SELECT * FROM `board_data` WHERE `board_id`='portfolio' AND `del_flag`='n' AND `real_data`='y' AND `category` LIKE '%solutionpaging=1%' ORDER BY `solutionpaging=1_order_by` ASC, `idx` ASC LIMIT 0, 6 There is an error in the transmitted query. ERROR_CODE 1054 : Unknown column 'solutionpaging=1_order_by' in 'order clause'