postgresql7.1 select '$from' as from_addr, '$sender_first_names' as sender_first_names, '$sender_last_name' as sender_last_name, parties.email, CASE WHEN acs_objects.object_type = 'user' THEN (select first_names from persons where person_id = parties.party_id) WHEN acs_objects.object_type = 'group' THEN (select group_name from groups where group_id = parties.party_id) WHEN acs_objects.object_type = 'rel_segment' THEN (select segment_name from rel_segments where segment_id = parties.party_id) ELSE '' END as first_names, CASE WHEN acs_objects.object_type = 'user' THEN (select last_name from persons where person_id = parties.party_id) ELSE '' END as last_name, '$safe_community_name' as community_name, '$community_url' as community_url from party_approved_member_map, parties, acs_objects where party_approved_member_map.party_id = $segment_id and party_approved_member_map.member_id <> $segment_id and party_approved_member_map.member_id = parties.party_id and parties.party_id = acs_objects.object_id and parties.party_id in (select acs_rels.object_id_two from acs_rels, membership_rels where acs_rels.object_id_one = acs__magic_object_id('registered_users') and acs_rels.rel_id = membership_rels.rel_id and membership_rels.member_state = 'approved') $extra_where_clause