Question

我用apoc.trigger.add创建了一个触发器：

CALL apoc.trigger.add('increase_followings_and_followers',
'UNWIND {createdRelationships} AS rel 
WITH rel, STARTNODE(rel) as follower, ENDNODE(rel) AS followed WITH rel, follower, followed
WHERE TYPE(rel)="FOLLOW" and labels(followed)="User" and labels(follower)="User" 
SET follower.followings = follower.followings +1, followed.followers= followed.followers+1',
{phase:'after'})

我构建了一个社交网络，当用户关注另一个时，触发器会自动增加关注者号码和跟随号码。但它不起作用，我不能创造新的关系＆＃34; FOLLLOW＆＃34;两个用户节点之间的

Answer 1

节点上的标签是一个集合，因此您需要使用IN运算符：

 val sc = SparkSession.builder()
                            .master("local")
                            .appName("Lea")
                            .getOrCreate()
   // example login = angelique
   var login:String = (givenName+"."+sn).replaceAll(" ", "")

   sc.sql("SELECT login FROM global_temp.users where login="+login).show

在neo4j中添加触发器时无法创建关系

1 个答案: