Please explain how to use binary search in this loop.

Hi,
I want to use the binary search in below Read please give me solution....
LOOP AT it_vbfa_temp ASSIGNING <fs_vbfa_temp>.
      CLEAR is_ekbz1.
      READ TABLE it_ekbz1 INTO is_ekbz1 WITH KEY xblnr = <fs_vbfa_temp>-deliv flag = space.
      IF sy-subrc = 0.
        w_tabix = sy-tabix.
        is_ekbz1-tknum = <fs_vbfa_temp>-shipno.
        is_ekbz1-flag = 'X'.
        MODIFY it_ekbz1 FROM is_ekbz1 INDEX w_tabix TRANSPORTING tknum flag.
ENDLOOP.

Hi,
Thanks for the inputs given.. Please find the solution for the same ....
   CLEAR is_ekbz1.
    is_ekbz1-flag = 'X'.
    MODIFY it_ekbz1 FROM is_ekbz1 TRANSPORTING flag WHERE flag IS INITIAL.
    SORT it_ekbz1 BY ebeln xblnr lifnr flag.
LOOP AT it_vbfa_temp ASSIGNING <fs_vbfa_temp>.
      CLEAR is_ekbz1.
      READ TABLE it_ekbz1 INTO is_ekbz1 WITH KEY xblnr = <fs_vbfa_temp>-deliv flag = 'X' BINARY SEARCH.
      IF sy-subrc = 0.
        w_tabix = sy-tabix.
        is_ekbz1-tknum = <fs_vbfa_temp>-shipno.
        is_ekbz1-flag = space.
        MODIFY it_ekbz1 FROM is_ekbz1 INDEX w_tabix TRANSPORTING tknum flag.
ENDLOOP.
Regards,
Srinivas
Edited by: Srininas on Apr 6, 2010 12:16 PM
Edited by: Srininas on Apr 6, 2010 12:17 PM

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