The following bug has been logged online:
Bug reference: 1367
Logged by: Hong Yuan
Email address: [EMAIL PROTECTED]
PostgreSQL version: 8.0
Operating system: Windows XP Chinese Simplified
Description: Unique constraint fails with some values
Details:
I found that the unique constraint fails sometimes when the varchar column
contain some specific Chinese characters. Here is an example:
CREATE TABLE test
(
col1 varchar(10),
CONSTRAINT col1 UNIQUE (col1)
)
WITHOUT OIDS;
insert into test values('大');
insert into test values('大');
insert into test values('大');
While the second and third inserts should fail, they do not. With some other
Chinese characters, the constraint is observed.
The character '大' has utf-8 encoding '\xe5\xa4\xa7'.
The database is created with UNICODE encoding. The problem is present with
version 8.0.0-rc2.
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