Re: Patch: improve selectivity estimation for IN/NOT IN

From: Euler Taveira de Oliveira <euler(at)timbira(dot)com>
To: Daniele Varrazzo <daniele(dot)varrazzo(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Patch: improve selectivity estimation for IN/NOT IN
Date: 2012-03-04 13:44:40
Message-ID: 4F5371C8.6080104@timbira.com
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On 04-03-2012 00:20, Daniele Varrazzo wrote:
> It looks like you have grand plans for array estimation. My patch has
> a much more modest scope, and I'm hoping it could be applied to
> currently maintained PG versions, as I consider the currently produced
> estimations a bug.
>
We don't normally add new features to stable branches unless it is a bug. In
the optimizer case, planner regression is a bug (that this case is not).

--
Euler Taveira de Oliveira - Timbira http://www.timbira.com.br/
PostgreSQL: Consultoria, Desenvolvimento, Suporte 24x7 e Treinamento

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