Spring boot H2 database application - spring

Question

I have created a sample project with following code. Even if i am not providing table create statement in the data.sql, it is creating the table. how to stop that. Sample code is present below
Can you please let me know what I am doing wrong? I have removed the import statements below as the post was not allowing to put so much code here.
package com.example.demo;
// Model class
#Entity
#Table(name="reservation")
public class Reservation {
#Id
private Long id;
#Column(name="user_id")
private Long userId;
#Column(name="party_size")
private int partySize;
#Column(name="restaurant_id")
private Long restaurantId;
#Column(name="date")
private LocalDateTime dt;
public Reservation() {}
public Reservation(Long id, Long userId, int partySize) {
this.id = id;
this.userId = userId;
this.partySize = partySize;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
public int getPartySize() {
return partySize;
}
public void setPartySize(int partySize) {
this.partySize = partySize;
}
public Long getRestaurantId() {
return restaurantId;
}
public void setRestaurantId(Long restaurantId) {
this.restaurantId = restaurantId;
}
public LocalDateTime getDt() {
return dt;
}
public void setDt(LocalDateTime dt) {
this.dt = dt;
}
}
package com.example.demo;
#SpringBootApplication
public class ReservationApp {
public static void main(String[] args) {
SpringApplication.run(ReservationApp.class, args);
}
}
package com.example.demo;
#RestController
#RequestMapping("/v1")
public class ReservationController {
#Autowired
private ReservationService reservationService;
// ------------ Retrieve all reservations ------------
#RequestMapping(value = "/reservations", method = RequestMethod.GET)
public List getAllReservations() {
return reservationService.getAllReservations();
}
package com.example.demo;
import org.springframework.data.repository.CrudRepository;
public interface ReservationRepository extends CrudRepository<Reservation,String> {
}
package com.example.demo;
#Service
public class ReservationService {
#Autowired
private ReservationRepository reservationRepository;
// Retrieve all rows from table and populate list with objects
public List getAllReservations() {
List reservations = new ArrayList<>();
reservationRepository.findAll().forEach(reservations::add);
return reservations;
}
}

Answer 1

try to remove the spring boot hibernate configuration
spring.jpa.hibernate.ddl-auto = update
Which is able of creating/updating the database schema from entities

Answer 2

To disable automatic DDL generation, set the following property to false in application.properties:
spring.jpa.generate-ddl = false
For more information and fine-grained control, please see the documentation.

Answer 3

Set the ddl generation to none in the application.properties:
spring.jpa.hibernate.ddl-auto=none