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java - 用于在春季从多个表中获取数据的自定义查询

问题描述

实体：

@Entity(name = "ap_order_paid")
@Component
public class ApOrderPaid {
        
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
        
    private Long order_number;

    @Transient
    private Long invoiceNumber;
    private Long cheqe_number;

    //getter setter
}
    
public class Orders {
    private long order_number;
    private String invoice_number;
}

我在 mysql 编辑器中运行以下查询，并且正在运行

select
   v.order_number,
   v.id,
   o.invoice_number as invoiceNumber
from ap_order_paid as v, orders o
where v.cheqe_number like '%1234%' and v.order_number = o.order_number

@Query但是当我在带有注释的spring存储库中运行时，该注释不只提供invoice_number的数据

@Query(value="select v.*, o.invoice_number from ap_order_paid as v, orders o where v.cheqe_number like %?1% and v.order_number = o.order_number", nativeQuery = true)
List<ApOrderPaid> getOrderTaskPaidByCheqNo(String cheqe_number);

标签： javahibernatespring-data-jpajpql

解决方案

@ManyToOne像这样映射关联：

@Entity(name = "ap_order_paid")
public class ApOrderPaid {
        
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
        
    @ManyToOne(fetch = LAZY)
    @JoinColumn(name = "order_number")
    private Orders order;

    private Long cheqe_number;

    //getter setter
}
    
@Entity
public class Orders {
    @Id
    private long order_number;
    private String invoice_number;
}

并使用这样的 HQL/JPQL 查询：

@Query("select v from ap_order_paid as v join fetch v.order where v.cheqe_number like %?1%")
List<ApOrderPaid> getOrderTaskPaidByCheqNo(String cheqe_number);

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