[Neo4j] DELETE / 2023.02.03

https://neo4j.com/docs/cypher-manual/current/clauses/delete/

DELETE - Cypher Manual

 

* Example Graph

CREATE
  (keanu:Person {name: 'Keanu Reever'}),
  (laurence:Person {name: 'Laurence Fishburne'}),
  (carrie:Person {name: 'Carrie-Anne Moss'}),
  (tom:Person {name: 'Tom Hanks'}),
  (theMatrix:Movie {title: 'The Matrix'}),
  (keanu)-[:ACTED_IN]->(theMatrix),
  (laurence)-[:ACTED_IN]->(theMatrix),
  (carrie)-[:ACTED_IN]->(theMatrix)

1. Delete single node (관계가 없는 노드만 가능)

match (n:Person {name: 'Tom Hanks'}) delete n

2. Delete relationships only

match(n:Person {name:'Laurence Fishburne'})-[r:ACTIVE_IN]->()
delete r

 

3. Delete a node with all its relationships

MATCH (n:Person {name: 'Carrie-Anne Moss'})
DETACH DELETE n

4. Delete all nodes and relationships

match(n) detach delete n