diff --git a/tests/pytest/tsdb/tsdbComp.py b/tests/pytest/tsdb/tsdbComp.py
index a46b3280fb9972a4c3f58cdd31bae1590dec5120..3563655efe4e69fab4c51a40818da205efb29837 100644
--- a/tests/pytest/tsdb/tsdbComp.py
+++ b/tests/pytest/tsdb/tsdbComp.py
@@ -69,14 +69,14 @@ class TDTestCase:
         tdSql.execute("drop table if exists stb1_0")
         tdSql.execute("drop table if exists stb1_1")
         tdSql.execute("insert into stb0_0 values(1614218412000,8637,78.861045,'R','bf3')(1614218422000,8637,98.861045,'R','bf3')")
-        tdSql.execute("alter table db2.stb0 add column col4 int")
-        tdSql.execute("alter table db2.stb0 drop column col2")
+        tdSql.execute("alter table db2.stb0 add column c4 int")
+        tdSql.execute("alter table db2.stb0 drop column c2")
         tdSql.execute("alter table db2.stb0  add tag t3 int;")        
         tdSql.execute("alter table db2.stb0 drop tag t1")
-        tdSql.execute("create table  if not exists stb2_0 (ts timestamp, col0 int, col1 float)  ")
+        tdSql.execute("create table  if not exists stb2_0 (ts timestamp, c0 int, c1 float)  ")
         tdSql.execute("insert into stb2_0 values(1614218412000,8637,78.861045)")
-        tdSql.execute("alter table stb2_0 add column col2 binary(4)")
-        tdSql.execute("alter table stb2_0 drop column col1")
+        tdSql.execute("alter table stb2_0 add column c2 binary(4)")
+        tdSql.execute("alter table stb2_0 drop column c1")
         tdSql.execute("insert into stb2_0 values(1614218422000,8638,'R')")
 
         # create  db utest