Query Loop Error

Question

Hi,
I am facing a weird PL/SOL code error. the code below takes user parameters for the exp_start_date and exp_end_date. Based on the exp_start_date that the user enters we need to find the results for the 1st and 15th of every month between the exp_start_date and exp_end_date.
The user can enter only 1st or 15th of the month as the start date or end date:
e.g if user enters start date : 01/01/2011
end date : 03/01/2011
we need to compute results for
01/01/2011
01/15/2011
02/01/2011
02/15/2011
03/01/2011
The problem that I face is iterating through the loop when I write code to obtain next 1st or 15th date from my current date ...it goes into infinite loop.
the error code :
**select days into v_exp_start_dt from(**
**select to_date(v_exp_start_dt, 'dd-Mon-yyyy') + rownum as days**
**from dual**
**connect by level <= TO_DATE (v_exp_start_dt+25, 'DD-MON-YYYY') - to_date(v_exp_start_dt, 'dd-Mon-yyyy'))**
**WHERE TO_CHAR (days, 'dd') IN (1, 15)**
**---and rownum=1;**
**end loop;**
**end;**
I should be able to return the value of v_exp_start_dt to my initial loop so that it calculates other variables.
declare
start_date varchar2(15):='2010-01-01';
end_date varchar2(15):='2010-01-02';
v_start_date date := to_date(start_date,'yyyy/mm/dd');
v_end_date date := to_date(end_date,'yyyy/mm/dd');
exp_start_date varchar2(15):='2010-12-01';
exp_end_date varchar2(15) :='2012-01-01';
v_exp_start_dt date := to_date(exp_start_date,'yyyy/mm/dd');
v_exp_end_dt date := to_date(exp_end_date,'yyyy/mm/dd');
v_tmp integer;
v_asscont integer;
v_prvprimcnt integer;
v_prvassoccnt integer;
begin
while v_exp_start_dt <= v_exp_end_dt loop
select nvl(sum(dc.daily_count),0) into v_tmp
from  daily_counts_summary dc, branch br, division div
where dc.branch_ky = br.branch_ky
and   br.division_ky = div.division_ky
and   dc.expiration_dt = v_exp_start_dt
and   dc.commission_cd = 'R'
and   dc.member_type_cd = 'P'
and  v_exp_start_dt between v_exp_start_dt  and v_exp_end_dt
and   dc.transaction_dt between v_start_date and v_end_date;
select nvl(sum(dc.daily_count),0) into v_asscont
from daily_counts_summary dc, branch br, division div
where dc.branch_ky = br.branch_ky
and   br.division_ky = div.division_ky
  and   dc.expiration_dt = v_exp_start_dt
and   dc.commission_cd = 'R'
and   dc.member_type_cd = 'A'
and   dc.transaction_dt between v_start_date and v_end_date;
select nvl(sum(dc.daily_count),0) into v_prvprimcnt 
from daily_counts_summary dc, branch br, division div
where dc.branch_ky = br.branch_ky
and   br.division_ky = div.division_ky
and   dc.expiration_dt = add_months(v_exp_start_dt,-12)
and   dc.commission_cd = 'R'
and   dc.member_type_cd = 'P'
and    dc.transaction_dt between add_months(v_start_date,-12) and add_months(v_end_date,-12);
select nvl(sum(dc.daily_count),0) into v_prvassoccnt 
from daily_counts_summary dc, branch br, division div
where dc.branch_ky = br.branch_ky
and   br.division_ky = div.division_ky
and   dc.expiration_dt = add_months(v_exp_start_dt,-12)
and   dc.commission_cd = 'R'
and   dc.member_type_cd = 'A'
and    dc.transaction_dt between add_months(v_start_date,-12) and add_months(v_end_date,-12);
DBMS_OUTPUT.PUT_LINE(v_exp_start_dt||' ' || v_tmp || ' ' || add_months(v_exp_start_dt,-12)|| ' ' || v_prvprimcnt || ' '|| v_prvassoccnt);         
**select days into v_exp_start_dt from(**         
**select to_date(v_exp_start_dt, 'dd-Mon-yyyy') + rownum as days**
**from dual**
**connect by level <= TO_DATE (v_exp_start_dt+25, 'DD-MON-YYYY') -  to_date(v_exp_start_dt, 'dd-Mon-yyyy'))**
**WHERE  TO_CHAR (days, 'dd') IN (1, 15)**
**---and rownum=1;**
**end loop;**
**end;**Infinite Output :
01-DEC-10 154 01-DEC-09 267 192
15-DEC-10 0 15-DEC-09 0 0
01-JAN-11 0 01-JAN-10 0 0
15-JAN-11 0 15-JAN-10 0 0
01-FEB-11 0 01-FEB-10 0 0
15-FEB-11 0 15-FEB-10 0 0
01-MAR-11 0 01-MAR-10 0 0
15-MAR-11 0 15-MAR-10 0 0
01-APR-11 0 01-APR-10 0 0
15-APR-11 0 15-APR-10 0 0
the error code :
**select days into v_exp_start_dt from(**
**select to_date(v_exp_start_dt, 'dd-Mon-yyyy') + rownum as days**
**from dual**
**connect by level <= TO_DATE (v_exp_start_dt+25, 'DD-MON-YYYY') - to_date(v_exp_start_dt, 'dd-Mon-yyyy'))**
**WHERE TO_CHAR (days, 'dd') IN (1, 15)**
**---and rownum=1;**
**end loop;**
**end;**
Please advice
Thanks,

Answer 1

Hi,
I have tried using the cursors and now I do get the results back as I wanted. But then I get errors with the dates entered for the start_date varchar2(15):='2010/01/01'; and end_date varchar2(15):='2010/12/01';
declare
start_date varchar2(15):='2010/01/01';
end_date varchar2(15):='2010/12/01';
v_start_date date := to_date(start_date,'yyyy/mm/dd');
v_end_date date := to_date(end_date,'yyyy/mm/dd');
exp_start_date varchar2(15):='2010-12-01';
exp_end_date varchar2(15) :='2011-12-01';
v_exp_start_dt date := to_date(exp_start_date,'yyyy/mm/dd');
v_exp_end_dt date := to_date(exp_end_date,'yyyy/mm/dd');
v_tmp integer;
--v_test integer;
CURSOR c1 IS select days  from(         
select to_date(v_exp_start_dt-10, 'dd-Mon-yyyy') + rownum as days
from dual
connect by level <= TO_DATE (v_exp_end_dt, 'DD-MON-YYYY') -  to_date(v_exp_start_dt-10, 'dd-Mon-yyyy'))
WHERE  TO_CHAR (days, 'dd') IN (1, 15);
begin
--while v_exp_start_dt <= v_exp_end_dt loop
FOR item IN c1 loop
select nvl(sum(dc.daily_count),0) into v_tmp
from daily_counts_summary dc, branch br, division div
where dc.branch_ky = br.branch_ky
and   br.division_ky = div.division_ky
and   to_date(dc.expiration_dt,'dd-Mon-yyyy') = to_date(item.days,'dd-Mon-yyyy')
and   dc.commission_cd = 'R'
and   dc.member_type_cd = 'P'
and   dc.transaction_dt between v_start_date and v_end_date;
DBMS_OUTPUT.PUT_LINE(item.days||' ' || v_tmp);                  
end loop;
end;The problem is with the start_date varchar2(15):='2010/01/01' and end_date varchar2(15):='2010/12/01';
I keep getting the error :ORA-01841 : full year must be between -4713 and +9999 and not be 0..Illegal year entered....
the transaction_dt to which we make join is in the format : DD-Mon-YY
I tired changing and applying the different date format to both transaction_dt and v_start_date date but does not work...or may be is it because of some other condition....Please advice.
The code works fine when I enter start_date varchar2(15):='2010/01/01' and end_date varchar2(15):='2010/01/12';...but when I try to change the year part or month part it throws the error as described above..
Thanks,