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Your MySQL connection id is 3
Server version: 5.6.10 MySQL Community Server (GPL)
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mysql>
完全没有问题。
另外，mysql默认的root用户是没有设置密码的，我们可以修改root用户密码，方法如下：
1、直接在cmd命令行，不需要进入mysql
mysqladmin -u root password '新密码'
2、在mysql中，一定要连接到某个数据库
mysql> use mysql
Database changed
mysql> update user set password=password('新密码') where user='root';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)