我正在尝试构建一个Cypher查询来测试是否存在特定结构，因此我可以将日期与之关联起来。
在Linux服务器上运行Neo4j 2.1.0-M01，但Neo4j 2.0.1也出现了同样的问题
我们从干净的数据库开始，0个节点。
首先，我运行此MATCH查询以证明它运行。 显然这个查询不会返回任何节点。但是在创建节点之后，它会 因未知错误而失败＆＃39;。 这对我来说似乎是一个错误，因为具有较少节点的查询将返回。有没有人建议如何重写此查询？
很抱歉这篇文章中包含大量代码。
谢谢，
-Edwin
Cypher查询：
MATCH (c:Cluster{cluster_name:'mycluster',cluster_uuid:'7bd4f66d-5faf-11db-8d0d-000e0cba569c'})
,(sc1:Controller{serialnumber:'7000610071',system_id:'1873784171',hostname:'node01',node_uuid:'7cd70205-66ae-11e0-a4a9-0deba859517d'})
,(sc1)-[:IS_PART_OF_CLUSTER]->(c)
,(sc2:Controller{serialnumber:'7000606111',system_id:'1873778118',hostname:'node02',node_uuid:'b954f0a1-6682-11e0-b8a0-517da924923d'})
,(sc2)-[:IS_PART_OF_CLUSTER]->(c)
,(sc3:Controller{serialnumber:'7000561878',system_id:'1873772083',hostname:'node03',node_uuid:'ac293586-6690-11e0-b8a0-517da924923d'})
,(sc3)-[:IS_PART_OF_CLUSTER]->(c)
,(sc4:Controller{serialnumber:'800000075807',system_id:'1873784143',hostname:'node04',node_uuid:'e8d6c7e5-663e-11e0-b8a0-517da924923d'})
,(sc4)-[:IS_PART_OF_CLUSTER]->(c)
,(sc5:Controller{serialnumber:'7000477261',system_id:'1873745662',hostname:'node05',node_uuid:'1d1ecc64-728c-11e0-bf0e-3d25383f7ed3'})
,(sc5)-[:IS_PART_OF_CLUSTER]->(c)
,(sc6:Controller{serialnumber:'7000477273',system_id:'1873745654',hostname:'node06',node_uuid:'140fb0f9-728c-11e0-afeb-49fcf0b6e6c3'})
,(sc6)-[:IS_PART_OF_CLUSTER]->(c)
,(sc7:Controller{serialnumber:'7000474908',system_id:'1873745665',hostname:'node07',node_uuid:'edbf9c62-728b-11e0-bf0e-3d25383f7ed3'})
,(sc7)-[:IS_PART_OF_CLUSTER]->(c)
,(sc8:Controller{serialnumber:'7000474910',system_id:'1873745695',hostname:'node08',node_uuid:'20dbfe67-7832-11e0-afeb-49fcf0b6e6c3'})
,(sc8)-[:IS_PART_OF_CLUSTER]->(c)
,(sc9:Controller{serialnumber:'7000609864',system_id:'1873802756',hostname:'node09',node_uuid:'a8b75397-6690-11e0-b8a0-517da924923d'})
,(sc9)-[:IS_PART_OF_CLUSTER]->(c)
,(sc10:Controller{serialnumber:'7000610021',system_id:'1873791030',hostname:'node10',node_uuid:'f6cf0705-6670-11e0-b8a0-517da924923d'})
,(sc10)-[:IS_PART_OF_CLUSTER]->(c)
,(sc11:Controller{serialnumber:'7000610057',system_id:'1873784128',hostname:'node11',node_uuid:'551b1bf8-663d-11e0-b8a0-517da924923d'})
,(sc11)-[:IS_PART_OF_CLUSTER]->(c)
,(sc12:Controller{serialnumber:'7000609981',system_id:'1873778164',hostname:'node12',node_uuid:'f6062d6c-663e-11e0-9b53-cd0ece6aa2ce'})
,(sc12)-[:IS_PART_OF_CLUSTER]->(c)
,(sc13:Controller{serialnumber:'7000610033',system_id:'1873778186',hostname:'node13',node_uuid:'ed0e61c5-6670-11e0-b07f-933da0385fdc'})
,(sc13)-[:IS_PART_OF_CLUSTER]->(c)
,(sc14:Controller{serialnumber:'7000610069',system_id:'1873784175',hostname:'node14',node_uuid:'8623ea28-66ae-11e0-ab9d-5fdc7f30dee7'})
,(sc14)-[:IS_PART_OF_CLUSTER]->(c)
,(sc15:Controller{serialnumber:'7000606109',system_id:'1873778197',hostname:'node15',node_uuid:'b4349a83-6682-11e0-ab9d-5fdc7f30dee7'})
,(sc15)-[:IS_PART_OF_CLUSTER]->(c)
,(sc16:Controller{serialnumber:'7000610045',system_id:'1873784157',hostname:'node16',node_uuid:'67d80db8-663d-11e0-9b53-cd0ece6aa2ce'})
,(sc16)-[:IS_PART_OF_CLUSTER]->(c)
,(sc17:Controller{serialnumber:'7001246085',system_id:'2014175904',hostname:'node19',node_uuid:'1c792588-ff4e-11db-94fe-3b91dd7dd242'})
,(sc17)-[:IS_PART_OF_CLUSTER]->(c)
,(sc18:Controller{serialnumber:'7001246097',system_id:'2014176797',hostname:'node20',node_uuid:'3ae9e7ae-ff44-11db-864d-af2af862bba3'})
,(sc18)-[:IS_PART_OF_CLUSTER]->(c)
RETURN c,sc1,sc2,sc3,sc4,sc5,sc6,sc7,sc8,sc9,sc10,sc11,sc12,sc13,sc14,sc15,sc16,sc17,sc18
返回的行数：0
Cypher查询用于创建节点：
CREATE (c:Cluster{cluster_name:'mycluster',cluster_uuid:'7bd4f66d-5faf-11db-8d0d-000e0cba569c'})
,(sc1:Controller{serialnumber:'7000610071',system_id:'1873784171',hostname:'node01',node_uuid:'7cd70205-66ae-11e0-a4a9-0deba859517d'})
,(sc1)-[:IS_PART_OF_CLUSTER]->(c)
,(sc2:Controller{serialnumber:'7000606111',system_id:'1873778118',hostname:'node02',node_uuid:'b954f0a1-6682-11e0-b8a0-517da924923d'})
,(sc2)-[:IS_PART_OF_CLUSTER]->(c)
,(sc3:Controller{serialnumber:'7000561878',system_id:'1873772083',hostname:'node03',node_uuid:'ac293586-6690-11e0-b8a0-517da924923d'})
,(sc3)-[:IS_PART_OF_CLUSTER]->(c)
,(sc4:Controller{serialnumber:'800000075807',system_id:'1873784143',hostname:'node04',node_uuid:'e8d6c7e5-663e-11e0-b8a0-517da924923d'})
,(sc4)-[:IS_PART_OF_CLUSTER]->(c)
,(sc5:Controller{serialnumber:'7000477261',system_id:'1873745662',hostname:'node05',node_uuid:'1d1ecc64-728c-11e0-bf0e-3d25383f7ed3'})
,(sc5)-[:IS_PART_OF_CLUSTER]->(c)
,(sc6:Controller{serialnumber:'7000477273',system_id:'1873745654',hostname:'node06',node_uuid:'140fb0f9-728c-11e0-afeb-49fcf0b6e6c3'})
,(sc6)-[:IS_PART_OF_CLUSTER]->(c)
,(sc7:Controller{serialnumber:'7000474908',system_id:'1873745665',hostname:'node07',node_uuid:'edbf9c62-728b-11e0-bf0e-3d25383f7ed3'})
,(sc7)-[:IS_PART_OF_CLUSTER]->(c)
,(sc8:Controller{serialnumber:'7000474910',system_id:'1873745695',hostname:'node08',node_uuid:'20dbfe67-7832-11e0-afeb-49fcf0b6e6c3'})
,(sc8)-[:IS_PART_OF_CLUSTER]->(c)
,(sc9:Controller{serialnumber:'7000609864',system_id:'1873802756',hostname:'node09',node_uuid:'a8b75397-6690-11e0-b8a0-517da924923d'})
,(sc9)-[:IS_PART_OF_CLUSTER]->(c)
,(sc10:Controller{serialnumber:'7000610021',system_id:'1873791030',hostname:'node10',node_uuid:'f6cf0705-6670-11e0-b8a0-517da924923d'})
,(sc10)-[:IS_PART_OF_CLUSTER]->(c)
,(sc11:Controller{serialnumber:'7000610057',system_id:'1873784128',hostname:'node11',node_uuid:'551b1bf8-663d-11e0-b8a0-517da924923d'})
,(sc11)-[:IS_PART_OF_CLUSTER]->(c)
,(sc12:Controller{serialnumber:'7000609981',system_id:'1873778164',hostname:'node12',node_uuid:'f6062d6c-663e-11e0-9b53-cd0ece6aa2ce'})
,(sc12)-[:IS_PART_OF_CLUSTER]->(c)
,(sc13:Controller{serialnumber:'7000610033',system_id:'1873778186',hostname:'node13',node_uuid:'ed0e61c5-6670-11e0-b07f-933da0385fdc'})
,(sc13)-[:IS_PART_OF_CLUSTER]->(c)
,(sc14:Controller{serialnumber:'7000610069',system_id:'1873784175',hostname:'node14',node_uuid:'8623ea28-66ae-11e0-ab9d-5fdc7f30dee7'})
,(sc14)-[:IS_PART_OF_CLUSTER]->(c)
,(sc15:Controller{serialnumber:'7000606109',system_id:'1873778197',hostname:'node15',node_uuid:'b4349a83-6682-11e0-ab9d-5fdc7f30dee7'})
,(sc15)-[:IS_PART_OF_CLUSTER]->(c)
,(sc16:Controller{serialnumber:'7000610045',system_id:'1873784157',hostname:'node16',node_uuid:'67d80db8-663d-11e0-9b53-cd0ece6aa2ce'})
,(sc16)-[:IS_PART_OF_CLUSTER]->(c)
,(sc17:Controller{serialnumber:'7001246085',system_id:'2014175904',hostname:'node19',node_uuid:'1c792588-ff4e-11db-94fe-3b91dd7dd242'})
,(sc17)-[:IS_PART_OF_CLUSTER]->(c)
,(sc18:Controller{serialnumber:'7001246097',system_id:'2014176797',hostname:'node20',node_uuid:'3ae9e7ae-ff44-11db-864d-af2af862bba3'})
,(sc18)-[:IS_PART_OF_CLUSTER]->(c)
RETURN c,sc1,sc2,sc3,sc4,sc5,sc6,sc7,sc8,sc9,sc10,sc11,sc12,sc13,sc14,sc15,sc16,sc17,sc18
创建了19个节点，18个关系。
现在，当我再次运行第一个查询时，需要一分钟，最终将返回“未知错误”。
Cypher查询：
MATCH (c:Cluster{cluster_name:'mycluster',cluster_uuid:'7bd4f66d-5faf-11db-8d0d-000e0cba569c'})
,(sc1:Controller{serialnumber:'7000610071',system_id:'1873784171',hostname:'node01',node_uuid:'7cd70205-66ae-11e0-a4a9-0deba859517d'})
,(sc1)-[:IS_PART_OF_CLUSTER]->(c)
,(sc2:Controller{serialnumber:'7000606111',system_id:'1873778118',hostname:'node02',node_uuid:'b954f0a1-6682-11e0-b8a0-517da924923d'})
,(sc2)-[:IS_PART_OF_CLUSTER]->(c)
,(sc3:Controller{serialnumber:'7000561878',system_id:'1873772083',hostname:'node03',node_uuid:'ac293586-6690-11e0-b8a0-517da924923d'})
,(sc3)-[:IS_PART_OF_CLUSTER]->(c)
,(sc4:Controller{serialnumber:'800000075807',system_id:'1873784143',hostname:'node04',node_uuid:'e8d6c7e5-663e-11e0-b8a0-517da924923d'})
,(sc4)-[:IS_PART_OF_CLUSTER]->(c)
,(sc5:Controller{serialnumber:'7000477261',system_id:'1873745662',hostname:'node05',node_uuid:'1d1ecc64-728c-11e0-bf0e-3d25383f7ed3'})
,(sc5)-[:IS_PART_OF_CLUSTER]->(c)
,(sc6:Controller{serialnumber:'7000477273',system_id:'1873745654',hostname:'node06',node_uuid:'140fb0f9-728c-11e0-afeb-49fcf0b6e6c3'})
,(sc6)-[:IS_PART_OF_CLUSTER]->(c)
,(sc7:Controller{serialnumber:'7000474908',system_id:'1873745665',hostname:'node07',node_uuid:'edbf9c62-728b-11e0-bf0e-3d25383f7ed3'})
,(sc7)-[:IS_PART_OF_CLUSTER]->(c)
,(sc8:Controller{serialnumber:'7000474910',system_id:'1873745695',hostname:'node08',node_uuid:'20dbfe67-7832-11e0-afeb-49fcf0b6e6c3'})
,(sc8)-[:IS_PART_OF_CLUSTER]->(c)
,(sc9:Controller{serialnumber:'7000609864',system_id:'1873802756',hostname:'node09',node_uuid:'a8b75397-6690-11e0-b8a0-517da924923d'})
,(sc9)-[:IS_PART_OF_CLUSTER]->(c)
,(sc10:Controller{serialnumber:'7000610021',system_id:'1873791030',hostname:'node10',node_uuid:'f6cf0705-6670-11e0-b8a0-517da924923d'})
,(sc10)-[:IS_PART_OF_CLUSTER]->(c)
,(sc11:Controller{serialnumber:'7000610057',system_id:'1873784128',hostname:'node11',node_uuid:'551b1bf8-663d-11e0-b8a0-517da924923d'})
,(sc11)-[:IS_PART_OF_CLUSTER]->(c)
,(sc12:Controller{serialnumber:'7000609981',system_id:'1873778164',hostname:'node12',node_uuid:'f6062d6c-663e-11e0-9b53-cd0ece6aa2ce'})
,(sc12)-[:IS_PART_OF_CLUSTER]->(c)
,(sc13:Controller{serialnumber:'7000610033',system_id:'1873778186',hostname:'node13',node_uuid:'ed0e61c5-6670-11e0-b07f-933da0385fdc'})
,(sc13)-[:IS_PART_OF_CLUSTER]->(c)
,(sc14:Controller{serialnumber:'7000610069',system_id:'1873784175',hostname:'node14',node_uuid:'8623ea28-66ae-11e0-ab9d-5fdc7f30dee7'})
,(sc14)-[:IS_PART_OF_CLUSTER]->(c)
,(sc15:Controller{serialnumber:'7000606109',system_id:'1873778197',hostname:'node15',node_uuid:'b4349a83-6682-11e0-ab9d-5fdc7f30dee7'})
,(sc15)-[:IS_PART_OF_CLUSTER]->(c)
,(sc16:Controller{serialnumber:'7000610045',system_id:'1873784157',hostname:'node16',node_uuid:'67d80db8-663d-11e0-9b53-cd0ece6aa2ce'})
,(sc16)-[:IS_PART_OF_CLUSTER]->(c)
,(sc17:Controller{serialnumber:'7001246085',system_id:'2014175904',hostname:'node19',node_uuid:'1c792588-ff4e-11db-94fe-3b91dd7dd242'})
,(sc17)-[:IS_PART_OF_CLUSTER]->(c)
,(sc18:Controller{serialnumber:'7001246097',system_id:'2014176797',hostname:'node20',node_uuid:'3ae9e7ae-ff44-11db-864d-af2af862bba3'})
,(sc18)-[:IS_PART_OF_CLUSTER]->(c)
RETURN c,sc1,sc2,sc3,sc4,sc5,sc6,sc7,sc8,sc9,sc10,sc11,sc12,sc13,sc14,sc15,sc16,sc17,sc18
返回Unknown Error
答案 0 :(得分：1)
您的MATCH查询是复杂的。没有必要指定每个节点。以下查询返回集群及其相关控制器：
MATCH (c:Cluster{cluster_name:'mycluster',cluster_uuid:'7bd4f66d-5faf-11db-8d0d-000e0cba569c'})<-[:IS_PART_OF_CLUSTER]-(sc:Controller)
WITH c, collect(sc) as controllers
RETURN c as cluster, controllers