| From: | Mark Morgan Lloyd <markMLl(dot)pgsql-general(at)telemetry(dot)co(dot)uk> |
|---|---|
| To: | pgsql-general(at)PostgreSQL(dot)org |
| Subject: | Re: Numbering rows |
| Date: | 2008-10-16 09:00:37 |
| Message-ID: | gd6vrm$np1$1@pye-srv-01.telemetry.co.uk |
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| Lists: | pgsql-general |
David Rowley wrote:
> It's not 100% certain that it will be possible for 8.4, probably though.
>
> select row_number() over (order by employeeid) as nrow,* from employee order
> by employeeid
That makes sense, thanks. So extracting rate-of-change etc. would be a
join on two subselects followed by a bit of maths, that's likely to be a
big incentive for an upgrade when it comes out.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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