Invert relationships

The APOC library contains a procedure that can be used to invert the direction of relationships.

Procedure for inverting the direction of relationships

Qualified Name Type

Qualified Name	Type
apoc.refactor.invert `apoc.refactor.invert(rel RELATIONSHIP)` - inverts the direction of the given `RELATIONSHIP`.	Procedure

apoc.refactor.invert(rel RELATIONSHIP) - inverts the direction of the given RELATIONSHIP.

Procedure

The below example will further explain this procedure.

The following creates a graph containing two nodes connected by a relationship:

CREATE path=(c:Car {make:"Volvo"})-[rel:DRIVES {year:2001}]->(p:Person {name:"Dan"}) RETURN path

The following inverts the direction of the relationship:

MATCH (c:Car)-[rel:DRIVES]->(p:Person)
CALL apoc.refactor.invert(rel)
yield input, output
RETURN input, output

Table 1. Results
input	output
2	{"identity":3,"start":9,"end":8,"type":"DRIVES","properties":{"year":2001}}

The relationship has now been inverted

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MATCH path=(c:Car {make:"Volvo"})-[rel:DRIVES {year:2001}]-(p:Person {name:"Dan"}) RETURN path
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