Message-ID: <546CC725.7000805@tech.sdb.it>
Date: Wed, 19 Nov 2014 17:36:53 +0100
From: Silvio Brandani <silvio.brandani@tech.sdb.it>
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To: Tom Lane <tgl@sss.pgh.pa.us>
CC: Albe Laurenz <laurenz.albe@wien.gv.at>,
 "pgsql-admin@postgresql.org" <pgsql-admin@postgresql.org>
Subject: Re: order by query wrong result
References: <546CA188.705@tech.sdb.it>
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 <546CBDF1.2030007@tech.sdb.it> <27275.1416413426@sss.pgh.pa.us>
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Hi,

I find this workaround:

CREATE OR REPLACE FUNCTION cleanup(text)
RETURNS text AS $$
SELECT replace(replace(replace($1, ' ','x'),'-','x'),'.','x')
$$ LANGUAGE sql;

and I get correct result :

select name
from prva
where name ilike 'savino del bene s%'
order by upper(cleanup(name));

Silvio Brandani


--

Il 19/11/2014 17:10, Tom Lane ha scritto:
> Silvio Brandani <silvio.brandani@tech.sdb.it> writes:
>> Hi,
>>    lc_collate
>> -------------
>>    en_US.UTF-8
> en_US (and, in fact, most Linux locales other than C) uses "dictionary
> order", which ignores pretty much everything except letters in its
> first-pass comparison.
>
> You can check that it's not just Postgres being weird by feeding the
> same data through sort(1) after setting LC_COLLATE this way in its
> environment.  You'll get the same results.
>
> 			regards, tom lane
>


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