为什么生成的查询具有无效的列名？

Question

我有以下型号：

public partial class Vehicule
{
    public long VehiculeId { get; set; }
    public int CompanyId { get; set; }
    public string PhoneNumber { get; set; }
    public long? HardwareId { get; set; }
    public int? VehiculeUserId { get; set; }
    public int GpsBoxType { get; set; }
    public string Category { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }
    public int IconId { get; set; }
    public int GpsBoxTrackingDelay { get; set; }
    public string Address { get; set; }
    public int? AddressProtocol { get; set; }
    public string BoardId { get; set; }
    public ulong RowVersion { get; set; }
    public bool RowEnabled { get; set; }
    public DateTime? DbInsertTime { get; set; }
    public string CustomId { get; set; }
    public bool? HasGeoWorker { get; set; }

    public virtual Company Company { get; set; }

    public virtual Device Device { get; set; }

    public virtual ICollection<FleetDetail> FleetDetails { get; set; }

    public Vehicule()
    {
        FleetDetails = new HashSet<FleetDetail>();
    }
}

和

public partial class Device
{
    public long Imei { get; set; }
    public string Brand { get; set; }
    public string Model { get; set; }
    public string Name { get; set; }
    public string OsVersion { get; set; }
    public string AppVersion { get; set; }
    public ulong RowVersion { get; set; }

    public virtual DeviceRegistrationFree DeviceRegistrationFree { get; set; }
    public virtual DeviceRegistrationPackage DeviceRegistrationPackage { get; set; }
    public virtual DeviceRegistrationStore DeviceRegistrationStore { get; set; }
    public virtual Registration Registration { get; set; }
    public virtual Vehicule Vehicule { get; set; }
}

配置如下：

        builder.Entity<Vehicule>(entity =>
        {
            entity.ToTable("Vehicule");

            entity.HasIndex(e => e.HardwareId)
                .HasName("UIX_HardwareID")
                .IsUnique();

            entity.HasIndex(e => e.RowVersion)
                .HasName("IX_RowVersion");

            entity.HasIndex(e => e.VehiculeUserId)
                .HasName("UIX_VehiculeUserID")
                .IsUnique();

            entity.HasIndex(e => new { e.BoardId, e.CompanyId })
                .HasName("UIX_CompanyIdVehiculeBoardId")
                .IsUnique();

            entity.HasIndex(e => new { e.GpsBoxType, e.RowEnabled })
                .HasName("IX_RowEnabled");

            entity.HasIndex(e => new { e.VehiculeId, e.Name, e.CompanyId, e.RowEnabled })
                .HasName("IX_CompanyID_RowEnabled");

            entity.Property(e => e.VehiculeId).HasColumnName("VehiculeID");

            entity.Property(e => e.Address).HasMaxLength(250);

            entity.Property(e => e.BoardId)
                .HasColumnName("BoardID")
                .HasMaxLength(50)
                .IsUnicode(false);

            entity.Property(e => e.Category).HasMaxLength(128);

            entity.Property(e => e.CompanyId).HasColumnName("CompanyID");

            entity.Property(e => e.CustomId).HasMaxLength(128);

            entity.Property(e => e.DbInsertTime).HasColumnType("datetime");

            entity.Property(e => e.Description).HasMaxLength(1024);

            entity.Property(e => e.HardwareId).HasColumnName("HardwareID");

            entity.Property(e => e.IconId).HasColumnName("IconID");

            entity.Property(e => e.Name).HasMaxLength(128);

            entity.Property(e => e.PhoneNumber)
                .HasMaxLength(30)
                .IsUnicode(false);

            // https://github.com/aspnet/EntityFrameworkCore/issues/5936#issuecomment-397987482
            entity.Property(e => e.RowVersion)
                .HasConversion(new NumberToBytesConverter<ulong>())
                .IsRowVersion();

            entity.Property(e => e.VehiculeUserId).HasColumnName("VehiculeUserID");

            entity.HasOne(d => d.Company)
                .WithMany(p => p.Vehicule)
                .HasForeignKey(d => d.CompanyId)
                .OnDelete(DeleteBehavior.ClientSetNull)
                .HasConstraintName("FK_GpsBox_Company");

            // Model the relationship between Vehicule and Device
            // We don't need a Foreign key in the database though
            entity.HasOne(d => d.Device)
                .WithOne(v => v.Vehicule)
                .HasForeignKey<Device>(d => d.Imei)

                // The key column for the JOIN is not the primary key but a custom column
                // HardwareId in Vehicule => Imei in Device
                .HasPrincipalKey<Vehicule>(v => v.HardwareId);

            entity.HasMany(d => d.FleetDetails)
                .WithOne(f => f.Vehicule)
                .HasForeignKey(d => d.VehiculeId);
        });

和

        builder.Entity<Device>(entity =>
        {
            entity.HasKey(e => e.Imei);

            entity.ToTable("Device", SqlSchema.SafeProtect);

            entity.Property(e => e.Imei).ValueGeneratedNever();

            entity.Property(e => e.AppVersion)
                .HasMaxLength(30)
                .IsUnicode(false);

            entity.Property(e => e.Brand).HasMaxLength(255);

            entity.Property(e => e.Model).HasMaxLength(255);

            entity.Property(e => e.Name).HasMaxLength(255);

            entity.Property(e => e.OsVersion)
                .HasMaxLength(30)
                .IsUnicode(false);

            entity.Property(e => e.RowVersion)
                .HasConversion(new NumberToBytesConverter<ulong>())
                .IsRowVersion();

            entity.HasOne(v => v.Vehicule)
                .WithOne(d => d.Device)
                .HasForeignKey<Vehicule>(v => v.HardwareId);
        });

两个实体之间存在一对一的关系。

以下linq查询：

IQueryable<Vehicule> query =
                    (from Vehicule entity in delayedDisposer.Item.VehicleDbSet
                     where entity.HardwareId == hardwareID
                     select entity).Include(v => v.Device).Include(v => v.FleetDetails).AsNoTracking();

var vehicule =  query.First();

在无效查询中生成，失败并出现以下错误：

  

System.Data.SqlClient.SqlException：'无效的列名'Protocol1'。

这是由实体框架生成的sql：

exec sp_executesql N'SELECT TOP(1) [entity].[VehiculeID], [entity].[Address], [entity].[AddressProtocol], [entity].[BoardID], [entity].[Category], [entity].[CompanyID], [entity].[CustomId], [entity].[DbInsertTime], [entity].[Description], [entity].[GpsBoxTrackingDelay], [entity].[GpsBoxType], [entity].[HardwareID], [entity].[HasGeoWorker], [entity].[IconID], [entity].[Name], [entity].[PhoneNumber], [entity].[Protocol1], [entity].[RowEnabled], [entity].[RowVersion], [entity].[VehiculeUserID], [entity.Device].[Imei], [entity.Device].[AppVersion], [entity.Device].[Brand], [entity.Device].[Model], [entity.Device].[Name], [entity.Device].[OsVersion], [entity.Device].[RowVersion]
FROM [Vehicule] AS [entity]
LEFT JOIN [SafeProtect].[Device] AS [entity.Device] ON [entity].[HardwareID] = [entity.Device].[Imei]
WHERE [entity].[HardwareID] = @__hardwareID_0
ORDER BY [entity].[VehiculeID]',N'@__hardwareID_0 bigint',@__hardwareID_0=866857042994208

我完全不知道为什么使用此列名。我只能说的是，AddressProtocol列是Protocol实体的一对一外键，而后者又包含一个 Protocol1 属性：

public partial class Protocol
{
    public Protocol()
    {
        Message = new HashSet<Message>();
        Vehicule = new HashSet<Vehicule>();
        VehiculeUser = new HashSet<VehiculeUser>();
    }

    public int Protocol1 { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }

    public virtual ICollection<Message> Message { get; set; }
    public virtual ICollection<Vehicule> Vehicule { get; set; }
    public virtual ICollection<VehiculeUser> VehiculeUser { get; set; }
}

和

        builder.Entity<Protocol>(entity =>
        {
            entity.HasKey(e => e.Protocol1);

            entity.ToTable("Protocol", "cst");

            entity.Property(e => e.Protocol1)
                .HasColumnName("Protocol")
                .ValueGeneratedNever();
        });

任何帮助表示赞赏。

---

编辑：我通过从“协议”实体中删除“车辆”集合来解决了这个问题。我可能会问另一个问题，以了解为什么Entity Framework在没有/未考虑配置的情况下遍历图形。我会在Github上打开一个有关列名的问题。