Neo4j

cvjones17 · 10-09-2020

Consider a simple graph like: A-[:label1]->B-[:label2]->C-[:label1]->D-[:label1]->E-[:label2]->F I'd like to find paths in the graph that have both label1 and label2, e.g., MATCH r=(n1)-[x:label1|label2*]->(n2) In addition, if a node x has a relation...

cvjones17 · 10-09-2020

Beginning to dive into Neo4j for some graph search, path algorithms. Looking forward to learn. Have degrees in operations research, so have done a lot of work with graphs, but just starting with neo4j.

cvjones17 · 10-13-2020

The following query, using 'CALL' seems to work: MATCH r=(n1)-[x:label1|label2*]->(n2) WITH relationships(r) as allpaths, nodes(r) as allnodes,n1,n2 CALL { WITH allpaths, allnodes,n1,n2 OPTIONAL MATCH (n2)-[:label2]->(n3) OPTIONAL MATCH (...

cvjones17 · 10-13-2020

Here's another unsuccessful attempt using apoc.path.expand: MATCH (p:Node) CALL apoc.path.expand(p, "label2>|label1>", null,0,10) YIELD path where length(path) > 0 return nodes(path) as allnodes "allnodes" ...

cvjones17 · 10-13-2020

cvjones17: MATCH r=(n1)-[x:label1|label2*]->(n2) WITH nodes(r) as allnodes, n1, n2 WHERE none (y in allnodes where exists ((y)-[q:label2]->(z)) AND not (z in allnodes)) RETURN allnodes,n1,n2 Dear Terry: Thanks for the help. I tried removing 'q...

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Path with two different relationship labels. One label option another required

Chris, J, Seattle

Re: Path with two different relationship labels. One label option another required

Re: Path with two different relationship labels. One label option another required

Re: Path with two different relationship labels. One label option another required