fixed case queryInterval.py

tests/pytest/query/nestedQuery/queryInterval.py

@@ -83,13 +83,13 @@ class TDTestCase:
         tdSql.checkData(29, 0, "2020-07-01 05:10:00.000")
 
         # subquery and parent query with top and bottom
-        tdSql.query("select top(avg_val,2) from(select avg(value) as avg_val,num from st where loc!='beijing0' group by num) order by avg_val desc;")
+        tdSql.query("select top(avg_val,2) from(select ts,avg(value) as avg_val,num from st where loc!='beijing0' group by num) order by avg_val desc;")
         tdSql.checkData(0, 1, 117)
-        tdSql.query("select bottom(avg_val,3) from(select avg(value) as avg_val,num from st where loc!='beijing0' group by num) order by avg_val asc;")
+        tdSql.query("select bottom(avg_val,3) from(select ts,avg(value) as avg_val,num from st where loc!='beijing0' group by num) order by avg_val asc;")
         tdSql.checkData(0, 1, 111)
 
         # 
-        tdSql.query("select top(avg_val,2) from(select avg(value) as avg_val from st where loc='beijing1' interval(8m) sliding(3m));")
+        tdSql.query("select top(avg_val,2) from(select ts,avg(value) as avg_val from st where loc='beijing1' interval(8m) sliding(3m));")
         tdSql.checkData(0, 1, 120)
 
         # clear env