php - 为什么 Mysql order by 不适用于此查询

Question

我有这个查询:

SELECT *    
FROM ( 
  SELECT p.id, product, unique_name, price, old_price, category_id, added_date    
  FROM products p, products_to_categories ptc, products_to_adverts pta 
  WHERE p.id=ptc.product_id AND (expire_date > now() OR expire_date=0) 
    AND p.id=pta.product_id AND p.active=1 AND p.instock=1 AND p.top_product="1" 
    and p.id not in (58,59,70,88,92,106,107,108,109) 
    and pta.advert_id not in (1,4,5,6,7,9,13,15,17) 
    ORDER BY added_date DESC
) as t GROUP BY id LIMIT 0,32    

added_date 字段是日期时间

谢谢!

Answer 1

您不能在子查询中使用 order by。尝试使用临时表。