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From: Andrew Dunstan <andrew@dunslane.net>
To: Gavin Flower <GavinFlower@archidevsys.co.nz>
Cc: Heikki Linnakangas <hlinnakangas@vmware.com>
Cc: Andres Freund <andres@anarazel.de>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Craig Ringer <craig@2ndQuadrant.com>
Cc: Claudio Freire <klaussfreire@gmail.com>
Cc: Merlin Moncure <mmoncure@gmail.com>
Cc: David Greco <David_Greco@harte-hanks.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Poor performance using CTE
Date: Wed, 21 Nov 2012 14:42:00 -0500
Message-ID: <50AD2E88.4000902@dunslane.net> (raw)
In-Reply-To: <50AD2BD1.8070206@archidevsys.co.nz>
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	<50AC1472.3050607@2ndQuadrant.com>
	<18123.1353455585@sss.pgh.pa.us>
	<50ACD166.1000507@vmware.com>
	<50ACE970.7050701@dunslane.net>
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	<50ACF658.10902@archidevsys.co.nz>
	<50ACF991.3020603@vmware.com>
	<50AD2BD1.8070206@archidevsys.co.nz>


On 11/21/2012 02:30 PM, Gavin Flower wrote:
> WITH FENCE foo AS (SELECT ...)
> default?
>
>
> WITHOUT FENCE foo AS (SELECT ...)     :-)
> Nah!
> I prefer this, but it is too specific to 'WITH',
> and very unSQL standardish!
>
> Alternatively one of the following
>
>  1. WITH UNFENCED foo AS (SELECT ...)
>  2. WITH NO FENCE foo AS (SELECT ...)
>  3. WITH NOT FENCE foo AS (SELECT ...)
>
> I loke the firsat variant, but the 3rd is
> most SQL standardish!
>

As Tom (I think) pointed out, we should not have a syntax tied to CTEs.

cheers

andrew

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  Cc: andrew@dunslane.net, GavinFlower@archidevsys.co.nz, hlinnakangas@vmware.com, andres@anarazel.de, tgl@sss.pgh.pa.us, craig@2ndQuadrant.com, klaussfreire@gmail.com, mmoncure@gmail.com, David_Greco@harte-hanks.com
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