摘要: select p1.product_id, ifnull(p2.new_price,10) as price from ( select distinct product_id from Products ) p1 left join ( select product_id, new_price f 阅读全文
posted @ 2023-05-15 17:56 Carl_ZhangJH 阅读(17) 评论(0) 推荐(0)