$sql='SELECT a.id,a.order_id,a.goods_id,a.name,a.cover,a.number,a.total_price,a.price,a.content,a.qr_code,a.company_name,b.id,b.unit FROM '.tablename('longbing_company_shop_order_item').' a LEFT JOIN '.tablename('longbing_company_goods').(' b ON a.goods_id = b.id WHERE a.order_id = '.$v['id'].' && a.uniacid = '.$uniacid);