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有許多關係和節點。我們想要從Neo4j數據庫中檢索數據作爲對象數組。作爲Neo4j中的對象數組檢索數據
如果我們MATCH爲:
MATCH (user: user {name:"x"})
OPTIONAL MATCH (user)-[r]->(item)
OPTIONAL MATCH (item)-[s]->(approver)
RETURN user, item, approver
我們得到的結果爲:
[{user:{properties:{name:"x"}}, item:{properties:{name:"abc"}}, approver:{properties:{name:"a"}}},
{user:{properties:{name:"x"}}, item:{properties:{name:"abc"}}, approver:{properties:{name:"b"}]}},
{user:{properties:{name:"x"}}, item:{properties:{name:"xyz"}}, approver:{properties:{name:"c"}}},
{user:{properties:{name:"x"}}, item:{properties:{name:"xyz"}}, approver:{properties:{name:"d"}}} }]
我們需要得到類似序結果,減少複雜性,同時在客戶端處理龐大的關係:
[{user:{properties:{name:"x"}}, item:{properties:{name:"abc"}}, approvers:[{properties:{name:"a"}}, {properties:{name:"b"}}]},
{user:{properties:{name:"x"}}, item:{properties:{name:"xyz"}}, approvers:[{properties:{name:"c"}}, {properties:{name:"d"}}] }]
如何做到這一點?