mysql 修改密码，版本不一样 多多次尝试

Your MysqL connection id is 1
Server version: 5.6.50-log Source distribution

copyright (c) 2000, 2020, 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> use MysqL;
Database changed
MysqL> UPDATE MysqL.user SET Password=PASSWORD('123456') WHERE User='root';
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4  Changed: 4  Warnings: 0

MysqL> FLUSH PRIVILEGES
    -> ;
Query OK, 0 rows affected (0.00 sec)

MysqL> exit
Bye