apoc.nodes.relationship.types
语法 |
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描述 |
返回给定 |
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参数 |
名称 |
类型 |
描述 |
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要返回连接关系类型的节点。 |
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如果不为空，提供要返回的关系类型允许列表。关系类型使用 APOC 的关系方向模式语法表示； |
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返回 |
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输出参数
| 名称 | 类型 | 描述 |
|---|---|---|
value |
LIST<MAP> |
一个包含 |
使用示例
本节示例基于以下示例图
MERGE (michael:Person {name: "Michael"})
WITH michael
CALL {
WITH michael
UNWIND range(0, 100) AS id
MERGE (p:Person {name: "Person" + id})
MERGE (michael)-[:KNOWS]-(p)
RETURN count(*) AS friends
}
CALL {
WITH michael
UNWIND range(0, 50) AS id
MERGE (p:Person {name: "Person" + id})
MERGE (michael)-[:FOLLOWS]-(p)
RETURN count(*) AS follows
}
RETURN friends, follows;| friends | follows |
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101 |
51 |
MATCH (p1:Person)
WHERE p1.name IN ["Michael", "Person30", "Person60"]
WITH collect(p1) AS people
UNWIND apoc.nodes.relationship.types(people, "KNOWS>|FOLLOWS") AS output
RETURN output;| 输出 |
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{node: (:Person {name: "Michael"}), types: ["KNOWS", "FOLLOWS"]} |
{node: (:Person {name: "Person30"}), types: ["FOLLOWS"]} |
{node: (:Person {name: "Person60"}), types: []} |