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Re: to_ascii function

From: Halley Pacheco de Oliveira <halleypo(at)yahoo(dot)com(dot)br>
To: pgsql-docs(at)postgresql(dot)org
Cc: Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>
Subject: Re: to_ascii function
Date: 2004-06-07 21:28:10
Message-ID: 20040607212810.15543.qmail@web13125.mail.yahoo.com (view raw or flat)
Thread:
Lists: pgsql-docs
Dear Karel,

The server encoding and the client encoding are
LATIN1. These results are from phpPgAdmin:

This is ok:

select ascii('ª')

ascii
-----
170

select chr(170)

chr
---
ª

select to_ascii(chr(170))

to_ascii
--------
a

But this is not ok!

select ascii('º')

ascii
-----
186

select chr(186)

chr
---
º

select to_ascii(chr(186))

to_ascii
--------
 

select ascii(to_ascii(chr(186)))

ascii
-----
32

I think that if to_ascii of ª (170) is a, then
to_ascii of º (186) should be o, and not space.

Halley
 --- Karel Zak <zakkr(at)zf(dot)jcu(dot)cz> escreveu: > On Sat,
Jun 05, 2004 at 10:39:15AM -0300, Halley
> Pacheco de Oliveira wrote:
> > This query didn't work as I was expecting. Any
> reasons
> > for that ?
> > 
> > SELECT TO_ASCII('ÁÉÍÓÚáéíóú??°')
> > 
> > result -> 'AEIOUaeioua  '
> > 
> > I used psql, java and phpPgAdmin without success.
> > 
> > (PostgreSQL 7.4.2 encoding latin1)
> 
>  Are all chars  in your query LATIN1  symbols and
> are you  sure that all
>  used  chars  have counterpart  in  ASCII? For  this
> to_ascii()  support
>  LATIN1, LATIN2  and WIN1250 only. I'm  not sure if 
> there is a  way how
>  convert others special chars (for example some
> Asiatic encodings).
> 
>  # show server_encoding;
>  server_encoding 
>  -----------------
>  LATIN1
> 
>  # show client_encoding;
>  client_encoding 
>  -----------------
>  LATIN1
> 
>  # SELECT '>>' || TO_ASCII('ÁÉÍÓÚáéíóú??°') || '<<';
>      ?column?      
>  -------------------
>  >>AEIOUaeiou?? <<
>  
> 
>  The last char  in the string is dec 176 (hex 0xB0).
> Which  char do you
>  expect after conversion to ASCII (0-127)?
> 
>     Karel
> 
> -- 
>  Karel Zak  <zakkr(at)zf(dot)jcu(dot)cz>
>  http://home.zf.jcu.cz/~zakkr/ 


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