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/ ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
