SQL语句出错：select Category_en from products_category where UId like '0,361,374,%' order by IsPromotion desc,if(MyOrder>0, MyOrder, if(MyOrder=0, 1000000, 1000001)) asc,CateId asc limit 0, 20<br>错误代码：<i>#1054</i> - Unknown column 'IsPromotion' in 'order clause'