diff --git a/tests/pytest/query/queryInterval.py b/tests/pytest/query/queryInterval.py
index ec3255ba7f12302f6ee00aeda391c11972f1cf26..98b8c9fbef819caebe34fce96bec66da99176131 100644
--- a/tests/pytest/query/queryInterval.py
+++ b/tests/pytest/query/queryInterval.py
@@ -32,30 +32,44 @@ class TDTestCase:
         tdSql.execute("insert into t0 using st tags('beijing') values(%d, 220) (%d, 221) (%d, 225) (%d, 228) (%d, 222)" 
                         % (self.ts, self.ts + 1000000000, self.ts + 2000000000, self.ts + 3000000000, self.ts + 6000000000))
         tdSql.execute("insert into t1 using st tags('shanghai') values(%d, 220) (%d, 221) (%d, 225) (%d, 228) (%d, 222)" 
-                        % (self.ts, self.ts + 2000000000, self.ts + 4000000000, self.ts + 5000000000, self.ts + 7000000000))        
+                        % (self.ts, self.ts + 2000000000, self.ts + 4000000000, self.ts + 5000000000, self.ts + 7000000000))             
+                
 
         tdSql.query("select avg(voltage) from st interval(1n)")
-        tdSql.checkRows(4)
-        tdSql.checkData(0, 1, 220.0)
-        tdSql.checkData(1, 1, 222.33333333333334)
-        tdSql.checkData(2, 1, 227.0)
-        tdSql.checkData(3, 1, 222.0)
+        tdSql.checkRows(3)        
+        tdSql.checkData(0, 0, "2020-07-01 00:00:00")
+        tdSql.checkData(0, 1, 221.4)        
+        tdSql.checkData(1, 0, "2020-08-01 00:00:00")
+        tdSql.checkData(1, 1, 227.0)        
+        tdSql.checkData(2, 0, "2020-09-01 00:00:00")
+        tdSql.checkData(2, 1, 222.0)
         
         tdSql.query("select avg(voltage) from st interval(1n, 15d)")
         tdSql.checkRows(4)
+        tdSql.checkData(0, 0, "2020-06-16 00:00:00")
         tdSql.checkData(0, 1, 220.333333)
+        tdSql.checkData(1, 0, "2020-07-16 00:00:00")
         tdSql.checkData(1, 1, 224.666666)
+        tdSql.checkData(2, 0, "2020-08-16 00:00:00")
         tdSql.checkData(2, 1, 225.0)
+        tdSql.checkData(3, 0, "2020-09-16 00:00:00")
         tdSql.checkData(3, 1, 222.0)
 
         tdSql.query("select avg(voltage) from st interval(1n, 15d) group by loc")
         tdSql.checkRows(7)
+        tdSql.checkData(0, 0, "2020-06-16 00:00:00")
         tdSql.checkData(0, 1, 220.5)
+        tdSql.checkData(1, 0, "2020-07-16 00:00:00")
         tdSql.checkData(1, 1, 226.5)
+        tdSql.checkData(2, 0, "2020-08-16 00:00:00")
         tdSql.checkData(2, 1, 222.0)
+        tdSql.checkData(3, 0, "2020-06-16 00:00:00")
         tdSql.checkData(3, 1, 220.0)
+        tdSql.checkData(4, 0, "2020-07-16 00:00:00")
         tdSql.checkData(4, 1, 221.0)
+        tdSql.checkData(5, 0, "2020-08-16 00:00:00")
         tdSql.checkData(5, 1, 226.5)
+        tdSql.checkData(6, 0, "2020-09-16 00:00:00")
         tdSql.checkData(6, 1, 222.0)
 
     def stop(self):
diff --git a/tests/pytest/tools/taosdemo.py b/tests/pytest/tools/taosdemo.py
index 5bf8ebaf03beb052f09d80b92c6b6b6d588e4f4f..1a976aef594576ba29b928465fc38baea6dcb63e 100644
--- a/tests/pytest/tools/taosdemo.py
+++ b/tests/pytest/tools/taosdemo.py
@@ -55,6 +55,12 @@ class TDTestCase:
         tdSql.query("select count(*) from meters")
         tdSql.checkData(0, 0, self.numberOfTables * self.numberOfRecords)
 
+        tdSql.query("select sum(f1) from test.meters interval(1h) sliding(30m)")
+        tdSql.checkRows(2)
+
+        tdSql.query("select apercentile(f1, 1) from test.meters interval(10s)")
+        tdSql.checkRows(11)
+
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)