Question

您有一个CSV文件，我想同时创建节点和关系我使用以下查询来创建节点

using PERIODIC COMMIT 1000
load csv from "file:///home/gaurav/sharing/dataframe6.txt" as line fieldterminator" "
 MERGE (A :concept{name:line[0]})
 WITH line, A
 MERGE (B :concept{name:line[1]})
 WITH line, A, B
 create (A)-[:line[3]]->(B);  // This is trouble part

但是当我尝试在导入的节点之间创建关系时，我得到错误

Invalid input '[': expected an identifier character, whitespace, '|', a length specification, a property map or ']' (line 7, column 18 (offset: 218))
"create (A)-[:line[3]]->(B);"

Answer 1

如果您真的想以动态方式创建关系，则需要使用APOC程序，特别是apoc.create.relationship。

using PERIODIC COMMIT 1000
load csv from "file:///home/gaurav/sharing/dataframe6.txt" as line fieldterminator" "
MERGE (A :concept{name:line[0]})
WITH line, A
MERGE (B :concept{name:line[1]})
WITH line, A, B
CALL apoc.create.relationship(A, line[3], {}, B) YIELD rel
RETURN A,B,rel

Answer 2

关系不能包含方括号作为其类型名称。您正试图在节点A和B之间创建“line [3]”关系。

从csv文件中创建neo4j中节点之间的动态关系

2 个答案: