Go homepage(回首页)
Upload pictures (上传图片)
Write articles (发文字帖)

The author:(作者)归海一刀
published in(发表于) 2014/2/1 0:10:11
Sql,server,2005带来的分页便利_[SQL,Server教程]

Sql server 2005带来的分页便利_[SQL Server教程]

select threadid from
(
select threadid, ROW_NUMBER() OVER (order by stickydate) as Pos from cs_threads
) as T
where T.Pos > 100000 and T.Pos < 100030


===========================================


如果里面的这个表cs_threads数据量超大,比如,几亿条记录,那这个方法应该是有问题的


因为,select threadid from
(
select threadid, ROW_NUMBER() OVER (order by stickydate) as Pos from cs_threads
) as T
where T.Pos > 100000 and T.Pos < 100030
这个语句是把select threadid, ROW_NUMBER() OVER (order by stickydate) as Pos from cs_threads它全部取出来,然后在SQL的外面进行分页的,没在SQL2005上测试过,因为原先在ORACLE上这样的写法是不好的,ORACLE中这样写比较好:select threadid from
(
select threadid, ROW_NUMBER() OVER (order by stickydate) as Pos from cs_threads a where a.pos<100030
) as T
where T.Pos > 100000


出处:blog.joycode.com/dotey/archive/2006/01/16/70493.aspx







If you have any requirements, please contact webmaster。(如果有什么要求,请联系站长)





QQ:154298438
QQ:417480759