Display Columns having sum/total not zero

Question

We have a report that hav total twenty columns.
Each time we run te report (dynamic query) random columns have sum=zero
we want to display eachtime only the columns having sum greater than zero.
regards
jazib

Answer 1

Hi Jazib,
Ok - I've been testing this here [http://htmldb.oracle.com/pls/otn/f?p=267:43]. The report on the left shows/hides the SAL and COMM columns according to the totals. The report on the right shows the full data. Change the Dept to see this in effect.
There are other methods available, but this is what I have done:
The dept select list (item name is P43_DEPTNO) is just a list of departments and a NULL option that returns 0 (zero).
The report's source is a SQL statement of:
SELECT EMPNO, ENAME, SAL, COMM
FROM EMP
WHERE :P43_DEPTNO = 0 OR :P43_DEPTNO = DEPTNO
ORDER BY ENAMEI have a region in the After Header position that uses "No Template" and contains two Hidden items - P43_SAL and P43_COMM.
I have an Item Computation, running "Before Header", that sets P43_DEPTNO to 0 if it is NULL.
I have an unconditional PL/SQL Process, running "On Load - Before Header", that has the following process code:
DECLARE
vSAL NUMBER;
vCOMM NUMBER;
BEGIN
SELECT NVL(SUM(SAL),0), NVL(SUM(COMM),0)
INTO vSAL, vCOMM
FROM EMP
WHERE :P43_DEPTNO = 0 OR :P43_DEPTNO = DEPTNO;
:P43_SAL := vSAL;
:P43_COMM := vCOMM;
END;And, finally, on the SAL column in the report, I have set the Condition Type to "Value of Item in Expression 1 != Zero" and Expression 1 is: P43_SAL. And the same on the COMM column, but Expression 1 is: P43_COMM
When the page is loaded, the process is run and the totals for SAL and COMM are calculated and inserted into P43_SAL and P43_COMM. The report is then run and the conditions check the values of these two hidden items - if either is non-zero, then the column is displayed.
Andy