Re: creating "a perfect sequence" column

On Mon, Jul 7, 2008 at 4:54 AM, Jack Brown <zidibik(at)yahoo(dot)com> wrote:

> Richard Broersma escreveu:
>> in the mean time i did some research for other rdbms and i guess, what i was looking for was more along the lines of e.g. the row_number() function of mssql [1]. fwiw this seems like the most efficient pagination solution, assuming, of course, the rdbms implements this functionality efficiently.
>>
>> [1]: http://www.davidhayden.com/blog/dave/archive/2005/12/30/2652.aspx
>>
>
> actually, this functionality is most commonly implemented in a
> reporting utility. But it can be done using SQL.
>

Sure, there is a rownum() implementation from depesz [1] that works nice
for reports.

[1]
http://www.depesz.com/index.php/2007/08/17/rownum-anyone-cumulative-sum-in-one-query/

--

André Volpato