DB ERROR Mysql_Query : select * from morning_goods_table where ( substring(goods_category,1,2) = '01' or substring(goods_mcategory1,1,2) = '01' or substring(goods_mcategory2,1,2) = '01' or substring(goods_mcategory3,1,2) = '01' or substring(goods_mcategory4,1,2) = '01' or substring(goods_mcategory5,1,2) = '01' ) and goods_class = '0' and approval_date > '0' order by goods_sale_stock desc limit 0, 5 Mysql_Error : Sort aborted Mysql Error Num : 1028