Neo4j 限制非常数

Question

我想问一下是否可以限制一段查询返回的节点为非常数，这意味着 - 我希望限制取决于查询返回的某个变量，例如邻居计数的 30%节点。

Answer 1

有点丑，但是这样的呢？

MATCH n-[:type]->(neighbor)
WITH n, toInt(count(neighbor) * 0.3) AS limit
MATCH n-[:type]->(neighbor)
WITH n, collect(neighbor)[1..limit] AS neighbors
UNWIND neighbors AS neighbor
RETURN n, neighbor

Neo4j 限制非常数

Neo4j limit with non-constant

limit

neo4j