Can you resort a CFQUERY Result

Question

Is it possible to resort a CFquery result without hitting the
DB again?
Already the DB has about 12 million records. I am storing the
output into a session var and passing through other pages. The
problem is when the user wants to resort the output by price, state
or any thing else. I am trying to find a way to resort the Query
without hitting the DB again. Caching is out of the way

Answer 1

You say you are storing the query results in a Session
variable? Give this a try:
<!--- convert session variable to local variable in
<cflock> to ensure the integrity of shared data --->
<cflock timeout="5" type="READONLY" scope="SESSION">
<cfset Variables.QueryResults =
Duplicate(Session.QueryResults)>
</cflock>
<!--- default sorting variables --->
<cfparam name="SortColumn" default="ColumnOne">
<cfparam name="SortOrder" default="ASC">
<!--- validate the sort column is a column in the query
object since users can alter it in the URL during a sort --->
<cfif NOT
ListFindNoCase(Variables.QueryResults.ColumnList, SortColumn)>
<p>The column you wish to sort by:
<cfoutput>#SortColumn#</cfoutput> is invalid in the
query result set.</p>
<cfabort>
</cfif>
<!--- validate the sort order is a valid sort type --->
<cfif NOT ListFindNoCase("ASC,DESC", SortOrder)>
<p>The order you wish to sort by:
<cfoutput>#SortOrder#</cfoutput> is invalid.</p>
<cfabort>
</cfif>
<!--- query of a query example (dbtype="query"), using our
sort params --->
<cfquery name="SortedQueryResults" dbtype="query">
SELECT ColumnOne, ColumnTwo, ColumnThree
FROM Variables.QueryResults
ORDER BY #SortColumn# #SortOrder#
</cfquery>
<!--- form for sorting --->
<form
action="<cfoutput>#CGI.ScriptName#</cfoutput>"
method="get">
Sort by:
<select name="SortColumn">
<cfloop index="i"
list="#SortedQueryResults.ColumnList#">
<cfoutput><option value="#i#" <cfif SortColumn
EQ
i>selected="true"</cfif>>#i#</option></cfoutput>
</cfloop>
</select>
<select name="SortOrder">
<option value="ASC" <cfif SortOrder EQ
"ASC">selected="true"</cfif>>ASC</option>
<option value="DESC" <cfif SortOrder EQ
"DESC">selected="true"</cfif>>DESC</option>
</select>
<input type="submit" value="Sort">
</form>