Unable to resolve the query

Question

Hi
I have the following table.
Complex No
Complex Amount
Child Invoice
Invoice Amount
Invoice Date
123
9000
245
2000
1-Oct-13
123
456
3000
01-Nov-13
123
567
4000
31-Oct-13
My requirement is to generate the following report
Complex No
Complex Amount
Till Date
Future Date
123
9000
6000
3000
Where Till Date is the sum of Amount of Invoice Dated <= 31-OCT-13 and Future Dated is the sum of amount of invoice dated > 31-OCT-13.
Can anyone help me with the query?

Answer 1

with t as (
           select 123 complex_no,9000 complex_amount,245 child,2000 invoice_amount,date '2013-10-01' invoice_date from dual union all
           select 123,null,456,3000,date '2013-11-01' from dual union all
           select 123,null,567,4000,date '2013-10-31' from dual
select  complex_no,
        sum(complex_amount) complex_amount,
        sum(case when invoice_date <= last_day(sysdate) then invoice_amount end) till_date,
        sum(case when invoice_date > last_day(sysdate) then invoice_amount end) future_date
  from  t
  group by complex_no
COMPLEX_NO COMPLEX_AMOUNT  TILL_DATE FUTURE_DATE
       123           9000       6000        3000
SCOTT@orcl >
SY.