On 29 Sep 2003 at 10:04, Jean-Luc Lachance wrote:
> Wouldn't:
>
> insert into r
> select count(*)
> from users
> where date( lastlogin) > current_date - MaxDays * interval '' 1 day''
> group by date( lastlogin);
>
> be more efficient?
Yes it would, by a factor of 5.
P.S. but it would not show dates for which there are no logins. The
above can return zero rows. The previous example always returns
MaxDays rows.
--
Dan Langille : http://www.langille.org/