應用mysql的inet_aton()和inet_ntoa()函數存儲IP地址的辦法分享。本站提示廣大學習愛好者：（應用mysql的inet_aton()和inet_ntoa()函數存儲IP地址的辦法分享）文章只能為提供參考，不一定能成為您想要的結果。以下是應用mysql的inet_aton()和inet_ntoa()函數存儲IP地址的辦法分享正文
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)
以後許多運用都實用字符串char(15)來存儲IP地址（占用16個字節），應用inet_aton()和inet_ntoa()函數，來存儲IP地址效力很高，實用unsigned int 便可以知足需求，不須要應用bigint，只須要4個字節，節儉存儲空間，同時效力也高許多。
假如IP列有索引，可使用上面方法查詢：
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)
關於LIKE操作，可使用上面方法：
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 sec)
