A Database Error Occurred

Error Number: 1054

Unknown column 'marked_price*1000/house_area' in 'order clause'

SELECT * FROM `t_housing` WHERE `issell` = 1 AND `display` >0 AND `uid` = '35' ORDER BY `marked_price*1000/house_area` DESC LIMIT 10

Filename: /www/wwwroot/yzfang/application/shared/models/FangModel.php

Line Number: 253