From 50081338d9a4dc043ac738b28e1aafb55896d66e Mon Sep 17 00:00:00 2001
From: HuangHuiKang <HuangHuiKang@qq.com>
Date: Tue, 3 Feb 2026 11:02:11 +0800
Subject: [PATCH] =?UTF-8?q?fix=EF=BC=9Atdengine=E9=97=AE=E9=A2=98?=
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---
 .../yudao/module/iot/service/device/TDengineService.java      | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/device/TDengineService.java b/yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/device/TDengineService.java
index e10c3fbf45..5f05f7ba92 100644
--- a/yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/device/TDengineService.java
+++ b/yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/device/TDengineService.java
@@ -80,8 +80,8 @@ public class TDengineService {
     public Map<String, Object> getLatestDeviceData(Long id) {
         String tableName = "d_" + id;
 
-        // 修改SQL：对每个列单独使用last_row函数并指定别名
-        String sql = "SELECT last_row(ts) as ts, last_row(query_data) as query_data FROM besure." + tableName;
+        String sql = "SELECT ts, query_data FROM besure." + tableName +
+                " ORDER BY ts DESC LIMIT 1";
 
         try {
             return jdbcTemplate.queryForObject(sql, new RowMapper<Map<String, Object>>() {