Query working in sql but not in forms

Question

hi this is my query
insert into sa_prod_temp
select sa_idno,sa_srno_desc,count(*) qty from sa_master,
          select sa_code,sa_idno,sa_prod_date,sa_srno,sa_srno1 from
               select sa_code,sa_idno,sa_prod_date,sa_srno,sa_srno1 from bom_sa_prod
               order by sa_prod_date desc
          where rownum <=50
     ) b
     where sa_type = :dummy.sa_code and sa_type = sa_code
     and sa_master.sa_srno = b.sa_idno
     group by sa_idno,sa_srno_desc     ;

Answer 1

insert into sa_prod_temp
select sa_idno,sa_srno_desc,count(*) qty from sa_master,
select sa_code,sa_idno,sa_prod_date,sa_srno,sa_srno1 from
select sa_code,sa_idno,sa_prod_date,sa_srno,sa_srno1 from bom_sa_prod
order by sa_prod_date desc
where rownum <=50
) b
where sa_type = :dummy.sa_code and sa_type = sa_code
and sa_master.sa_srno = b.sa_idno
group by sa_idno,sa_srno_desc ;
VALUE CLASS IS MISSING
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