Обсуждение: change db encoding?

hi,

for historical reasons ;)  (are there any other reasons),
we have a postgres db,
where the data are in iso-8859-15 encoding,
but the "database encoding" is iso-8859-1.

question(s):
1. is it possible to change the db-encoding?
2. if it remains like it is currently, when can there be problems?


thanks,
gabor

Am Dienstag, 27. September 2005 10:15 schrieb Gábor Farkas:
> for historical reasons ;)  (are there any other reasons),
> we have a postgres db,
> where the data are in iso-8859-15 encoding,
> but the "database encoding" is iso-8859-1.
>
> question(s):
> 1. is it possible to change the db-encoding?

You can hack pg_database directly to change it.  There shouldn't be a problem
in this case.

> 2. if it remains like it is currently, when can there be problems?

Problems will only occur for characters which are not in both -1 and -15.  For
exampel, if you have text with a Euro symbol in your database, and the server
wants to recode it to a different encoding because, say, the client runs in
UTF-8, then you will get wrong output.  So it's in your interest to fix this.

--
Peter Eisentraut
http://developer.postgresql.org/~petere/

Peter Eisentraut wrote:
> Am Dienstag, 27. September 2005 10:15 schrieb Gábor Farkas:
>
>>for historical reasons ;)  (are there any other reasons),
>>we have a postgres db,
>>where the data are in iso-8859-15 encoding,
>>but the "database encoding" is iso-8859-1.
>>
>>2. if it remains like it is currently, when can there be problems?
>
>
> Problems will only occur for characters which are not in both -1 and -15.  For
> exampel, if you have text with a Euro symbol in your database, and the server
> wants to recode it to a different encoding because, say, the client runs in
> UTF-8, then you will get wrong output.  So it's in your interest to fix this.

so only at re-encoding?

i'm asking because right now it works fine (yes, even for those chars
that are different between -1 and -15).

in other words, could you tell me a test-case when an error might happen?

thanks,
gabor