新装的MySQL没有密码怎么办

新装的mysql没有密码怎么办

[root@localhost log]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 21
Server version: 8.0.15 MySQL Community Server - GPL

Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> set password='123456';
Query OK, 0 rows affected (0.00 sec)
//或者
mysql> ALTER user 'root'@'localhost' IDENTIFIED BY '123456';

2.新版mysql（8.0+）连接数据库出现2059

原因：MySQL的8.0.*版本使用的是caching_sha2_password验证方式，而Navicat Premium 12还不支持该种方式

解决：

在数据库命令行中输入：ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';

　

重新连接就OK

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