问题: 窒息性毒剂和失能性毒剂2层内的最短关系路径有多少？
Cypher查询:
match p=allshortestpaths((a:ENTITY{name:'窒息性毒剂'})-[:Relationship*..2]-(b:ENTITY{name:'失能性毒剂'})) return count(p)
查询结果:
0