匹配IP地址和IP范围？ [英] Matching an IP address with an IP range?

问题描述

我有一个MySQL表设置如下：

I have a MySQL table setup as follows:

+---------------+-------------+------+-----+---------+----------------+
| 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

where, ipaddress_s and ipaddress_e look something like: 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的行IP地址？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）：

Now is there a way I can actually get the row that contains a given IP address? For instance, given the IP address: "4.100.159.5", I want the above row to be returned. So I am trying for a query that looks something like this (but of course this is wrong because in the following I am considering IPs as strings):

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

有什么建议吗？

推荐答案

INET_ATON（expr）会将ip地址字符串更改为可以使用的数字地址用于比较。

INET_ATON(expr) will change an ip address string into a numeric address that you can use for comparison.

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')

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