日期：2012-06-02 15:05:00 来源：本站整理

操纵mysql的inet_aton()和inet_ntoa()函数存储IP地址的办法分享[MySQL防范]

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　　本文“操纵mysql的inet_aton()和inet_ntoa()函数存储IP地址的办法分享[MySQL防范]”是由七道奇为您精心收集，来源于网络转载，文章版权归文章作者所有，本站不对其观点以及内容做任何评价，请读者自行判断，以下是其具体内容：
mysql> create table jackbillow (ip int unsigned, name char(1));
Query OK, 0 rows affected (0.02 sec)

mysql> insert into jackbillow values(inet_aton('192.168.1.200'), 'A'), (inet_aton('200.100.30.241'), 'B');
Query OK, 2 rows affected (0.00 sec)
Records: 2 Duplicates: 0 Warnings: 0

mysql> insert into jackbillow values(inet_aton('24.89.35.27'), 'C'), (inet_aton('100.200.30.22'), 'D');
Query OK, 2 rows affected (0.00 sec)
Records: 2 Duplicates: 0 Warnings: 0

mysql> select * from jackbillow;
+------------+------+
| ip | name |
+------------+------+
| 3232235976 | A |
| 3362004721 | B |
| 408494875 | C |
| 1690836502 | D |
+------------+------+
4 rows in set (0.00 sec)

mysql> select * from jackbillow where ip = inet_aton('192.168.1.200');
+------------+------+
| ip | name |
+------------+------+
| 3232235976 | A |
+------------+------+
1 row in set (0.00 sec)

mysql> select inet_ntoa(ip) from jackbillow;
+----------------+
| inet_ntoa(ip) |
+----------------+
| 192.168.1.200 |
| 200.100.30.241 |
| 24.89.35.27 |
| 100.200.30.22 |
+----------------+
4 rows in set (0.00 sec)

当前很多利用都实用字符串char(15)来存储IP地址（占用16个字节）,操纵inet_aton()和inet_ntoa()函数,来存储IP地址效率很高,实用unsigned int 便可以满意需求,不需求利用bigint,只需求4个字节,节俭存储空间,同时效率也高很多.

假如IP列有索引,可以利用下面方法查询:

mysql> select inet_aton('100.200.30.22');
+----------------------------+
| inet_aton('100.200.30.22') |
+----------------------------+
| 1690836502 |
+----------------------------+
1 row in set (0.00 sec)

mysql> select * from jackbillow where ip=1690836502;
+------------+------+
| ip | name |
+------------+------+
| 1690836502 | D |
+------------+------+
1 row in set (0.00 sec)

mysql> select inet_ntoa(ip),name from jackbillow where ip=1690836502;
+---------------+------+
| inet_ntoa(ip) | name |
+---------------+------+
| 100.200.30.22 | D |
+---------------+------+
1 row in set (0.00 sec)

关于LIKE操作,可以利用下面方法:

mysql> select inet_ntoa(ip) from jackbillow;
+----------------+
| inet_ntoa(ip) |
+----------------+
| 192.168.1.200 |
| 200.100.30.241 |
| 24.89.35.27 |
| 100.200.30.22 |
| 192.168.1.100 |
| 192.168.1.20 |
| 192.168.2.20 |
+----------------+
7 rows in set (0.00 sec)

mysql> select inet_aton('192.168.1.0');
+--------------------------+
| inet_aton('192.168.1.0') |
+--------------------------+
| 3232235776 |
+--------------------------+
1 row in set (0.00 sec)

mysql> select inet_aton('192.168.1.255');
+----------------------------+
| inet_aton('192.168.1.255') |
+----------------------------+
| 3232236031 |
+----------------------------+
1 row in set (0.00 sec)

mysql> select inet_ntoa(ip) from jackbillow where ip between 3232235776 and 3232236031;
+---------------+
| inet_ntoa(ip) |
+---------------+
| 192.168.1.200 |
| 192.168.1.100 |
| 192.168.1.20 |
+---------------+
3 rows in set (0.00 sec)

mysql> select inet_ntoa(ip) from jackbillow where ip between inet_aton('192.168.1.0') and inet_aton('192.168.1.255');
+---------------+
| inet_ntoa(ip) |
+---------------+
| 192.168.1.200 |
| 192.168.1.100 |
| 192.168.1.20 |
+---------------+
3 rows in set (0.00 se
　　以上是“操纵mysql的inet_aton()和inet_ntoa()函数存储IP地址的办法分享[MySQL防范]”的内容，如果你对以上该文章内容感兴趣，你可以看看七道奇为您推荐以下文章：

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