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rafikj · 04-21-2020

I am an advanced SQL and SPARQL user and I am currently finding it difficult to map some concepts and patterns to Cypher. I did read the documentation and I find the examples are too simple. I need to express the following traceability path in Cyphe...

rafikj · 04-20-2020

This is my first post. So please take it easy on me if the question does not make sense. I am running Neo4j community 4.0.3. I create a Cypher query that looks like: OPTIONAL MATCH (a)-[r1]->(b) MATCH (b)-[r2]->(c) I want the query to return all a's ...

rafikj · 04-24-2020

I think now I got it. The behavior I was actually looking for is indeed: MATCH (a) OPTIONAL MATCH (a)-[:r1]->(b)-[:r2]->(c) OPTIONAL MATCH (c)-[:r3]->(d)-[:r4]->(e)-[:r5]->(f) OPTIONAL MATCH (f)-[:r6]->(g) as described by the SQL and SPARQL represent...

rafikj · 04-23-2020

Thanks Andrew, That should work. The pattern below seems to also work for me. MATCH (a) OPTIONAL MATCH (a)-[:r1]->(b)-[:r2]->(c) OPTIONAL MATCH (c)-[:r3]->(d)-[:r4]->(e)-[:r5]->(f) OPTIONAL MATCH (f)-[:r6]->(g)

rafikj · 04-20-2020

Thanks Vivek, I am an advanced SQL and SPARQL user and I am currently finding it difficult to map some concepts and patterns to Cypher. I did read the documentation and I find the examples are too simple. Going back to the more complicated example:...

rafikj · 04-20-2020

Thanks Vivek, That did work. So my guess when I see the expression: OPTIONAL MATCH (a)-[r1]->(b)-[r2]->(c) What that really means is that r1 is optional but all subsequent relationships on the same path (r2) are not optional. So to generalize if I ha...

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