How to fetch n records at a time from a FM and then fetch next n records

Question

I have a report program which is calling a function module . This function module returns all the records from a table. As the table has millions of records, it cant be returned at a time. How can we return N records from a function module and then return Next n records .The Function module and the report program are in different system .
Thanks in Advance.

Answer 1

Use open cursor and fetch cursor.
Check the program as in SAP Help.
DATA: BEGIN OF count_line,
        carrid TYPE spfli-carrid,
        count  TYPE i,
      END OF count_line,
      spfli_tab TYPE TABLE OF spfli.
DATA: dbcur1 TYPE cursor,
      dbcur2 TYPE cursor.
OPEN CURSOR dbcur1 FOR
  SELECT carrid count(*) AS count
         FROM spfli
         GROUP BY carrid
         ORDER BY carrid.
OPEN CURSOR dbcur2 FOR
  SELECT *
         FROM spfli
         ORDER BY carrid.
DO.
  FETCH NEXT CURSOR dbcur1 INTO count_line.
  IF sy-subrc <> 0.
    EXIT.
  ENDIF.
  FETCH NEXT CURSOR dbcur2
    INTO TABLE spfli_tab PACKAGE SIZE count_line-count.
ENDDO.
CLOSE CURSOR: dbcur1,
              dbcur2.
Regards
Kannaiah