MYSQL两个数据库字符集保持一致问题

 参考这篇文章：https://lzw.me/a/mysql-charset.html

还有一篇官方文档:https://dev.mysql.com/doc/refman/5.7/en/charset.html

show variables like "%char%";
set names utf8;
set character_set_server = utf8;