Neo4j

Question

查询的第一部分是查找 C 类型的节点，这些节点有 X 个 D[ 的子节点 类型，我有这个工作：

MATCH (Parent:$C)
WITH Parent, [(Child:$D)-[]-(Parent) | Child] as children
WITH Parent, children, size(children) as ChildCount
WHERE ChildCount > $X

RETURN Parent

现在我想获取节点 A 并找到从第一个查询返回的一些节点的路径。我的查询如下所示：

//Part A - this one is already working
MATCH (Parent:FullAddress)
WITH Parent, [(Child:Company)-[]-(Parent) | Child] as children
WITH Parent, children, size(children) as ChildCount
WHERE ChildCount > 10
WITH Parent as Target

//Part B - this part doesn't work
MATCH Path = (S:Ship)-[*2]-(Target)
WHERE ID(S)=164758
RETURN nodes(Path)
LIMIT 100

预期的结果是向我显示 Ship 和 ID=164758 之间的路径和来自 查询 A 的节点之一。我确定这条路径存在，因为我在选择查询参数之前手动检查了它。

当前结果是 neo4j 加载到无穷大。

Answer 1

我猜查询对于 neo4j 来说太大了，因为我有 5,000,000 多个节点。

Neo4j | Cypher - 给定节点 A，显示到 C 类型节点 B 的路径，该节点 B 有超过 X 个 D 类型的子节点

Neo4j | Cypher - given node A, show me path to node B of C type which has more than X children of D type

cypher