TO_IPV4_OR_DEFAULT
IPV4 TO_IPV4_OR_DEFAULT(STRING ipv4_str)
Same as to_ipv4, but if the IPv4 address has an invalid format, it returns 0.0.0.0 (0 as IPv4).
If input is NULL, return 0.0.0.0 (0 as IPv4).
mysql> select to_ipv4_or_default('.'); +-------------------------+ | to_ipv4_or_default('.') | +-------------------------+ | 0.0.0.0 | +-------------------------+ mysql> select to_ipv4_or_default(NULL); +--------------------------+ | to_ipv4_or_default(NULL) | +--------------------------+ | 0.0.0.0 | +--------------------------+
TO_IPV4_OR_DEFAULT, IP