CODEWITHSUNDEEP
neo4jrelationshipdirected-graph
user12678036
user12678036

Reputation: 59

created two- directed relationships in neo4j

I'm trying to create one directed relationship if user_1<-FOLLOWS-> user_2. When I'm using the following cypher it creates those relationships duplicated as user1-[FOLLOWS]->user2 and user1<-[:FOLLOWS]-user2. 

LOAD CSV with headers FROM "file:///a.csv" AS profile FIELDTERMINATOR';'
 MATCH (n1:Profile {id:trim(profile.fromId)})
   MATCH (n2:Profile {id:trim(profile.ToId)})
   MERGE (n1)-[:FOLLOWS]->(n2);

Have you got any ideas instead of creating double time the same type of relationship?

Upvotes: 0

Views: 297

Answers (1)

TheTeacher
TheTeacher

Reputation: 510

There is no Undirected graph support in neo4j . But there is support for pattern match without direction .i.e : you can query like , MATCH (n1)-[:FOLLOWS]-(n2) or MERGE (n1)-[:FOLLOWS]-(n2). So , there is no need for undirected graph when there is scope for matching without giving direction.

so in your case , if you do like this, it wont create duplicate relations 

   MATCH (n1:Profile {id:trim(profile.fromId)})
   MATCH (n2:Profile {id:trim(profile.ToId)})
   MERGE (n1)-[:FOLLOWS]-(n2)

Upvotes: 1

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