Add test cases for TS-4348 and TD-27939

tests/system-test/2-query/ts-4348-td-27939.py

@@ -0,0 +1,46 @@
+from util.cases import *
+from util.sql import *
+
+class TDTestCase:
+    def init(self, conn, logSql, replicaVar=1):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), True)
+
+        tdSql.execute("drop database if exists ts_4338;")
+        tdSql.execute("create database ts_4338;")
+        tdSql.execute("drop table if exists ts_4338.t;")
+        tdSql.execute("create database if not exists ts_4338;")
+        tdSql.execute("create table ts_4338.t (ts timestamp, i8 tinyint);")
+        tdSql.execute("insert into ts_4338.t (ts, i8) values (now(), 1) (now()+1s, 2);")
+
+    def run(self):
+        # TS-4348
+        tdSql.query(f'select i8 from ts_4338.t;')
+        tdSql.checkRows(2)
+
+        tdSql.query(f'select i8 from ts_4338.t where 1 = 1;')
+        tdSql.checkRows(2)
+
+        tdSql.query(f'select i8 from ts_4338.t where i8 = 1;')
+        tdSql.checkRows(1)
+
+        tdSql.query(f'select * from (select * from ts_4338.t where i8 = 3);')
+        tdSql.checkRows(0)
+
+        # TD-27939
+        tdSql.query(f'select * from (select * from ts_4338.t where 1 = 100);')
+        tdSql.checkRows(0)
+
+        tdSql.query(f'select * from (select * from (select * from ts_4338.t where 1 = 200));')
+        tdSql.checkRows(0)
+
+        tdSql.execute("drop database if exists ts_4338;")
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success(f"{__file__} successfully executed")
+
+
+
+tdCases.addLinux(__file__, TDTestCase())
+tdCases.addWindows(__file__, TDTestCase())