MySQL 默认字符集

MySQL 默认的字符集是 latin1,通常跟我们的中文会打架,导致读写异常或乱码,而我们需要的字符集是 utf-8.

MySQL 字符集的查看

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       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.01 sec)

可以查大部分都是 latin1.

MySQL 字符集的修改

1. 设置字符集相关的所有变量为 utf8

set character_set_client=utf8
set character_set_connection=utf8
set character_set_database=utf8
set character_set_results=utf8
set character_set_server=utf8
set character_set_system=utf8

这样设置完,新创建的数据库字符集还是 latin1.
2. 新建数据库的时候,显式指定字符集为 utf8.
3. 添加或修改 my.conf 中的默认字符集为 utf8.

参考文档:

• Change MySQL default character set to UTF-8 in my.cnf?