IS_IPV6_STRING

描述

接收一个表示形式为字符串的IPv6地址作为参数，如果为格式正确且合法的IPv6地址，返回true；反之，返回false。

语法

IS_IPV6_STRING(<ipv6_str>)

参数

Parameter	Description
<ipv6_str>	字符串类型的ipv6地址

返回值

如果为格式正确且合法的IPv6地址，返回1 (true)；反之，返回0 (false)。

• 如果输入为NULL, 则返回NULL

举例

CREATE TABLE `test_is_ipv6_string` (
      `id` int,
      `ip_v6` string
    ) ENGINE=OLAP
    DISTRIBUTED BY HASH(`id`) BUCKETS 4
    PROPERTIES (
    "replication_allocation" = "tag.location.default: 1"
    );
    
insert into test_is_ipv6_string values(0, NULL), (1, '::'), (2, ''), (3, '2001:1b70:a1:610::b102:2'), (4, 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffffg');

select id, ip_v6, is_ipv6_string(ip_v6) from test_is_ipv6_string order by id;

+------+------------------------------------------+-----------------------+
| id   | ip_v6                                    | is_ipv6_string(ip_v6) |
+------+------------------------------------------+-----------------------+
|    0 | NULL                                     |                  NULL |
|    1 | ::                                       |                     1 |
|    2 |                                          |                     0 |
|    3 | 2001:1b70:a1:610::b102:2                 |                     1 |
|    4 | ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffffg |                     0 |
+------+------------------------------------------+-----------------------+