From: Tom Lane <tgl@sss.pgh.pa.us>
To: thorbjorn.eriksson@ec.se
Cc: pgsql-sql@postgresql.org
Subject: Re: Stripping white-space in SELECT statments
Date: Thu, 19 Sep 2002 10:31:52 -0400
Message-ID: <25711.1032445912@sss.pgh.pa.us> (raw)
In-Reply-To: <MFEPJLNKECPAPFDGGEIMEENJCBAA.thorbjorn.eriksson@ec.se>
References: <MFEPJLNKECPAPFDGGEIMEENJCBAA.thorbjorn.eriksson@ec.se>
=?iso-8859-1?Q?Thorbj=F6rn_Eriksson?= <thorbjorn.eriksson@ec.se> writes:
> I've encountered a strange behavior in postgres 7.2.1 regarding how psql
> handles strings ending with space characters.
Perhaps you are running in a non-C locale? A lot of locales have
sorting rules that are pretty weird about whitespace.
> The reason that we don't use 'LIKE 201901 %' is that it don't use
> the index
This suggests strongly that you are in a non-C locale. Your external
software seems to be emulating the standard LIKE-to-index optimization;
which as you are now discovering, does not work with non-C sorting
rules (so the system doesn't try to apply it).
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, thorbjorn.eriksson@ec.se
Subject: Re: Stripping white-space in SELECT statments
In-Reply-To: <25711.1032445912@sss.pgh.pa.us>
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