Comments on: Random database results with ColdFusion http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/ development in a land far far away... Mon, 08 Sep 2008 04:39:15 +0000 http://wordpress.org/?v=abc By: chapter31 » Blog Archive » Returning random results with MySQL http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-43449 chapter31 » Blog Archive » Returning random results with MySQL Fri, 28 Mar 2008 17:01:41 +0000 http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-43449 [...] History is what was written down. « Options for accessing the ColdFusion 8 documentation Random database results with ColdFusion [...] [...] History is what was written down. « Options for accessing the ColdFusion 8 documentation Random database results with ColdFusion [...]

]]> By: Kevin Sargent http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42846 Kevin Sargent Sun, 23 Mar 2008 00:29:49 +0000 http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42846 I'm going to guess that a stored proc would be even better code-wise and speedilicousness-wise. have you tested that? I ask sincerely, because I will be doing a lot of random row queries on a big table soon and wanna know :) I’m going to guess that a stored proc would be even better code-wise and speedilicousness-wise. have you tested that? I ask sincerely, because I will be doing a lot of random row queries on a big table soon and wanna know :)

]]> By: Michael Sharman http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42653 Michael Sharman Fri, 21 Mar 2008 14:30:22 +0000 http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42653 @Tom - Why would you not be able to use an ORDER BY clause? All we're doing is saying "get me all the records which have 'x' as the primary key". You can still use ORDER BY anything you want. Also I'm not quite sure I get your post (in terms of a query). Will that not return a random list of row numbers? How will that help when looping to output a resultset? @Tom - Why would you not be able to use an ORDER BY clause?

All we’re doing is saying “get me all the records which have ‘x’ as the primary key”. You can still use ORDER BY anything you want.

Also I’m not quite sure I get your post (in terms of a query). Will that not return a random list of row numbers? How will that help when looping to output a resultset?

]]> By: Michael Sharman http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42649 Michael Sharman Fri, 21 Mar 2008 14:02:36 +0000 http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42649 @Kris - your comment didn't quite come through. I did say that duplicate records could be returned with randRange(), is that what you meant? @Kris - your comment didn’t quite come through.

I did say that duplicate records could be returned with randRange(), is that what you meant?

]]> By: Tom Mollerus http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42643 Tom Mollerus Fri, 21 Mar 2008 13:10:50 +0000 http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42643 I note that this means you can't use an ORDER BY clause in your SQL statement, which may be quite a disadvantage in some circumstances. If you can loop through the query with a cfloop instead of a cfoutput, you can achieve random results much faster and with only one hit on the database by just looping through a randomized list of query rows: http://www.mollerus.net/tom/blog/2008/03/creating_randomlyordered_lists.html I note that this means you can’t use an ORDER BY clause in your SQL statement, which may be quite a disadvantage in some circumstances. If you can loop through the query with a cfloop instead of a cfoutput, you can achieve random results much faster and with only one hit on the database by just looping through a randomized list of query rows:
http://www.mollerus.net/tom/blog/2008/03/creating_randomlyordered_lists.html

]]> By: Kris Brixon http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42633 Kris Brixon Fri, 21 Mar 2008 12:21:25 +0000 http://www.chapter31.com/2008/03/21/random-database-results-with-coldfusion/#comment-42633 You are open to duplicate rows. Try something like: <code></code> You are open to duplicate rows.
Try something like:

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