Thanks for your  replay.

Maybe SQL injection-like security issues will occour,
but I find that differend version of Postgresql get different result.

Such as the sql
set client_encoding='SJIS';
select '\xc3\xaa',* from xxx;

on V7.4 @RH3 got
\xc3\xaa 

on [EMAIL PROTECTED] got
    (blank)

on [EMAIL PROTECTED] got
ERROR:  character 0xc3aa of encoding "UTF8" has no equivalent in "SJIS"

AND 
Version 8.1
http://www.postgresql.org/docs/8.1/interactive/multibyte.html#AEN22591
------------------------------
If the conversion of a particular character is not possible -- suppose you 
chose EUC_JP for the server and LATIN1 for the client, then some Japanese 
characters do not have a representation in LATIN1 -- then an error is reported. 
------------------------------

Version 7.4
http://www.postgresql.org/docs/7.4/interactive/multibyte.html#AEN18371
------------------------------
If the conversion of a particular character is not possible -- suppose you 
chose EUC_JP for the server and LATIN1 for the client, then some Japanese 
characters cannot be converted to LATIN1 -- it is transformed to its 
hexadecimal byte values in parentheses, e.g., (826C). 


I got confused, I just want to get the right sql result enen some character was
not encoded corrctlly. 
Just like  [EMAIL PROTECTED]  the not right character was ignored.
....


On Thu, 16 Aug 2007 11:03:39 +0200
Peter Eisentraut <[EMAIL PROTECTED]> wrote:

> Am Donnerstag, 16. August 2007 08:40 schrieb bhyuan:
> > Can I ignore the error message by confiing the config file?
> 
> No, there are not provisions for that.  Some errors of this type used to be 
> ignored, but that led to SQL injection-like security issues, so you don't 
> want that.
> 
> -- 
> Peter Eisentraut
> http://developer.postgresql.org/~petere/
-- 
bhyuan <[EMAIL PROTECTED]>


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