DTO projections are the most efficient ones for read operations. Let me show you how to use them in JPQL, Criteria and native queries. You can even use them without a DTO class| Thorben Janssen
JPQL allows you to define database queries based on your entity model. Learn how to use all its features to build powerful queries with JPA and Hibernate.| Thorben Janssen
PostgreSQL offers proprietary datatypes to store JSON documents which are not supported by Hibernate. But you can change that with a UserType.| Thorben Janssen