Dynamic Query of Query

<cffunction name="OuterJoin" output="no" returntype="query">
    <cfargument name="QueryA" type="query" required="yes" />
    <cfargument name="QueryB" type="query" required="yes" />
    <cfargument name="joinColumn" type="string" required="yes" />

    <!-- QoQ doesn't like scoped queries --->
    <cfset var Query1 = Arguments.QueryA />
    <cfset var Query2 = Arguments.QueryB />
    <cfset var JoinQuery = '' />
    <cfset var Result = '' />
    <cfset var IgnoreIDs = '' />

    <cfquery dbtype="query" name="joinQuery">
    SELECT *
    FROM Query2
    WHERE Query2.#Arguments.JoinColumn# = <cfqueryparam value="-1" />
    </cfquery>

    <cfset QueryAddRow( joinQuery ) />

    <!--- Value List doesn't like dynamic things --->
    <cfset IgnoreIDs = '' />
    <cfloop query="Arguments.QueryB">
        <cfset IgnoreIDs = ListAppend( IgnoreIDs, Query2[ Arguments.JoinColumn][ Query2.CurrentRow ] ) />
    </cfloop>

    <cfquery dbtype="query" name="Local.Result">
    SELECT *
    FROM Query1, Query2
    WHERE Query1.#Arguments.JoinColumn# = Query2.#Arguments.JoinColumn#

    UNION

    SELECT Query1.*, JoinQuery.*
    FROM Query1, JoinQuery
    WHERE Query1.#Arguments.JoinColumn# NOT IN (<cfqueryparam value="#IgnoreIDs#" list="yes" />)
    </cfquery>

    <cfreturn Result />
</cffunction>