CF - Mysql communication problem?

Question

I'm getting this error from a query that works fine when used
directly with MySQL
But under CF it throws an error, and I suppose that is
something that Cf is doing, because if I copy the SQL query thrown
from the error , it still works fine.
==============
Error Executing Database Query.
You have an error in your SQL syntax. Check the manual that
corresponds to your MySQL server version for the right syntax to
use near 'select b.id_article, group_concat( c.name order by c.use
The error occurred in D:\Hosting\flammen\myCFC\article2.cfc:
line 5
Called from D:\Hosting\flammen\article\article2.cfm: line 5
Called from D:\Hosting\flammen\myCFC\article2.cfc: line 5
Called from D:\Hosting\flammen\article\article2.cfm: line 5
3 : <cffunction name="ListArticles" access="remote"
returntype="query">
4 : <cfargument name="dsn" type="string"
required="yes">
5 : <cfquery name="qListArticles" datasource="#dsn#">
6 : select a.id_article, a.title, u.users, t.tags
7 : from articles as a
SQL select a.id_article, a.title, u.users, t.tags from
articles as a left outer join ( select b.id_article, group_concat(
c.name order by c.user separator ', ') as users from articlexuser
as b inner join users as c on c.id_user = b.id_user group by
b.id_article ) as u on u.id_article = a.id_article left outer join
( select d.id_article, group_concat( e.tag order by e.tag separator
', ') as tags from articlextags as d inner join tags as e on
e.id_tag = d.id_tag group by d.id_article ) as t on t.id_article =
a.id_article

Answer 1

add the argument before the </cffunction>
<return qListArticles>