解决navicat连接mysql数据库报Client does not support...
MySQL 8.0 的加密方式改变了，加密规则是caching_sha2_password，MySQL 8.0之前的加密规则是caching_sha2_password。解决办法：1.升级Navicat，2.把mysql用户登录密码加密规则还原成mysql_native_password。
步骤：
1.登录：mysql -u root -p
Enter password: ******
2.use mysql;
Database changed
mysql> select user,host from user;
3.ALTER USER 'root'@'%' IDENTIFIED BY '123456' PASSWORD EXPIRE NEVER;
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123456';
flush privileges;