So for simple queries QoQs actually degrade performance? >If your initial "Query" query was very complicated then using QoQ to >extract subsets would probably perform better. > > > >-----Original Message----- >From: Billy Jamme [mailto:[EMAIL PROTECTED] >Sent: Friday, 25 November 2005 4:16 p.m. >To: CF-Talk >Subject: Query of Queries (QoQ) performance question > >Hi all, > >I'm wondering if someone can explain to me how to properly utilize Query >of Queries (QoQ) to gain the maximum amount of performance. > >Here's a code example.. > ><cfquery datasource="test" name="Query"> > Select ID, name > From TempTable ></cfquery> > ><cfset start = GetTickCount()> ><cfloop from="1" to="1000" index="i" > <cfquery dbtype="query" name="QoQ"> > Select ID, Name > From Query > Where id = #i# > </cfquery> ></cfloop> ><cfset end = GetTickCount()> ><cfset final = end - start> >QoQ result -<cfoutput>#final#</cfoutput><br> > ><cfset start = GetTickCount()> ><cfloop from="1" to="1000" index="i" > <cfquery datasource="test" name="QoQ"> > Select ID, Name > From TempTable > Where id = #i# > </cfquery> ></cfloop> ><cfset end = GetTickCount()> ><cfset final = end - start> >Regular - <cfoutput>#final#</cfoutput> > >When I run this I'm getting QoQ times 200-250% greater than the Regular >query. I ran this on two machines, with similar results. > >Both machines were running CFMX 6.1 & MS-SQL 2000. > >I was under the impression that QoQ's were supposed to have better >performance than regular queries. I am doing something wrong? > >--j
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| 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:4:225218 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
