Question

我正在使用实体代码首次迁移，它一直告诉我

专栏＆＃39; dbo.Users.u_user_id＆＃39;与引用的数据类型不同专栏＆＃39; PTEInteractiveCourses.ModifyUserId＆＃39;在外键＆＃39; FK_dbo.PTEInteractiveCourses_dbo.Users_ModifyUserId＆＃39 ;.不能创建约束。查看以前的错误。

在我创建迁移后尝试更新数据库时。这是PTEInteractivieCourse：

namespace PTEManager.Domain
{
    public class PTEInteractiveCourse
    {
        [Key]
        public Guid PTEInteractiveCourseId { get; set; }

        [ScaffoldColumn(false)]
        [Required]
        public DateTime ModifyDate { get; set; }

        [ScaffoldColumn(false)]
        [ForeignKey("ModifyUser")]
        [Required]
        public double ModifyUserId { get; set; }

        public virtual OpsUser ModifyUser { get; set; }

        [Display(Name = "Package")]
        [ForeignKey("package_nme")]
        [Required]
        public int PackageId { get; set; }

        public virtual Package package_nme { get; set; }

        [ScaffoldColumn(false)]
        [Display(Name = "")]
        [Required]
        public int Status { get; set; }

        [Display(Name = "STCI Course")]
        [ForeignKey("STCICourseName")]
        [Required]
        public Guid STCIProductInteractiveInfoID { get; set; }

        public virtual STCIProductInteractiveInfo STCICourseName { get; set; }
    }
}

这是我的表：

以下是我的用户模型：

namespace PTEManager.Domain
{
    public partial class OpsUser
    {
        public double u_user_id { get; set; }

        public Guid DepartmentID { get; set; }

        public string email_addr { get; set; }

        public string first_nme { get; set; }

        public string last_nme { get; set; }

        public Guid msrepl_tran_version { get; set; }

        public string status { get; set; }

        public string user_nme { get; set; }

        public int u_branch_id { get; set; }

    }
}

和用户地图：

namespace PTEManager.Domain.Mapping
{
    class UserMap : EntityTypeConfiguration<OpsUser>
    {
        public UserMap()
        {
            // Primary Key
            this.HasKey(t => t.u_user_id);

            // Properties
            this.Property(t => t.DepartmentID);

            this.Property(t => t.email_addr)
                .IsRequired()
                .HasMaxLength(50);

            this.Property(t => t.first_nme)
                .IsRequired()
                .HasMaxLength(30);

            this.Property(t => t.last_nme)
                .IsRequired()
                .HasMaxLength(30);

            this.Property(t => t.msrepl_tran_version)
                .IsRequired();

            this.Property(t => t.status)
                .IsRequired()
                .HasMaxLength(1);

            this.Property(t => t.user_nme)
                .IsRequired()
                .HasMaxLength(15);

            this.Property(t => t.u_branch_id)
                .IsRequired();

            // Table & Column Mappings
            this.ToTable("Users");
            this.Property(t => t.u_user_id).HasColumnName("u_user_id");
            this.Property(t => t.DepartmentID).HasColumnName("DepartmentID");
            this.Property(t => t.email_addr).HasColumnName("email_addr");
            this.Property(t => t.first_nme).HasColumnName("first_nme");
            this.Property(t => t.last_nme).HasColumnName("last_nme");
            this.Property(t => t.msrepl_tran_version).HasColumnName("msrepl_tran_version");
            this.Property(t => t.status).HasColumnName("status");
            this.Property(t => t.user_nme).HasColumnName("user_nme");
            this.Property(t => t.u_branch_id).HasColumnName("u_branch_id");
        }
    }
}

Answer 1

在Martin Parkin所说的基础上，您的数据类型在您的实体和数据库之间不匹配。在大多数情况下，我还建议不要将double用作PK或FK。实际上你会希望这是一个整数或长整数。

数字（10,0）=整数

数字（19,0）=长

我的外键数据类型不匹配

1 个答案: