using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using SqlSugar; namespace OrmTest { public partial class NewUnitTest { public static void CodeFirst() { if (Db.DbMaintenance.IsAnyTable("UnitCodeTest1", false)) Db.DbMaintenance.DropTable("UnitCodeTest1"); Db.CodeFirst.InitTables(); Db.CodeFirst.InitTables(); Db.DbMaintenance.TruncateTable(); Db.Insertable(new Test00111()).ExecuteCommand(); var list = Db.Queryable().ToList(); } public class Test00111 { public int id { get; set; } [SugarColumn(ColumnDataType = "guid",IsNullable =true)] public Guid? creater { get; set; } } public class UnitCodeTest1 { public int Id { get; set; } public DateTime? CreateDate { get; set; } } } }