Neo4j 如何将此密码查询转换为OrientDB SQL

具有以下密码查询：

 MERGE (r:Root)
 MERGE (r)<-[:N]-(n1:T {id: 'a'})
 SET n1.description = 'd1'
 WITH r,n1
 MERGE (n1)<-[:N]-(n2:T {id: 'b'})
 SET n2.description = 'd2'
 WITH r,n2
 MERGE (n2)<-[:N]-(n3:T {id: 'c'})
 SET n3.description = 'd3'

MERGE（r:Root）
合并（r）