Many to One Query in jpa springboot
Many to One Query in jpa springboot In JPA and Spring Boot, a "many to one" relationship is a type of entity relationship where multiple instances of one entity are related to a single instance of another entity. For example, a customer can have many orders, but each order is associated with only one customer. To perform a "many to one" query in JPA and Spring Boot, you can use the @ManyToOne annotation to define the relationship between entities. Then, you can use a JOIN clause in your JPQL query to fetch data from both entities. For example, let's say we have two entities: Order and Customer . The Order entity has a many-to-one relationship with the Customer entity, as follows: java Copy code @Entity @Table(name = "orders") public class Order { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @ManyToOne @JoinColumn(name = "customer_id") private Customer customer; // othe...