Delete commands in Neo4J:
Delete a single node:
MATCH (n:Person { name: 'UNKNOWN' })
DELETE n
Delete all nodes and relationships:
MATCH (n)
DETACH DELETE n
Delete a node with its relationship:
MATCH (n { name: 'Andres' })
DETACH DELETE n
Delete relationships only:
MATCH (n { name: 'Andres' })-[r:KNOWS]->()
DELETE r
