为什么EF产生无效列时,我有相同的列名作为子表中的外键

本文关键字:EF 无效 为什么 | 更新日期: 2023-09-27 18:09:26

我得到了这2个模型,我使用"include"来获取所有相关实体,我的LINQ是这样的,当我执行它时会抱怨——Invalid column Cust_ProfileTbl_bintAccountNo

LINQ

DB context = new DB();
List<Cust_ProfileTbl> profile = context.profile.ToList();
var r = from ord in context.profile.Include("balance") 
        select ord;

public class Cust_ProfileTbl   
{
    [Key]
    public long bintAccountNo { get; set; } 
    public virtual  BP_BalanceTbl balance { get; set; } 
} 
public class BP_BalanceTbl
{
    [Key] 
    public long bintAccountNo { get; set; } 
}

生成的SQL

SELECT  
    [Project1].[bintAccountNo] AS [bintAccountNo], 
    [Project1].[Cust_ProfileTbl_bintAccountNo] AS [Cust_ProfileTbl_bintAccountNo]-- Invalid column
    FROM ( 
        SELECT 
            [Extent1].[bintAccountNo] AS [bintAccountNo], 
            [Extent2].[Cust_ProfileTbl_bintAccountNo] AS [Cust_ProfileTbl_bintAccountNo], 
        CASE WHEN ([Extent2].[intPartner] IS NULL) THEN CAST(NULL AS int) ELSE 1 END AS [C1]
        FROM  [dbo].[Cust_ProfileTbl] AS [Extent1]
        LEFT OUTER JOIN [dbo].[BP_BalanceTbl] AS [Extent2] ON [Extent1].[bintAccountNo] = [Extent2].[Cust_ProfileTbl_bintAccountNo]
    )  AS [Project1] 
ORDER BY [Project1].[bintAccountNo] ASC, [Project1].[C1] ASC 

我试图摆脱这个bug

  1. 在BP_BalanceTbl中添加1个身份PK列,(我不喜欢这样做)
  2. 更改为使用Join方法。(但我想知道为什么这种情况发生不只是逃避错误,以及如何避免这种情况?)

为什么EF产生无效列时,我有相同的列名作为子表中的外键

应OP的要求,我将发表我的评论作为答案:

所以这个问题是基于一个模型属性被分配主键和外键的事实。要告诉EF创建这个,你需要在属性上使用DataAnnotations:

[Key, ForeignKey("Cust_ProfileTbl")]
public long bintAccountNo { get; set; } 

,你可能还需要引用相关实体作为虚拟属性:

public virtual Cust_ProfileTbl{get; set;}