3065 - Expression #1 of ORDER BY clause is not in SELECT list, references column 'soporte_aliendata.p.products_date_added' which is not in SELECT list; this is incompatible with DISTINCT
select distinct p.products_id, p.products_image, p.products_tax_class_id, pd.products_name, if(s.status, s.specials_new_products_price, p.products_price) as products_price from products p left join specials s on p.products_id = s.products_id, products_description pd, products_to_categories p2c, categories c where p.products_id = p2c.products_id and p2c.categories_id = c.categories_id and c.parent_id = '639' and p.products_status = '1' and p.products_id = pd.products_id and pd.language_id = '3' order by p.products_date_added desc limit 30
