Message-ID: <4505C38C.9080108@encs.concordia.ca>
Date: Mon, 11 Sep 2006 16:14:04 -0400
From: Emi Lu <emilu@encs.concordia.ca>
Reply-To: emilu@encs.concordia.ca
User-Agent: Thunderbird 1.5.0.5 (X11/20060719)
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To: Tom Lane <tgl@sss.pgh.pa.us>
CC: =?ISO-8859-1?Q?Ragnar_=D6sterlund?= <ragoster@gmail.com>,
	pgsql-sql@postgresql.org
Subject: Re: case insensitive regex clause with some latin1 characters
References: <6b4c32560609111209v7edc95dcq9a559d0f5e69027b@mail.gmail.com>
	<5785.1158003676@sss.pgh.pa.us>
In-Reply-To: <5785.1158003676@sss.pgh.pa.us>
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My environment setup as:

  show lc_ctype;
   lc_ctype
-------------
  fr_CA.UTF-8
(1 row)


fis=> SELECT 'Ä' ~* 'ä';
  ?column?
----------
  f
(1 row)


fis=> SELECT 'Ä' ilike 'ä';
  ?column?
----------
  f
(1 row)


I got the same result: false


> "=?ISO-8859-1?Q?Ragnar_=D6sterlund?=" <ragoster@gmail.com> writes:
>> I'm not sure if this is a bug or if I'm doing something wrong. I have
>> a database encoded with ISO-8859-1, aka LATIN1. When I do something
>> like:
> 
>> SELECT 'Ä' ~* 'ä';
> 
>> it returns false.
> 
> Check the database's locale setting (LC_CTYPE).  It has to be one that
> expects LATIN1 encoding.
> 
> The current regex code is generally not able to deal with locale-specific
> behaviors in UTF8 encoding, but it should work for single-byte encodings
> as long as you've got the locale setting right.
> 
> 			regards, tom lane
> 
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