Neo4j Cypher - Return subset of nodes with same type

Question

Just started learning about graph databases and can't solve this most likely very easy problem (real-world) - any help would be greatly appreciated.

Problem

Given Node X find Subset Y.

Using a Neo4j Cypher Query - Direct Image Link

Answer 1

The query below returns your 'X' node, and a collection of the other nodes labeled A that are also liked by the same B nodes.

MATCH (a:A)<-[:likes]-(:B)-[:likes]->(otherA:A)
WHERE a.id = 'X'
RETURN a, COLLECT(otherA)

I assume here that you identify your A nodes by an id property. There is no need to explicitly make sure that otherA is never the same as a, since Cypher does that for you automatically (see manual).

Answer 2

Solution

MATCH (a {api_id: 182983836})<-[:likes]-(b)-[:likes]->(c) RETURN c