neo4j - apoc.path.expandConfig() 中的“relationshipFilter”似乎不起作用

Question

我有一个简单的 Neo4J 数据库，有 6 个节点和以下关系：

(n0:A {my_id:1})-[:A]->(n1) (n1)-[:B]->(n2) (n2)-[:C]->(n3) (n3)-[:B]->(n4) (n4)-[:A]->(n5:A)

运行以下 apoc 查询不会返回任何内容：

match(n {my_id:1})
 with (n)
  call apoc.path.expandConfig(n,{relationshipFilter: "A|B|C",
       labelFilter: "/A", 
       uniqueness: 'RELATIONSHIP_GLOBAL', 
       minLevel:1, maxLevel: 20, 
       filterStartNode:false}) yield path as path
return path

运行以下 apoc 查询时，会返回从 n0 到 n5 的路径：

match(n {my_id:1})
 with (n)
  call apoc.path.expandConfig(n,{relationshipFilter: "",
       labelFilter: "/A", 
       uniqueness: 'RELATIONSHIP_GLOBAL', 
       minLevel:1, maxLevel: 20, 
       filterStartNode:false}) yield path as path
return path

唯一的区别在于 relationshipFilter。你能告诉我我做错了什么吗？

谢谢 ！