修改超级表

iot-platform/src/main/java/com/iot/platform/service/TdEngineService.java

@@ -196,7 +196,7 @@ public class TdEngineService {
 
             // 创建超级表：固定 ts + surfacename，无 ext_data 列
             String stableSql = String.format(
-                    "CREATE STABLE IF NOT EXISTS %s.%s (ts TIMESTAMP, surfacename VARCHAR(64)) TAGS (location BINARY(64))",
+                    "CREATE STABLE IF NOT EXISTS %s.%s (ts TIMESTAMP, surfacename VARCHAR(64)) TAGS (location VARCHAR(255))",
                     wrapName(dbName),
                     wrapName(superTableName)
             );