started work on ticket 7, re #7

classes/TandemMatching.class.php

@@ -95,13 +95,14 @@ class TandemMatching
             // )
 
             $sql .= "AND tandem_profiles.id NOT IN (
-                SELECT request_profile_id FROM tandem_pairs WHERE request_profile_id = :profile_id OR offer_profile_id = :profile_id
+                SELECT request_profile_id AS id FROM tandem_pairs WHERE request_profile_id = :profile_id OR offer_profile_id = :profile_id
                 UNION
-                SELECT offer_profile_id FROM tandem_pairs WHERE offer_profile_id = :profile_id OR request_profile_id = :profile_id
+                SELECT offer_profile_id AS id FROM tandem_pairs WHERE offer_profile_id = :profile_id OR request_profile_id = :profile_id
                 UNION
-                SELECT request_profile_id FROM tandem_pairs WHERE status = '1'
+                SELECT request_profile_id AS id FROM tandem_pairs WHERE status = '1'
                 UNION
-                SELECT offer_profile_id FROM tandem_pairs WHERE status = '1'
+                SELECT offer_profile_id AS id FROM tandem_pairs WHERE status = '1'
+                GROUP BY id
             ) ";
         }