apoc.nodes.relationship.types

Function

apoc.nodes.relationship.types(nodes ANY, types STRING) - returns a LIST<STRING> of distinct RELATIONSHIP types from the given LIST<NODE> values.

Signature

apoc.nodes.relationship.types(nodes :: ANY, types =  :: STRING) :: LIST<ANY>

Input parameters

Name Type Default Description

nodes

ANY

null

nodes can be of type STRING (elementId()), INTEGER (id()), NODE or LIST<STRING | INTEGER | NODE>.

types

STRING

""

If not empty, provides an allow list of the RELATIONSHIP types to return.

Output parameters

Name Type Description

value

LIST<MAP>

A LIST<MAP> containing MAP values with the keys; "node" → NODE and "types" → LIST<STRING> containing STRING values of each type.

Usage Examples

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

MERGE (michael:Person {name: "Michael"})
WITH michael
CALL {
    WITH michael
    UNWIND range(0, 100) AS id
    MERGE (p:Person {name: "Person" + id})
    MERGE (michael)-[:KNOWS]-(p)
    RETURN count(*) AS friends
}

CALL {
    WITH michael
    UNWIND range(0, 50) AS id
    MERGE (p:Person {name: "Person" + id})
    MERGE (michael)-[:FOLLOWS]-(p)
    RETURN count(*) AS follows
}

RETURN friends, follows;
Table 1. Results
friends follows

101

51

 
MATCH (p1:Person)
WHERE p1.name IN ["Michael", "Person30", "Person60"]
WITH collect(p1) AS people
UNWIND apoc.nodes.relationship.types(people, "KNOWS>|FOLLOWS") AS output
RETURN output;
Table 2. Results
output

{node: (:Person {name: "Michael"}), types: ["KNOWS", "FOLLOWS"]}

{node: (:Person {name: "Person30"}), types: ["FOLLOWS"]}

{node: (:Person {name: "Person60"}), types: []}

More documentation of apoc.nodes.relationship.types