修改mysql默认字符集的方法

mysql默认字符集的修改方法未必人人都会，下文就介绍了两个最常见的修改mysql默认字符集的方法，供您参考学习。

mysql默认字符集能否进行修改呢？答案是肯定的，下面就将教您两种修改mysql默认字符集的方法，希望对您学习mysql默认字符集方面能有所启迪。

(1) 最简单的修改方法，就是修改mysql的my.ini文件中的字符集键值，

如 default-character-set = utf8
character_set_server = utf8

修改完后，重启mysql的服务，service mysql restart

使用 mysql> SHOW VARIABLES LIKE 'character%'; 查看，发现数据库编码均已改成utf8

mysql> SHOW VARIABLES LIKE 'character%';

+--------------------------+---------------------------------+

| 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 | latin1 |

| character_set_system | utf8 |

| character_sets_dir | D:"mysql-5.0.37"share"charsets" |

+--------------------------+---------------------------------+

mysql> SHOW VARIABLES LIKE 'collation_%';

+----------------------+-----------------+

| Variable_name | Value |

+----------------------+-----------------+

| collation_connection | utf8_general_ci |

| collation_database | utf8_general_ci |

| collation_server | utf8_general_ci |

+----------------------+-----------------+

(2) 还有一种修改mysql默认字符集的方法，就是使用mysql的命令

mysql> SET character_set_client = utf8 ;

mysql> SET character_set_connection = utf8 ;

mysql> SET character_set_database = utf8 ;

mysql> SET character_set_results = utf8 ;

mysql> SET character_set_server = utf8 ;

mysql> SET collation_connection = utf8 ;

mysql> SET collation_database = utf8 ;

mysql> SET collation_server = utf8 ;

一般就算设置了表的mysql默认字符集为utf8并且通过UTF-8编码发送查询，你会发现存入数据库的仍然是乱码。问题就出在这个connection连接层上。解决方法是在发送查询前执行一下下面这句：

SET NAMES 'utf8';

它相当于下面的三句指令：

SET character_set_client = utf8;

SET character_set_results = utf8;

SET character_set_connection = utf8;