apoc.refactor.invert

Procedure APOC Core

apoc.refactor.invert(rel) inverts relationship direction

Signature

apoc.refactor.invert(relationship :: RELATIONSHIP?) :: (input :: INTEGER?, output :: RELATIONSHIP?, error :: STRING?)

Input parameters

Name Type Default

relationship

RELATIONSHIP?

null

Output parameters

Name Type

input

INTEGER?

output

RELATIONSHIP?

error

STRING?

Usage Examples

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

CREATE (mark:Person {name: "Mark", city: "London"})
CREATE (jennifer:Person {name: "Jennifer", city: "St Louis"})
CREATE (mark)-[:FOLLOWS]->(jennifer);

The following reverses the direction of the FOLLOWS relationship:

MATCH ()-[rel:FOLLOWS]->()
CALL apoc.refactor.invert(rel)
YIELD input, output
RETURN input, output;
Table 1. Results
input output

0

[:FOLLOWS]

We can list all the Person nodes by running the following query:

MATCH path = ()-[rel:FOLLOWS]->()
RETURN path;
Table 2. Results
path

(:Person {name: "Jennifer", city: "St Louis"})-[:FOLLOWS]→(:Person {name: "Mark", city: "London"})

More documentation of apoc.refactor.invert