Update demo

Src/Asp.NetCore2/SqliteTest/UserTestCases/UJson.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{
+    public partial class NewUnitTest
+    {
+
+        public static void Json()
+        {
+            Db.CodeFirst.InitTables<UnitJsonTest>();
+            Db.DbMaintenance.TruncateTable<UnitJsonTest>();
+            var id= Db.Insertable(new UnitJsonTest() { Order = new Order { Id = 1, Name = "order1" } }).ExecuteReturnIdentity();
+            var list = Db.Queryable<UnitJsonTest>().ToList();
+            UValidate.Check("order1", list.First().Order.Name, "Json");
+            Db.Updateable(new UnitJsonTest() { Id = id, Order = new Order { Id = 2, Name = "order2" } }).ExecuteCommand();
+            list= Db.Queryable<UnitJsonTest>().ToList();
+            UValidate.Check("order2", list.First().Order.Name, "Json");
+            var list2 = Db.Queryable<UnitJsonTest>().ToList();
+        }
+    }
+
+
+    public class UnitJsonTest
+    {
+        [SqlSugar.SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+        public int Id { get; set; }
+        [SqlSugar.SugarColumn(ColumnDataType = "varchar(4000)", IsJson = true)]
+        public Order Order { get; set; }
+    }
+}