jpa entity introduction

JPA Criteria API The Criteria API is one of the most common ways of constructing queries for entities and their persistent state.…

JPA JPQL Basic Operations JPQL allows us to create both static as well as dynamic queries. Now, we will perform some basic…

JPA Criteria GROUP BY Clause The GROUP BY clause is used to collect data from one or more tables and arrange them…

JPA JPQL Bulk Data Operations In the previous section, we fetched single column only. Now, we will learn how to handle bulk…

JPA Criteria Having clause The HAVING clause is used with GROUP BY clause to filter the data in a table. In Criteria…

JPA JPQL Introduction The JPQL (Java Persistence Query Language) is an object-oriented query language which is used to perform database operations on…

JPA ORDER BY Clause The ORDER BY clause is used to sort the data and arrange them either in ascending or descending…

JPA List Mapping A List is an interface which is used to insert and delete elements on the basis of index. It…

JPA Criteria SELECT Clause The SELECT clause is used to fetch the data from database. The data can be retrieved in the…

JPA Many-To-Many Mapping The Many-To-Many mapping represents a collection-valued association where any number of entities can be associated with a collection of…