Neo4J用Cypher删除字段值不带CSV的节点

Question

您好，我想删除所有带有标签GRAPH_OBJECT的节点，它们的属性值（让我们称之为myprop）不在我列出的数值列表中CSV或文本文件。

我如何用Cypher完成这项工作？

Answer 1

这应该工作。

// load csv 
LOAD CSV FROM "file://values.txt" AS row 
// create a collection of the first column turned into numeric values 
WITH collect(toInt(row[0])) AS blacklist 
// find the nodes 
MATCH (node:GRAPH_OBJECT) 
// for any of the properties of the node, if it's value is in our blacklist 
WHERE ANY(property in keys(node) WHERE node[property] IN blacklist) 
// delete node and relationships 
DETACH DELETE node; 

Answer 2

与迈克尔饥饿的代码开始，并与您的评论的更新，我相信这应该工作：

// load csv 
LOAD CSV FROM "file://values.txt" AS row 
// create a collection of the first column turned into numeric values 
WITH collect(toInt(row[0])) AS whitelist 
// find the nodes 
MATCH (node:GRAPH_OBJECT) 
// for any of the properties of the node, if it's value is in our blacklist 
WHERE NOT node.myprop IN whitelist) 
// delete node and relationships 
DETACH DELETE node; 

第一个WHERE子句中迈​​克尔的代码（WHERE ANY(property in keys(node)）似乎只是有这么每个属性上该节点可以搜索，所以如果你只需要搜索myprop，那么这不应该需要。