fix:修改gc问题

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/device/TDengineService.java

@@ -1685,18 +1685,17 @@ public class TDengineService {
             return Collections.emptyList();
         }
 
-        List<Object> params = new ArrayList<>();
+        // 优化：分组查询每个设备的最新记录
+        List<DeviceOperationRecordDO> allResults = new ArrayList<>();
+
+        for (Long deviceId : deviceIds) {
             StringBuilder sql = new StringBuilder(
                     "SELECT * FROM besure_server.iot_device_operation_record " +
-                        "WHERE deleted = 0 AND device_id IN ("
+                            "WHERE deleted = 0 AND device_id = ? "
             );
 
-        for (int i = 0; i < deviceIds.size(); i++) {
+            List<Object> params = new ArrayList<>();
-            if (i > 0) sql.append(", ");
+            params.add(deviceId);
-            sql.append("?");
-            params.add(deviceIds.get(i));
-        }
-        sql.append(") ");
 
             if (CollectionUtils.isNotEmpty(ruleCodes)) {
                 sql.append("AND rule IN (");
@@ -1708,13 +1707,14 @@ public class TDengineService {
                 sql.append(") ");
             }
 
-        sql.append("ORDER BY create_time DESC");
+            sql.append("ORDER BY create_time DESC LIMIT 1"); // 每个设备只取最新1条
 
             try {
-            return jdbcTemplate.query(sql.toString(), params.toArray(), (rs, rowNum) -> {
+                List<DeviceOperationRecordDO> deviceResults = jdbcTemplate.query(
+                        sql.toString(),
+                        params.toArray(),
+                        (rs, rowNum) -> {
                             DeviceOperationRecordDO d = new DeviceOperationRecordDO();
-//                d.setTs(rs.getTimestamp("ts") != null ? rs.getTimestamp("ts").toLocalDateTime() : null);
-//                d.setId(rs.getLong("id"));
                             d.setDeviceId(rs.getLong("device_id"));
                             d.setModelId(rs.getLong("model_id"));
                             d.setRule(rs.getString("rule"));
@@ -1729,10 +1729,15 @@ public class TDengineService {
                             return d;
                         });
 
+                allResults.addAll(deviceResults);
+
             } catch (Exception e) {
-            log.error("查询失败", e);
+                log.error("查询设备{}的最新记录失败", deviceId, e);
-            return Collections.emptyList();
             }
+
+        }
+
+        return allResults;
     }
 
     /**