Humm, ok, it is clear now.
And is there a way to change something in this behaviour, like not ignore
spaces and some type of symbols?
A configuration file or a patch?
Thanks in advance!
> -----Mensagem original-----
> De: pgsql-general-owner@postgresql.org
> [mailto:pgsql-general-owner@postgresql.org]Em nome de Stephan Szabo
> Enviada em: quarta-feira, 28 de março de 2007 19:23
> Para: Carlos H. Reimer
> Cc: pgsql-general@postgresql.org
> Assunto: Re: [GENERAL] Order by behaviour
>
>
> On Wed, 28 Mar 2007, Carlos H. Reimer wrote:
>
> > Hi,
> >
> > We have a PostgreSQL 8.0.6 cluster configured with
> lc_collate=pt_BR.UTF-8
> > and when we run the following SELECT:
> > SELECT substr(nomerazao,1,4),
> > ascii(substr(nomerazao,1,1)),
> > ascii(substr(nomerazao,2,1))
> > from spunico.unico order by nomerazao;
> >
> > is returning:
> >
> > substr | ascii | ascii
> > --------+-------+-------
> > | 32 | 0
> > | 32 | 0
> > 1000 | 49 | 48
> > 1.DI | 49 | 46
> > 1° R | 49 | 176
> > 2M C | 50 | 77
> > 3A.G | 51 | 65
> > A. A | 65 | 46
> > AABA | 65 | 65
> > A.A. | 65 | 46
> > A.AG | 65 | 46
> > A.A. | 65 | 46
> > A.A. | 65 | 46
> > ABAS | 65 | 66
> > ABAS | 65 | 66
> > ABAT | 65 | 66
> > A.B. | 65 | 46
> > A.B. | 65 | 46
> > ABCC | 65 | 66
> > A.B. | 65 | 46
> > A.B. | 65 | 46
> >
> > Are not the lines out of order or is it a normal behaviour for
> a server with
> > lc_collate=pt_BR.UTF-8?
>
> Many collations ignore spaces and symbols on the first pass, so, for
> example you might have "A Z" > "AB" despite the fact that a space has a
> lower value than a B.
>
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