Update demo

Src/Asp.Net/SqlServerTest/Demo/Demo0_SqlSugarClient.cs

@@ -46,10 +46,10 @@ namespace OrmTest
             //Use db
             var dt = db.Ado.GetDataTable("select 1");
 
-            //create table OrderDetail
-            db.CodeFirst.InitTables(typeof(OrderItem));
-
-            db.Insertable(new OrderItem() { OrderId = 1, Price = 0 }).ExecuteCommand();
+            //create tables
+            db.CodeFirst.InitTables(typeof(OrderItem),typeof(Order));
+            var id = db.Insertable(new Order() { Name = "order1", CustomId = 1, Price = 0, CreateTime = DateTime.Now }).ExecuteReturnIdentity();
+            db.Insertable(new OrderItem() { OrderId = id, Price = 0 }).ExecuteCommand();
             Console.WriteLine("#### SqlSugarClient End ####");
 
         }

Src/Asp.Net/SqlServerTest/Demo/Demo1_Queryable.cs

@@ -148,8 +148,8 @@ namespace OrmTest
                                      //Child=(select * from parent where ParentId=it.id)
                                      .Mapper(it => it.Child, it => it.Id, it => it.Parent.ParentId)
                                      .ToList();
-
-
+            //one to one
+            var list2 = db.Queryable<OrderItemInfo>().Mapper(it => it.Order, it => it.OrderId).ToList();
             Console.WriteLine("#### End Start ####");
         }
 

Src/Asp.Net/SqlServerTest/Models/Mapper.cs

@@ -5,16 +5,17 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace OrmTest.Models
+namespace OrmTest
 {
     [SugarTable("OrderDetail")]
     public class OrderItemInfo
     {
-        [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+        [SqlSugar.SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
         public int ItemId { get; set; }
-        public string ItemCode { get; set; }
-        public decimal Pirce { get; set; }
         public int OrderId { get; set; }
+        public decimal? Price { get; set; }
+        [SqlSugar.SugarColumn(IsNullable = true)]
+        public DateTime? CreateTime { get; set; }
         [SugarColumn(IsIgnore = true)]
         public Order Order { get; set; }
     }