diff --git a/tests/system-test/0-others/taosdShell.py b/tests/system-test/0-others/taosdShell.py
index 7ad7e4d0ef..2125b5eebe 100644
--- a/tests/system-test/0-others/taosdShell.py
+++ b/tests/system-test/0-others/taosdShell.py
@@ -136,7 +136,7 @@ class TDTestCase:
         tdSql.query("use source_db")
         tdSql.query("create table if not exists source_db.stb (ts timestamp, k int) tags (a int);")
         tdSql.query("create table source_db.ct1 using source_db.stb tags(1000);create table source_db.ct2 using source_db.stb tags(2000);create table source_db.ct3 using source_db.stb tags(3000);")
-        tdSql.query("create stream s1 into source_db.output_stb as select _wstart AS start, min(k), max(k), sum(k) from source_db.stb interval(10m);")
+        tdSql.query("create stream s1 into source_db.output_stb as select _wstart AS startts, min(k), max(k), sum(k) from source_db.stb interval(10m);")
 
 
         #TD-19944 -Q=3 
diff --git a/tests/system-test/1-insert/database_pre_suf.py b/tests/system-test/1-insert/database_pre_suf.py
index 862edbdde9..488dfebff5 100755
--- a/tests/system-test/1-insert/database_pre_suf.py
+++ b/tests/system-test/1-insert/database_pre_suf.py
@@ -108,7 +108,7 @@ class TDTestCase:
 
         
         # create stream
-        tdSql.execute('''create stream current_stream into stream_max_stable_1 as select _wstart as start, _wend as wend, max(q_int) as max_int, min(q_bigint) as min_int from stable_1 where ts is not null interval (5s);''')
+        tdSql.execute('''create stream current_stream into stream_max_stable_1 as select _wstart as startts, _wend as wend, max(q_int) as max_int, min(q_bigint) as min_int from stable_1 where ts is not null interval (5s);''')
         
         # insert data
         for i in range(num_random*n):        
@@ -187,20 +187,20 @@ class TDTestCase:
         
         sleep(5)
         # stream data check
-        tdSql.query("select start,wend,max_int from stream_max_stable_1 ;")
+        tdSql.query("select startts,wend,max_int from stream_max_stable_1 ;")
         tdSql.checkRows(20)
         tdSql.query("select sum(max_int) from stream_max_stable_1 ;")
         stream_data_1 = tdSql.queryResult[0][0]
         tdSql.query("select sum(min_int) from stream_max_stable_1 ;")
         stream_data_2 = tdSql.queryResult[0][0]
-        tdSql.query("select sum(max_int),sum(min_int) from (select _wstart as start, _wend as wend, max(q_int) as max_int, min(q_bigint) as min_int from stable_1 where ts is not null interval (5s));")
+        tdSql.query("select sum(max_int),sum(min_int) from (select _wstart as startts, _wend as wend, max(q_int) as max_int, min(q_bigint) as min_int from stable_1 where ts is not null interval (5s));")
         sql_data_1 = tdSql.queryResult[0][0]
         sql_data_2 = tdSql.queryResult[0][1]
         
         self.stream_value_check(stream_data_1,sql_data_1)       
         self.stream_value_check(stream_data_2,sql_data_2)
         
-        tdSql.query("select sum(max_int),sum(min_int) from (select _wstart as start, _wend as wend, max(q_int) as max_int, min(q_bigint) as min_int from stable_1 interval (5s));")
+        tdSql.query("select sum(max_int),sum(min_int) from (select _wstart as startts, _wend as wend, max(q_int) as max_int, min(q_bigint) as min_int from stable_1 interval (5s));")
         sql_data_1 = tdSql.queryResult[0][0]
         sql_data_2 = tdSql.queryResult[0][1]