Обсуждение: utf8 issue

Hello everybody. I recently converted my db from ASCII encoding to UTF8
(we have a lot of spanish-speaking members, and need the extra character
support). Everything was working great, but I noticed this error, while
trying to COPY one of our tables from a csv.

ERROR: invalid byte sequence for encoding "UTF8": 0xb9
SQL state: 22021
Hint: This error can also happen if the byte sequence does not match the
encoding expected by the server, which is controlled by "client_encoding".
Context: COPY transaction_import, line 59358

Is there anything I can do to look for these sorts of errors and fix
them? I'm really not great with character encodings and I'm not sure
where to go on this. Any help?

--
Tom Hart
IT Specialist
Cooperative Federal
723 Westcott St.
Syracuse, NY 13210
(315) 471-1116 ext. 202
(315) 476-0567 (fax)

Tom Hart wrote:
> Hello everybody. I recently converted my db from ASCII encoding to UTF8
> (we have a lot of spanish-speaking members, and need the extra character
> support). Everything was working great, but I noticed this error, while
> trying to COPY one of our tables from a csv.
>
> ERROR: invalid byte sequence for encoding "UTF8": 0xb9

Not converted, I fear.

Why not use latin9 rather than utf8 - that should cover everything and
is probably what it's in anyway.

> Is there anything I can do to look for these sorts of errors and fix
> them? I'm really not great with character encodings and I'm not sure
> where to go on this. Any help?

Google a bit for iconv (and postgresql) to get your characters valid.

--
   Richard Huxton
   Archonet Ltd

Tom Hart wrote:
> Hello everybody. I recently converted my db from ASCII encoding to UTF8
> (we have a lot of spanish-speaking members, and need the extra character
> support). Everything was working great, but I noticed this error, while
> trying to COPY one of our tables from a csv.
>
> ERROR: invalid byte sequence for encoding "UTF8": 0xb9
> SQL state: 22021
> Hint: This error can also happen if the byte sequence does not match the
> encoding expected by the server, which is controlled by
> "client_encoding".
> Context: COPY transaction_import, line 59358

Did you try setting client_encoding beforehand?  I think a simple

PGOPTIONS="client_encoding=latin9" pg_restore ...

should suffice.

Now, if you have mixed UTF8 and Latin1/Latin9 data, you are hosed
(meaning you'll have to wade through the stuff and figure out what data
is in what encoding, and fix it).

--
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.

Richard Huxton wrote:
> Tom Hart wrote:
>> Hello everybody. I recently converted my db from ASCII encoding to
>> UTF8 (we have a lot of spanish-speaking members, and need the extra
>> character support). Everything was working great, but I noticed this
>> error, while trying to COPY one of our tables from a csv.
>>
>> ERROR: invalid byte sequence for encoding "UTF8": 0xb9
>
> Not converted, I fear.
>
> Why not use latin9 rather than utf8 - that should cover everything and
> is probably what it's in anyway.
I was specifically requested to use UTF-8, and the work's already been
done, so converting again is not my favorite option.
>
>> Is there anything I can do to look for these sorts of errors and fix
>> them? I'm really not great with character encodings and I'm not sure
>> where to go on this. Any help?
>
> Google a bit for iconv (and postgresql) to get your characters valid.
>
I already have a php script that does some data scrubbing before the
copy. I added this line to the script and things seem to be working
better now

$line = iconv("ISO-8859-1", "UTF-8", $line);

Thanks for the help guys :-)

--
Tom Hart
IT Specialist
Cooperative Federal
723 Westcott St.
Syracuse, NY 13210
(315) 471-1116 ext. 202
(315) 476-0567 (fax)

On 2008-02-26 13:04, Tom Hart wrote:
>>
> I already have a php script that does some data scrubbing before the
> copy. I added this line to the script and things seem to be working
> better now
>
> $line = iconv("ISO-8859-1", "UTF-8", $line);
>
> Thanks for the help guys :-)
>

Read up on the difference between PostgreSQL's server_encoding and
client_encoding.

The "server_encoding" is how the data is stored in the server, and can
be anything compatible (UTF-8, ISO-8859-1, whatever will hold your
character set).

The "client_encoding" is how the incoming (or outgoing) data is
treated/assumed.  PostgreSQL does the necessary conversion for you.

You can set/change the "client_encoding" in so many ways, it gives you
total flexibility, in order of increasing priority:

1. You can set it as the default for any database (see ALTER DATABASE ...).
2. You can set it in an environment variable, which means the client
utilities (and I believe the libraries) use that.
3. In PSQL, you can set it with the "\encoding" statement (which applies
to the session or until changed), or the "SET [SESSION | LOCAL ]
client_encoding TO ...", which will set it for the session or just the
current transaction.

I just went through this, and while I initially used "iconv" to get up
and running, I've removed most of those in my scripts and just use the
PostgreSQL conversion instead.

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