bigint unsigned

引用\[1\]:BIGINT UNSIGNED 是 MySQL 中一种无符号的整数数据类型，使用 8 个字节（64 位）存储。它的取值范围是从 0 到 18,446,744,073,709,551,615（2^64-1），即最大值为无符号 64 位整数的最大值。与普通的 BIGINT 类型不同，BIGINT UNSIGNED 类型不能存储负数，因此可以用于存储只有正整数的数据，例如 IP 地址、端口号等。\[1\]

问题:bigint unsigned是什么?
回答: BIGINT UNSIGNED 是 MySQL 中一种无符号的整数数据类型，它的取值范围是从 0 到 18,446,744,073,709,551,615（2^64-1），即最大值为无符号 64 位整数的最大值。与普通的 BIGINT 类型不同，BIGINT UNSIGNED 类型不能存储负数，因此可以用于存储只有正整数的数据，例如 IP 地址、端口号等。\[1\]
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