Mysql編碼設置

mysql> show variables like 'collation_%';  
mysql> show variables like 'character_set_%';

缺省是latin1編碼，會導致中文亂碼。
修改庫的編碼：
mysql> alter database db_name character set utf8;
修改表的編碼：

mysql> ALTER TABLE table_name CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci; 

可以在mysql中設置編碼，單個設置

mysql> set character_set_connection=utf8;
mysql> set character_set_database=utf8;
mysql> set character_set_results=utf8;
mysql> set character_set_server=utf8;

但重啓後會失效。

可以修改配置文件：

[root@Hadoop48 ~]# vi /etc/my.cnf  
[mysql]  
default-character-set=utf8  
[client]  
default-character-set=utf8  
[mysqld]  
default-character-set=utf8  
character_set_server=utf8  
init_connect='SET NAMES utf8' 

重啓mysql，這樣確保缺省編碼是utf8