Neo4j如何從一組節點創建/刪除關係ids

Question

我有一個User節點和Intersets節點。我希望能夠給出一組興趣來創建/刪除/更改User和Interests之間的關係我也希望在同一查詢中更新用戶節點上的一些屬性。

到目前爲止，這是我所家政做：

MATCH (user:User {id: id}) 
OPTIONAL MATCH (user)-[oldRel:InterestedIn]->(:Interest) 
DETACH DELETE oldRel 
WITH user 
UNWIND {interestsIds} as id 
MATCH (interest:Interest {id: id}) 
MERGE (user)-[rel: InterestedIn]->(interest) 
SET user.name = {user}.name, ..(more sets) 
RETURN user, collect(interest) as interests 

我覺得這一個是工作壽一些時間看起來像interests返回複製.. 除了這個查詢看起來有點的矯枉過正。任何想法如何以更好的方式做這個查詢？

Answer 1

這似乎是正確的嗎？

MATCH (user:User {id: id}) 
OPTIONAL MATCH (interest:Interest) 
WHERE interest.id IN {interestsIds} 
MERGE (user)-[:InterestedIn]->(interest) 

WITH DISTINCT user 
MATCH (user)-[rel:InterestedIn]->(interest:Interest) 
WHERE NOT(interest.id IN {interestsIds}) 
DELETE rel 

WITH DISTINCT user 
MATCH (user)-[:InterestedIn]->(interest:Interest) 
RETURN user, collect(interest)