neo4j的cypher操作
时间: 2023-11-06 09:49:17 浏览: 228
Cypher是Neo4j图数据库的查询语言和数据操作语言。它允许你以图形方式表示和查询数据模式、关系和属性。以下是一些常见的Cypher操作:
1. 创建节点和关系:
```
CREATE (node:Label {property: value})-[relationship:REL_TYPE]->(otherNode)
```
2. 查询节点和关系:
```
MATCH (node:Label)-[relationship:REL_TYPE]->(otherNode)
WHERE node.property = value
RETURN node, relationship, otherNode
```
3. 更新节点属性:
```
MATCH (node:Label)
WHERE node.property = value
SET node.property = newValue
```
4. 删除节点和关系:
```
MATCH (node:Label)-[relationship:REL_TYPE]->(otherNode)
WHERE node.property = value
DELETE node, relationship, otherNode
```
5. 模式匹配和过滤:
```
MATCH (node:Label)
WHERE node.property = value
RETURN node
LIMIT 10
```
6. 聚合和排序:
```
MATCH (node:Label)
RETURN node.property, COUNT(node) AS count
ORDER BY count DESC
```
这只是一些基本的Cypher操作,你可以根据具体需求进行更复杂的查询和操作。
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