Question

我正在测试带有MSSQL-Server和Firebird 3.0的EF Core的迁移。

我用几个字段创建一个新表。关键字段具有属性{ "notification": { /* Local path or remote url to an image to use as the icon for push notifications. 96x96 png grayscale with transparency. */ "icon": STRING, /* Tint color for the push notification image when it appears in the notification tray. 6 character long hex color string eg: "#000000" */ "color": STRING, /* Show each push notification individually "default" or collapse into one "collapse". Valid values: "default", "collapse" */ "androidMode": STRING, /* If "androidMode" is set to "collapse", this title is used for the collapsed notification message. eg: "#{unread_notifications} new interactions" */ "androidCollapsedTitle": STRING } }，但是Firebird数据库中的关键字段在迁移过程中不会自动增加。它可以正确地与MS-SQL-Server一起使用。

我使用框架FirebirdSql.EntityFrameworkCore.Firebird 6.6.0。

.ValueGeneratedOnAdd()

Answer 1

我在http://tracker.firebirdsql.org/browse/DNET-884上找到了解决方案。我必须在DBContext类的OnModelCreating中添加.ForFirebirdUseIdentityColumns()。现在，我得到了两种数据库类型的自动增量。

现在看起来像这样：

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.HasAnnotation("ProductVersion", "2.2.4-servicing-10062")
            .ForFirebirdUseIdentityColumns()
            .ForSqlServerUseIdentityColumns();

        modelBuilder.Entity<TblTest>(entity =>
        {
            entity.HasKey(e => e.Id)
                .HasName("PK__tblTest");

            entity.Property(e => e.Name).IsUnicode(false);
        });
    }

添加迁移后，我必须在createTable-parameter中的注释中找到我正在使用的第二种数据库类型。就我而言，我使用Firebird添加了迁移，并为SqlServer添加了注释：

        migrationBuilder.CreateTable(
            name: "tblTest",
            columns: table => new
            {
                ID = table.Column<long>(nullable: false)
                    .Annotation("Fb:ValueGenerationStrategy", FbValueGenerationStrategy.IdentityColumn)       
                    .Annotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn),
                Number = table.Column<int>(nullable: true),
                Name = table.Column<string>(unicode: false, maxLength: 50, nullable: true),
                Date = table.Column<DateTime>(nullable: true)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK__tblTest", x => x.ID);
            });

EF Core-Firebird迁移自动递增问题

1 个答案: