Mysql 中常用技巧查询手册

原文链接：http://blog.csdn.net/johnnycode/article/details/44678479

1、查看 Mysql 配置文件加载顺序

# mysqld --verbose --help|grep -A 1 'Default options'
2015-03-27 16:19:41 4099 [Note] Plugin 'FEDERATED' is disabled.
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf /usr/local/mysql/my.cnf ~/.my.cnf

2、查看服务器字符集

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       | /usr/local/mysql-5.6.23-osx10.8-x86_64/share/charsets/ |
+--------------------------+--------------------------------------------------------+

3、设置服务器和客户端连接字符集

永久性修改：修改 my.cnf 文件

[mysqld]
character-set-server=utf8
[client]
default-character-set=utf8