Question

我已经像下面的示例csv文件，我想将其导入的Neo4j和创建节点和关系。

"N_ID","Name","Relationship","A_ID","Address"
"N_01","John Doe","resident","A_01","1138  Mapleview Drive"
"N_02","Jane Doe","resident","A_01","1138  Mapleview Drive"
"N_03","Randall L Russo","visitor","A_02","866  Sweetwood Drive"
"N_04","Sam B Haley","resident","A_03","152  Point Street"
"N_01","John Doe","mailing address","A_04",3490  Horizon Circle"

“M能够创建使用下面的代码节点，但我不知道如何根据CSV文件创建关系。

using PERIODIC COMMIT 1000
LOAD CSV WITH HEADERS FROM
‘File://contacts.csv' AS line
CREATE (:Person {ID:line.N_ID, name:line.Name})

我尝试了此操作，但没有用。

CREATE (:Person {N_ID:line.N_ID, Name:line.Name})-[:line.Relationship]-> (:Address {A_ID:line.A_ID, Address:line.Address})

请忍受我是Neo4j的新手。

Answer 1

安装 apoc plugin 并尝试以下查询：

USING PERIODIC COMMIT 1000
LOAD CSV WITH HEADERS FROM 'file://contacts.csv' AS line
MERGE (p1:Person {N_ID:line.N_ID})
ON CREATE SET p1.Name=line.Name
MERGE (a1:Address {A_ID:line.A_ID})
ON CREATE SET a1.Address=line.Address
WITH a1,p1,line
CALL apoc.merge.relationship(p1,line.Relationship,{},{},a1) YIELD rel
RETURN count(*);

加载CSV文件并创建节点和替换

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