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From: Nikolas Everett <nik9000@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Kris Jurka <books@ejurka.com>
Cc: Dave Crooke <dcrooke@gmail.com>
Cc: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: pgsql-jdbc@postgresql.org, pgsql-performance <pgsql-performance@postgresql.org>
Cc: Scott Carey <scott@richrelevance.com>
Subject: Re: SOLVED ... Re: Getting rid of a cursor from JDBC .... Re: [PERFORM] Re: HELP: How to tame the 8.3.x JDBC driver with a biq guery result set
Date: Wed, 21 Apr 2010 11:43:52 -0400
Message-ID: <u2jd4e11e981004210843ya970697dp8e3d88dec74577ca@mail.gmail.com> (raw)
In-Reply-To: <24144.1271863826@sss.pgh.pa.us>
References: <q2sca24673e1004191633j10b1124amf1eb51f3bd84f19a@mail.gmail.com>
	<w2kca24673e1004200847k77429a1cra0a6f3560d407d8e@mail.gmail.com>
	<4BCD90D80200002500030BDD@gw.wicourts.gov>
	<x2zca24673e1004201229n653f4e69vd274af4a4aa22d09@mail.gmail.com>
	<4BCDC6B90200002500030C09@gw.wicourts.gov>
	<w2oca24673e1004201340p703b0121iaf852aa28695be65@mail.gmail.com>
	<alpine.BSO.2.00.1004201644280.6736@leary.csoft.net>
	<g2w603c8f071004210741y69db6e92p5a7d18c4fc2940a@mail.gmail.com>
	<q2qd4e11e981004210807ua364abbbua4ae2fb0a91ac053@mail.gmail.com>
	<24144.1271863826@sss.pgh.pa.us>

On Wed, Apr 21, 2010 at 11:30 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:

> >> On Tue, Apr 20, 2010 at 5:05 PM, Kris Jurka <books@ejurka.com> wrote:
> >>> ... There are three ways to plan a PreparedStatement:
>
> FWIW, I think there is some consensus to experiment (in the 9.1 cycle)
> with making the server automatically try replanning of parameterized
> queries with the actual parameter values substituted.  It'll keep doing
> so if it finds that that produces a significantly better plan than the
> generic parameterized plan; which is what you'd expect if there's a
> chance to optimize a LIKE search, eliminate partitions, etc.
>
>                        regards, tom lane
>

That'd be wonderful.

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