diff --git a/tests/pytest/query/queryCnameDisplay.py b/tests/pytest/query/queryCnameDisplay.py
index 8864c0e37621c72ad39fb4249749244b1fbe8367..66a7f85120fe13293996d1bd3153b6fe9b1d6a72 100644
--- a/tests/pytest/query/queryCnameDisplay.py
+++ b/tests/pytest/query/queryCnameDisplay.py
@@ -49,10 +49,11 @@ class TDTestCase:
 
         # select as cname with cname_list
         sql_seq = f'select count(ts) as {cname_list[0]}, sum(pi1) as {cname_list[1]}, avg(pi2) as {cname_list[2]}, count(pf1) as {cname_list[3]}, count(pf2) as {cname_list[4]}, count(ps1) as {cname_list[5]}, min(pi3) as {cname_list[6]}, max(pi4) as {cname_list[7]}, count(pb1) as {cname_list[8]}, count(ps2) as {cname_list[9]} from regular_table_cname_check'
-        sql_seq_no_as = sql_seq.replace('as ', '')
+        sql_seq_no_as = sql_seq.replace(' as ', ' ')
+        print(sql_seq)
+        print(sql_seq_no_as)
         res = tdSql.getColNameList(sql_seq)
         res_no_as = tdSql.getColNameList(sql_seq_no_as)
-        
         # cname[1] > 64, it is expected to be equal to 64
         cname_list_1_expected = cname_list[1][:-1]
         cname_list[1] = cname_list_1_expected
@@ -79,7 +80,7 @@ class TDTestCase:
 
         # select as cname with cname_list
         sql_seq = f'select count(ts) as {cname_list[0]}, sum(pi1) as {cname_list[1]}, avg(pi2) as {cname_list[2]}, count(pf1) as {cname_list[3]}, count(pf2) as {cname_list[4]}, count(ps1) as {cname_list[5]}, min(pi3) as {cname_list[6]}, max(pi4) as {cname_list[7]}, count(pb1) as {cname_list[8]}, count(ps2) as {cname_list[9]}, count(si1) as {cname_list[10]}, count(si2) as {cname_list[11]}, count(sf1) as {cname_list[12]}, count(sf2) as {cname_list[13]}, count(ss1) as {cname_list[14]}, count(si3) as {cname_list[15]}, count(si4) as {cname_list[16]}, count(sb1) as {cname_list[17]}, count(ss2) as {cname_list[18]} from super_table_cname_check'
-        sql_seq_no_as = sql_seq.replace('as ', '')
+        sql_seq_no_as = sql_seq.replace(' as ', ' ')
         res = tdSql.getColNameList(sql_seq)
         res_no_as = tdSql.getColNameList(sql_seq_no_as)