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获取虚拟节点neo4j apoc的标签值_Neo4j_Cypher_Neo4j Apoc - Fatal编程技术网

获取虚拟节点neo4j apoc的标签值

获取虚拟节点neo4j apoc的标签值,neo4j,cypher,neo4j-apoc,Neo4j,Cypher,Neo4j Apoc,如何检索由apoc proc创建的虚拟节点的标签值? 下面返回节点的id,标签值为null OPTIONAL MATCH (cd:Day) WHERE cd.yyyymmdd= 20190609 call apoc.create.vNode(['Day'],{yyyymmdd:20190609}) yield node as vd WITH Coalesce(cd, vd) as td return ID(td) as id, td.yyyymmdd as f 虚拟节点/关系主要用于

如何检索由apoc proc创建的虚拟节点的标签值? 下面返回节点的id,标签值为null

OPTIONAL MATCH (cd:Day) WHERE cd.yyyymmdd= 20190609 
call  apoc.create.vNode(['Day'],{yyyymmdd:20190609})  yield node as vd
WITH Coalesce(cd, vd) as td  
return ID(td) as id, td.yyyymmdd as f

虚拟节点/关系主要用于可视化。

密码本身无法访问它们。
apoc
中有一系列函数可以访问它们的属性、标签和rel类型

您可以使用访问虚拟和真实、节点、关系的属性

OPTIONAL MATCH (cd:Day) WHERE cd.yyyymmdd= 20190609 
CALL  apoc.create.vNode(['Day'],{yyyymmdd:20190609})  YIELD node AS vd
WITH Coalesce(cd, vd) AS td  
RETURN ID(td) AS id, apoc.any.property(td, 'yyyymmdd') AS f

您没有返回标签字段,那么您如何获得标签的
null
?您是指属性值(
yyyymmdd
)的
null
?没错,yyyymmdd返回空值谢谢,这正是我要找的。