Question

java.sql.SQLSyntaxErrorException: No such column: id

表已包含列id

我正在尝试使以下本机SQL查询与Repository类中的MariaDB SQL内的预期结果一起运行：

SELECT name
FROM table1 t1
WHERE t1.table2_id IN (
  SELECT id
  FROM table2 t2
  WHERE t2.column1_number = 1 AND
        t2.id IS NOT NULL
  )
ORDER BY t1.name

实体类如下：


@Entity
@Table(name = "table1")
public class Table1 {

    @Column(nullable = false)
    private String name;

    @Column(nullable = false)
    private Integer number;

    @ManyToOne
    @JoinColumn(name = "table2_id")
    private Table2 table2;

   // Getters and Setters
}


@Entity
@Table(name="table2")
public class Table2 {
    private  Integer id;
    private  Integer column1_number;

    @Override
    public Integer getId() {
        return id;
    }

    @Override
    public void setId(Integer id) {
        this.id = id;
    }

   // Getters and Setters
}

存储库为：


@Repository
public interface Table1Repository extends JpaRepository<Table1, Integer> {

    @Query(value = "SELECT name FROM table1 t1 WHERE t1.table2_id IN (SELECT id FROM table2 t2 WHERE t2.column1_number = ?1 AND t2.id IS NOT NULL) ORDER BY t1.name", nativeQuery = true)
    List<Table1> findByNumberOrderByName(Integer number);
}

关于为什么在运行时出现此错误的任何想法？在编译时不会发生此错误。

Answer 1

@Query(value = "SELECT name FROM table1 t1 WHERE t1.table2_id IN (SELECT id FROM table2 t2 WHERE t2.column1_number = ?1 AND t2.id IS NOT NULL) ORDER BY t1.name", nativeQuery = true)
    List<Table1> findByNumberOrderByName(Integer number);

应该是List<String>，而不是List<Table1>

因此解决方案是：

@Query(value = "SELECT name FROM table1 t1 WHERE t1.table2_id IN (SELECT id FROM table2 t2 WHERE t2.column1_number = ?1 AND t2.id IS NOT NULL) ORDER BY t1.name", nativeQuery = true)
    List<String> findByNumberOrderByName(Integer number);

Answer 2

您正在尝试使用id在table2中进行搜索，但是您没有从table1中选择正确的映射列，该列应为 table2_id.id ，因此查询应类似于

SELECT name FROM table1 t1 WHERE t1.table2_id.id IN (SELECT id FROM table2 t2 WHERE t2.column1_number = 1 AND t2.id IS NOT NULL) ORDER BY t1.name

还要注意您正在使用本机查询，这意味着直接查询数据库，因此请确保在数据库表中使用相同的正确名称。

Answer 3

尝试向表1中添加Id元素，并使用如下所示的@Id注释对两个表ID字段进行注释。

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private Long id;

java.sql.SQLSyntaxErrorException：没有这样的列：id

3 个答案: