的Cypher查詢而定義的關係數

Question

Neo4j的版本失敗-[r:CONNECTSWITH]->但如果關係數定義-[r:CONNECTSWITH*..3]->，那麼它扔

鑰匙找不到，R

工作：

OPTIONAL MATCH p=(o:PORT{name:"busstop1"})-[r:CONNECTSWITH]->(d:PORT{name:"busstop2"}) 
WHERE ALL(r1 IN rels(p) 
      WHERE 1 = size(filter(r2 IN rels(p) WHERE (r1.service = r2.service)))) 
AND ALL(n IN nodes(p) WHERE 1 = size(filter(m IN nodes(p) WHERE id(m) = id(n)))) 
RETURN p 
LIMIT 10 

不工作：

OPTIONAL MATCH p=(o:PORT{name:"busstop1"})-[r:CONNECTSWITH*..3]->(d:PORT{name:"busstop2"}) 
WHERE ALL(r1 IN rels(p) 
      WHERE 1 = size(filter(r2 IN rels(p) WHERE (r1.service = r2.service)))) 
AND ALL(n IN nodes(p) WHERE 1 = size(filter(m IN nodes(p) WHERE id(m) = id(n)))) 
RETURN p 
LIMIT 10 

解決方法解決方案：

OPTIONAL MATCH p=(o:PORT{name:"busstop1"})-[r:CONNECTSWITH*..3]->(d:PORT{name:"busstop2"}) 
WHERE ALL(r1 in rels(p) 
      WHERE 1 = size(filter(r2 IN rels(p) WHERE (r1.service = r2.service)))) = 
     ALL(n IN nodes(p) WHERE 1 = size(filter(m IN nodes(p) WHERE id(m) = id(n)))) 
AND ALL(r1 in rels(p) 
     WHERE 1 = size(filter(r2 IN rels(p) WHERE (r1.service = r2.service)))) 
RETURN p 
LIMIT 10 

Answer 1

旁白：這感覺就像一個Neo4j的錯誤。如果您正在使用最新版本的Neo4j遇到此，你可能希望提交一個neo4j issue。

作爲一種可能的解決方法，由於查詢實際上並未使用r標識符，請嘗試從查詢中將其刪除。