Mariadb字符集
如果不设置字符集，可以查看mariadb的字符集的默认设置是latin1。
如下命令,查看Mariadb的默认配置:
[root@oradb ~]# /usr/local/mysql/bin/mysqld --verbose --help |grep character-set-server
2019-09-23 16:10:05 0 [Note] Plugin 'FEEDBACK' is disabled.
-C, --character-set-server=name
character-set-server latin1
修改Mariadb的字符集为utf8，国际统一标准，配置如下:
[root@oradb ~]# vi /etc/my.cnf
[mysqld]
datadir=/u01/data/
socket=/tmp/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
character-set-server = utf8
[mysqld_safe]
log-error=/u01/data/mysqld.log
pid-file=/tmp/mysqld.pid
重启服务，如下:
[root@oradb ~]# service mysqld restart
最终，服务器统一为utf8,如下:
[root@oradb ~]# mysql -uroot -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or g.
Your MariaDB connection id is 9
Server version: 10.3.18-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.
MariaDB [(none)]> 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/local/mysql/share/charsets/ |
+--------------------------+----------------------------------+
8 rows in set (0.001 sec)