diff --git a/tests/system-test/2-query/concat.py b/tests/system-test/2-query/concat.py
index 044c59c8e4..1167b444d2 100644
--- a/tests/system-test/2-query/concat.py
+++ b/tests/system-test/2-query/concat.py
@@ -82,7 +82,7 @@ class TDTestCase:
 
             if num > 8 or num < 2 :
                 [tdSql.error(f"select concat( {','.join( condition ) })  from {tbname} {where_condition}  {group} ") for group in groups ]
-                return
+                break
 
             tdSql.query(f"select  {','.join(condition)}  from {tbname}  ")
             rows = tdSql.queryRows
diff --git a/tests/system-test/2-query/concat_ws.py b/tests/system-test/2-query/concat_ws.py
index 7a7feb6245..876a1c8805 100644
--- a/tests/system-test/2-query/concat_ws.py
+++ b/tests/system-test/2-query/concat_ws.py
@@ -82,7 +82,7 @@ class TDTestCase:
 
             if num > 8 or num < 2 :
                 [tdSql.error(f"select concat_ws('_',  {','.join( condition ) })  from {tbname} {where_condition}  {group} ") for group in groups ]
-                return
+                break
 
             tdSql.query(f"select  {','.join(condition)}  from {tbname}  ")
             rows = tdSql.queryRows
diff --git a/tests/system-test/2-query/join.py b/tests/system-test/2-query/join.py
index ce59443d2f..01125ab275 100644
--- a/tests/system-test/2-query/join.py
+++ b/tests/system-test/2-query/join.py
@@ -99,6 +99,7 @@ class TDTestCase:
 
                 if not join_flag :
                     tdSql.error(sql=sql)
+                    break
                 if len(tblist) == 2:
                     if "ct1" in tblist or "t1" in tblist:
                         self.__join_current(sql, checkrows)