performance issue in report

[Former Member]

Dear experts,

is there any alternative solution for following code

     IF wa_final-vat_cst IS INITIAL .

       READ TABLE it_mseg INTO wa_mseg WITH KEY  mblnr = wa_j_1iexcdtl-rdoc2 mjahr = p_docyr matnr = wa_j_1iexcdtl-matnr..

       READ TABLE it_rseg INTO wa_rseg WITH KEY lfbnr = wa_mseg-lfbnr .

       LOOP AT it_temp INTO wa_temp WHERE lfbnr = wa_rseg-lfbnr.

         READ TABLE it_bkpf INTO wa_bkpf WITH KEY awkey = wa_temp-awkey . " belnr = wa_temp-belnr.

         READ TABLE it_bset INTO wa_bset WITH KEY belnr = wa_bkpf-belnr kschl = 'JVRD'.

         wa_final-belnr = wa_bkpf-belnr.

         lv_kbetr = wa_bset-kbetr / 10.

*        wa_final-vat_cst = wa_bset-hwste.

*      modify it_final FROM wa_final.

       ENDLOOP.

     ENDIF.

Regards,

Danny

[Former Member]

First read (again) documentation of READ TABLE and LOOP AT WHERE statement, look for ‘performance’.

• Insure that tables read with READ TABLE are sorted either by SORT (then add a BINARY SEARCH) or (better) by their type.
• For ‘it_temp’, to optimize the LOOP AT WHERE, you cannot use SORT but must use a TYPE SORTED or equivalent (HASHED, secondary index) definition.

Regards,

Raymond

[former_member196331]

HI,

One Small suggestions I would like to suggest.

After read statement immediately  You have to check .

Read statement.

if sy-subrc eq 0.

read statement

if sy-subrc eq 0.

endif.

endif.

If the record is existing  or not we can know.

[Former Member]

Include Sort by and read with binary search.

[Former Member]

Thank u guys

[Former Member]

Hi,

modify your code like this::

SORT  it_mseg BY MLBNR MJAHR MATNR.

SORT IT_RSEG BY LFBNR.

SORT IT_BKPF BY AWKEY .

SORT IT_BSET BY BELNR.

IF wa_final-vat_cst IS INITIAL .

       READ TABLE it_mseg INTO wa_mseg WITH KEY  mblnr = wa_j_1iexcdtl-rdoc2 mjahr = p_docyr matnr = wa_j_1iexcdtl-matnr BINARY SEARCH.

       READ TABLE it_rseg INTO wa_rseg WITH KEY lfbnr = wa_mseg-lfbnr   BINARY SEARCH.

       LOOP AT it_temp INTO wa_temp WHERE lfbnr = wa_rseg-lfbnr.

         READ TABLE it_bkpf INTO wa_bkpf WITH KEY awkey = wa_temp-awkey BINARY SEARCH .  " belnr = wa_temp-belnr  BINARY SEARCH.

         READ TABLE it_bset INTO wa_bset WITH KEY belnr = wa_bkpf-belnr kschl = 'JVRD'.

         wa_final-belnr = wa_bkpf-belnr  BINARY SEARCH.

         lv_kbetr = wa_bset-kbetr / 10.

*        wa_final-vat_cst = wa_bset-hwste.

*      modify it_final FROM wa_final.

       ENDLOOP.

     ENDIF.

thanks!!

[RaymondGiuseppi]

First read (again) documentation of READ TABLE and LOOP AT WHERE statement, look for ‘performance’.

• Insure that tables read with READ TABLE are sorted either by SORT (then add a BINARY SEARCH) or (better) by their type.
• For ‘it_temp’, to optimize the LOOP AT WHERE, you cannot use SORT but must use a TYPE SORTED or equivalent (HASHED, secondary index) definition.

Regards,

Raymond

[Former Member]

hi,

there is a concept of parallel cursor in SAP ABAP to avoid performance issues with nested loops with where condition.

data: lv_tabix type sy-tabix.

sort it_temp by lfbnr.

read table it_temp into wa_temp with key lfbnr = wa_resg-lfbnr.

if sy-subrc is initial.

  lv_tabix  = sy-tabix.

LOOP AT it_temp INTO wa_temp FROM lv_tabix.

  if wa_resg-lfbnr <> wa_temp-lfbnr.

  exit.

  endif.

READ TABLE it_bkpf INTO wa_bkpf WITH KEY awkey = wa_temp-awkey BINARY SEARCH .  " belnr = wa_temp-belnr  BINARY SEARCH.

   READ TABLE it_bset INTO wa_bset WITH KEY belnr = wa_bkpf-belnr kschl = 'JVRD'.

         wa_final-belnr = wa_bkpf-belnr  BINARY SEARCH.

         lv_kbetr = wa_bset-kbetr / 10.

ENDLOOP.

thanks!!