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apoc.graph.fromDB

此过程返回只能由其他 APOC 过程访问的虚拟节点和关系。有关更多信息，请参阅虚拟节点与关系（图投影）。

详情
语法	`apoc.graph.fromDB(name, props) :: (graph)`
描述	通过从给定数据库返回的数据中提取所有 `NODE` 和 `RELATIONSHIP` 值来生成虚拟子图。
输入参数	名称	类型	描述
	`name`	`STRING`	结果图的名称。
	`props`	`MAP`	结果图中要存在的属性。
返回参数	名称	类型	描述
返回参数	`graph`	`MAP`	结果图。

使用示例

本节中的示例基于以下样本图

CREATE (TheMatrix:Movie {title:'The Matrix', released:1999, tagline:'Welcome to the Real World'})
CREATE (Keanu:Person {name:'Keanu Reeves', born:1964})
CREATE (Carrie:Person {name:'Carrie-Anne Moss', born:1967})
CREATE (Laurence:Person {name:'Laurence Fishburne', born:1961})
CREATE (Hugo:Person {name:'Hugo Weaving', born:1960})
CREATE (LillyW:Person {name:'Lilly Wachowski', born:1967})
CREATE (LanaW:Person {name:'Lana Wachowski', born:1965})
CREATE (JoelS:Person {name:'Joel Silver', born:1952})
CREATE
(Keanu)-[:ACTED_IN {roles:['Neo']}]->(TheMatrix),
(Carrie)-[:ACTED_IN {roles:['Trinity']}]->(TheMatrix),
(Laurence)-[:ACTED_IN {roles:['Morpheus']}]->(TheMatrix),
(Hugo)-[:ACTED_IN {roles:['Agent Smith']}]->(TheMatrix),
(LillyW)-[:DIRECTED]->(TheMatrix),
(LanaW)-[:DIRECTED]->(TheMatrix),
(JoelS)-[:PRODUCED]->(TheMatrix);

CALL apoc.graph.fromDB("all", {});

结果
graph
{name: "all", relationships: [[:ACTED_IN {roles: ["Neo"]}], [:ACTED_IN {roles: ["Trinity"]}], [:ACTED_IN {roles: ["Morpheus"]}], [:ACTED_IN {roles: ["Agent Smith"]}], [:DIRECTED], [:DIRECTED], [:PRODUCED]], nodes: [(:Movie {tagline: "Welcome to the Real World", title: "The Matrix", released: 1999}), (:Person {name: "Keanu Reeves", born: 1964}), (:Person {name: "Carrie-Anne Moss", born: 1967}), (:Person {name: "Laurence Fishburne", born: 1961}), (:Person {name: "Hugo Weaving", born: 1960}), (:Person {name: "Lilly Wachowski", born: 1967}), (:Person {name: "Lana Wachowski", born: 1965}), (:Person {name: "Joel Silver", born: 1952})], properties: {}}

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