Updating all properties of the node

If we want to update all properties of the node, there is a practical shortcut:

MATCH (n {id: 1})
SET n = {id: 1, name: "My name", age: 30, address: "Earth, Universe"}
RETURN n

This leads to the following result:

{
  "name": "My name",
  "address": "Earth, Universe",
  "id": 1,
  "age": 30
}

In some cases, it might be painful to repeat existing properties to be sure not to erase the id, for instance. In that case, the += syntax is the way to go:

MATCH (n {id: 1})
SET n += {gender: "F", name: "Another name"}
RETURN n

This again works as expected, adding the gender property and updating the value of the name field:

{
  "name": "Another name",
  "address": "Earth, Universe",
  "id": 1,
  "gender": "F",
  "age": 30
}