diff --git a/tests/pytest/query/sliding.py b/tests/pytest/query/sliding.py
index f5c59ec1bae4f54c5e4acad90d5b5172c0fa3b7a..212e51d146b5655eaead3ce7dcf8646822424a23 100644
--- a/tests/pytest/query/sliding.py
+++ b/tests/pytest/query/sliding.py
@@ -62,6 +62,54 @@ class TDTestCase:
         tdSql.query("select sum(k) from t1 interval(1d) sliding(1h)")
         tdSql.checkRows(24)
 
+        # TD-14690
+        tdSql.execute("drop database if exists ceil")
+        tdSql.execute("create database ceil keep 36500")
+        tdSql.execute("use ceil")
+        tdSql.execute("create stable stable_1 (ts timestamp , q_nchar nchar(20) ) tags(loc nchar(100))")
+        tdSql.execute("create table stable_1_1 using stable_1 tags('stable_1_1')")
+        tdSql.execute("create table stable_1_2 using stable_1 tags('stable_1_2')")
+
+        self.ts = 1630000000000
+        for i in range(10):
+            if i <= 5:
+                tdSql.execute("insert into stable_1_1 (ts , q_nchar) values(%d, %d)" % (self.ts + i * 1000, i % 5 + 1))
+                tdSql.execute("insert into stable_1_2 (ts , q_nchar) values(%d, %d)" % (self.ts + i * 1000, i % 5 + 1))
+            else:
+                tdSql.execute("insert into stable_1_1 (ts , q_nchar) values(%d, %d)" % (self.ts + 39000 + i * 1000, i % 5))
+                tdSql.execute("insert into stable_1_2 (ts , q_nchar) values(%d, %d)" % (self.ts + 10000 + i * 1000, i % 5 + 1))
+
+        tdSql.execute("insert into stable_1_1 (ts , q_nchar) values(%d, %d)" % (1630000049000, 5))
+        tdSql.execute("insert into stable_1_2 (ts , q_nchar) values(%d, %d)" % (1630000020000, 1))
+
+        tdSql.query("select COUNT(q_nchar) from stable_1 interval(20s) sliding(10s) order by ts")
+        tdSql.checkRows(6)
+        tdSql.checkData(0, 1, 12)
+        tdSql.checkData(1, 1, 16)
+        tdSql.checkData(2, 1, 5)
+        tdSql.checkData(3, 1, 1)
+        tdSql.checkData(4, 1, 5)
+        tdSql.checkData(5, 1, 5)
+
+        tdSql.query("select COUNT(q_nchar) from (select * from stable_1) interval(20s) sliding(10s) order by ts")
+        tdSql.checkRows(6)
+        tdSql.checkData(0, 1, 12)
+        tdSql.checkData(1, 1, 16)
+        tdSql.checkData(2, 1, 5)
+        tdSql.checkData(3, 1, 1)
+        tdSql.checkData(4, 1, 5)
+        tdSql.checkData(5, 1, 5)
+        
+        tdSql.query("select COUNT(q_nchar) from (select * from stable_1 order by ts) interval(20s) sliding(10s);")
+        tdSql.checkRows(6)
+        tdSql.checkData(0, 1, 12)
+        tdSql.checkData(1, 1, 16)
+        tdSql.checkData(2, 1, 5)
+        tdSql.checkData(3, 1, 1)
+        tdSql.checkData(4, 1, 5)
+        tdSql.checkData(5, 1, 5)
+
+
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)