Yeah thats it. Thanks. ..:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:. Bobby Hartsfield http://acoderslife.com
-----Original Message----- From: Andy Matthews [mailto:[EMAIL PROTECTED] Sent: Monday, December 19, 2005 12:50 PM To: CF-Talk Subject: RE: Random Numbers mySQL is SELECT some_column FROM some_table LIMIT 3 ORDER BY RAND() <!----------------//------ andy matthews web developer ICGLink, Inc. [EMAIL PROTECTED] 615.370.1530 x737 --------------//---------> -----Original Message----- From: Bobby Hartsfield [mailto:[EMAIL PROTECTED] Sent: Monday, December 19, 2005 11:33 AM To: CF-Talk Subject: RE: Random Numbers What database are you using? In SQL server you can select the top 3 and order by newid() I'm pretty sure you can do that in MySQL too... I'm just not sure if it's actually 'newid()' in MySQL ----- Else, I can think of a couple different ways to do it.... The simplest way I can think of... Get a list of all the IDS from the table So you'd have a list of IDS like "1,2,3,4,5,6,7,8,9" Then loop from 1 to however many records you want while grabbing a random ID from the list each time and removing it from the list to ensure it doesnt get selected again... <cfset randomids = ""> <cfset numberofrandomrecords = 3> <cfloop from=-"1" to=numberofrandomrecords index="i"> <!--- get a random number in the range of list items ---> <cfset thisposition = randrange(1, listlen(listofids))> <!--- get the id in that position of the list ---> <cfset randomids = listappend(randomids, listgetat(listofids, thisposition))> <!--- delete that list item so its not selected again ---> <cfset listdeleteat(listofids, thisposition)> </cfloop> When its done, #randomids# will hold 3 random ids then you just select * from table where id in (listofids) That's all untested of course and knowing me... there's a typo somwhere... If there are a ton of records and you dont want to grab all the ids everytime... just grab half or something and randomly order them by different columns and/or asc/desc Eg... <cfset columnlist = "ID,fname,lname,bday"> <cfset directionlist = "asc,desc"> <cfset orderby = listgetat(columnlist, randrange(1, listlen(columnlist)))> <cfset orderdirection = listgetat(directionlist, randrange(1, 2)))> <cfquery name="qry" datasource="dsn" maxrows="20"> Select ID from table Orderby #orderby# #orderdirection# </cfquery> ....:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:. Bobby Hartsfield http://acoderslife.com -----Original Message----- From: Stuart Kidd [mailto:[EMAIL PROTECTED] Sent: Monday, December 19, 2005 11:32 AM To: CF-Talk Subject: Random Numbers Hi guys, I'm trying to write an app which will choose three random numbers for a competition based on how many etnries there are. I'm having problems trying to work out a way not to choose the same number twice, is there a way to do that which will fit into my CFLOOP structure? Or is there a better way to do it? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Logware (www.logware.us): a new and convenient web-based time tracking application. Start tracking and documenting hours spent on a project or with a client with Logware today. Try it for free with a 15 day trial account. http://www.houseoffusion.com/banners/view.cfm?bannerid=67 Message: http://www.houseoffusion.com/lists.cfm/link=i:4:227284 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
