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 fromHASHTYPE_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 areNULL
.
HASHTYPE_SHA256(c1,c2)
is not similar to HASHTYPE_SHA256(c1||c2)
.