IS_IPV6() function in MySQL

IS_IPV6() : This function in MySQL is used to check whether a specified string is a valid IPv6 address. If it is a valid IPv6 address then it will return 1. Otherwise, it will return 0. Syntax :

IS_IPV6(expr)

Parameter : This method accepts only one parameter.

• expr -Input string which we want to check.

Returns : It returns 1 if the string is a valid IPv6 address. If the string is not a valid IPv6 address then it will return 0. Example-1 : Checking whether the given address is valid or not using IS_IPV6 Function.

SELECT IS_IPV6('10.4.2.256') 
AS ValidOrNot;

Output :

VALIDORNOT
0

So, we can see the given address is not a valid IPv6 address. Example-2 : Checking whether the given address is valid or not using IS_IPV6 Function.

SELECT IS_IPV6('::2') 
AS ValidOrNot;

Output :

VALIDORNOT
1

So, we can see the given address is a valid IPv6 address. Example-3 : Checking whether a IPv4  address is valid IPv6 address or not using IS_IPV6 Function.

SELECT IS_IPV6('2001:0db8:85a3:0000:0000:8a2e:0370:7334')  
IPv6ValidOrNot,
IS_IPV4('2001:0db8:85a3:0000:0000:8a2e:0370:7334') 
AS IPv4ValidOrNot;

Output :

IPV6VALIDORNOT	IPV4VALIDORNOT
1	0