apoc.hashing.fingerprint

Function APOC Core

calculate a checksum (md5) over a node or a relationship. This deals gracefully with array properties. Two identical entities do share the same hash. MD5 is a weak hashing algorithm which is unsuitable for cryptographic use-cases.

Signature

apoc.hashing.fingerprint(some object :: ANY?, propertyExcludes = [] :: LIST? OF STRING?) :: (STRING?)

Input parameters

Name	Type	Default
some object	ANY?	null
propertyExcludes	LIST? OF STRING?	[]

Name

Type

Default

some object

ANY?

null

propertyExcludes

LIST? OF STRING?

[]

Usage Examples

The examples in this section are based on the following sample graph:

MERGE (joe:Person {name: "Joe"})
MERGE (ryan:Person {name: "Ryan"})
MERGE (ryan)-[:FOLLOWS {since: datetime("2020-11-04")}]->(joe);

MATCH (person:Person {name: "Ryan"})
RETURN apoc.hashing.fingerprint(person) AS output;

Table 1. Results
output
"81C99DD6C9382C4E01A1873F9E818CE0"

MATCH ()-[rel:FOLLOWS]->()
RETURN apoc.hashing.fingerprint(rel) AS output;

Table 2. Results
output
"C5A4B9FA273CC723D96BF93FFDD42858"

RETURN apoc.hashing.fingerprint({name: "Michael"}) AS output;

Table 3. Results
output
"F582CEF35FA83F3691BB756313191948"

If we want more control over fingerprint generation, see apoc.hashing.fingerprinting.

More documentation of apoc.hashing.fingerprint