Optimize JPA queries with projections & result transformations. Learn efficient data retrieval & customization in Java Persistence API. Real examples included.
Learn how to create join queries using JPA Criteria Queries easily. Explore a beginner-friendly guide to crafting effective join queries and improving your database querying skills with JPA's criteria API.
JPA specification provides different ways to select values in criteria query. select, multiselect and tuple queries are used to select single or multiple values from one or more entities
Criteria Queries in JPA are type-safe and portable way of fetching data. It provides methods such as Criteria Join, Fetch Join, aggregate functions and sub queries to fetch data.