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CREATE (n:Person{Person:'kk') return n;
# 未带值的关系
MATCH (n),(m) WHERE n.id ="a" AND m.id = "b" CREATE (n)-[:TO]->(m)
# 带值的关系
MATCH (n),(m) WHERE n.Person ="jj" AND m.Person = "kk" CREATE (n)-[:TO{value: "1"}]->(m)
MATCH (:Person {id: "a"})-[r:KNOWS]-(:Person {id: "b"})
DELETE r
match (n) detach delete n
MATCH (n) RETURN n
MATCH ()-[r]->() RETURN r