Re: Idempotence and "Replication Insensitivity" are equivalent ?
From: <pamelafluente_at_libero.it>
Date: 18 Sep 2006 23:56:24 -0700
Message-ID: <1158648984.159348.258300_at_i3g2000cwc.googlegroups.com>
Date: 18 Sep 2006 23:56:24 -0700
Message-ID: <1158648984.159348.258300_at_i3g2000cwc.googlegroups.com>
Chris Smith ha scritto:
> For example, AVG is an aggregate function because it is defined by
consider also these "aggregate" functions:
> SUM(P) / COUNT(P), where SUM and COUNT can be defined as primitive
> aggregate functions... but there is no function g that generates AVG
> directly.
- range of values (difference between max and min)
- median
- Any quantile
- standard deviation
- variance
- regression coefficient
- Pearson's skewness
- ...
- Any quantile
-P
> It's late. I'll think more about this tomorrow.
>
> --
> Chris Smith
Received on Tue Sep 19 2006 - 08:56:24 CEST