diff --git a/api/controllers/console/app/statistic.py b/api/controllers/console/app/statistic.py
index a0c9553977bbde..1a9c50db732519 100644
--- a/api/controllers/console/app/statistic.py
+++ b/api/controllers/console/app/statistic.py
@@ -62,16 +62,15 @@ def get(self, app_id):
 
         sql_query += ' GROUP BY date order by date'
 
-        with db.engine.begin() as conn:
-            rs = conn.execute(db.text(sql_query), arg_dict)
-
         response_data = []
 
-        for i in rs:
-            response_data.append({
-                'date': str(i.date),
-                'conversation_count': i.conversation_count
-            })
+        with db.engine.begin() as conn:
+            rs = conn.execute(db.text(sql_query), arg_dict)
+            for i in rs:
+                response_data.append({
+                    'date': str(i.date),
+                    'conversation_count': i.conversation_count
+                })
 
         return jsonify({
             'data': response_data
@@ -124,16 +123,15 @@ def get(self, app_id):
 
         sql_query += ' GROUP BY date order by date'
 
-        with db.engine.begin() as conn:
-            rs = conn.execute(db.text(sql_query), arg_dict)
-
         response_data = []
 
-        for i in rs:
-            response_data.append({
-                'date': str(i.date),
-                'terminal_count': i.terminal_count
-            })
+        with db.engine.begin() as conn:
+            rs = conn.execute(db.text(sql_query), arg_dict)            
+            for i in rs:
+                response_data.append({
+                    'date': str(i.date),
+                    'terminal_count': i.terminal_count
+                })
 
         return jsonify({
             'data': response_data
@@ -187,18 +185,17 @@ def get(self, app_id):
 
         sql_query += ' GROUP BY date order by date'
 
-        with db.engine.begin() as conn:
-            rs = conn.execute(db.text(sql_query), arg_dict)
-
         response_data = []
 
-        for i in rs:
-            response_data.append({
-                'date': str(i.date),
-                'token_count': i.token_count,
-                'total_price': i.total_price,
-                'currency': 'USD'
-            })
+        with db.engine.begin() as conn:
+            rs = conn.execute(db.text(sql_query), arg_dict)
+            for i in rs:
+                response_data.append({
+                    'date': str(i.date),
+                    'token_count': i.token_count,
+                    'total_price': i.total_price,
+                    'currency': 'USD'
+                })
 
         return jsonify({
             'data': response_data
@@ -256,16 +253,15 @@ def get(self, app_id):
 GROUP BY date
 ORDER BY date"""
 
+        response_data = []
+        
         with db.engine.begin() as conn:
             rs = conn.execute(db.text(sql_query), arg_dict)
-
-        response_data = []
-
-        for i in rs:
-            response_data.append({
-                'date': str(i.date),
-                'interactions': float(i.interactions.quantize(Decimal('0.01')))
-            })
+            for i in rs:
+                response_data.append({
+                    'date': str(i.date),
+                    'interactions': float(i.interactions.quantize(Decimal('0.01')))
+                })
 
         return jsonify({
             'data': response_data
@@ -320,20 +316,19 @@ def get(self, app_id):
 
         sql_query += ' GROUP BY date order by date'
 
-        with db.engine.begin() as conn:
-            rs = conn.execute(db.text(sql_query), arg_dict)
-
         response_data = []
 
-        for i in rs:
-            response_data.append({
-                'date': str(i.date),
-                'rate': round((i.feedback_count * 1000 / i.message_count) if i.message_count > 0 else 0, 2),
-            })
+        with db.engine.begin() as conn:
+            rs = conn.execute(db.text(sql_query), arg_dict)
+            for i in rs:
+                response_data.append({
+                    'date': str(i.date),
+                    'rate': round((i.feedback_count * 1000 / i.message_count) if i.message_count > 0 else 0, 2),
+                })
 
         return jsonify({
-                'data': response_data
-            })
+            'data': response_data
+        })
 
 
 class AverageResponseTimeStatistic(Resource):
@@ -383,16 +378,15 @@ def get(self, app_id):
 
         sql_query += ' GROUP BY date order by date'
 
-        with db.engine.begin() as conn:
-            rs = conn.execute(db.text(sql_query), arg_dict)
-
         response_data = []
 
-        for i in rs:
-            response_data.append({
-                'date': str(i.date),
-                'latency': round(i.latency * 1000, 4)
-            })
+        with db.engine.begin() as conn:
+            rs = conn.execute(db.text(sql_query), arg_dict)            
+            for i in rs:
+                response_data.append({
+                    'date': str(i.date),
+                    'latency': round(i.latency * 1000, 4)
+                })
 
         return jsonify({
             'data': response_data
@@ -447,16 +441,15 @@ def get(self, app_id):
 
         sql_query += ' GROUP BY date order by date'
 
-        with db.engine.begin() as conn:
-            rs = conn.execute(db.text(sql_query), arg_dict)
-
         response_data = []
 
-        for i in rs:
-            response_data.append({
-                'date': str(i.date),
-                'tps': round(i.tokens_per_second, 4)
-            })
+        with db.engine.begin() as conn:
+            rs = conn.execute(db.text(sql_query), arg_dict)
+            for i in rs:
+                response_data.append({
+                    'date': str(i.date),
+                    'tps': round(i.tokens_per_second, 4)
+                })
 
         return jsonify({
             'data': response_data