臨時修改mysql數據庫編碼

mysql> show variables like 'character_set_%';
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id:    4
Current database: homesite

+--------------------------+----------------------------+
| Variable_name            | Value                      |
+--------------------------+----------------------------+
| character_set_client     | latin1                     |
| character_set_connection | latin1                     |
| character_set_database   | latin1                     |
| character_set_filesystem | binary                     |
| character_set_results    | latin1                     |
| character_set_server     | utf8                       |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+

看到沒，Value全是latin1的，咱得把它改成utf8。

通過MySQL命令行修改:

mysql> set character_set_client=utf8;
Query OK, 0 rows affected (0.00 sec)

mysql> set character_set_connection=utf8;
Query OK, 0 rows affected (0.00 sec)

mysql> set character_set_database=utf8;
Query OK, 0 rows affected (0.00 sec)

mysql> set character_set_results=utf8;
Query OK, 0 rows affected (0.00 sec)

mysql> set character_set_server=utf8;
Query OK, 0 rows affected (0.00 sec)

mysql> set character_set_system=utf8;
Query OK, 0 rows affected (0.01 sec)

還是不行！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！還得改表的編碼。

mysql> show create table COMMENTS;
+----------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table    | Create Table                                                                                                                                                                                                                                                                                   |
+----------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| COMMENTS | CREATE TABLE `COMMENTS` (
  `ID` bigint(20) NOT NULL AUTO_INCREMENT,
  `USER_ID` bigint(20) DEFAULT NULL,
  `COMMENTS` varchar(500) DEFAULT NULL,
  `EXT_FLD` varchar(200) DEFAULT NULL,
  PRIMARY KEY (`ID`)
) ENGINE=MyISAM AUTO_INCREMENT=10 DEFAULT CHARSET=latin1 COMMENT='评论' |
+----------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

mysql> alter table COMMENTS convert to character set utf8;
Query OK, 9 rows affected (0.02 sec)
Records: 9  Duplicates: 0  Warnings: 0

mysql> show create table COMMENTS;
+----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table    | Create Table                                                                                                                                                                                                                                                                                 |
+----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| COMMENTS | CREATE TABLE `COMMENTS` (
  `ID` bigint(20) NOT NULL AUTO_INCREMENT,
  `USER_ID` bigint(20) DEFAULT NULL,
  `COMMENTS` varchar(500) DEFAULT NULL,
  `EXT_FLD` varchar(200) DEFAULT NULL,
  PRIMARY KEY (`ID`)
) ENGINE=MyISAM AUTO_INCREMENT=10 DEFAULT CHARSET=utf8 COMMENT='评论' |

+----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

OK