IPV6_STRING_TO_NUM_OR_DEFAULT

SinceVersion dev

IPV6_STRING_TO_NUM_OR_DEFAULT

description

Syntax

VARCHAR IPV6_STRING_TO_NUM_OR_DEFAULT(VARCHAR ipv6_string)

IPv6NumToString 的反向函数，它接受一个 IP 地址字符串并返回二进制格式的 IPv6 地址。 如果输入字符串包含有效的 IPv4 地址，则返回其等效的 IPv6 地址。

notice

如果输入非法的IP地址，会返回0

example

  1. mysql> select hex(ipv6_string_to_num_or_default('1111::ffff'));
  2. +--------------------------------------------------+
  3. | hex(ipv6_string_to_num_or_default('1111::ffff')) |
  4. +--------------------------------------------------+
  5. | 1111000000000000000000000000FFFF                 |
  6. +--------------------------------------------------+
  7. 1 row in set (0.01 sec)
  9. mysql> select hex(ipv6_string_to_num_or_default('192.168.0.1'));
  10. +---------------------------------------------------+
  11. | hex(ipv6_string_to_num_or_default('192.168.0.1')) |
  12. +---------------------------------------------------+
  13. | 00000000000000000000FFFFC0A80001                  |
  14. +---------------------------------------------------+
  15. 1 row in set (0.02 sec)
  17. mysql> select hex(ipv6_string_to_num_or_default('notaaddress'));
  18. +---------------------------------------------------+
  19. | hex(ipv6_string_to_num_or_default('notaaddress')) |
  20. +---------------------------------------------------+
  21. | 00000000000000000000000000000000                  |
  22. +---------------------------------------------------+
  23. 1 row in set (0.02 sec)

keywords

IPV6_STRING_TO_NUM_OR_DEFAULT, IP