Neo4j-Cypher节点及其关系

我有以下疑问：

MATCH (dg:DecisionGroup)-[:CONTAINS]->(childD:Decision) 
WHERE dg.id = {decisionGroupId} 
MATCH (filterCharacteristic1:Characteristic) 
WHERE filterCharacteristic1.id = 1 
WITH dg, filterCharacteristic1 
CALL apoc.index.between(childD,'HAS_VALUE_ON',filterCharacteristic1,'(value:(10))') YIELD rel 
WITH DISTINCT rel, childD, dg 
MATCH (childD)-(rel)  // here I need to go further only with 'childD' nodes that have relationship with 'rel'(match `apoc.index.between` predicate)

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正如您从上面的查询中所看到的，最后我尝试过滤与rel有关系的childD节点，但我不知道如何用Cypher来描述它。像childD-rel或childD-[rel]这样的东西不起作用并导致错误。请帮助

您需要查找匹配模式并比较关系：

...
WITH DISTINCT rel, childD, dg 
MATCH (childD)-[tmp]-() WHERE tmp = rel
RETURN rel, child, dg

或者您可以直接比较：

...
WITH DISTINCT rel, childD, dg, startNode(rel) AS sRel, endNode(rel) AS eRel 
WHERE (childD)--(sRel) OR (childD)--(eRel)
RETURN rel, child, dg