diff --git a/Src/Asp.NetCore2/DuckDBTest/8_Insert.cs b/Src/Asp.NetCore2/DuckDBTest/8_Insert.cs
index 591a435f9..1bf7112df 100644
--- a/Src/Asp.NetCore2/DuckDBTest/8_Insert.cs
+++ b/Src/Asp.NetCore2/DuckDBTest/8_Insert.cs
@@ -41,8 +41,7 @@ namespace OrmTest
             var listLong = new List<StudentWithSnowflake>() {
             new StudentWithSnowflake() { Name = "name",Id=SnowFlakeSingle.Instance.NextId() },
             new StudentWithSnowflake() { Name = "name",Id=SnowFlakeSingle.Instance.NextId()}
-            };
-            db.Fastest<StudentWithSnowflake>().BulkCopy(listLong);
+            }; 
         }
 
         // 实体类：带自增主键（Entity class: With auto-increment primary key）
diff --git a/Src/Asp.NetCore2/DuckDBTest/9_Update.cs b/Src/Asp.NetCore2/DuckDBTest/9_Update.cs
index dc4d0349e..55d82da75 100644
--- a/Src/Asp.NetCore2/DuckDBTest/9_Update.cs
+++ b/Src/Asp.NetCore2/DuckDBTest/9_Update.cs
@@ -54,10 +54,7 @@ namespace OrmTest
             var result7 = db.Updateable(updateObj)
                           .IgnoreColumns(ignoreAllNullColumns: true, ignoreAllDefaultValue:true)
                           .ExecuteCommand();
-
-            // 使用最快的方式批量更新实体对象列表（Bulk update a list of entity objects using the fastest method）
-            var result8 = db.Fastest<StudentWithSnowflake>().BulkUpdate(updateObjs);
-
+             
             /***************************表达式更新 (Expression Update)***************************/
 
             // 使用表达式更新实体对象的指定列（Update specific columns of the entity object using expressions）
diff --git a/Src/Asp.NetCore2/DuckDBTest/Program.cs b/Src/Asp.NetCore2/DuckDBTest/Program.cs
index 2c2b35e9d..14aff9b18 100644
--- a/Src/Asp.NetCore2/DuckDBTest/Program.cs
+++ b/Src/Asp.NetCore2/DuckDBTest/Program.cs
@@ -4,7 +4,19 @@ _1_CodeFirst.Init();
 _2_DbFirst.Init();
 _3_EasyQuery.Init();
 _4_JoinQuery.Init();
+_4_Subquery.Init();
 _5_PageQuery.Init();
+_6_NavQuery.Init();
+_7_GroupQuery.Init();
+_8_Insert.Init();
+_9_Update.Init();
+_a1_Delete.Init();
+_a2_Sql.Init();
+_a3_Merge.Init();
+//_a4_SplitTable.Init();
+_a5_GridSave.Init();
+_a6_SqlPage.Init();
 _a7_JsonType.Init();
+_a8_SelectReturnType.Init();
 Console.WriteLine("DEMO执行完成");
 Console.Read();
diff --git a/Src/Asp.NetCore2/DuckDBTest/a3_Merge.cs b/Src/Asp.NetCore2/DuckDBTest/a3_Merge.cs
index 561dd248c..5586187ff 100644
--- a/Src/Asp.NetCore2/DuckDBTest/a3_Merge.cs
+++ b/Src/Asp.NetCore2/DuckDBTest/a3_Merge.cs
@@ -28,15 +28,7 @@ namespace OrmTest
 
             // 中文备注：带异常处理的分页插入或更新操作，每页1000条记录
             // English Comment: Perform insert or update operation with exception handling and paging, 1000 records per page
-            db.Storageable(list).PageSize(1000, exrows => { }).ExecuteCommand();
-
-            // 中文备注：使用Fastest方式批量合并数据（用于大数据处理）
-            // English Comment: Merge data using Fastest method (for big data processing)
-            db.Fastest<Order>().BulkMerge(list);
-
-            // 中文备注：分页使用Fastest方式批量合并数据，每页100000条记录（用于大数据处理）
-            // English Comment: Merge data using Fastest method with paging, 100000 records per page (for big data processing)
-            db.Fastest<Order>().PageSize(100000).BulkMerge(list);
+            db.Storageable(list).PageSize(1000, exrows => { }).ExecuteCommand(); 
         }
 
         [SqlSugar.SugarTable("Order_a3")]
diff --git a/Src/Asp.NetCore2/DuckDBTest/a8_SelectReturnType.cs b/Src/Asp.NetCore2/DuckDBTest/a8_SelectReturnType.cs
index 4e7e67af1..c4b931cc3 100644
--- a/Src/Asp.NetCore2/DuckDBTest/a8_SelectReturnType.cs
+++ b/Src/Asp.NetCore2/DuckDBTest/a8_SelectReturnType.cs
@@ -40,7 +40,7 @@ namespace OrmTest
             var listDtoAutoMap = db.Queryable<Student>()
                 .Select(it => new StudentDto
                 {
-                    AppendColumn = 100 // 手动指定一列在自动映射 (Manually specify a column in automatic mapping)
+                    AppendColumn =Convert.ToInt32( 100) // 手动指定一列在自动映射 (Manually specify a column in automatic mapping)
                 },
                 true) // true 表示开启自动映射 (true indicates enabling automatic mapping)
                 .ToList();