1、檢查默認安裝的mysql的字符集
mysql> show variables like '%char%';
+--------------------------+-----------------------------------------------------------+
| Variable_name | Value |
+--------------------------+-----------------------------------------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
# For advice on how to change settings please see
| character_set_results | utf8 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | /usr/local/mysql-5.6.40-macos10.13-x86_64/share/charsets/ |
+--------------------------+-----------------------------------------------------------+
8 rows in set (0.00 sec)
character_set_database和character_set_server依然是latin1的字符集，也就是說mysql后續創建的表都是latin1字符集的，不是utf8，會造成一些麻煩。所以有必要修改my.cnf。
在修改my.cnf之前一定要關閉mysql進程，不然會遇到mysql的sock不能連接的問題。
2、關閉mysqld后台進程
- 系統偏好設置里面控制mysqld，避免了去找mysqld安裝位置的麻煩。
點擊 Stop MySQL Server
3、修改mysql配置文件/etc/my.cnf
sudo cp /usr/local/mysql/support-files/my-default.cnf /etc/my.cnf
sudo vim /etc/my.cnf
[client]部分加入：
default-character-set=utf8
[mysqld]部分加入：
character-set-server=utf8
修改完成之后，啟動MySQL
4、檢查結果
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-5.6.40-macos10.13-x86_64/share/charsets/ |
+--------------------------+-----------------------------------------------------------+
8 rows in set (0.00 sec)