但是对于多字节编码，字符的字节长度随使用编码模式的不同而不同，每个字符的长度可能是一个字节或多个字节。

However, in the case of a multi-byte encoding, the length of the character in bytes varies according to the encoding used, and each character can be one or more bytes in length.

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CHAR存储固定长度的单字节或多字节的文本字符串(最高可达32,767个字节)；在整理文本数据时支持使用代码集顺序。

CHAR Stores single-byte or multibyte text strings of fixed length (up to 32,767 bytes); supports code-set order in collation of text data.

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VARCHAR存储可变长度的单字节或多字节文本字符串(最高可达255个字节)；在整理文本数据时支持使用代码集顺序。

VARCHAR Stores single-byte or multibyte text strings of varying length (up to 255 bytes); supports code-set order collation of text data.

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