Update json 2 sql demo

Src/Asp.NetCore2/Json2Sql/Table.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using SqlSugar;
+namespace Test
+{
+    public static class TestHelper 
+    {
+
+        public static void InitDatabase(JsonClient jsonToSqlClient)
+        {
+            jsonToSqlClient.Context.DbMaintenance.CreateDatabase();//创建测试库 Create test database
+            jsonToSqlClient.Context.CodeFirst.InitTables<Order, OrderItem>();//创建测试表 Create test table
+        }
+    }
+    public class Order
+    {
+        [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+        public int Id { get; set; }
+
+        public string Name { get; set; }
+        public decimal Price { get; set; }
+        [SugarColumn(IsNullable = true)]
+        public DateTime CreateTime { get; set; }
+        [SugarColumn(IsNullable = true)]
+        public int CustomId { get; set; }
+        [SugarColumn(IsIgnore = true)]
+        public List<OrderItem> Items { get; set; }
+    }
+    [SqlSugar.SugarTable("OrderDetail")]
+    public class OrderItem
+    {
+        [SqlSugar.SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+        public int ItemId { get; set; }
+        public int OrderId { get; set; }
+        public decimal? Price { get; set; }
+        [SqlSugar.SugarColumn(IsNullable = true)]
+        public DateTime? CreateTime { get; set; }
+    }
+}