如何在两个节点之间的neo4j中创建关系？

Question

I know the question above is a bit vague, but if I was more specific it wouldn't have fit in the title space. I am a bit unfamiliar with neo4j and cypher, but I think I am getting it. The problem I am having though is with two nodes I am trying to relate using a (:WRITTEN_BY) relation. The syntax I am using is this:

MATCH (d:Document), (p:Person) 
WHERE d.DocID = 'P-267-b' AND  p.PersonName = 'Billy Bob' 
CREATE (d)-[r:SIGNED_BY]->(p)
RETURN r

This doesn't cause any errors, but it doesn't return anything either. I already created the nodes that are used here, but when I use this code, no relation is actually created as far as I can tell. What am I doing wrong here? I have seen similar problems, but the solutions that were suggested didn't work for mine.

Answer 1

Try this if nodes are created then this query should work. Be careful with property names and label names because Cypher query is case sensitive . The first statement matches the nodes and second statement creates relation between document and person nodes.

MATCH (d:Document {docID:"P-267-b"}), (p:Person {personName:"Billy Bob"}) 
CREATE (d)-[r:SIGNED_BY]->(p)
RETURN r