AS400 db2上带有JPA的“未知列”

Question

我收到以下错误：

无法执行查询；SQL [select DFBOGARM，sum(KVANTUM1) as KVANTUM1，(sum(dst omk)* 1000/sum(KVANTUM1))as dst omk，(sum(dst akk)* 1000/sum(KVANTUMAKK))as dst akk from nho data。ERHDSTV1其中DFS val in(52，55)group by DFBOGARM order by DFBOGARM]；嵌套异常为org . hibernate . exception . sqlgrammarexception:无法执行查询

原因：org.hibernate.exception。SQLGrammarException:无法执行查询

原因:com . IBM . as 400 . access . as 400 jdbcsqlsyntaxerrorexception:检测到未定义的列名。

查询实现：

public interface DistributionRepository extends JpaRepository<ERHDSTV1, Long> {

@Query(value="select  "
        + "    DFBOGARM, "
        + "    sum(KVANTUM1) as KVANTUM1, "
        + "    (sum(DSTOMK) * 1000 / sum(KVANTUM1)) as DSTOMK, "
        + " (sum(DSTAKK) * 1000 / sum(KVANTUMAKK)) as DSTAKK "
        + "from NHODATA.ERHDSTV1 "
        + "where DFSALVAR in(52, 55) "
        + "group by DFBOGARM "
        + "order by DFBOGARM", nativeQuery = true)
List<ERHDSTV1> findSummedValuesFor52and55();}

实体类：

@Entity
@IdClass(ERHDSTV1Id.class)
@Table(name = "ERHDSTV1")
@Data
public class ERHDSTV1 {
   @Id
   @Column(name = "DFBOGARM")
   private String yearMonth;
   @Id
   @Column(name = "DFSALVAR")
   private Long salesType;
   @Column(name = "KVANTUM1")
   private Long volumeOne;
   @Column(name = "DSTOMK")
   private Long distributionCosts;
   @Column(name = "DSTMDN")
   private Long distributionMedian;
   @Column(name = "KVANTUMAKK")
   private Long volumeAccumulated;
   @Column(name = "DSTAKK")
   private Long distributionAccumulated;
   @Column(name = "DSTMNDAKK")
   private Long distributionMedianAccumulated;
}

从 sql 工具执行时，错误消息中的查询将完美执行。

而头是:DFBOGARM，KVANTUM1，DSTOMK，DSTAKK

Answer 1

好的，错误是我必须为上面的每一列选择值。

这意味着我做了这样的查询:

@Query(value = "select  "
        + "    DFBOGARM, 1 as DFSALVAR, 1 as DSTMND, 1 as DSTMNDAKK, 1 as KVANTUMAKK, "
        + "    sum(KVANTUM1) as KVANTUM1, "
        + "    (sum(DSTOMK) * 1000 / sum(KVANTUM1)) as DSTOMK, "
        + " (sum(DSTAKK) * 1000 / sum(KVANTUMAKK)) as DSTAKK "
        + "from NHODATA.ERHDSTV1 "
        + "where DFSALVAR in(52, 55) "
        + "group by DFBOGARM "
        + "order by DFBOGARM", nativeQuery = true)

这很有效。