IPV4_STRING_TO_NUM_OR_DEFAULT

SinceVersion dev

IPV4_STRING_TO_NUM_OR_DEFAULT

description

Syntax

BIGINT IPV4_STRING_TO_NUM_OR_DEFAULT(VARCHAR ipv4_string)

获取包含 IPv4 地址的字符串，格式为 A.B.C.D（点分隔的十进制数字）。返回一个 BIGINT 数字，表示相应的大端 IPv4 地址。

notice

如果输入字符串不是有效的 IPv4 地址或者NULL，将返回0

example

1. mysql> select ipv4_string_to_num_or_default('192.168.0.1');
2. +----------------------------------------------+
3. | ipv4_string_to_num_or_default('192.168.0.1') |
4. +----------------------------------------------+
5. | 3232235521                                   |
6. +----------------------------------------------+
7. 1 row in set (0.01 sec)

9. mysql> select str, ipv4_string_to_num_or_default(str) from ipv4_str;
10. +-----------------+------------------------------------+
11. |str              | ipv4_string_to_num_or_default(str) |
12. +-----------------+------------------------------------+
13. | 0.0.0.0         | 0                                  |
14. | 127.0.0.1       | 2130706433                         |
15. | 255.255.255.255 | 4294967295                         |
16. | invalid         | 0                                  |
17. +-----------------+------------------------------------+
18. 4 rows in set (0.01 sec)

20. mysql> select addr_src, ipv4_string_to_num_or_default(addr_src) from ipv4_string_test where addr_src is null;
21. +----------+-----------------------------------------+
22. | addr_src | ipv4_string_to_num_or_default(addr_src) |
23. +----------+-----------------------------------------+
24. | NULL     |                                       0 |
25. +----------+-----------------------------------------+
26. 1 row in set (0.09 sec)

keywords

IPV4_STRING_TO_NUM_OR_DEFAULT, IP