[英]How to count how many nodes have input and output degree greater than 2 in Neo4j?
我想知道使用Cypher在Neo4j中有多少个节点的输入和输出度大于2。
MATCH (n)
WHERE size((n)-->()) > 2 AND size((n)<--()) > 2
RETURN count(n)
这应该可以解决问题:
MATCH (n)
OPTIONAL MATCH (n)-[out]->()
OPTIONAL MATCH (n)<-[in]-()
WITH n, COUNT(out) AS outDegree, COUNT(in) AS inDegree
WHERE outDegree > 2
AND inDegree > 2
RETURN COUNT(n)
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