[TD-3789]<test> add case for TD-3789, and fix util.sql

tests/pytest/alter/alterTabAddTagWithNULL.py

+###################################################################
+#           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(f"start to execute {__file__}")
+        tdSql.init(conn.cursor(), logSql)
+
+    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 table stbtag (ts timestamp, c1 int) TAGS(t1 int)")
+        tdSql.execute("create table tag1 using stbtag tags(1)")
+
+        tdLog.printNoPrefix("==========step2:alter stb add tag create new chiltable")
+        tdSql.execute("alter table stbtag add tag t2 int")
+        tdSql.execute("alter table stbtag add tag t3 tinyint")
+        tdSql.execute("alter table stbtag add tag t4 smallint ")
+        tdSql.execute("alter table stbtag add tag t5 bigint")
+        tdSql.execute("alter table stbtag add tag t6 float ")
+        tdSql.execute("alter table stbtag add tag t7 double ")
+        tdSql.execute("alter table stbtag add tag t8 bool ")
+        tdSql.execute("alter table stbtag add tag t9 binary(10) ")
+        tdSql.execute("alter table stbtag add tag t10 nchar(10)")
+
+        tdSql.execute("create table tag2 using stbtag tags(2, 22, 23, 24, 25, 26.1, 27.1, 1, 'binary9', 'nchar10')")
+        tdSql.query( "select tbname, t1, t2, t3, t4, t5, t6, t7, t8, t9, t10 from stbtag" )
+        tdSql.checkData(1, 0, "tag2")
+        tdSql.checkData(1, 1, 2)
+        tdSql.checkData(1, 2, 22)
+        tdSql.checkData(1, 3, 23)
+        tdSql.checkData(1, 4, 24)
+        tdSql.checkData(1, 5, 25)
+        tdSql.checkData(1, 6, 26.1)
+        tdSql.checkData(1, 7, 27.1)
+        tdSql.checkData(1, 8, 1)
+        tdSql.checkData(1, 9, "binary9")
+        tdSql.checkData(1, 10, "nchar10")
+
+        tdLog.printNoPrefix("==========step3:alter stb drop tag create new chiltable")
+        tdSql.execute("alter table stbtag drop tag t2 ")
+        tdSql.execute("alter table stbtag drop tag t3 ")
+        tdSql.execute("alter table stbtag drop tag t4 ")
+        tdSql.execute("alter table stbtag drop tag t5 ")
+        tdSql.execute("alter table stbtag drop tag t6 ")
+        tdSql.execute("alter table stbtag drop tag t7 ")
+        tdSql.execute("alter table stbtag drop tag t8 ")
+        tdSql.execute("alter table stbtag drop tag t9 ")
+        tdSql.execute("alter table stbtag drop tag t10 ")
+
+        tdSql.execute("create table tag3 using stbtag tags(3)")
+        tdSql.query("select * from stbtag where tbname like 'tag3' ")
+        tdSql.checkCols(3)
+        tdSql.query("select tbname, t1 from stbtag where tbname like 'tag3' ")
+        tdSql.checkData(0, 1, 3)
+
+
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success(f"{__file__} successfully executed")
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
\ No newline at end of file

tests/pytest/fulltest.sh

@@ -219,6 +219,8 @@ python3 ./test.py -f query/bug3351.py
 python3 ./test.py -f query/bug3375.py
 python3 ./test.py -f query/queryJoin10tables.py
 python3 ./test.py -f query/queryStddevWithGroupby.py
+python3 ./test.py -f query/querySecondtscolumnTowherenow.py
+
 
 #stream
 python3 ./test.py -f stream/metric_1.py
@@ -234,6 +236,7 @@ python3 ./test.py -f stream/table_n.py
 
 #alter table
 python3 ./test.py -f alter/alter_table_crash.py
+python3 ./test.py -f alter/alterTabAddTagWithNULL.py
 
 # client
 python3 ./test.py -f client/client.py

tests/pytest/util/sql.py

@@ -105,6 +105,14 @@ class TDSql:
             args = (caller.filename, caller.lineno, self.sql, self.queryRows, expectRows)
             tdLog.exit("%s(%d) failed: sql:%s, queryRows:%d != expect:%d" % args)
 
+    def checkCols(self, expectCols):
+        if self.queryCols == expectCols:
+            tdLog.info("sql:%s, queryCols:%d == expect:%d" % (self.sql, self.queryCols, expectCols))
+        else:
+            caller = inspect.getframeinfo(inspect.stack()[1][0])
+            args = (caller.filename, caller.lineno, self.sql, self.queryCols, expectCols)
+            tdLog.exit("%s(%d) failed: sql:%s, queryCols:%d != expect:%d" % args)
+
     def checkRowCol(self, row, col):
         caller = inspect.getframeinfo(inspect.stack()[2][0])
         if row < 0: