try this: MATCH (person:Person) OPTIONAL MATCH (person)-[:KNOWS]-(f1:Person)-[:KNOWS]-(f2:Person)-[:KNOWS]-( f3:Person) WITH person, count(distinct f1) as f1, count(distinct f2) as f2,count(distinct f3) as f3 RETURN person._firstName + " " + person._lastName, f1, f2, f3
alternatively MATCH (person:Person) OPTIONAL MATCH (person)-[:KNOWS]-(f1:Person)-[:KNOWS]-(f2:Person) WITH person, count(distinct f1) as f1, count(distinct f2) as f2,collect(distinct f2) as p2 WITH person, f1,f2, reduce(x=0, p in p2 | x + size((p2)-[:KNOWS]-()) ) as f3 RETURN person._firstName + " " + person._lastName, f1, f2, f3 On Tue, Mar 15, 2016 at 10:30 PM, Michael Azerhad <michael.azer...@gmail.com > wrote: > Using Neo4J 2.1.5. > > Data: > > - 2000 Persons > - KNOWS relationships between some of them > > > Goal of the query: > > For each person, display her fullname + amount of friends + amount of > friends' friends + amount of friends' friends' friends. > > > MATCH (person:Person) > WITH person > OPTIONAL MATCH person-[:KNOWS]-(p:Person) > WITH person, count(p) as f1 > OPTIONAL MATCH path = shortestPath(person-[:KNOWS*..2]-(f2:Person)) > WHERE length(path) = 2 > WITH count(nodes(path)[-1]) AS f2, person, f1 > OPTIONAL MATCH path = shortestPath(person-[:KNOWS*..3]-(f3:Person)) > WHERE length(path) = 3 > WITH count(nodes(path)[-1]) AS f3, person, f2, f1 > RETURN person._firstName + " " + person._lastName, f1, f2, f3 > > > This query lasts long ! : 60 seconds ! > > Is there a tips to optimize it? > > Thanks, > > Michael > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to neo4j+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
