create table temp ( big5 char(2) ) character set big5 collate big5_bin; insert into temp ( big5 ) values ( 0x9f54 ); insert into temp ( big5 ) values ( 0x9f53 ); The 2nd query will report duplicated key. How should I fix the problem? -- .~. Might, Courage, Vision, SINCERITY. http://www.linux-sxs.org / v \ Simplicity is Beauty! May the Force and Farce be with you! /( _ )\ (Ubuntu 6.10) Linux 2.6.20.4 ^ ^ 15:46:01 up 2:58 1 user load average: 2.32 1.73 1.48 news://news.3home.net news://news.hkpcug.org news://news.newsgroup.com.hk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php