Merge pull request #9727 from taosdata/test/case_td_12861

[TD-12861]<test>(query): illegal query SQL

tests/system-test/2-query/TD-12861.py

+###################################################################
+#           Copyright (c) 2020 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 taos
+import time
+
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+
+
+class TDTestCase:
+    def __init__(self):
+        self.err_case = 0
+        self.curret_case = 0
+
+    def caseDescription(self):
+
+        '''
+        case1 <wenzhouwww>: [TD-12861] : this is an test case for SQL error for == and <> for basic query
+        '''
+        return
+
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+    def create_stb(self):
+        basetime = int(round(time.time() * 1000))
+        tdSql.prepare()
+        tdSql.execute(f"create stable stb1(ts timestamp, c1 int) tags (tag1 int)")
+        for i in range(10):
+            tdSql.execute(f"create table t{i} using stb1 tags({i})")
+            tdSql.execute(f"insert into t{i} values ({basetime}, {i})")
+
+        pass
+
+    def check_issue(self):
+
+        tdSql.error("select first(c1) == max(c1) from stb1;")
+        tdSql.error("select first(c1) == max(c1) from stb1 group by tbname;")
+        tdSql.error("select first(c1) == first(*) from stb1;")
+        tdSql.error("select first(c1) == first(*) from stb1 group by tbname;")
+        tdSql.error("select first(*) == max(c1) from stb1;")
+        tdSql.error("select first(*) == max(c1) from stb1 group by tbname;")
+        tdSql.error("select first(c1) <> max(c1) from stb1 group by tbname;")
+        tdSql.error("select min(c1) == max(c1) from stb1;")
+        tdSql.error("select min(c1) == max(c1) from stb1 group by tbname;")
+        tdSql.error("select min(c1) == min(c1) from stb1;")
+        tdSql.error("select min(c1) == min(c1) from stb1 group by tbname;")
+        tdSql.error("select min(c1) == 1 from stb1;")
+        tdSql.error("select min(c1) == 1 from stb1 group by tbname;")
+       
+
+    def run(self):
+        self.create_stb()
+
+        self.check_issue()
+
+        if self.err_case > 0:
+            tdLog.exit(f"{self.err_case} case run failed")
+        else:
+            tdLog.success("all case run passed")
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())