neo4j document

2.x에서 기존의 Create Unique을 대체

http://docs.neo4j.org/chunked/milestone/query-merge.html

MERGE (actor:Person { person_id:1 })

RETURN actor;

MERGE (movie:Movie { movie_id:100 })

RETURN movie;

MATCH (actor:Person { person_id:1 }),(movie:Movie { movie_id:100 })

MERGE (actor)-[r:ACTED_IN]->(movie)

RETURN r;