Initial value and value in the database

Question

Hello world ,
i want to add initial value with value in the database depend on the date
for example i have initial value for 30/09/2009
i and to all it with value in the database in 31/12/2009
take a look what i did
PROCEDURE pkd_prem IS
cursor gr_pkd_prem is select
SUM(DECODE(mark,'01',FM_mark,TM_mark) A,
SUM(DECODE(FMS,'01',LS,NS) b
from fr_treaty_profile ftp, fr_monthly_summary
where
(ftp.tpr_cgp_id = fr_monthly_summary.fms_cgp_id )
AND (ftp.tpr_cmp_id = fr_monthly_summary.fms_cmp_id )
AND (ftp.tpr_treaty_origin = fr_monthly_summary.fms_treaty_origin )
AND (ftp.tpr_uw_year = fr_monthly_summary.fms_uw_year )
AND (ftp.tpr_class = fr_monthly_summary.fms_class )
AND (ftp.tpr_type = fr_monthly_summary.fms_type )
AND (ftp.tpr_serial = fr_monthly_summary.fms_serial )
AND
(fr_monthly_summary.fms_treaty_origin=:BLK1.EO_ORIGIN) AND
(fr_monthly_summary.fms_uw_year=:BLK1.EO_UW_YEAR) AND
(fr_monthly_summary.fms_class=:BLK1.EO_CLASS) AND
(fr_monthly_summary.fms_treaty_type=:BLK1.EO_TYPE) AND
( fr_monthly_summary.fms_treaty_serial=:BLK1.EO_SERIAL)
AND (FMS_TYPE ='P')
AND FMS_SERIAL = '01'
AND (FMS_OFC_ID !='X')
and (FMS_YEAR =substr(to_char(:BLK1.EO_TRNX_DATE,'DD/MM/YYYY'),7,4))
and (FMS_PERIOD between substr(to_char(:BLK1.EO_TRNX_DATE,'DD/MM/YYYY'),4,2)-2 and substr(to_char(:BLK1.EO_TRNX_DATE,'DD/MM/YYYY'),4,2)) ;
---Initial value
cursor base is select EO_GR_BKD_PREM from FR_EN
where
EO_TREATY_ORIGIN=:BLK1.EO_ORIGIN AND
EO_UW_YEAR=:BLK1.EO_UW_YEAR AND
EO_CLASS=:BLK1.EO_CLASS AND
EO_TREATY_TYPE=:BLK1.EO_TYPE AND
EO_TREATY_SERIAL=:BLK1.EO_SERIAL AND
EO_YEAR=:BLK1.EO_YEAR;
A number(18,3);
B number(18,3);
v_base number(18,3);
BEGIN
open base;
open gr_pkd_prem;
fetch gr_pkd_prem into a,b;
fetch base into v_base;
:BLK1.EO_GR_BKD_PREM :=nvl(a,0)+ nvl(b,0)+ nvl(v_base,0);
close gr_pkd_prem;
close base;
END;
the proceudre is correct and the values come as i want
but here
FMS_PERIOD between substr(to_char(:BLK1.EO_TRNX_DATE,'DD/MM/YYYY'),4,2)-2 and substr(to_char(:BLK1.EO_TRNX_DATE,'DD/MM/YYYY'),4,2))
suppose i will add from 6 to 9
the value will come down to add with base value
but next time i want from 10 to 12
it will add value 10 to 12 with the base for just period 10 to 12
i want to keep adding
if i start from 6 to 9
then shoud be
add the value of 6 to 9 to 10 to 12
but

Answer 1

look ..
i created a form and let's say there is one field called Base ..
and i inert value on that field and saved .
then
i created cursor to fetch value from another table
that value which i fetched from another table must add to past value
take this scenario
i started with value 6
then i fetch by cursor value from 1/1/2010 to 31/3/2010 and that value = 33
first action
6+33
then
i fecth by using cursor from 1/6/2010 to 30/9/2010 and that value = 2
the result of first action must add with the last value which is 2
(6+33) from first action plus(+) 2 and display the result on the secreen