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From: Markus Schaber <schabi@logix-tt.com>
To: PFC <lists@peufeu.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: [HACKERS] qsort again (was Re: Strange Create Index
Date: Fri, 17 Feb 2006 01:18:06 +0100
Message-ID: <43F5163E.2020108@logix-tt.com> (raw)
In-Reply-To: <op.s42829s9cigqcu@apollo13>
References: <43F38867.6010701@gpdnet.co.uk>
	<19510.1140036968@sss.pgh.pa.us>
	<19779.1140038874@sss.pgh.pa.us>
	<43F39E53.1020009@gpdnet.co.uk>
	<20781.1140046109@sss.pgh.pa.us>
	<7.0.1.0.2.20060215194635.03b55da0@earthlink.net>
	<21615.1140052893@sss.pgh.pa.us>
	<7.0.1.0.2.20060215223710.03a7c618@earthlink.net>
	<20060216113522.GA3461@uio.no>
	<7.0.1.0.2.20060216071053.0385a1a8@earthlink.net>
	<43F481CD.2010509@logix-tt.com>
	<43F4A7D8.4050907@modgraph-usa.com>
	<29277.1140110108@sss.pgh.pa.us>
	<1140128256.9076.254.camel@archimedes>
	<op.s42829s9cigqcu@apollo13>

Hi, PFC,

PFC schrieb:

>     By the way, I'd like to declare my zipcode columns as SQL_ASCII
> while the  rest of my database is in UNICODE, so they are faster to
> index and sort.  Come on, MySQL does it...

Another use case for parametric column definitions - charset definitions
- and the first one that cannot be emulated via constraints.

Other use cases I remember were range definitions for numbers or PostGIS
dimension, subtype and SRID, but those cann all be emulated via checks /
constraints.

Markus

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