Ecto.Adapters.DynamoDB.Query.scan_or_query-question-mark

You're seeing just the function scan_or_query-question-mark, go back to Ecto.Adapters.DynamoDB.Query module for more information.
Link to this function

scan_or_query?(repo, table, search)

View Source

Returns an atom, :scan or :query, specifying whether the current search will be a DynamoDB scan or a query.