Prev |  | Next

## 15.21. Delete

Removing graph elements — nodes, relationships and properties, is done with `DELETE`.

### 15.21.1. Delete single node

To remove a node from the graph, you can delete it with the `DELETE` clause.

Query.

    START n = node(4)
    DELETE n

Nothing is returned from this query, except the count of affected nodes.

Result

Nodes deleted: 1
0 ms
`(empty result)`

### 15.21.2. Remove a node and connected relationships

If you are trying to remove a node with relationships on it, you have to remove these as well.

Query.

    START n = node(3)
    MATCH n-[r]-()
    DELETE n, r

Nothing is returned from this query, except the count of affected nodes.

Result

Nodes deleted: 1
Relationships deleted: 2
0 ms
`(empty result)`

### 15.21.3. Remove a property

Neo4j doesn’t allow storing `null` in properties. Instead, if no value exists, the property is just not there. So, to remove a property value on a node or a relationship, is also done with `DELETE`.

Query.

    START andres = node(3)
    DELETE andres.age
    RETURN andres

The node is returned, and no property `age` exists on it.

Result

andres
1 row
Properties set: 1
0 ms
`Node[3]{name:"Andres"}`

Copyright © 2013 Neo Technology

Prev | Up | Next
| Home |