Dataset column lookups

You can use the from_dataset function in a formula field. From the docs:

from_dataset("dataset", "column", join_criteria) => Fetches a value from a dataset.

For example, from_dataset("People", "name", id: person_id) returns the value of the "name" column from the "People" dataset where the id column matches the person_id column in the current schema.

Here's a link to the docs for formulas: http://mockaroo.com/help/formulas