.com>
<87r7uyf3ki.fsf@stark.xeocode.com>
<1081481466.56361.808.camel@jester>
<200404090906.39541.josh@agliodbs.com>
<20040410164651.K409@cookie.varlena.com>
elein <elein@varlena.com> writes:
> create or replace function pycounter(integer)
> returns integer as
> '
> if args[0] == 0:
> SD["nextno"] = 1
> return SD["nextno"]
> try:
> SD["nextno"] += 1
> except:
> SD["nextno"] = 1
> return SD["nextno"]
> ' language 'plpythonu';
>
> And clearly it can be done faster as a little
> C function.
Does this approach have a hope of working if it's used twice in the same
query?
--
greg
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To: pgsql-sql@postgresql.org
Cc: gsstark@mit.edu, elein@varlena.com, josh@agliodbs.com, pg@rbt.ca, jboes@nexcerpt.com
Subject: Re: SQL challenge--top 10 for each key value?
In-Reply-To: <871xmvf7sz.fsf@stark.xeocode.com>
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