IdeaJam(tm) feed for Adam Fenstermaker

Domino Designer / : Views - be able to calcuate median - not just average

Thu, 27 Mar 2008 17:36:58 +0000

Author: Adam Fenstermaker
Tags: view
Idea:

Add an option to the view column that would calculate the median value of all of the numbers in the column.

I get this request for median from "the statistics people" a couple times a year. Would be nice to show in a Notes view.

re: Views - be able to calcuate median - not just average

Fri, 09 May 2008 11:47:31 +0000

Author: Applicatie Ontwikkeling
Comment: While we're at it... MIN and MAX maybe?

re: Views - be able to calcuate median - not just average

Fri, 28 Mar 2008 15:39:26 +0000

Author: Craig Wiseman
Comment: ....how 'bout Mode while we're at it....

Mean, Median, & Mode are your friends....

Domino Designer / : Add Discard Index: "Never" Option to View

Wed, 07 Jan 2009 15:15:07 +0000

Author: Adam Fenstermaker
Tags: notesview index
Idea:

Creating a view index from scratch on a very large database (15+ GB) causes enough disk I/O to bring a pretty good-sized server to its knees. It can also cause a database to be very slow/unavailable until the index is built.

The web-based databases we create always seem to have some view that is accessed very infrequently - for example "sales categorized by sales rep then by zip code" - that gets accessed about 1/year - this causes the app to become unavailable until the view index is built (currently the longest view index discard period is 245 days).

I would like to have the option to have these indexes never discarded. Please let me manage my own disk space!

Thanks.

-Adam

re: Add Discard Index: "Never" Option to View

Tue, 13 Jan 2009 21:48:10 +0000

Author: Bill Malchisky
Comment: Adam -- the only reason I can surmise, which I'll admit is conjecture, is that if the index is never discarded, there could be the possibility of introducing corruption to the view itself or possibly the design; otherwise, it is probably a disk-management issue as you indicated.

I know of several tax-based or financial apps that are critical for two months a year, then go dormant the other ten months ... and they are quite large. So, it is possible for them to have a view go unused after that 245 day window.

Two possible work-arounds:
(1) Perhaps, to avoid the situation you mention, setup a program document to run updall -R <view_name> on the 244th day or nearest Friday evening/weekend ...
(2) or just setup a repeating reminder on your team calendar that will cause you to use the view--every 240 days. Then, the view index would remain. Yes, this is sub-optimal, but would help alleviate the problem in the near-term.

Good luck.

re: Add Discard Index: "Never" Option to View

Mon, 19 Jan 2009 21:21:40 +0000

Author: Adam Fenstermaker
Comment: @Bill Thanks for the feedback

Yes - not sure why an view index that wasn't opened by users would be any more likely to corrupt than a frequently used view index.

For workaround - I didn't think "-R" "resets" the discard index counter. (I thought this only happened with user access/@DBlookup/@DBcolumn - but may be wrong) . I know it won't do anything to a view that already has dropped its index.

I do know that a scheduled "updall -C" would keep all view indexes in the db built w/o having to specify db name. (and potentially chew up disk)

re: Views - be able to calcuate median - not just average

Fri, 05 Aug 2011 09:28:56 +0000

Author: Zoltan Szabo
Comment: ...simply add more statistical functions and ability to use a @Formula