Question

好吧，我是MySQL数据库的新手，我遇到了问题，我需要从表中获取最后两组记录（记录每周自动添加到此表中）我需要用来查找实体在上周所做的增长。

任何人都可以帮助PLZ。

这是我写的，我在我的本地主机上测试它并且它有效：D，但是当我们在线安装它时，它崩溃了：（

select pages.*, new.* from (
select id, tableone.page_id, one, two,(two - one) as diff from 
(SELECT id, page_id, likes as two FROM `page_records` WHERE id IN ( SELECT max( id )    FROM `page_records` GROUP BY page_id )) as tableone left join 
(SELECT page_id , likes as one  FROM `page_records` where id in ( SELECT max(id) FROM   `page_records` where id not in (select max(id) from `page_records` group by page_id) group      by page_id))
as tabletwo 
on tableone.page_id = tabletwo.page_id 
order by tableone.page_id asc) as new inner join pages on pages.id = new.page_id

提前致谢。

Answer 1

尝试： SELECT id，page_id，喜欢FROM page_records order by id desc limit 0,2

Answer 2

试试这个：

SELECT * FROM table_name 
ORDER BY id DESC 
LIMIT 0, 2

谢谢！

返回最后两组记录mySQL

2 个答案: