[英]Finding nodes which are connected to at least 2 same nodes through 2 relationships but with the intermediary one being different
我想找出以下案例中的所有人員和事故夫婦:
我總是有以下關系:人 --> 車 --> 事故
我做了一個簡化且可重現的例子:
CREATE
(p1:Person {name: 'Paul'})-[:DRIVES]->(c1:Car {name: 'Car A'}),
(p2:Person {name: 'John'})-[:DRIVES]->(c2:Car {name: 'Car B'}),
(p3:Person {name: 'Mike'})-[:DRIVES]->(c3:Car {name: 'Car C'}),
(p4:Person {name: 'Joe'})-[:OCCUPANT]->(c1),
(p4)-[:OCCUPANT]->(c3),
(c1)-[:IS_DOER]->(a1: Accident {name: 'Crash 1'}),
(c2)-[:IS_VICTIM]->(a1),
(c2)-[:IS_DOER]->(a2: Accident {name: 'Crash 2'}),
(c3)-[:IS_VICTIM]->(a2) ;
這是圖表的樣子:
在這個例子中,我想返回這對夫婦 ("Joe", "John") 和 ("Crash 1", "Crash 2"),因為 Joe 和 John 都卷入了至少 2 起相同的事故,同時處於不同的汽車。
感謝您的幫助。
其實我想我找到了答案:
MATCH
(p1:Person)-[r1]->(c1:Car)-[r2]->(a:Accident)<-[r3]-(c2:Car)<-[r4]-(p2:Person)
WHERE c1<>c2
WITH p1, p2, COUNT(DISTINCT a) AS count_accident
WHERE count_accident>= 2
RETURN p1, p2
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