带有collect和delete子句的neo4j查询问题
我是neo4j的新手。根据我的要求,我需要获取ID列表(collect)并在同一查询中删除节点 在下面的查询中,当我只返回ID时,我得到了正确的结果,即;2个ID带有collect和delete子句的neo4j查询问题,neo4j,cypher,Neo4j,Cypher,我是neo4j的新手。根据我的要求,我需要获取ID列表(collect)并在同一查询中删除节点 在下面的查询中,当我只返回ID时,我得到了正确的结果,即;2个ID START n=node:galleryid(galleryid='f0666ac5-9f61-4431-80b1-c9719ef8c1f9') MATCH n-[rels*1..]->p WITH n, rels, p, collect(p.photouniqueid) as photoids RETURN photoi
START n=node:galleryid(galleryid='f0666ac5-9f61-4431-80b1-c9719ef8c1f9')
MATCH n-[rels*1..]->p
WITH n, rels, p, collect(p.photouniqueid) as photoids
RETURN photoids;
结果与预期一致并已获得:[“3dcd792b-9eed-4a74-826a-6801c9f2b707”][“e5c91a60-41cf-4afb-8aa6-49a4af00dd38”]
但是当我尝试将delete子句附加到查询时,我只得到一个id
START n=node:galleryid(galleryid='f0666ac5-9f61-4431-80b1-c9719ef8c1f9')
MATCH n-[rels*1..]->p WITH n, rels, p, collect(p.photouniqueid) as photosid
FOREACH(rel IN rels: DELETE rel)
DELETE p
WITH n, photosid
MATCH n<-[r]-()
DELETE n, r
RETURN photosid;
Result - ["3dcd792b-9eed-4a74-826a-6801c9f2b707"]
==> 1 row
==> Nodes deleted: 3
==> Relationships deleted: 3
START n=node:galleryid(galleryid='f0666ac5-9f61-4431-80b1-c9719ef8c1f9')
将n-[rels*1..]>p与n,rels,p,collect(p.photouniqueid)匹配为photoid
FOREACH(rel中的rel:删除rel)
删除p
用n,photoId
匹配n 1行
==>已删除节点:3个
==>删除的关系:3
有人能提出第二个问题吗?谢谢你的帮助。试试这个:
START n=node:galleryid(galleryid='f0666ac5-9f61-4431-80b1-c9719ef8c1f9')
MATCH n-[rels*1..]->p
WITH n, collect(path as paths) collect(p.photouniqueid) as photosid
FOREACH(p IN paths:
FOREACH(r in rels(p) : DELETE rel)
FOREACH(x in tail(nodes(p)) : DELETE x)
)
WITH n, photosid
MATCH n<-[r]-()
DELETE n, r
RETURN photosid;
START n=node:galleryid(galleryid='f0666ac5-9f61-4431-80b1-c9719ef8c1f9')
匹配n-[rels*1..]->p
使用n,collect(路径作为路径)collect(p.photouniqueid)作为photoid
路径中的FOREACH(p:
FOREACH(rels中的r(p):删除rel)
FOREACH(尾部的x(节点(p)):删除x)
)
用n,photoId
匹配您可能会删除下一个匹配所需的中间关系。试着事先汇总你需要的结果。