Function returns nothing !!

Question

I ve a SELECT statement that is working perfectly when i execute it alone and if i use the same SQL in a function and try to return the value, its giving me nothing !!. The is code is as below.
create or replace function f_get_comp_os(p_fdt date)
return number
is
p_ret number(10,2);
cursor c1 is
SELECT NVL(SUM((DECODE(PARA_VALUE,PARA_VALUE,DECODE(A.OST_TYPE,'P',A.OST_LC_ORG_AMT,A.OST_LC_AMT),
DECODE(A.OST_TYPE,'P',A.OST_FC_ORG_AMT,A.OST_FC_AMT))- DECODE(PARA_VALUE,PARA_VALUE,SUM(NVL(B.OST_LC_AMT,0)),
SUM(NVL(B.OST_FC_AMT,0)))) * DECODE(A.OST_DRCR_FLAG, 'D',1,-1)),0) BAL_AMT FROM FM_TRANSACTION,
FM_COMPANY,FM_SUPPLIER,FM_CUSTOMER,FM_CURRENCY,FP_PARAMETER,FT_OS B, FT_OS A WHERE A.OST_COMP_CODE = 'EPM'
AND A.OST_MAIN_ACNT_CODE BETWEEN RTRIM('1140101') AND RTRIM('1140101') AND A.OST_DOC_DT <= TO_DATE(P_FDT,'DD/MM/YYYY')
AND (((NVL(A.OST_LAST_MATCH_DT,A.OST_DOC_DT)) > (TO_DATE(P_FDT,'DD/MM/YYYY')) AND NVL(A.OST_TYPE,'Z') = 'P') OR
(TO_NUMBER(NVL(A.OST_LC_AMT,0)) != TO_NUMBER(NVL(A.OST_LC_ADJ_AMT,0))) OR (TO_NUMBER(NVL(A.OST_FC_AMT,0)) != TO_NUMBER(NVL(A.OST_FC_ADJ_AMT,0))))
AND NVL(A.OST_TYPE,'Z') IN ('P','Z') AND B.OST_REF_KEY_NO (+) = A.OST_KEY_NO
AND B.OST_TYPE (+) = 'R' AND B.OST_DOC_DT (+) <= TRUNC(TO_DATE(P_FDT,'DD/MM/YYYY'))
AND PARA_ID = 'BASE.CURR' AND CURR_CODE = PARA_VALUE
AND SUPP_CODE(+) = NVL(A.OST_SUB_ACNT_CODE,'*') AND CUST_CODE(+) = NVL(A.OST_SUB_ACNT_CODE,'*')
AND EXISTS (SELECT 'X' FROM FM_CUSTOMER X WHERE X.CUST_CODE = A.OST_SUB_ACNT_CODE
UNION SELECT 'X' FROM FM_SUPPLIER Y WHERE Y.SUPP_CODE = A.OST_SUB_aCNT_CODE)
AND TRAN_CODE = A.OST_TRAN_CODE AND COMP_CODE = A.OST_COMP_CODE
GROUP BY A.OST_KEY_NO,A.OST_SUB_ACNT_CODE,A.OST_DOC_DT,A.OST_DUE_DT,A.OST_TRAN_CODE,A.OST_DOC_NO,
A.OST_LC_AMT, A.OST_FC_AMT,A.OST_LC_ORG_AMT,A.OST_FC_ORG_AMT,A.OST_TYPE,A.OST_DRCR_FLAG,A.OST_DOC_REF,
PARA_VALUE,A.OST_SM_CODE;
begin
     if c1%isopen then
     close c1;
     end if;     
     open c1;
     fetch c1 into p_ret;
     return p_ret;
end;
Please note that the SELECT statement if i execute in Toad, it is giving me the correct result.Whats wrong in this code ??? Can anyone help me ...

Answer 1

If you could edit your first post to change the subject line to include [SOLVED], that would be helpful.
Once I'd copied your query into a formatting tool it was much easier to read and hence the solution was pretty obvious. Worth remembering to format code - and preserve formatting when posting to the forum by wrapping your code in [code] and [/code] tags as I did in my response.