Fatal error: Uncaught PDOException: SQL执行失败: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'id' in 'field list' SQL: SELECT id, name FROM districts WHERE level = 2 ORDER BY name in D:\web\www\config\MySQLPDO.php:653 Stack trace: #0 D:\web\www\config\MySQLPDO.php(678): MySQLPDO->query('SELECT id, name...', Array) #1 D:\web\www\properties-new.php(115): MySQLPDO->fetchAll('SELECT id, name...') #2 {main} thrown in D:\web\www\config\MySQLPDO.php on line 653