HASHTYPE_SHA256
Purpose
This function computes a hash value by using the SHA256 algorithm (256 Bit).
Syntax
hashtype_sha256::=
Usage Notes
- Return values have data type HASHTYPE(32 byte).
- The data types of the input parameters are significant. That is why HASHTYPE_SHA256(123) is different from HASHTYPE_SHA256('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.
HASHTYPE_SHA256(c1,c2) is not similar to HASHTYPE_SHA256(c1||c2).