Some columns with int datatype are incorrectly created as counter column

Hello,

currently I try to recreate an Access MDB database based on the scaffolded project. When I run my initial migration some columns which are mapped to an integer property but without explicitly assigned datatype are created incorrectly as counter columns. Some other columns with similar definition/configuration are created properly as int.

Currently I believe the incorrect behavior comes up when the column is referencing some other column as foreign key. In the example below, none of the columns should get the counter datatype.

I’m using EFCore 3.1.21 on net472 together with EntityFrameworkCore.Jet.OleDb 3.1.0

public partial class AmElCommodityMaterials
{
    public int? Ix4CommodityId { get; set; }
    public int? Ix4MaterialId { get; set; }
    public short? Ix2MaterialVc { get; set; }
    public int? Ix4MaterialFunctionId { get; set; }

    public virtual AmElCommodityCatalog Ix4Commodity { get; set; }
    public virtual AmElMaterialData Ix4Material { get; set; }
    public virtual AmElMaterialFunction Ix4MaterialFunction { get; set; }
}

// From ModelBuilder
modelBuilder.Entity<AmElCommodityMaterials>(entity =>
{
    entity.HasKey(e => new { e.Ix4CommodityId, e.Ix4MaterialFunctionId })
        .HasName("pk_ETCommodityMaterials");

    entity.ToTable("AM_EL_CommodityMaterials");

    entity.HasIndex(e => e.Ix4CommodityId)
        .HasName("fk_AM_EL_CommodityMaterials_AM_EL_CommodityCatalog");

    entity.HasIndex(e => e.Ix4MaterialFunctionId)
        .HasName("fk_AM_EL_CommodityMaterials_AM_EL_MaterialFunction");

    entity.HasIndex(e => e.Ix4MaterialId)
        .HasName("fk_AM_EL_CommodityMaterials_AM_EL_MaterialData");

    entity.Property(e => e.Ix4CommodityId).HasColumnName("Ix4_CommodityID");

    entity.Property(e => e.Ix4MaterialFunctionId).HasColumnName("Ix4_MaterialFunctionID");

    entity.Property(e => e.Ix2MaterialVc).HasColumnName("Ix2_Material_VC");

    entity.Property(e => e.Ix4MaterialId).HasColumnName("Ix4_MaterialID");

    entity.HasOne(d => d.Ix4Commodity)
        .WithMany(p => p.AmElCommodityMaterials)
        .HasForeignKey(d => d.Ix4CommodityId)
        .OnDelete(DeleteBehavior.ClientSetNull)
        .HasConstraintName("fk_AM_EL_CommodityMaterials_AM_EL_CommodityCatalog");

    entity.HasOne(d => d.Ix4MaterialFunction)
        .WithMany(p => p.AmElCommodityMaterials)
        .HasForeignKey(d => d.Ix4MaterialFunctionId)
        .OnDelete(DeleteBehavior.ClientSetNull)
        .HasConstraintName("fk_AM_EL_CommodityMaterials_AM_EL_MaterialFunction");

    entity.HasOne(d => d.Ix4Material)
        .WithMany(p => p.AmElCommodityMaterials)
        .HasForeignKey(d => d.Ix4MaterialId)
        .HasConstraintName("fk_AM_EL_CommodityMaterials_AM_EL_MaterialData");
});

// From Migration
migrationBuilder.CreateTable(
    name: "AM_EL_CommodityMaterials",
    columns: table => new
    {
        Ix4_CommodityID = table.Column<int>(nullable: false),
        Ix4_MaterialFunctionID = table.Column<int>(nullable: false),
        Ix4_MaterialID = table.Column<int>(nullable: true),
        Ix2_Material_VC = table.Column<short>(nullable: true)
    },
    constraints: table =>
    {
        table.PrimaryKey("pk_ETCommodityMaterials", x => new { x.Ix4_CommodityID, x.Ix4_MaterialFunctionID });
        table.ForeignKey(
            name: "fk_AM_EL_CommodityMaterials_AM_EL_CommodityCatalog",
            column: x => x.Ix4_CommodityID,
            principalTable: "AM_EL_CommodityCatalog",
            principalColumn: "Ix4_CommodityID",
            onDelete: ReferentialAction.Restrict);
        table.ForeignKey(
            name: "fk_AM_EL_CommodityMaterials_AM_EL_MaterialFunction",
            column: x => x.Ix4_MaterialFunctionID,
            principalTable: "AM_EL_MaterialFunction",
            principalColumn: "Ix4_MaterialFunctionID",
            onDelete: ReferentialAction.Restrict);
        table.ForeignKey(
            name: "fk_AM_EL_CommodityMaterials_AM_EL_MaterialData",
            column: x => x.Ix4_MaterialID,
            principalTable: "AM_EL_MaterialData",
            principalColumn: "Ix4_MaterialID",
            onDelete: ReferentialAction.Restrict);
    });

CREATE TABLE `AM_EL_CommodityMaterials` (
    `Ix4_CommodityID` counter NOT NULL,
    `Ix4_MaterialFunctionID` counter NOT NULL,
    `Ix4_MaterialID` counter NULL,
    `Ix2_Material_VC` smallint NULL,
    CONSTRAINT `pk_ETCommodityMaterials` PRIMARY KEY (`Ix4_CommodityID`, `Ix4_MaterialFunctionID`),
    CONSTRAINT `fk_AM_EL_CommodityMaterials_AM_EL_CommodityCatalog` FOREIGN KEY (`Ix4_CommodityID`) REFERENCES `AM_EL_CommodityCatalog` (`Ix4_CommodityID`) ON DELETE NO ACTION,
    CONSTRAINT `fk_AM_EL_CommodityMaterials_AM_EL_MaterialFunction` FOREIGN KEY (`Ix4_MaterialFunctionID`) REFERENCES `AM_EL_MaterialFunction` (`Ix4_MaterialFunctionID`) ON DELETE NO ACTION,
    CONSTRAINT `fk_AM_EL_CommodityMaterials_AM_EL_MaterialData` FOREIGN KEY (`Ix4_MaterialID`) REFERENCES `AM_EL_MaterialData` (`Ix4_MaterialID`) ON DELETE NO ACTION
);

As reference, the generated Sql for SqlServer and SqLite

CREATE TABLE [AM_EL_CommodityMaterials] (
        [Ix4_CommodityID] int NOT NULL,
        [Ix4_MaterialFunctionID] int NOT NULL,
        [Ix4_MaterialID] int NULL,
        [Ix2_Material_VC] smallint NULL,
        CONSTRAINT [AM_EL_CommodityMaterials$pk_ETCommodityMaterials] PRIMARY KEY ([Ix4_CommodityID], [Ix4_MaterialFunctionID]),
        CONSTRAINT [AM_EL_CommodityMaterials$fk_AM_EL_CommodityMaterials_AM_EL_CommodityCatalog] FOREIGN KEY ([Ix4_CommodityID]) REFERENCES [AM_EL_CommodityCatalog] ([Ix4_CommodityID]) ON DELETE CASCADE,
        CONSTRAINT [AM_EL_CommodityMaterials$fk_AM_EL_CommodityMaterials_AM_EL_MaterialFunction] FOREIGN KEY ([Ix4_MaterialFunctionID]) REFERENCES [AM_EL_MaterialFunction] ([Ix4_MaterialFunctionID]) ON DELETE CASCADE,
        CONSTRAINT [AM_EL_CommodityMaterials$fk_AM_EL_CommodityMaterials_AM_EL_MaterialData] FOREIGN KEY ([Ix4_MaterialID]) REFERENCES [AM_EL_MaterialData] ([Ix4_MaterialID]) ON DELETE CASCADE
    );

CREATE TABLE "AM_EL_CommodityMaterials" (
    "Ix4_CommodityID" INTEGER NOT NULL,
    "Ix4_MaterialFunctionID" INTEGER NOT NULL,
    "Ix4_MaterialID" INTEGER NULL,
    "Ix2_Material_VC" INTEGER NULL,
    CONSTRAINT "AM_EL_CommodityMaterials$pk_ETCommodityMaterials" PRIMARY KEY ("Ix4_CommodityID", "Ix4_MaterialFunctionID"),
    CONSTRAINT "AM_EL_CommodityMaterials$fk_AM_EL_CommodityMaterials_AM_EL_CommodityCatalog" FOREIGN KEY ("Ix4_CommodityID") REFERENCES "AM_EL_CommodityCatalog" ("Ix4_CommodityID") ON DELETE CASCADE,
    CONSTRAINT "AM_EL_CommodityMaterials$fk_AM_EL_CommodityMaterials_AM_EL_MaterialFunction" FOREIGN KEY ("Ix4_MaterialFunctionID") REFERENCES "AM_EL_MaterialFunction" ("Ix4_MaterialFunctionID") ON DELETE CASCADE,
    CONSTRAINT "AM_EL_CommodityMaterials$fk_AM_EL_CommodityMaterials_AM_EL_MaterialData" FOREIGN KEY ("Ix4_MaterialID") REFERENCES "AM_EL_MaterialData" ("Ix4_MaterialID") ON DELETE CASCADE
);

[MichaelSteinecke]

As far as I can test it so far, the bug seems to be fixed.

[MichaelSteinecke]

I’ll build a repo