My Java Spring Boot application adds the suffix '_seq' to table users - mysql

Question

On execution of my spring boot application with MySQL as data source, it fails with below error message
Table 'schema.users_seq' doesn't exist
I have an #Entity class Users with an AUTO_INC field Id
#Entity
#Table(appliesTo = "users")
public class Users {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name="uid")
private long id;
}
Below is my User controller class
#RestController
#RequestMapping("/cm/api/user")
public class UserController {
#Autowired
UsersRepository usersRepository;
#GetMapping("/{username}")
public void getUser(#PathVariable("username") String userName) {
}
#PostMapping("/add")
public void addNewUser(#RequestBody Users users) {
usersRepository.save(users);
}
}
There are some other articles on the same issue, but it all ended with the question if the class has AUTO_INC field.

Answer 1

Your app tries to generate a long ID for your Users entity by retrieving a value from the users_seq. You need to change the #GeneratedValue(strategy = GenerationType.AUTO) according to your DDL structure. As you didn't include that in your post, I can only assume how you mapped it, so I can only recommend that you read this article by Hibernate maintainer Vlad Mihalcea about why you should not use the AUTO JPA GenerationType with MySQL and Hibernate.