WAMP安装完之后，root的密码默认为空，我想修改这个密码，于是我做了下面操作:
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.03 sec)
mysql> use mysql;
Database changed
mysql> select host,user,password from user;
+-----------+-------+-------------------------------------------+
| host | user | password |
+-----------+-------+-------------------------------------------+
| localhost | root | |
| 127.0.0.1 | root | |
| ::1 | root | |
| localhost | | |
| localhost | test1 | *94BDCEBE19083CE2A1F959FD02F964C7AF4CFC29 |
+-----------+-------+-------------------------------------------+
5 rows in set (0.02 sec)
mysql> update user set password='test' where user='root';
Query OK, 3 rows affected (0.06 sec)
Rows matched: 3 Changed: 3 Warnings: 0
mysql> flush privileges
-> ;
Query OK, 0 rows affected (0.17 sec)
mysql> quit
然后我重启WAMP所有服务，打开Mysql 控制台，
Enter password: <RETURN> //输入的回车
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.8-log MySQL Community Server (GPL)
Copyright (c) 2000, 2010, 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> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| test |
+--------------------+ //Mysql和performance_schema 这2个数据库怎么给drop掉了啊？
2 rows in set (0.00 sec)
我在网上看到说有的是在phpMyAdmin的界面上去修改的话，会有这样的情况发生。现在我不管是在控制台还是在页面上，都碰到这样问题。 WAMP重装了好几遍了，都是这样。被搞疯了啊，这到底是什么原因啊？
--
FROM 124.126.245.*