删除所有节点的操作

删除所有节点的操作MATCH (n)OPtiONAL MATCH (n)-[r]-()DELETE n,rCREATE (A1:Entities {title:'密封圈'})CREATE (A2:Entities {title:'轴承'})CREATE (A3:Entities {title:'垫片'})CREATE (A4:Entities {title:'前盖'})CREATE (A5:Entities {title:'电刷'})CREATE (A6:Entities {title: