如SQL标准中所述，此函数返回输入字符串的八位字节长度或字节长度。

This function, as mentioned in SQL standard, returns the length of the input string in octets or bytes.

youdao

标准的散列函数，如MD5或SHA1保障是小的输入唯一的（4字节）？

Are standard hash functions like MD5 or SHA1 quaranteed to be unique for small input (4 bytes)?

youdao

标准的散列函数，如MD5或SHA1保障是小的输入唯一的（4字节）？

Are standard hash functions like MD5 or SHA1 quaranteed to be unique for small input (4 bytes)?

youdao