MySQL 的 RowNum 实现

在网上找了再三，通过比较，确认了以下的方法是可行的 ：

SELECT @rownum:=@rownum+1 rownum, CollectSn From
(SELECT @rownum:=0,bbgmain.* FROM qbdb.bbgmain WHERE collectsn!=‘‘ ORDER BY collectsn limit 10) t

按照点击数排序，查询new表里的文章排名

select * from (
    select @rank:=@rank+1 as rank, id, title from (select @rank:=0, news.* from news order by dian_num desc) rank) 
news_rank where id = 4;