Neo4j Cypher Query 获取所有子节点，直到到达具有特定关系的节点

Question

I am trying create a query in which starts with the blue nodes called "Analytical Units". The query will get all sub-nodes unless it runs into a node which "overrides" the relationship by being directly attached to a different analytical unit. Any help would be appreciated!

Answer 1

Does this query work for you?

It should return each Blue node (that has a path to any Red nodes) and its "sub-nodes" (along each of those paths), ignoring paths in which any sub-node (except the first) has an incoming ANALYTICALLY_COMPOSED relationship:

MATCH (a:Blue)-[:ANALYTICALLY_COMPOSED]->(b)
MATCH p=(b)-[rels*]-(:Red)
WITH a, NODES(p) AS subnodes
WHERE NONE(n IN subnodes[1..] WHERE ()-[:ANALYTICALLY_COMPOSED]->(n)) 
RETURN a, subnodes;