HASH_MD5
Purpose
This function computes a hash value by using the MD5 algorithm (128 Bit).
Syntax
hash_md5::=
Usage Notes
- Return values have data type CHAR(32) and contain hex characters.
- The data types of the input parameters are significant. That is why HASH_MD5(123) is different to HASH_MD5('123').
- Multiple input expressions are concatenated (in their internal byte representation) before the hash value is computed.
- The function returns NULL if all input expressions are NULL.
Generally, HASH_MD5(c1,c2) is not similar to HASH_MD5(c1||c2).