本例子環境為centos 7.4 yum安裝 mariadb 5.5.56

環境準備：創建latin1編碼的庫，表，數據

mysql --default-character-set=latin1

show variables like ‘char%‘;

create database latin;

show create database latin;

use latin

create table student (id int,name varchar(10),age int,class varchar(20));

insert into student values (1,‘張三‘,18,‘數學‘);

insert into student values (2,‘李四‘,28,‘語文‘);

show create table student;

select * from student;

正式開始：

1備份數據

mysqldump --default-character-set=latin1 latin >latin.sql

2修改服務端配置文件

vi /etc/my.cnf 在[mysqld]段添加

character_set_server = utf8

3重新啟動服務生效

systemctl stop mariadb

systemctl start mariadb

4更改字符編碼為utf8

sed -n s/latin1/utf8/gp latin.sql

sed -i s/latin1/utf8/g latin.sql

5創建新庫導入數據

mysql --default-character-set=utf8

show variables like ‘char%‘;

create database utf8;

show create database utf8;

use utf8

source /root/latin.sql

6驗證

select * from student;

mysql 拉丁1 轉換成 utf8