map.submap

flex.map.submap(map, keys)

WITH {name: 'Alice', age: 30, email: 'alice@example.com', city: 'NYC'} AS user
RETURN flex.map.submap(user, ['name', 'email']) AS contact

contact
---------------------------------
{name: 'Alice', email: 'alice@example.com'}

MATCH (p:Product)
RETURN flex.map.submap(properties(p), ['id', 'name', 'price']) AS summary

MATCH (u:User {id: $userId})
WITH properties(u) AS allProps
RETURN flex.map.submap(allProps, ['id', 'name', 'email', 'role']) AS userInfo

WITH {a: 1, b: 2} AS map
RETURN flex.map.submap(map, ['a', 'c', 'd']) AS result

result
------
{a: 1}

WITH ['name', 'price', 'category'] AS requestedFields
MATCH (p:Product {id: 123})
RETURN flex.map.submap(properties(p), requestedFields) AS response