的Cypher查询而定义的关系数

Question

Neo4j的版本失败-[r:CONNECTSWITH]->但如果关系数定义-[r:CONNECTSWITH*..3]->，那么它扔

钥匙找不到，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 

解决方法解决方案：

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：这感觉就像一个Neo4j的错误。如果您正在使用最新版本的Neo4j遇到此，你可能希望提交一个neo4j issue。

作为一种可能的解决方法，由于查询实际上并未使用r标识符，请尝试从查询中将其删除。