Help using AT NEW, AT END OF

Question

Hi experts,
       I am not able to get desired result by using at new and at end of in my report. This is what i have in my internal table ifinal. fields f2 and f3 are don't care.
f1      f2       f3       f4     f5
a       x        x        10    5
a       x        x        20   15
b       x        x        5     10
b       x        x        10    5
Now i want the result as follows:
f1     f2     f3     f4     f5
a       x     x     10      5
a       x     x     20     15
total  x      x     30     20
b       x     x      5      10
b       x     x     10       5
total   x     x     15     15
so grouping values in f1, i need to calculate total for fields f4 and f5.
Someone plz. help soon.
Thanks.
Abhinav.

Answer 1

Please paste your code here and it will be easy to loo upon.
Here is a pseudo logic.
sort itab1.
loop at itab1.
  write:/ f1, f2, f3, f4, f5.
  at end of f1.
    sum.
    write:/ f1, f4, f5.
  endat.
endloop.
Here are some more details with examples. Please check your code accordingly.
SUM.
You can only use this statement within a LOOP. If you use SUM in an AT - ENDAT block, the system calculates totals for the numeric fields of all lines in the current line group and writes them to the corresponding fields in the work area (see example in ). If you use the SUM statement outside an AT - ENDAT block (single entry processing), the system calculates totals for the numeric fields of all lines of the internal table in each loop pass and writes them to the corresponding fields of the work area. It therefore only makes sense to use the SUM statement in AT...ENDAT blocks.
If the table contains a nested table, you cannot use the SUM statement. Neither can you use it if you are using a field symbol instead of a work area in the LOOP statement.
Examples
Example
DATA: BEGIN OF LINE,
         COL1 TYPE C,
         COL2 TYPE I,
         COL3 TYPE I,
      END OF LINE.
DATA ITAB LIKE HASHED TABLE OF LINE
          WITH UNIQUE KEY COL1 COL2.
LINE-COL1 = 'A'.
DO 3 TIMES.
  LINE-COL2 = SY-INDEX.
  LINE-COL3 = SY-INDEX ** 2.
  INSERT LINE INTO TABLE ITAB.
ENDDO.
LINE-COL1 = 'B'.
DO 3 TIMES.
  LINE-COL2 = 2 * SY-INDEX.
  LINE-COL3 = ( 2 * SY-INDEX ) ** 2.
  INSERT LINE INTO TABLE ITAB.
ENDDO.
SORT ITAB.
LOOP AT ITAB INTO LINE.
  WRITE: / LINE-COL1, LINE-COL2, LINE-COL3.
  AT END OF COL1.
    SUM.
    ULINE.
    WRITE: / LINE-COL1, LINE-COL2, LINE-COL3.
    SKIP.
  ENDAT.
  AT LAST.
    SUM.
    ULINE.
    WRITE: / LINE-COL1, LINE-COL2, LINE-COL3.
  ENDAT.
ENDLOOP.
The output is:
A 1 1
A 2 4
A          3          9
A          6         14
B          2          4
B 4 16
B 6 36
B         12         56
        18         70
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