REGARDIN PERFORMANCE OF THE REPORT

Question

hi experts,
i have a report which shows item wise purchase ledger based on the
selection of plant and material type and GR dates (from date and to date).
for getting data tables used r (ekbe,ekko,rbkp,rseg,mara,makt) ,problem is it is taking very long time to respond
even if i select 2days gr dates(such vast amnt of data exists in db tables) , my reqiurement is i have to change the report
or i have to write a new one , i have changed  the report,removed all joins and into coreesponding fields and *select ** and
select with in the loops ,  but still the report is taking very long time to respond.
can anybody pls suggest me the efficient way of data retrieving and if i go new report from where should i start.
thanks & regards
maheshlap

Answer 1

Please find below few of suggested changes.
1. Inplace of '=' use 'EQ'.
2. put check of ITEKBE[] is not initlal otherwise it will bring whole database into internal.
3. Read with binary search make sure table is sorted beforeloop.
4. no sory inside loop
5. no corresponding fields
6. Try not to use table with headerline
SELECT EKBE~EBELN EKBE~EBELP EKBE~BELNR --> Try to break it into two tables.
EKBE~BUDAT EKBE~BWART EKBE~MENGE EKBE~LFBNR
EKBE~MATNR EKBE~XBLN  EKBE~LSMEH  MARA~MEINS
MARA~MTART EKBE~WERKS FROM EKBE  INNER JOIN MARA
ON MARA~MATNR = EKBE~MATNR
INTO TABLE ITEKBE WHERE EKBE~BUDAT
IN S_B
UDAT AND MARA~MTART IN S_MTART AND EKBE~MATNR
   IN S_MATNR AND EKBE~WERKS IN S_WERKS AND EKBE~VGABE EQ '1' AND BWART EQ '101
   AND ( EKBE~LFBNR eq EKBE~BELNR ). "OR  EKBE~LFBNR eq ' ' ).
  IF ITEKBE[] IS not INITIAL.-->shold be not initial else it will bring whole database in itekko
    SELECT EBELN LIFNR FROM EKKO INTO TABLE ITEKKO FOR ALL ENTRIES IN ITEKBE
         WHERE EBELN eq ITEKBE-EBELN AND LIFNR IN S_LIFNR AND LIFNR  '0000000960'.
    SELECT MATNR MTART MEINS FROM MARA INTO TABLE ITMARA FOR ALL ENTRIES IN ITEKBE
            WHERE MATNR = ITEKBE-MATNR AND MTART IN S_MTART AND MATNR IN S_MATNR.
    IF ITMARA IS not  INITIAL..-->shold be not initial else it will bring whole database in itekko
      SELECT MATNR MAKTX FROM MAKT INTO TABLE ITMAKT FOR ALL ENTRIES IN ITMARA
                         WHERE MATNR EQ ITMARA-MATNR.
    ENDIF.
  ENDIF.
  LOOP AT ITEKBE.
    ITAB-EBELN = ITEKBE-EBELN.
    ITAB-EBELP = ITEKBE-EBELP.
    ITAB-BELNR = ITEKBE-BELNR.
    ITAB-MENGE = ITEKBE-MENGE.
    ITAB-BUDAT = ITEKBE-BUDAT.
    ITAB-LSMEH = ITEKBE-LSMEH.
    ITAB-BWART = ITEKBE-BWART.
    ITAB-LFBNR = ITEKBE-LFBNR.
    ITAB-DMBTR = ITEKBE-DMBTR.
    ITAB-WERKS = ITEKBE-WERKS.
    ITAB-MATNR = ITEKBE-MATNR.
    READ TABLE ITMARA WITH KEY MATNR = ITEKBE-MATNR.---> Use Binary Search make sure data is sort befor loop
    IF SY-SUBRC = 0.
      ITAB-MTART = ITMARA-MTART.
      ITAB-MEINS = ITMARA-MEINS.
    ENDIF.
    READ TABLE ITEKKO WITH KEY EBELN  = ITEKBE-EBELN..---> Use Binary Search
    IF SY-SUBRC = 0.
      ITAB-LIFNR = ITEKKO-LIFNR.
    ENDIF.
    READ TABLE ITMAKT WITH KEY MATNR = ITEKBE-MATNR..---> Use Binary Search
    IF SY-SUBRC = 0.
      ITAB-MAKTX = ITMAKT-MAKTX.
    ENDIF.
    APPEND ITAB.
    SORT ITAB BY EBELN.--> Dont use sort insdie loop
  ENDLOOP.
  SELECT EKBE~EBELN EKBE~EBELP EKBE~BELNR
EKBE~BUDAT EKBE~BWART EKBE~MENGE EKBE~LFBNR EKBE~MATNR EKBE~XWSBR
    EKBE~LSMEH FROM EKBE
    INNER JOIN MARA ON MARA~MANDT = EKBE~MANDT
       AND MARA~MATNR = EKBE~MATNR
      INNER JOIN EKKO ON EKKO~MANDT = EKBE~MANDT
       AND EKKO~EBELN = EKBE~EBELN
    INTO CORRESPONDING FIELDS OF TABLE ITAB1 WHERE EKBE~BUDAT IN S_BUDAT
      AND MARA~MTART IN S_MTART AND EKKO~LIFNR IN S_LIFNR
      AND EKBE~MATNR IN S_MATNR AND EKBE~WERKS IN S_WERKS AND EKBE~VGABE = '1'
        AND BWART IN ('102', '122') .  "and ekbe~XWSBR = ' '