SQL:二进制到IP地址 [英] SQL: Binary to IP Address

问题描述

我正在尝试将二进制IP转换为人类可读的IP

I'm trying to convert A binary IP to a human-readable IP

SELECT HEX( `ip_bin` ) FROM `log_metadata`

给我 4333D26E000000000000000000000000

还有

SELECT INET_NTOA(0x4333D26E)

给我67.51.210.110

所以我尝试了:

SELECT
  SUBSTRING( CONVERT(HEX(`ip_bin`), CHAR(32)), 1, 8 ) AS `A`
, INET_NTOA( 
  SUBSTRING( CONVERT(HEX(`ip_bin`), CHAR(32)), 1, 8 ) 
                                                     ) AS `B`
, INET_NTOA(hex(`ip_bin`))  AS `C`
, INET_NTOA(`ip_bin`)       AS `D`
FROM `log_metadata`

但我只能得到

+----------+------------+------------+---------+
| A        | B          | C          | D       |
+----------+------------+------------+---------+
| 4333D26E | 0.0.16.237 | 0.0.16.237 | 0.0.0.0 |
+----------+------------+------------+---------+

有什么建议吗?

推荐答案

mysql> select inet_ntoa(conv('4333d26e', 16, 10));
+-------------------------------------+
| inet_ntoa(conv('4333d26e', 16, 10)) |
+-------------------------------------+
| 67.51.210.110                       |
+-------------------------------------+
1 row in set (0.00 sec)

检查它是否也可以工作=)

Check if it works there too =)

问题在于，inet_ntoa似乎是从十进制 strings数字表示形式而不是十六进制数字或十六进制integers解析的.比较:

The problem is that inet_ntoa seems to parse from decimal strings number representation, not hexadecimal ones, or from hexadecimal integers. Compare:

mysql> select inet_ntoa(0x4333d26e);
+-----------------------+
| inet_ntoa(0x4333d26e) |
+-----------------------+
| 67.51.210.110         |
+-----------------------+
1 row in set (0.02 sec)

mysql> select inet_ntoa('0x4333d26e');
+-------------------------+
| inet_ntoa('0x4333d26e') |
+-------------------------+
| 0.0.0.0                 |
+-------------------------+
1 row in set, 1 warning (0.00 sec)

编辑

这更简单，而且似乎也可以工作:

Edit

This is simpler and seems to work too:

SELECT INET_NTOA(CONV(ip_bin, 2, 10)) FROM log_metadata

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