I am limited by production data permission, privacy or size and I need synthetic data for tests

This video demonstrates how generate synthetic test data.

Most of the generation rules are chosen automatically and you can fine tune them according to business needs. You can also import metadata from an existing database to speed up the definition process. Running data generation to a new database in a fast, automated, self-service process, that can be configured once and run many times.

How fast? 1 million rows are generated in few seconds.