Merge pull request #5697 from taosdata/test/TD-3652

[TD-3652]<test> add case for TD-3652 to resolve TD-3590

tests/pytest/fulltest.sh

@@ -217,6 +217,7 @@ python3 ./test.py -f query/floatCompare.py
 python3 ./test.py -f query/query1970YearsAf.py
 python3 ./test.py -f query/bug3351.py
 python3 ./test.py -f query/bug3375.py
+python3 ./test.py -f query/queryStddevWithGroupby.py
 
 
 

tests/pytest/query/queryStddevWithGroupby.py

@@ -0,0 +1,68 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+    def querysqls(self):
+        tdSql.query("select stddev(c1) from t10 group by c1")
+        tdSql.checkRows(6)
+        tdSql.checkData(0, 0, 0)
+        tdSql.checkData(1, 0, 0)
+        tdSql.checkData(2, 0, 0)
+        tdSql.checkData(3, 0, 0)
+        tdSql.checkData(4, 0, 0)
+        tdSql.checkData(5, 0, 0)
+        tdSql.query("select stddev(c2) from t10")
+        tdSql.checkData(0, 0, 0.5)
+
+    def run(self):
+        tdSql.execute("drop database if exists db")
+        tdSql.execute("create database  if not exists db keep 36500")
+        tdSql.execute("use db")
+
+        tdLog.printNoPrefix("==========step1:create table && insert data")
+        tdSql.execute("create stable stb1 (ts timestamp , c1 int ,c2 float) tags(t1 int)")
+        tdSql.execute("create table t10 using stb1 tags(1)")
+        tdSql.execute("insert into t10 values ('1969-12-31 00:00:00.000', 2,1)")
+        tdSql.execute("insert into t10 values ('1970-01-01 00:00:00.000', 3,1)")
+        tdSql.execute("insert into t10 values (0, 4,1)")
+        tdSql.execute("insert into t10 values (now-18725d, 1,2)")
+        tdSql.execute("insert into t10 values ('2021-04-06 00:00:00.000', 5,2)")
+        tdSql.execute("insert into t10 values (now+1d,6,2)")
+
+        tdLog.printNoPrefix("==========step2:query and check")
+        self.querysqls()
+
+        tdLog.printNoPrefix("==========step3:after wal,check again")
+        tdSql.query("show dnodes")
+        index = tdSql.getData(0, 0)
+        tdDnodes.stop(index)
+        tdDnodes.start(index)
+        self.querysqls()
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())