Select query performance

Question

Hi friends,
Assume that it_pos is an internla table and its having more than 15000 records.
Which of the following query will optimize performance of programme. <REMOVED BY MODERATOR>
SORT it_pos BY belnr.
     LOOP AT it_pos INTO wa_pos . 
          SELECT hkont zuonr budat blart wrbtr bschl xref3
                 INTO CORRESPONDING FIELDS OF   wa_bsis
                 FROM bsis
                 WHERE belnr = wa_pos-belnr
                 AND   hkont = wa_pos-konto
                 AND   zuonr = wa_pos-zuonr
                 AND   blart = 'WE'        "IN ('WE' , 'RE' , 'RO')
                 AND   bschl = '96'
                 AND   shkzg = 'H'
                 AND   budat = sta_date .
          APPEND wa_bsis to it_bsis.
          ENDSELECT.
     ENDLOOP.
      SELECT hkont zuonr budat blart wrbtr bschl xref3
   INTO CORRESPONDING FIELDS OF TABLE    it_bsis1
                 FROM bsis
                 FOR ALL ENTRIES IN it_pos
                 WHERE belnr = it_pos-belnr
                 AND   hkont = it_pos-konto
                 AND   zuonr = it_pos-zuonr
                 AND   blart = 'WE'        "IN ('WE' , 'RE' , 'RO')
                 AND   bschl = '96'
                 AND   shkzg = 'H'
                 AND   budat = sta_date .
Regards,
s.senthil kumar
Edited by: Alvaro Tejada Galindo on Feb 27, 2008 3:52 PM

Answer 1

Hi,
In addition to the suggestions given above, you can add the following things:
1) Add company code in the query if possible
2) Also add field GJAHR
3) Arrange the fields in the where clause as per sequence of the primary key combination
Once you do this, do the trace analysis and check if the proper index is being used or not.
Hope this helps.
Regards,
Shahu