From ac61c3c384112fbd1174216d96ed9dafaff2cb86 Mon Sep 17 00:00:00 2001
From: HuangHuiKang <HuangHuiKang@qq.com>
Date: Fri, 13 Mar 2026 11:00:40 +0800
Subject: [PATCH] =?UTF-8?q?fix:=E4=BF=AE=E6=94=B9=E6=9F=A5=E8=AF=A2?=
 =?UTF-8?q?=E6=9D=A1=E6=95=B0=E9=99=90=E5=88=B6?=
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---
 .../yudao/module/iot/service/device/TDengineService.java   | 7 +++++--
 1 file changed, 5 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 4e8f5bc43..143c59fec 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
@@ -1167,7 +1167,7 @@ public class TDengineService {
         }
 
         // 默认限制条数（防止全表扫描）
-        int safeLimit = limit == null ? 100 : limit;
+//        int safeLimit = limit == null ? 100 : limit;
 
         String tableName = "besure_server.d_" + deviceId;
 
@@ -1182,7 +1182,10 @@ public class TDengineService {
         }
 
         sqlBuilder.append(" ORDER BY ts DESC "); // 按时间倒序
-        sqlBuilder.append(" LIMIT ").append(safeLimit); // 限制条数
+
+        if(limit !=null ){
+            sqlBuilder.append(" LIMIT ").append(limit); // 限制条数
+        }
 
         String sql = sqlBuilder.toString();