SRW.GH_CREATE

Question

Hi ALL,
can anyone please tell me how to use the SRW.GH_CREATE function, within the reports and where we can use them , as I have used them in the formula column and it gave me an error, saying it can't be used in formula columns and i tried the same code as a seperate local program unit and called it from the formula column which thrown the same error: can anyone please hint me where we can make use of this built in function .
the code I wrote which already exists in the reports builder tool examples:
FUNCTION group_cursor RETURN varchar2 IS
gc_dept SRW.GROUP_HANDLE;
gc_emp SRW.GROUP_HANDLE;
l_check_char VARCHAR2(32676);
l_val_char VARCHAR2(20);
l_val_date DATE;
l_val_number NUMBER(9);
BEGIN
--Create cursor on master group
gc_dept := SRW.GH_CREATE('g_dept');
--Create cursor on child group for each record of master group
gc_emp := SRW.GH_CREATE(gc_dept,'g_emp');
LOOP
BEGIN
SRW.GH_NEXT(gc_dept);
SRW.GH_GET_VALUE(gc_dept,'deptno',l_val_number);
--CHR(10) is the enter key to give line break for proper formatting
l_check_char := l_check_char||'Department:'||TO_CHAR(l_val_number)||CHR(10);
LOOP
BEGIN
SRW.GH_NEXT(gc_emp);
SRW.GH_GET_VALUE(gc_emp,'ename',l_val_char);
SRW.GH_GET_VALUE(gc_emp,'hiredate',l_val_date);
--RPADing is done for proper formatting
l_val_char := RPAD(l_val_char,15);
l_check_char := l_check_char||l_val_char||l_val_date||CHR(10);
EXCEPTION
WHEN SRW.NO_DATA_FOUND THEN
EXIT;
END;
END LOOP;
EXCEPTION
WHEN SRW.NO_DATA_FOUND THEN
EXIT;
END;
END LOOP;
RETURN l_check_char;
END;
Regards,
IQ

Answer 1

You can use summary columns. These are created in the group above the one that you are summarizing. So you won't get the error message about referencing at the wrong frequency