diff --git a/tests/pytest/tag_lite/create-tags-boundary.py b/tests/pytest/tag_lite/create-tags-boundary.py
new file mode 100644
index 0000000000000000000000000000000000000000..de9711afae4c6a0c4bf0383c0fbdda5b98b50b4e
--- /dev/null
+++ b/tests/pytest/tag_lite/create-tags-boundary.py
@@ -0,0 +1,55 @@
+###################################################################
+#           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 *
+
+
+class TDTestCase:
+    def init(self, conn):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor())
+
+    def run(self):
+        tdSql.prepare()
+
+        boundary = 32
+        for x in range(0, boundary):
+            stb_name = "stb%d" % x
+
+            tagSeq = "tag0 int"
+            for y in range(1, x+1):
+                tagSeq = tagSeq + ", tag%d int" % y
+
+            tdLog.info("create table %s (ts timestamp, value int) tags (%s)" % (stb_name, tagSeq))
+            tdSql.execute("create table %s (ts timestamp, value int) tags (%s)" % (stb_name, tagSeq))
+
+        tdSql.query("show stables")
+        tdSql.checkRows(boundary)
+
+        stb_name = "stb%d" % (boundary+1)
+        tagSeq = tagSeq + ", tag%d int" % (boundary+1)
+        tdLog.info("create table %s (ts timestamp, value int) tags (%s)" % (stb_name, tagSeq))
+        tdSql.error("create table %s (ts timestamp, value int) tags (%s)" % (stb_name, tagSeq))
+        tdSql.query("show stables")
+        tdSql.checkRows(boundary)
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
diff --git a/tests/pytest/tag_lite/datatype-without-alter.py b/tests/pytest/tag_lite/datatype-without-alter.py
new file mode 100644
index 0000000000000000000000000000000000000000..1a8d05d648a4c0fe7bb28458f15bd4e996ad946c
--- /dev/null
+++ b/tests/pytest/tag_lite/datatype-without-alter.py
@@ -0,0 +1,98 @@
+###################################################################
+#       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
+import taos
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+
+
+class TDTestCase:
+    def init(self, conn):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor())
+
+    def run(self):
+        self.ntables = 10
+        self.rowsPerTable = 10
+        self.startTime = 1520000010000
+
+        tdDnodes.stop(1)
+        tdDnodes.deploy(1)
+        tdDnodes.start(1)
+
+        tdLog.info("================= step0")
+        tdSql.execute('reset query cache')
+        tdLog.info("drop database db if exits")
+        tdSql.execute('drop database if exists db')
+        tdLog.info("================= step1")
+        tdSql.execute('create database db maxtables 4')
+        tdLog.sleep(5)
+        tdSql.execute('use db')
+
+        tdLog.info("================= step1")
+        tdLog.info("create 1 super table")
+        tdSql.execute('create table stb (ts timestamp, i int) \
+          tags (tin int, tfl float, tbg bigint, tdo double, tbi binary(10), tbl bool)')
+
+        tdLog.info("================= step2")
+        tdLog.info("create %d tables" % self.ntables)
+        for tid in range(1, self.ntables + 1):
+            tdSql.execute(
+                'create table tb%d using stb tags(%d,%f,%ld,%f,\'%s\',%d)' %
+                (tid,
+                 tid %
+                 3,
+                 1.2 *
+                 tid,
+                 self.startTime +
+                 tid,
+                 1.22 *
+                 tid,
+                 't' +
+                 str(tid),
+                    tid %
+                    2))
+        tdLog.sleep(5)
+
+        tdLog.info("================= step3")
+        tdLog.info(
+            "insert %d data in to each %d tables" %
+            (self.rowsPerTable, self.ntables))
+        for rid in range(1, self.rowsPerTable + 1):
+            sqlcmd = ['insert into']
+            for tid in range(1, self.ntables + 1):
+                sqlcmd.append(
+                    'tb%d values(%ld,%d)' %
+                    (tid, self.startTime + rid, rid))
+            tdSql.execute(" ".join(sqlcmd))
+        tdSql.query('select count(*) from stb')
+        tdSql.checkData(0, 0, self.rowsPerTable * self.ntables)
+
+        tdLog.info("================= step6")
+        tdLog.info("group and filter by tag1 int")
+        tdSql.query('select max(i) from stb where tbl=0 group by tin')
+        tdSql.checkRows(3)
+        tdSql.execute('reset query cache')
+        tdSql.query('select max(i) from stb where tbl=true group by tin')
+        tdSql.checkData(2, 0, self.rowsPerTable)
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())