匹配IP地址与IP范围？

Question

我有一个MySQL表设置如下:

+---------------+-------------+------+-----+---------+----------------+
| Field         | Type        | Null | Key | Default | Extra          |
+---------------+-------------+------+-----+---------+----------------+
| ipaddress_s   | varchar(15) | YES  | MUL | NULL    |                | 
| ipaddress_e   | varchar(16) | YES  |     | NULL    |                | 
+---------------+-------------+------+-----+---------+----------------+

其中,ipaddress_s和ipaddress_e类似于:4.100.159.0-4.100.159.255

现在有一种方法可以实际获得包含给定IP地址的行吗？例如,给定IP地址:"4.100.159.5",我希望返回上面的行.所以我正在尝试看起来像这样的查询(但当然这是错误的,因为在下面我将IP视为字符串):

SELECT * FROM ranges WHERE ipaddress_s<"4.100.159.5" AND ipaddress_e>"4.100.159.5"

有什么建议？

Answer 1

INET_ATON(expr)会将ip地址字符串更改为可用于比较的数字地址.

http://dev.mysql.com/doc/refman/5.0/en/miscellaneous-functions.html#function_inet-aton

SELECT * FROM ranges WHERE INET_ATON(ipaddress_s)<INET_ATON('4.100.159.0') AND INET_ATON(ipaddress_e)>INET_ATON('4.100.159.5')