Neo4j Cypher查询删除节点和所有子节点和关系

Question

这是我在Cypher中的Neo4j代码的一部分:

CREATE 
(search{id : '0', title : 'Begin Search'}),
(telephone { id : '2' , title : 'Telephone' }),
(tablet { id : '1' , title : 'Tablet' }),
(printer { id : '3' , title : 'Printer' }),
(scanner { id : '4' , title : 'Scanner' }),
(laptop { id : '5' , title : 'Laptop' }),
(pc { id : '6' , title : 'Personal Computer' }),
(monitor { id : '7' , title : 'Monitor' }),

(galaxykids7wifi { id : '100' , model : ' Galaxy Tab 3 Kids 7.0 wi-fi', brand : 'Samsung', processor : 'Dual-Core Processor', network : 'Android Jelly Bean 4.1', memory : '8 Gb' , screen : '7 inches ', wieght : '302 g', dimensions : '111.1*188*9.9 mm' , battery : '4000 mAh', wifi : '802.11', wifi_speed : '2.4 + 5 GHz', wifi_type : 'a/b/g/n', ram : '1 Gb', kamera : '3 Mpix' }),
(galaxytab310wifi3g { id : '101' , model : ' Galaxy Tab 3 10.1 wi-fi + 3 G', brand : 'Samsung', processor : 'Dual-Core Intel Atom Processor', network : 'Android 2.2', memory : '16 Gb', memory1 : '32 Gb' , screen : '10.1 inches ', wieght : '512 g', dimensions : '176.1*243,1*7.45 mm' , battery : '6800 mAh', wifi : '802.11', wifi_speed : '2.4 + 5 GHz', wifi_type : 'a/b/g/n', ram : '1 Gb', kamera : '3 Mpix' }),
(galaxytab310wifi { id : '102' , model : ' Galaxy Tab 3 10.1 wi-fi', brand : 'Samsung', processor : 'Dual-Core Intel Atom Processor', network : 'Android 2.2', memory : '16 Gb',memory1 : '32 Gb' , screen : '10.1 inches ', wieght : '510 g', dimensions : '176.1*243,1*7.45 mm' , battery : '6800 mAh', wifi : '802.11', wifi_speed : '2.4 + 5 GHz', wifi_type : 'a/b/g/n', ram : '1 Gb', kamera : '3 Mpix' }), 
(galaxytab38wifi3g { id : '103' , model : ' Galaxy Tab 3 8.0 wi-fi + 3 G', brand : 'Samsung', processor : 'Dual-Core Processor', network : 'Android JB 4.2.2', memory : '16 Gb', memory1 : '32 Gb' , screen : '8 inches ', wieght : '316 g', dimensions : '123.8*209.8*7.4 mm' , battery : '4450 mAh', wifi : '802.11', wifi_speed : '2.4 + 5 GHz', wifi_type : 'a/b/g/n', ram : '1.5 Gb', kamera : '5 Mpix'}),
(galaxytab38wifi { id : '104' , model : ' Galaxy Tab 3 8.0 wi-fi', brand : 'Samsung', processor : 'Dual-Core Processor', network : 'Android JB 4.2.2', memory : '16 Gb', memory1 : '32 Gb' , screen : '8 inches ', wieght : '314 g', dimensions : '204.8*123.8*7.4 mm' , battery : '4450 mAh', wifi : '802.11', wifi_speed : '2.4 + 5 GHz', wifi_type : 'a/b/g/n', ram : '1.5 Gb', kamera : '5 Mpix'}),

(search)<-[:TYPE]-(tablet),
(search)<-[:TYPE]-(telephone),
(search)<-[:TYPE]-(printer),
(search)<-[:TYPE]-(scanner),
(search)<-[:TYPE]-(laptop),
(search)<-[:TYPE]-(pc),
(search)<-[:TYPE]-(monitor),

(tablet)<-[:TYPE]-(galaxykids7wifi),
(tablet)<-[:TYPE] -(galaxytab310wifi3g),
(tablet)<-[:TYPE]-(galaxytab310wifi),
(tablet)<-[:TYPE]-(galaxytab38wifi3g),
(tablet)<-[:TYPE]-(galaxytab38wifi)

我试图删除让节点1连接到它的所有子节点(在这种情况下是产品)和它们之间共享的关系.我尝试了很多解决方案,人们说在各种网页上工作,但我继续这样做

'STATEMENT_EXECUTION_ERROR' : 'Node with id 1' 

我猜测问题是查询无法读取节点所在的位置id : 1,但这没有任何意义.请尽可能帮助我.

像这样的查询不起作用:

start n=node(1) 
match n-[*]-x 
WITH x 
MATCH x-[r]-() delete x,r

编辑

下面的两个答案也不起作用.我正在运行Neo4j 2.0.0 - M06

1)

MATCH (n {id:'1'})<-[r]-x-[ss*0..]-y
WHERE NOT r IN ss  
OPTIONAL MATCH n-[t]->()
FOREACH (s IN ss | DELETE s)
DELETE r,y,t,n

Error: Invalid input 'P' : expected 'r/R'
   "OPTIONAL MATCH n-[t]->()"
     ^

2)

match (n {id : '1'})
optional match n-[r]-x
delete r,x

Invalid input 'o': expected whitespace, comment, a relationship patter, .....
"optional match n-[r]-x"
 ^

Answer 1

当您引用节点(1)时,您不是指具有值为1的id属性的节点,而是要求内部标识为1的节点(由Neo4j内部维护,您无法控制分配此值).所以这可能是它找不到id为1的节点的原因.

如果您使用2.0,那么这样的东西就可以工作(未经测试):

match (n {id : '1'})
optional match n-[r]-x
delete r,x