diff --git a/FunGame.Server/Services/DataUtility/MySQLHelper.cs b/FunGame.Server/Services/DataUtility/MySQLHelper.cs
index 0a9e4f0..61f7634 100644
--- a/FunGame.Server/Services/DataUtility/MySQLHelper.cs
+++ b/FunGame.Server/Services/DataUtility/MySQLHelper.cs
@@ -287,7 +287,6 @@ namespace Milimoe.FunGame.Server.Services.DataUtility
                 {
                     SelectCommand = command
                 };
-                _dataSet = new();
                 _affectedRows = adapter.Fill(_dataSet);
 
                 if (localTransaction) Commit();
@@ -352,7 +351,6 @@ namespace Milimoe.FunGame.Server.Services.DataUtility
                 {
                     SelectCommand = command
                 };
-                _dataSet = new();
                 _affectedRows = await adapter.FillAsync(_dataSet);
 
                 if (localTransaction) Commit();
@@ -482,7 +480,7 @@ namespace Milimoe.FunGame.Server.Services.DataUtility
             _result = SQLResult.NotFound;
             _affectedRows = 0;
             _lastInsertId = 0;
-            DataSet.Clear();
+            _dataSet = new();
         }
     }
 }
diff --git a/FunGame.Server/Services/DataUtility/SQLiteHelper.cs b/FunGame.Server/Services/DataUtility/SQLiteHelper.cs
index 55b9da8..226fd27 100644
--- a/FunGame.Server/Services/DataUtility/SQLiteHelper.cs
+++ b/FunGame.Server/Services/DataUtility/SQLiteHelper.cs
@@ -285,7 +285,6 @@ namespace Milimoe.FunGame.Server.Services.DataUtility
 
                 ReSet();
                 using SqliteDataReader reader = command.ExecuteReader();
-                _dataSet = new();
                 do
                 {
                     DataTable table = new();
@@ -351,7 +350,6 @@ namespace Milimoe.FunGame.Server.Services.DataUtility
 
                 ReSet();
                 using SqliteDataReader reader = await command.ExecuteReaderAsync();
-                _dataSet = new();
                 do
                 {
                     DataTable table = new();
@@ -486,7 +484,7 @@ namespace Milimoe.FunGame.Server.Services.DataUtility
             _result = SQLResult.NotFound;
             _affectedRows = 0;
             _lastInsertId = 0;
-            DataSet.Clear();
+            _dataSet = new();
         }
     }
 }