用neo4j完成下面代码CREATE (sue:Person {name:"Sue"}),(anna:Person {name:"Anna"}), (joe:Person {name:"Joe"}), (bob:Person {name:"Bob"}), (sue)-[:KNOWS]->(bob), (sue)-[:KNOWS]->(anna), (sue)-[:KNOWS]->(joe), (joe)-[:KNOWS]->(anna)
时间: 2023-12-10 21:39:06 浏览: 27
以下是使用Cypher语句在Neo4j中创建节点和关系的代码:
```
CREATE (sue:Person {name:"Sue"}), (anna:Person {name:"Anna"}), (joe:Person {name:"Joe"}), (bob:Person {name:"Bob"})
CREATE (sue)-[:KNOWS]->(bob), (sue)-[:KNOWS]->(anna), (sue)-[:KNOWS]->(joe), (joe)-[:KNOWS]->(anna)
```
这个代码块将创建四个Person节点,分别代表Sue、Anna、Joe和Bob。然后,它会创建四个KNOWS关系,连接这些人之间的知晓关系。具体来说,Sue知道Bob、Anna和Joe,而Joe知道Anna。
相关问题
Consider the following Neo4J Cypher CREATE command. CREATE (sue:Person {name:"Sue"}),(anna:Person {name:"Anna"}), (joe:Person {name:"Joe"}), (bob:Person {name:"Bob"}), (sue)-[:KNOWS]->(bob), (sue)-[:KNOWS]->(anna), (sue)-[:KNOWS]->(joe), (joe)-[:KNOWS]->(anna) a. Draw the property graph diagram that would result from executing the command. b. Write a Cypher query that reports the common friends of Anna and Joe. Report the query and the result of running it in the created database.
a. The property graph diagram resulting from executing the command is:
```
(sue)-[:KNOWS]->(bob)
(sue)-[:KNOWS]->(anna)
(sue)-[:KNOWS]->(joe)
(joe)-[:KNOWS]->(anna)
```
```
(sue) ---[:KNOWS]---> (bob)
|
|
[:KNOWS]|
|
V
(anna)
|
[:KNOWS]|
|
V
(joe)
```
b. The Cypher query that reports the common friends of Anna and Joe is:
```
MATCH (anna:Person)-[:KNOWS]->(friend:Person)<-[:KNOWS]-(joe:Person)
WHERE anna.name = 'Anna' AND joe.name = 'Joe'
RETURN friend.name
```
The result of running the query in the created database would be:
```
friend.name
-----------
Sue
```
neo4j与mysql数据库_Neo4j: 迁移MySQL的数据到Neo4j
Neo4j是一种图形数据库,而MySQL是一种关系型数据库。虽然它们的数据存储和查询方式有所不同,但是可以使用一些工具将MySQL的数据迁移到Neo4j中。
以下是迁移MySQL数据到Neo4j的一些步骤:
1. 创建一个Neo4j数据库,可以使用Neo4j Desktop或者通过Neo4j的API来创建。
2. 使用ETL工具,将MySQL中的数据导出为CSV文件,例如使用Pentaho或Talend等工具。
3. 将CSV文件导入到Neo4j中,可以使用Neo4j的LOAD CSV命令或者使用Neo4j的API来实现。
4. 将导入的CSV文件与Neo4j的节点和关系进行映射,可以使用Cypher查询语言来实现。
5. 运行您的应用程序并测试Neo4j数据库是否包含正确的数据。
请注意,迁移MySQL数据到Neo4j中可能需要一些时间和努力,因为数据结构和查询方式有所不同。但是,一旦完成,您将获得更好的数据可视化和更好的性能。