mysql - What's the difference between MySQL bit vs binary?

Question

We can store binary values using either binary or bit (up to 64 bits).

What is the difference between using binary(n) vs using bit(m) (where n = 8 × m)?

Are they recognized as the same thing by MySQL?

(Assuming using MySQL >= 5.0.3.)

Answer 1

您可以根据需要使用 BIT 或 BINARY 存储位。BIT 数据类型在逻辑运算中可能更有用。

存储上有一个小的区别：

• BINARY(M) 需要确切的字节数 - M
• BIT 类型的长度可能会有所不同，请在此处找到更多信息 -数据类型存储要求。