From e12298f814b8f3e1afc44a949d5e38d35aa3a9d8 Mon Sep 17 00:00:00 2001
From: Leo Xu <381899826@qq.com>
Date: Mon, 2 Sep 2024 14:50:25 +0800
Subject: [PATCH] add case by TD-31726

---
 tests/army/query/query_basic.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tests/army/query/query_basic.py b/tests/army/query/query_basic.py
index f700ee3153..a6af026cbf 100644
--- a/tests/army/query/query_basic.py
+++ b/tests/army/query/query_basic.py
@@ -225,6 +225,11 @@ class TDTestCase(TBase):
         sql2 = "select bi from stb where bi is not null order by bi desc limit 10;"
         self.checkSameResult(sql1, sql2)
 
+        # same as by TD-31726
+        sql1 = "select fc as a, voltage dc a from meters limit 5;"
+        sql2 = "select * from (select fc as a, dc as a from meters)t limit 5;"
+        self.checkSameResult(sql1, sql2)
+
         # distributed expect values
         expects = {
             "Block_Rows"     : 6*100000,