Complex situation

Question

Hi All
I have the following scenario:
I have two tables DW_PS_AP_PO_RQ_FACT and DW_PS_AP_AP_ALL_PAYMENTS
In the DW_PS_AP_PO_RQ_FACT table i have a PO_AMOUNT AND PO_NUMBER fields and each PO_NUMBER has only one PO_AMOUNT, on the second table DW_PS_AP_AP_ALL_PAYMENTS, i have THREE fields PO_PAYMENT_AMOUNT,PO_NUMBER and INVOICE_DATE, In this table for each PO_NUMBER , they can have more than one PO_PAYMENT_AMOUNT fields associated. I uded the below dql to join these two tables:
SELECT t1.ps_no, t1.amount ytd_po_totals, t1.bud_ref, t1.CLASS district,
t1.contract_info, SUM (t1.ps_qty) ps_qty, t1.original_amount,
SUM (t2.amount) po_payments,
TO_CHAR (ADD_MONTHS (t2.invoice_dt, 6), 'YYYY') invoice_date_fy
FROM dw_ps_ap_po_rq_fact t1, dw_ps_all_payments_fact t2
WHERE t1.ps_no = t2.po_no
AND t1.ps_line = t2.line_no
AND t1.OBJECT IN ('544020', '544095')
AND (t1.contract_info LIKE '%Salt%' OR t1.contract_info LIKE '%SALT%')
GROUP BY t1.ps_no,
t1.amount,
t1.bud_ref,
t1.CLASS,
t1.contract_info,
t1.original_amount,
TO_CHAR (ADD_MONTHS (t2.invoice_dt, 6), 'YYYY')
My problem here is when i'm adding the "PO_PAYMENT_AMOUNT" for each PO_NUMBER from the second table, even the PO_AMOUNT field is getting repeated and in reporting when i have to submit a summary report its get added up, please help me.
Thanks

Answer 1

Hi,
One thing you can do is use the analytic ROW_NUMBER function to identify exactly one row of output for every row from the DW_PS_AP_PO_RQ_FACT table.
You didn't post CREATE TABLE and INSERT statements for your tables, so I'll use scott.emp to illustrate.
The following query shows all the bosses, and the employees who report directly to each boss. (Bosses can be repeated in the output, because several employees may report to the same boss.) The sal_to_add column is NULL except for one output row per boss, so adding that column gives the accurate total.
SELECT     b.empno
,     b.ename
,     b.sal
,     CASE
          WHEN  ROW_NUMBER () OVER ( PARTITION BY  b.empno
                                      ORDER BY        e.ename
                          ) = 1
          THEN  b.sal
     END     AS sal_to_add
,     e.empno
,     e.ename
FROM     scott.emp     b
JOIN     scott.emp     e     ON     e.mgr     = b.empno
;Output:
.    EMPNO ENAME             SAL SAL_TO_ADD      EMPNO ENAME
      7566 JONES            2975       2975       7902 FORD
      7566 JONES            2975                  7788 SCOTT
      7698 BLAKE            2850       2850       7499 ALLEN
      7698 BLAKE            2850                  7900 JAMES
      7698 BLAKE            2850                  7654 MARTIN
      7698 BLAKE            2850                  7844 TURNER
      7698 BLAKE            2850                  7521 WARD
      7782 CLARK            2450       2450       7934 MILLER
      7788 SCOTT            3000       3000       7876 ADAMS
      7839 KING             5000       5000       7698 BLAKE
      7839 KING             5000                  7782 CLARK
      7839 KING             5000                  7566 JONES
      7902 FORD             3000       3000       7369 SMITHI included both the duplicated sal column and the distinct sal_to_add column, just to show how this worked.
In practice, you mighty only want sal_to_add, or you might want to display only sal, but do the SUM on sal_to_add.
By the way, when posting formatted code on this site, type these 6 characters:
(small letters only, inside curly brackets) before and after sections of formatted text, to preserve spacing.
It looks like you're trying, but you're only typing the 1st of those 6 characters before the formatted section, and only the 6th of those 6 characters after it.