diff --git a/tests/pytest/functions/function_all_sample.py b/tests/pytest/functions/function_all_sample.py
index 0dde52f9f6634aa05e14cba8a69b1046d6568cf7..de136976ea9a755edd0ca1e90cab5301fb48d764 100644
--- a/tests/pytest/functions/function_all_sample.py
+++ b/tests/pytest/functions/function_all_sample.py
@@ -388,6 +388,16 @@ class TDTestCase:
         self.checksample(**case25)
         case26 = {"k": 1000}
         self.checksample(**case26)
+        case27 = {
+            "table_expr": "stb1",
+            "condition": "group by tbname slimit 1 "
+        }
+        self.checksample(**case27)         # with slimit
+        case28 = {
+            "table_expr": "stb1",
+            "condition": "group by tbname slimit 1 soffset 1"
+        }
+        self.checksample(**case28)         # with soffset
 
         pass
 
@@ -497,16 +507,7 @@ class TDTestCase:
             "condition": "group by c6"
         }
         # self.checksample(**err46)         # group by normal col
-        err47 = {
-            "table_expr": "stb1",
-            "condition": "group by tbname slimit 1 "
-        }
-        self.checksample(**err47)         # with slimit
-        err48 = {
-            "table_expr": "stb1",
-            "condition": "group by tbname slimit 1 soffset 1"
-        }
-        self.checksample(**err48)         # with soffset
+
         err49 = {"k": "2021-01-01 00:00:00.000"}
         self.checksample(**err49)         # k: timestamp
         err50 = {"k": False}
@@ -653,10 +654,14 @@ class TDTestCase:
         self.sample_error_query()
 
     def run(self):
-        # run in  develop branch
-        self.sample_test_run()
-        pass
-
+        import traceback
+        try:
+            # run in  develop branch
+            self.sample_test_run()
+            pass
+        except Exception as e:
+            traceback.print_exc()
+            raise e
 
     def stop(self):
         tdSql.close()
diff --git a/tests/pytest/functions/function_csum.py b/tests/pytest/functions/function_csum.py
index 0e6e844f364a0b9c6194d47e0801f5587f70bb8c..b8ac352b071035eeca65519db74f77b7dd7a9ac6 100644
--- a/tests/pytest/functions/function_csum.py
+++ b/tests/pytest/functions/function_csum.py
@@ -59,6 +59,12 @@ class TDTestCase:
             tdSql.checkRows(0)
             return
 
+        if "order by tbname" in condition:
+            tdSql.error(self.csum_query_form(
+                col=col, alias=alias, table_expr=table_expr, condition=condition
+            ))
+            return
+
         if "group" in condition:
 
             tb_condition = condition.split("group by")[1].split(" ")[1]
@@ -195,11 +201,6 @@ class TDTestCase:
         # case20~21: with order by
         case20 = {"condition": "order by ts"}
         self.checkcsum(**case20)
-        case21 = {
-            "table_expr": "stb1",
-            "condition": "group by tbname order by tbname"
-        }
-        self.checkcsum(**case21)
 
         # case22: with union
         case22 = {
@@ -290,6 +291,11 @@ class TDTestCase:
             "condition": "group by tbname slimit 1 soffset 1"
         }
         tdSql.error(self.csum_query_form(**slimit_soffset_sql))
+        order_by_tbname_sql = {
+            "table_expr": "stb1",
+            "condition": "group by tbname order by tbname"
+        }
+        tdSql.error(self.csum_query_form(**order_by_tbname_sql))
 
         pass
 
@@ -398,9 +404,15 @@ class TDTestCase:
         self.csum_error_query()
 
     def run(self):
-        # run in  develop branch
-        self.csum_test_run()
-        pass
+        import traceback
+        try:
+            # run in  develop branch
+            self.csum_test_run()
+            pass
+        except Exception as e:
+            traceback.print_exc()
+            raise e
+
 
 
     def stop(self):
diff --git a/tests/pytest/functions/function_mavg.py b/tests/pytest/functions/function_mavg.py
index c859061388f3c7df79e80f141bbe493317f098a6..f18f8f566f6e28ae3c1c783f8b64e237d5e9aeca 100644
--- a/tests/pytest/functions/function_mavg.py
+++ b/tests/pytest/functions/function_mavg.py
@@ -154,6 +154,13 @@ class TDTestCase:
                 table_expr=table_expr, condition=condition
             ))
 
+        if "order by tbname" in condition.lower():
+            print(f"case in {line}: ", end='')
+            return tdSql.error(self.mavg_query_form(
+                sel=sel, func=func, col=col, m_comm=m_comm, k=k, r_comm=r_comm, alias=alias, fr=fr,
+                table_expr=table_expr, condition=condition
+            ))                
+
         if all(["group" in condition.lower(), "tbname" not in condition.lower()]):
             print(f"case in {line}: ", end='')
             return tdSql.error(self.mavg_query_form(
@@ -356,11 +363,11 @@ class TDTestCase:
         # case20~21: with order by
         case20 = {"condition": "order by ts"}
         self.checkmavg(**case20)
-        case21 = {
-            "table_expr": "stb1",
-            "condition": "group by tbname order by tbname"
-        }
-        self.checkmavg(**case21)
+        #case21 = {
+        #    "table_expr": "stb1",
+        #    "condition": "group by tbname order by tbname"
+        #}
+        #self.checkmavg(**case21)
 
         # case22: with union
         case22 = {
@@ -538,6 +545,11 @@ class TDTestCase:
         self.checkmavg(**err66)         # k: NULL
         err67 = {"k": 0.999999}
         self.checkmavg(**err67)         # k: left out of [1, 1000]
+        err68 = {
+            "table_expr": "stb1",
+            "condition": "group by tbname order by tbname" # order by tbname not supported
+        }
+        self.checkmavg(**err68)
 
         pass
 
@@ -646,9 +658,14 @@ class TDTestCase:
         self.mavg_error_query()
 
     def run(self):
-        # run in  develop branch
-        self.mavg_test_run()
-        pass
+        import traceback
+        try:
+            # run in  develop branch
+            self.mavg_test_run()
+            pass
+        except Exception as e:
+            traceback.print_exc()
+            raise e
 
 
     def stop(self):