用命令行工具 怎么修改的mysql一些配置？

default-character-set =utf8
default-collation =utf8_general_ci
character-set-server =utf8
collation-server =utf8_general_ci
#init-connect ='SET NAMES utf8'像这样的字符集  我的mysql上默认是 gb2312  ，我想改成 utf8，用那个mysql自带的黑窗口 ，怎么修改这些属性值？谢谢~

解决方案 »

  1.   

    安装后
    /etc/init.d/mysql start (stop) 为启动和停止服务器
    /etc/mysql/ 主要配置文件所在位置 my.cnf
    /var/lib/mysql/ 放置的是数据库表文件夹，这里的mysql相当于windows下mysql的date文件夹启动mysql后，以root登录mysql
    isher@isher-ubuntu:~$ mysql -u root
    >show variables like 'character%'; #执行编码显示
    +--------------------------+----------------------------+
    | 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 | /usr/share/mysql/charsets/ |
    +--------------------------+----------------------------+在某些时候，我们续要修改mysql默认数据库的编码，以保证某些迁移的程序可以正常显示，编辑my.cnf文件进行编码修改,windows可以直接用Ｍysql Server Instance Config Wizard 进行设置在linux下修改３个my.cnf的１个/etc/mysql/my.cnf文件找到客户端配置[client] 在下面添加
    default-character-set=utf8 默认字符集为utf8
    在找到[mysqld] 添加
    default-character-set=utf8 默认字符集为utf8
    init_connect='SET NAMES utf8' （设定连接mysql数据库时使用utf8编码，以让mysql数据库为utf8运行）修改好后，重新启动mysql 即可，查询一下show variables like 'character%';
    +--------------------------+----------------------------+
    | Variable_name | Value |
    +--------------------------+----------------------------+
    | character_set_client | utf8 |
    | character_set_connection | utf8 |
    | character_set_database | utf8 |
    | character_set_filesystem | binary |
    | character_set_results | utf8 |
    | character_set_server | utf8 |
    | character_set_system | utf8 |
    | character_sets_dir | /usr/share/mysql/charsets/ |
    +--------------------------+----------------------------+
    此方法用于标准mysql版本同样有效，对于/etc/my.cnf文件，需要从mysql/support-files的文件夹cp my-large.cnf一份到/etc/my.cnf
     
      

  2.   

    但这样的修改只能修改了当前SESSION， 或者当前进程的，当MYSQL服务重启后MYSQL还是会从INI文件中去取参数。
      

  3.   


    mysql> show variables like '%char%';
    +--------------------------+---------------------------+
    | Variable_name            | Value                     |
    +--------------------------+---------------------------+
    | character_set_client     | gb2312                    |
    | character_set_connection | gb2312                    |
    | character_set_database   | utf8                      |
    | character_set_filesystem | binary                    |
    | character_set_results    | gb2312                    |
    | character_set_server     | utf8                      |
    | character_set_system     | utf8                      |
    | character_sets_dir       | D:\mysql6\share\charsets\ |
    +--------------------------+---------------------------+
    8 rows in set (0.00 sec)mysql> set names utf8;
    Query OK, 0 rows affected (0.00 sec)mysql> show variables like '%char%';
    +--------------------------+---------------------------+
    | Variable_name            | Value                     |
    +--------------------------+---------------------------+
    | character_set_client     | utf8                      |
    | character_set_connection | utf8                      |
    | character_set_database   | utf8                      |
    | character_set_filesystem | binary                    |
    | character_set_results    | utf8                      |
    | character_set_server     | utf8                      |
    | character_set_system     | utf8                      |
    | character_sets_dir       | D:\mysql6\share\charsets\ |
    +--------------------------+---------------------------+
    8 rows in set (0.00 sec)