The Sha256() function hashes a specified text string with SHA256, and returns a hexadecimal text string. This hash function is preferred to SHA-1, being more secure.
WIKI:
This function is NOT SQL compatible. For more information about SQL compatibility, see our .
Hashed values cannot be decoded, usually you check an incoming value against a known value that you hash yourself and check if both values are identical, to verify correctness without knowing the actual value.
Returns a hexadecimal text string.
Returns Unknown if one of the parameter values is unknown or outside the common valid boundaries.