ลองดูครับ
select p.person_id, concat(p.pname,p.fname," ",p.lname) as person_name, pas.anc_service_date
from person_anc_service pas
join person_anc pa on pa.person_anc_id=pas.person_anc_id
join person p on p.person_id=pa.person_id
join vn_stat v on v.vn=pas.vn
where pas.anc_service_date between "2012-10-01" and "2012-10-31"
and v.count_in_year=0