Maps

{name: 'Alice', age: 38,
 address: {city: 'London', residential: true}}

Literal maps are declared in curly braces much like property maps. Lists are supported.

WITH {person: {name: 'Anne', age: 25}} AS p
RETURN p.person.name

Access the property of a nested map.

MERGE (p:Person {name: $map.name})
  ON CREATE SET p = $map

Maps can be passed in as parameters and used either as a map or by accessing keys.

MATCH (matchedNode:Person)
RETURN matchedNode

Nodes and relationships are returned as maps of their data.

map.name, map.age, map.children[0]

Map entries can be accessed by their keys. Invalid keys result in an error.