Mysql 中存储IP地址

mysql> create table hosts( 
 -> `id` int(8) not null auto_increment,
 -> `ip` int unsigned not null,
 -> `hostname` varchar(30) not null,
 -> `desc` varchar(100) , 
 -> PRIMARY KEY(`id`)) ENGINE=InnoDB;
Query OK, 0 rows affected (0.03 sec)

mysql> desc hosts
 -> ;
+----------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+----------+------------------+------+-----+---------+----------------+
| id | int(8) | NO | PRI | NULL | auto_increment |
| ip | int(10) unsigned | NO | | NULL | |
| hostname | varchar(30) | NO | | NULL | |
| desc | varchar(100) | YES | | NULL | |
+----------+------------------+------+-----+---------+----------------+
4 rows in set (0.00 sec)

mysql> insert into hosts (`ip`,`hostname`,`desc`) values (inet_aton('192.168.1.106'),'test','this is test host.');
Query OK, 1 row affected (0.03 sec)

mysql> select * from hosts
 -> ;
+----+------------+----------+--------------------+
| id | ip | hostname | desc |
+----+------------+----------+--------------------+
| 1 | 3232235882 | test | this is test host. |
+----+------------+----------+--------------------+
1 row in set (0.00 sec)

mysql> select inet_ntoa(ip) from hosts;
+---------------+
| inet_ntoa(ip) |
+---------------+
| 192.168.1.106 |
+---------------+
1 row in set (0.00 sec)