diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/UCustom012.cs b/Src/Asp.Net/SqlServerTest/UnitTest/UCustom012.cs
index 846ff3c7f..b175cb121 100644
--- a/Src/Asp.Net/SqlServerTest/UnitTest/UCustom012.cs
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/UCustom012.cs
@@ -105,16 +105,6 @@ namespace OrmTest
            .ToList();
 
 
-            //功能开发中
-            //db.InsertNav(list3)
-            //.ThenInclude(z1 => z1.SchoolA)
-            //.ThenInclude(z1 => z1.RoomList)
-            //.AsNav()
-            //.ThenInclude(z1 => z1.Books);
-
-
-            
-
             var list3_1 = db.Queryable<StudentA>()
            .Includes(x => x.Books.MappingField(z=>z.Names,()=>x.Name).ToList())
            .ToList();
@@ -204,6 +194,23 @@ namespace OrmTest
             db.Deleteable<StudentA>().Where(x => x.SchoolA.School_Name=="a").ExecuteCommand();
             db.Updateable<StudentA>()
                 .SetColumns(it=>it.Name=="a").Where(x => x.SchoolA.School_Name == "a").ExecuteCommand();
+
+
+            var list6=db.Queryable<StudentA>()
+                .Includes(x => x.SchoolA, x => x.RoomList)
+                .Includes(x => x.Books).ToList();
+
+
+            db.DbMaintenance.TruncateTable<StudentA, RoomA, BookA>();
+         
+            //开发中
+            //db.InsertNav(list6)
+            //.ThenInclude(z1 => z1.SchoolA)
+            //.ThenInclude(z1 => z1.RoomList)
+            //.AsNav()
+            //.ThenInclude(z1 => z1.Books);
+
+
         }
 
         public class UnitA001