Обсуждение: R: Re: [HACKERS] Chinese in Postgres

Thanks for your answer.
Yes, the client is also UTF8:

MyDB=# show
client_encoding;
 client_encoding
-----------------
 UTF8
(1 row)


Cheers
Francesco
----Messaggio originale----
Da: hannu@2ndQuadrant.com

Data: 16/08/2013 14.16
A: "ciifrancesco@tiscali.it"
<ciifrancesco@tiscali.it>
Cc: <pgsql-hackers@postgresql.org>, <pgsql-zh-
general@postgresql.org>, <pgsql-ru-general@postgresql.org>
Ogg: Re:
[HACKERS] Chinese in Postgres

On 08/16/2013 01:25 PM,
ciifrancesco@tiscali.it wrote:
> Hello all,
> before writing this
message, I wrote about this in other mailing lists
> without solving my
problem.
> Maybe some of you can help me.
>
> I have problems with a DB
in postgres, when i try to insert Chinese
> strings in UTF-8 format.
>
If I insert the data using a C++ program I have empty squares, in this

> format: ��� (3 empty squares for each chinese ideogram as that is the

> length in UTF-8)
> If the string contains chinese mixed with ASCII,
the ASCII is OK but
> the Chinese is broken:
> 漢語1-3漢語  --> ������1-
3������
Can you cehck that your client encoding is also UTF8

hannu=#
show client_encoding ;
 client_encoding
-----------------
 UTF8
(1 row)



Cheers


--
Hannu Krosing
PostgreSQL Consultant
Performance,
Scalability and High Availability
2ndQuadrant Nordic OÜ



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On 08/16/2013 02:40 PM, ciifrancesco@tiscali.it wrote:
> Thanks for your answer.
> Yes, the client is also UTF8:
>
> MyDB=# show
> client_encoding;
>  client_encoding
> -----------------
>  UTF8
> (1 row)
Strange, it works for me :

hannu@hannu-900X3E:~/workspace/my-app$ psql
psql (9.3beta2, server 9.2.4)
Type "help" for help.

hannu=# select * from pg_stat_activity;
hannu=# show client_encoding ;
 client_encoding
-----------------
 UTF8
(1 row)

hannu=# create table tchinese(data text);
CREATE TABLE
hannu=# insert into tchinese values('漢語1-3漢語');
INSERT 0 1
hannu=# select * from tchinese ;
    data
-------------
 漢語1-3漢語
(1 row)

hannu=# \q


Are you sure that the client-encoding is also the same when you are
actually doing the import ?

Or when you are getting the wrong results when reading

what does length() of the bad field give you ?

hannu=# select data, length(data) from tchinese ;
    data     | length
-------------+--------
 漢語1-3漢語 |      7
(1 row)




--
Hannu Krosing
PostgreSQL Consultant
Performance, Scalability and High Availability
2ndQuadrant Nordic OÜ

[ Could you please trim your citations, i.e., please don’t top-post:
https://en.wikipedia.org/wiki/Posting_style#Top-posting ]

2013/8/16 Francesco <ciifrancesco@tiscali.it>:

> Thanks for your answer.
> Yes, the client is also UTF8:
>
> MyDB=# show
> client_encoding;
> client_encoding
> -----------------
> UTF8
> (1 row)

I guess that this is the client encoding used by psql. I suspect your
C++-program doesn’t use client encoding UTF8. What library are you
using, libpq? Did you run the psql instance (whose output you pasted)
on Windows or on some kind of UNIX-machine over SSH? Does your
problematic C++-program run on Windows or the UNIX-machine?

(The “client encoding” is not a property of the database, but of the
specific client you are using. The C++-program’s client encoding might
therefore by entirely different from the one used by psql, especially
if you don’t run them on the same machine.)

[ BTW, I think this question really doesn’t belong on -hackers, as
no-one seems to think it is a bug, nor is it a question about
PostgreSQL internals. ]

Nicolas

--
A. Because it breaks the logical sequence of discussion.
Q. Why is top posting bad?