Select a unique names from Users that have more than 3 Articles. Spring Data, H2 - spring-boot

Question

I use: Spring Boot, Spring Data, and H2 (in-memory) DataBase.
DB TABLES:
CREATE TABLE user
(
id INT AUTO_INCREMENT,
name VARCHAR(250) NOT NULL,
age INT NOT NULL,
PRIMARY KEY (id)
);
CREATE TABLE article
(
id INT AUTO_INCREMENT,
text TEXT NOT NULL,
color ENUM ('red', 'green', 'blue', 'yellow', 'pink') NOT NULL,
user_id INT,
PRIMARY KEY (id),
FOREIGN KEY (user_id) REFERENCES user (id) ON DELETE CASCADE ON UPDATE CASCADE
);
In ArticleRepository exploited such query:
SELECT u.name, a.user_id, count() FROM user AS u INNER JOIN article AS a ON u.id = a.user_id GROUP BY a.user_id HAVING COUNT() > 3;
#Repository
public interface ArticleRepository extends JpaRepository<Article, Integer> {
#Query(value = "SELECT u.name, a.user_id, count(*) FROM user AS u INNER JOIN article AS a ON u.id = a.user_id GROUP BY a.user_id HAVING COUNT(*) > 3", nativeQuery = true)
List<Article> findUserNamesByArticlesCountMoreThan();
}
After request I receive the error:
In Postman:
"error": "Internal Server Error", "message": "could not execute query;
SQL [SELECT u.name, a.user_id, count(text) FROM user AS u INNER JOIN
article AS a ON u.id = a.user_id GROUP BY a.user_id HAVING COUNT(*) >
3]; nested exception is org.hibernate.exception.SQLGrammarException:
could not execute query",
In IntelliJ Idea:
02:54:24.681 [http-nio-9090-exec-1] WARN SqlExceptionHelper - SQL
Error: 42122, SQLState: 42S22 02:54:24.681 [http-nio-9090-exec-1]
ERROR SqlExceptionHelper - Column "id" not found [42122-197]
02:54:24.703 [http-nio-9090-exec-1] ERROR [dispatcherServlet] -
Servlet.service() for servlet [dispatcherServlet] in context with path
[] threw exception [Request processing failed; nested exception is
org.springframework.dao.InvalidDataAccessResourceUsageException: could
not execute query; SQL [SELECT u.name, a.user_id, count(text) FROM
user AS u INNER JOIN article AS a ON u.id = a.user_id GROUP BY
a.user_id HAVING COUNT(*) > 3]; nested exception is
org.hibernate.exception.SQLGrammarException: could not execute query]
with root cause org.h2.jdbc.JdbcSQLException: Column "id" not found
[42122-197] at
org.h2.message.DbException.getJdbcSQLException(DbException.java:357)
at org.h2.message.DbException.get(DbException.java:179) at
org.h2.message.DbException.get(DbException.java:155) at
org.h2.jdbc.JdbcResultSet.getColumnIndex(JdbcResultSet.java:3148) at
org.h2.jdbc.JdbcResultSet.get(JdbcResultSet.java:3247) at
org.h2.jdbc.JdbcResultSet.getInt(JdbcResultSet.java:346)..............
Help me to resolve this problem, and find a mistake.
Entities:
#Entity
#Data
#NoArgsConstructor
#AllArgsConstructor
#Table(name = "article")
public class Article {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "id", unique = true, nullable = false)
private Integer id;
#Column(name = "text", nullable = false)
private String text;
#Column(name = "color", nullable = false, unique = true)
#Enumerated(EnumType.STRING)
private Color color;
#JsonIgnore
#ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL )
#JoinColumn(name = "user_id", referencedColumnName="id")
private User user;
}
.
#Entity
#Data
#NoArgsConstructor
#AllArgsConstructor
#ToString(exclude = "articles")
#Table(name = "user")
public class User {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "id", nullable = false)
private Integer id;
#Column(name = "name", nullable = false)
private String name;
#Column(name = "age", nullable = false)
private Integer age;
#JsonIgnore
#OneToMany(fetch = FetchType.LAZY, mappedBy = "user")
private Set<Article> articles;
}
Service:
#Service
public class ArticleService {
private ArticleRepository articleRepository;
#Autowired
public ArticleService(ArticleRepository articleRepository) {
this.articleRepository = articleRepository;
}
public List<Article> findAllUserNamesByArticlesMoreThan() {
return articleRepository.findUserNamesByArticlesCountMoreThan(); }}
ArticleDtoService:
#Service
public class ArticleDtoService {
private ArticleService articleService;
#Autowired
public ArticleDtoService(ArticleService articleService) {
this.articleService = articleService;
}
public ResponseEntity<List<ArticleDto>> getAllUserNamesByArticlesMoreThan() {
List<Article> articles = articleService.findAllUserNamesByArticlesMoreThan();
Link link = linkTo(methodOn(ArticleController.class).getAllUserNamesListByArticlesMoreThan()).withSelfRel();
return new ResponseEntity<>(createArticleDtoList(articles, link), HttpStatus.OK); }}
ArticleController:
#RestController
public class ArticleController {
private final ArticleDtoService articleDtoService;
#Autowired
public ArticleController(ArticleDtoService articleDtoService) {
this.articleDtoService = articleDtoService;
}
#GetMapping(value = "/api/articles/count")
public ResponseEntity<List<ArticleDto>> getAllUserNamesListByArticlesMoreThan() {
return articleDtoService.getAllUserNamesByArticlesMoreThan(); }}
ArticleDto:
public class ArticleDto extends ResourceSupport {
public Article article;
public ArticleDto(Article article, Link selfLink) {
this.article = article;
add(selfLink); }}