windows平台mysql密码设置

登录mysql默认没有指定账号

查看默认账号是谁

select user();

mysql> select user();
+----------------+
| user() |
+----------------+
| ODBC@localhost |
+----------------+
1 row in set (0.03 sec)

默认账号是 ODBC

切换mysql账号

-u 指定mysql账号

-p 指定mysql密码

mysql -uroot -p

mysql> select user();
+----------------+
| user() |
+----------------+
| root@localhost |
+----------------+
1 row in set (0.06 sec)

登录设置密码

初始状态下，管理员root，密码为空，默认只允许从本机登录localhost

设置初始密码

mysqladmin -uroot password "123"        设置初始密码 由于原密码为空，因此-p可以不用

也可以设置-p

mysqladmin -uroot -p password "123"

C:\Users\Administrator.QH-20170325TNQR>mysqladmin -uroot -p password "123"
Enter password:
Warning: Using a password on the command line interface can be insecure.

C:\Users\Administrator.QH-20170325TNQR>
C:\Users\Administrator.QH-20170325TNQR>
C:\Users\Administrator.QH-20170325TNQR>mysql -uroot -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password:
O)

C:\Users\Administrator.QH-20170325TNQR>mysql -uroot -p123
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.6.41 MySQL Community Server (GPL)

Copyright (c) 2000, 2018, 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>

修改mysql密码

mysqladmin -uroot -p"123" password "456"        修改mysql密码,因为已经有密码了，所以必须输入原密码才能设置新密码