SELECT sys.* FROM `imw_system_list` AS sys 
							LEFT JOIN `imw_content` AS con ON sys.`mod_code` = con.`mod_code` 
							WHERE con.`parent_id` = '0' 
							ORDER BY sys.`sequence` ASC

MySQL 錯誤訊息: Got error 28 from storage engine因為無法正常執行資料庫指令, 系統已中斷執行作業