diff --git a/tests/perftest-scripts/perftest-query.sh b/tests/perftest-scripts/perftest-query.sh
index 8498094181857095fa52123b364119801dc93d56..07055d64b0e63c48a7c7fec6b8f96198d1928437 100755
--- a/tests/perftest-scripts/perftest-query.sh
+++ b/tests/perftest-scripts/perftest-query.sh
@@ -39,6 +39,8 @@ function buildTDengine {
 	cd $WORK_DIR/TDengine
 
 	git remote update > /dev/null
+	git reset --hard HEAD
+	git checkout develop
 	REMOTE_COMMIT=`git rev-parse --short remotes/origin/develop`
 	LOCAL_COMMIT=`git rev-parse --short @`
 
@@ -54,15 +56,16 @@ function buildTDengine {
 		cd debug
 		rm -rf *
 		cmake .. > /dev/null
-		make > /dev/null
-		make install
+		make && make install > /dev/null		
 	fi
 }
 
 function runQueryPerfTest {
 	[ -f $PERFORMANCE_TEST_REPORT ] && rm $PERFORMANCE_TEST_REPORT
 	nohup $WORK_DIR/TDengine/debug/build/bin/taosd -c /etc/taosperf/ > /dev/null 2>&1 &
-	echoInfo "Run Performance Test"
+	echoInfo "Wait TDengine to start"
+	sleep 60
+	echoInfo "Run Performance Test"	
 	cd $WORK_DIR/TDengine/tests/pytest
 	
 	python3 query/queryPerformance.py -c $LOCAL_COMMIT | tee -a $PERFORMANCE_TEST_REPORT
@@ -104,6 +107,7 @@ function sendReport {
 stopTaosd
 buildTDengine
 runQueryPerfTest
+stopTaosd
 
 echoInfo "Send Report"
 sendReport
diff --git a/tests/pytest/fulltest.sh b/tests/pytest/fulltest.sh
index 9c5ee6aae0e925ef36c17bd7418a2ad7f7e319f0..6b710732caf6368f680cb0cd784add47426db1c6 100755
--- a/tests/pytest/fulltest.sh
+++ b/tests/pytest/fulltest.sh
@@ -66,7 +66,7 @@ python3 ./test.py -f tag_lite/int.py
 python3 ./test.py -f tag_lite/set.py
 python3 ./test.py -f tag_lite/smallint.py
 python3 ./test.py -f tag_lite/tinyint.py
-
+python3 ./test.py -f tag_lite/alter_tag.py
 #python3 ./test.py -f dbmgmt/database-name-boundary.py
 
 python3 ./test.py -f import_merge/importBlock1HO.py
diff --git a/tests/pytest/tag_lite/alter_tag.py b/tests/pytest/tag_lite/alter_tag.py
new file mode 100644
index 0000000000000000000000000000000000000000..aafffc19c301b07ba5aa5bbfc2f8ca37c43e4d80
--- /dev/null
+++ b/tests/pytest/tag_lite/alter_tag.py
@@ -0,0 +1,52 @@
+###################################################################
+#           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 tdLog
+from util.cases import tdCases
+from util.sql import tdSql
+from util.dnodes import tdDnodes
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+        self.ts = 1538548685000
+
+    def run(self):
+        tdSql.prepare()
+
+        print("==============step1")
+        tdSql.execute(
+            "CREATE TABLE IF NOT EXISTS ampere (ts TIMESTAMP(8),ampere DOUBLE(8)) TAGS (device_name BINARY(50),build_id BINARY(50),project_id BINARY(50),alias BINARY(50))")
+        tdSql.execute("insert into d1001 using ampere tags('test', '2', '2', '2') VALUES (now, 123)")
+        tdSql.execute("ALTER TABLE ampere ADD TAG variable_id BINARY(50)")
+
+        print("==============step2")
+
+        tdSql.execute("insert into d1002 using ampere tags('test', '2', '2', '2', 'test') VALUES (now, 124)")
+
+        tdSql.query("select * from ampere")
+        tdSql.checkRows(2)
+        tdSql.checkData(0, 6, None)
+        tdSql.checkData(1, 6, 'test')        
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())