Merge pull request #2367 from taosdata/joinquerycases

add test cases for join queries

tests/pytest/query/queryJoin.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
+import taos
+from util.log import *
+from util.cases import *
+from util.sql import *
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor())
+
+    def run(self):
+        tdSql.prepare()
+
+        print("======= Step 1 prepare data=========")
+        tdSql.execute(
+            "create table stb1 (ts timestamp, c1 int, c2 float) tags(t1 int, t2 binary(10), t3 nchar(10))")
+        tdSql.execute(
+            '''insert into tb1 using stb1 tags(1,'tb1', '表1') values ('2020-04-18 15:00:00.000', 1, 0.1)
+            ('2020-04-18 15:00:01.000', 1,0.1) ('2020-04-18 15:00:03.000', 3, 0.3) ('2020-04-18 15:00:04.000', 4,0.4)''')
+        tdSql.execute(
+            '''insert into tb2 using stb1 tags(2,'tb2', '表2') values ('2020-04-18 15:00:00.000', 21, 2.1)
+            ('2020-04-18 15:00:01.000', 22,2.2) ('2020-04-18 15:00:02.000', 22, 2.1) ('2020-04-18 15:00:03.000', 23,2.2)''')
+
+        tdSql.execute(
+            "create table stb_t (ts timestamp, temperature int, humidity float) tags(id int, name binary(10), dscrption nchar(10))")
+        tdSql.execute(
+            '''insert into tb_t1 using stb_t tags(1,'tb_t1', '温度表1') values ('2020-04-18 15:00:00.000', 25, 0.5)
+            ('2020-04-18 15:00:01.000', 25, 0.5) ('2020-04-18 15:00:02.000', 26, 0.7) ('2020-04-18 15:00:03.000', 27, 0.8)''')
+        tdSql.execute(
+            '''insert into tb_t2 using stb_t tags(2,'tb_t2', '温度表2') values ('2020-04-18 15:00:00.000', 33, 0.9)
+            ('2020-04-18 15:00:01.000', 35, 1.1) ('2020-04-18 15:00:03.000', 36, 1.3) ('2020-04-18 15:00:04.000', 37, 1.4)''')
+
+        tdSql.execute(
+            "create table stb_p (ts timestamp, pressure float) tags(id int, name binary(10), dscrption nchar(10), location binary(20))")
+        tdSql.execute(
+            '''insert into tb_p1 using stb_p tags(1,'tb_p1', '压力计1', 'beijing') values ('2020-04-18 15:00:00.000', 76.6)
+            ('2020-04-18 15:00:01.000', 76.5) ('2020-04-18 15:00:01.500', 77.1) ('2020-04-18 15:00:02.000', 75.3)
+            ('2020-04-18 15:00:03.000', 75.1) ('2020-04-18 15:00:04.500', 77.3)''')
+        tdSql.execute(
+            '''insert into tb_p2 using stb_p tags(2,'tb_p2', '压力计2', 'shenzhen') values ('2020-04-18 14:59:59.000', 74.6)
+            ('2020-04-18 15:00:01.000', 74.5) ('2020-04-18 15:00:01.500', 73.6) ('2020-04-18 15:00:02.000', 74.5)
+            ('2020-04-18 15:00:02.500', 73.9) ('2020-04-18 15:00:03.000', 73.5)''')
+
+        tdSql.execute(
+            "create table stb_v (ts timestamp, velocity float) tags(id int, name binary(10), dscrption nchar(10), location binary(20))")
+        tdSql.execute(
+            '''insert into tb_v1 using stb_v tags(1,'tb_v1', '速度计1', 'beijing ') values ('2020-04-18 15:00:00.000', 176.6)
+            ('2020-04-18 15:00:01.000', 176.5)''')
+        tdSql.execute(
+            '''insert into tb_v2 using stb_v tags(2,'tb_v2', '速度计2', 'shenzhen') values ('2020-04-18 15:00:00.000', 171.6)
+            ('2020-04-18 15:00:01.000', 171.5)''')
+
+        # explicit join should not work
+        tdSql.error("select * from stb_p join stb_t on (stb_p.id = stb_t.id)")
+        tdSql.error("select * from tb1 join tb2 on (tb1.ts=tb2.ts)")
+        tdSql.error(
+            "select * from stb_p join stb_t on (stb_p.ts=stb_t.ts and stb_p.id = stb_t.id)")
+
+        # alias should not work
+        tdSql.error("select * from stb_p p join stb_t t on (p.id = t.id)")
+
+        # join queries
+        tdSql.query(
+            "select * from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id")
+        tdSql.checkRows(6)
+
+        tdSql.query(
+            "select * from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id order by ts desc")
+        tdSql.checkColumnSorted(0, "desc")
+
+        tdSql.error(
+            "select ts, pressure, temperature, id, dscrption from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id")
+
+        tdSql.query("select stb_p.ts, pressure, stb_t.temperature, stb_p.id, stb_p.dscrption from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id")
+        tdSql.checkRows(6)
+
+        tdSql.query("select stb_t.ts, stb_p.pressure, stb_t.temperature,stb_p.id,stb_p.dscrption from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id")
+        tdSql.checkRows(6)
+
+        tdSql.error(
+            "select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.id, stb_p.dscrption, stb_p.pressure from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id group by name")
+        tdSql.error(
+            "select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.id, stb_p.dscrption, stb_p.pressure from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id group by stb_t.name")
+        tdSql.error(
+            "select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.id, stb_p.dscrption, stb_p.pressure from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id group by stb_t.id")
+        tdSql.error(
+            "select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.id, stb_p.dscrption, stb_p.pressure from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.name;")
+        tdSql.error(
+            "select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.id, stb_p.dscrption, stb_p.pressure from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.location = stb_t.name")
+
+        tdSql.execute("alter table stb_t add tag pid int")
+        tdSql.execute("alter table tb_t1 set tag pid=2")
+        tdSql.execute("alter table tb_t2 set tag pid=1")
+
+        tdSql.query("select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.id, stb_p.dscrption, stb_p.pressure from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.pid")
+        tdSql.checkRows(3)
+
+        tdSql.query("select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.id, stb_p.dscrption, stb_p.pressure from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id")
+        tdSql.checkRows(6)
+        
+        tdSql.query("select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.id, stb_p.dscrption, stb_p.pressure from stb_p, stb_t where stb_p.ts=stb_t.ts and stb_p.id = stb_t.id")
+        tdSql.checkRows(6)
+
+        tdSql.query("select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_t.pid, stb_p.id, stb_p.dscrption, stb_p.pressure,stb_v.velocity from stb_p, stb_t, stb_v where stb_p.ts=stb_t.ts and stb_p.ts=stb_v.ts and stb_p.id = stb_t.id")
+        tdSql.checkRows(2)
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())