IPV4_STRING_TO_NUM_OR_NULL

Description

Syntax

BIGINT IPV4_STRING_TO_NUM_OR_NULL(VARCHAR ipv4_string)

BIGINT INET_ATON(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，将返回 NULL。该函数有一个别名为 INET_ATON。

Example

mysql> select ipv4_string_to_num_or_null('192.168.0.1'); 
+-------------------------------------------+ 
| ipv4_string_to_num_or_null('192.168.0.1') | 
+-------------------------------------------+ 
| 3232235521                                | 
+-------------------------------------------+ 
1 row in set (0.01 sec)

mysql> select str, ipv4_string_to_num_or_null(str) from ipv4_str; 
+-----------------+---------------------------------+ 
|str              | ipv4_string_to_num_or_null(str) | 
+-----------------+---------------------------------+ 
| 0.0.0.0         | 0                               | 
| 127.0.0.1       | 2130706433                      | 
| 255.255.255.255 | 4294967295                      | 
| invalid         | NULL                            | 
+-----------------+---------------------------------+ 
4 rows in set (0.01 sec)

Keywords

IPV4_STRING_TO_NUM_OR_NULL, INET_ATON, IP

IPV4_STRING_TO_NUM_OR_NULL​

Description​

Syntax​

Notice​

Example​

Keywords​