参考：https://www.runoob.com/note/38476
在命令行登录mysql后执行以下命令
mysql> use mysql;
mysql> update user set password=password('123') where user='root' and host='localhost';
mysql> flush privileges;
参考：https://www.runoob.com/note/38476
在命令行登录mysql后执行以下命令
mysql> use mysql;
mysql> update user set password=password('123') where user='root' and host='localhost';
mysql> flush privileges;
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