No, Atlan modifies the query at runtime to retrieve masked information directly from the data source.
For example, the original query is as follows:
SELECT customer_name, address FROM customers;In this case, if address is classified as PII with a masking data policy, Atlan will modify the query sent to the data source as follows:
SELECT customer_name, REPLACE(address, 'xxx') FROM customers;This ensures that the data returned from the data source is already masked.