[TD-1888]<test>add test case for td-1874

tests/pytest/query/bug1874.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("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+    def run(self):
+        tdSql.prepare()
+        print("==========step1")
+        print("create table && insert data")
+        
+        tdSql.execute("create table join_mt0 (ts timestamp, c1 int, c2 float, c3 bigint, c4 smallint, c5 tinyint, c6 double, c7 bool, c8 binary(10), c9 nchar(9)) TAGS(t1 int, t2 binary(12))")
+        tdSql.execute("create table join_mt1 (ts timestamp, c1 int, c2 float, c3 bigint, c4 smallint, c5 tinyint, c6 double, c7 bool, c8 binary(10), c9 nchar(9)) TAGS(t1 int, t2 binary(12))")
+        stable=0
+        insertRows = 1000
+        tbnum = 3
+        t0 = 1604298064000
+        tdLog.info("insert %d rows" % (insertRows))
+        for i in range(tbnum):
+            tdSql.execute("create table join_tb%d using join_mt%d tags(%d,'abc')" %(i,stable,i))
+            for j in range(insertRows):
+                ret = tdSql.execute(
+                    "insert into join_tb%d values (%d , %d,%d,%d,%d,%d,%d,%d, '%s','%s')" %
+                    (i,t0+i,i%100,i%100,i%100,i%100,i%100,i%100,i%100,'binary'+str(i%100),'nchar'+str(i%100)))
+        stable=stable+1
+        for i in range(tbnum):
+            tdSql.execute("create table join_1_tb%d using join_mt%d tags(%d,'abc')" %(i,stable,i))
+            for j in range(insertRows):
+                ret = tdSql.execute(
+                    "insert into join_tb%d values (%d , %d,%d,%d,%d,%d,%d,%d, '%s','%s')" %
+                    (i,t0+i,i%100,i%100,i%100,i%100,i%100,i%100,i%100,'binary'+str(i%100),'nchar'+str(i%100)))
+        print("==========step2")
+        print("join query ")
+        tdLog.info("select count(join_mt0.c1), first(join_mt0.c1) from join_mt0, join_mt1 where join_mt0.t1=join_mt1.t1 and join_mt0.ts=join_mt1.ts interval(10a) group by join_mt0.t1, join_mt0.t2, join_mt1.t1 order by join_mt0.ts desc, join_mt1.ts asc limit 10;")
+        tdSql.error("select count(join_mt0.c1), first(join_mt0.c1) from join_mt0, join_mt1 where join_mt0.t1=join_mt1.t1 and join_mt0.ts=join_mt1.ts interval(10a) group by join_mt0.t1, join_mt0.t2, join_mt1.t1 order by join_mt0.ts desc, join_mt1.ts asc limit 10;")
+        
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
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