Hi listers
mysql server here is
mysql-server-5.1.48-2.fc13.x86_64
this morning i created a message with a literal string in chinese in it.
the messages in the application i used are stored in a mysql database,
when you submit them, like in a "sent" folder.
With this chinese literal in it, i, however, got
ERROR 1271 (HY000): Illegal mix of collations for operation 'concat'
when i sent the message.
without the chinese literal, the message was stored in the mysql db
correctly.
i, then, changed the connection names to utf8 and collation to utf8_bin
and then the session parameters looked like:
mysql> set names "utf8";
Query OK, 0 rows affected (0.00 sec)
mysql> set collation_connection = "utf8_bin";
Query OK, 0 rows affected (0.00 sec)
mysql> show session variables like "character_set%";
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)
mysql> show session variables like "collation%";
+----------------------+-------------------+
| Variable_name | Value |
+----------------------+-------------------+
| collation_connection | utf8_bin |
| collation_database | latin1_swedish_ci |
| collation_server | latin1_swedish_ci |
+----------------------+-------------------+
3 rows in set (0.00 sec)
mysql>
i thought, if you set the collation_connection to utf8_bin, you may send
fairly everything to mysql.
but still, when i tried to concat the new string (including the chinese
characers) i got:
mysql> update suomi_contacts2 set history = concat(now(), ' ', ''
,'concerne: utf-8-bin collation for chinese charset',' ', 'Hoi
Suomixer,\r\n\r\nIf you\'re careful enough, nothing bad or good will
ever happen to you.\r\n> 葛斯克 愛德華 / 台北市八德路四段\r\n>\r\n\r\n
\r\nsuomi\r\n', ' ', '----------------------- ', history) where counter
= 1127;
ERROR 1271 (HY000): Illegal mix of collations for operation 'concat'
Question: What did i miss? what do i have to change?
Thanks in advance
suomi
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