[英]SQL Server the column name is specified more than once in the set clause. Entity framework issue
當我使用EF6進行插入時,出現此錯誤
在SET子句中多次指定了列名“ employee_id”。 一列不能在同一SET子句中分配多個值。 修改SET子句以確保列僅更新一次。 如果SET子句更新視圖的列,則列名“ employee_id”可能在視圖定義中出現兩次
我的模型如下所示:
public class Entity
{
public Entity()
{
IsActive = true;
IsDeleted = false;
DateCreated = DateTime.Now;
}
[Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public long ID { get; set; }
public int CompanyID { get; set; }
public int SubID { get; set; }
public DateTime DateCreated { get; set; }
public bool IsTransient()
{
return EqualityComparer<long>.Default.Equals(ID, default(long));
}
public bool IsDeleted { get; set; }
public bool IsActive { get; set; }
}
public partial class NextOfKin : Entity
{
[Required]
public long employee_id { get; set; }
[StringLength(100)]
[Required]
public string nok_first_name { get; set; }
[StringLength(100)]
[Required]
public string nok_last_name { get; set; }
[StringLength(300)]
[Required]
public string nok_address { get; set; }
[StringLength(100)]
public string nok_email { get; set; }
[StringLength(100)]
public string nok_phone { get; set; }
[StringLength(100)]
public string nok_employer { get; set; }
[StringLength(300)]
public string nok_work_address { get; set; }
[StringLength(100)]
[Required]
public string nok_relationship { get; set; }
public virtual Employee Employee { get; set; }
}
public class Employee : Entity
{
//Person Records
public long UserId { get; set; }
public int TitleId { get; set; }
public int? ReligionId { get; set; }
public string SerialNo { get; set; }
[StringLength(100)]
[Required]
public string FirstName { get; set; }
[StringLength(100)]
[Required]
public string LastName { get; set; }
}
我的插入代碼是這樣的。
NextOfKin nextOfKin = new NextOfKin();
nextOfKin.employee_id = newEmployee.ID;
nextOfKin.nok_first_name = "Friday";
nextOfKin.nok_last_name = "Ben";
nextOfKin.nok_address = "XXX";
nextOfKin.nok_email = "xa@xo.com";
nextOfKin.nok_phone = "023938494";
nextOfKin.nok_employer = "50 Queens Street";
nextOfKin.nok_work_address = "51 Queens Street";
nextOfKin.nok_relationship = "Neighbour";
db.NextOfKins.Add(nextOfKin);
db.SaveChanges();
要解決此問題,請刪除近親模型上的關系,然后進行遷移。 要刪除,請刪除public virtual Employee Employee { get; set; }
public virtual Employee Employee { get; set; }
public virtual Employee Employee { get; set; }
來自NextOfKin模型)。
此問題的原因如下:
只有正確命名引用屬性,才能正確創建關系。 在這種情況下,您應使用EmployeeID而不是employee_id來表示近親和雇員之間的關系。
Employee模型沒有指向親戚模型的鏈接。 如果是一對多,則可以將以下屬性添加到Employee模型。
公共虛擬列表NextOfKins {get; set;} //如果需要延遲加載
要么
公開列表NextOfKins {get; set;} //如果您不需要延遲加載
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.