PERFORMANCE OF INNER JIONS ..

Question

HI,
SELECT LIFNR MBLNR MATNR WERKS SUM( MENGE ) SUM( DMBTR )
               CHARG BWART MJAHR INTO
               (ITAB-LIFNR, ITAB-MBLNR, ITAB-MATNR, ITAB-WERKS,
               ITAB-MENGE,ITAB-DMBTR, ITAB-CHARG, ITAB-BWART,
               ITAB-MJAHR)
               FROM MSEG
               WHERE ( WERKS IN WERKS AND
                       LIFNR IN LIFNR AND
                       CHARG IN CHARG AND
                       BWART BETWEEN '101' AND '102' AND
                       EBELN BETWEEN '4701000000' AND '4701999999' ) OR
                     ( WERKS IN WERKS AND
                       LIFNR IN LIFNR AND
                       CHARG IN CHARG AND
                       BWART BETWEEN '101' AND '102' AND
                       EBELN BETWEEN '4704000000' AND '4704999999' )
                     GROUP BY LIFNR MBLNR MATNR WERKS CHARG BWART MJAHR.
        SELECT BUDAT INTO (ITAB-BUDAT)
               FROM MKPF
               WHERE BUDAT IN BUDAT
                 AND MBLNR EQ ITAB-MBLNR
                 AND MJAHR EQ ITAB-MJAHR.
        SELECT SINGLE BKLAS INTO (TEMP_BKLAS)
          FROM MBEW WHERE BKLAS IN BKLAS AND
                          MATNR EQ ITAB-MATNR.
I HAVE TO COMBINE ALL THE ABOVE PROGRAMS IN 1 STMTS.
   INSTEAD OF GROUP BY WAT TO USE TO REDUCE PERFORMANCE ISSUE
CAN ANY ONE HELIP ME OUT?

Answer 1

CTUALLY GO THROUGH MKPF( I GUESS u MUST BE HAVING A DATE RANGE FOR SELECTION...IM WRITING ACCORDING TO THAT)
SELECT MBLNR MJAHR INTO TABLE IT_MKPF FROm MKPF WHERE BUDAT in SoBUDAT <-----THE DATE RANGE
sort IT_MKPF by mblnr mjahr ascending.
SELECT MJAHR MBLNR MATNR WERKS MENGE BWART LIFNR DMBTR CHARG 
INTO TABLE ITAB FOR ALL ENTRIES IN IT_MKPF WHERE MBLNR = it_MKPF-MBLNR
AND MJAHR = IT_MKPF-MJAHR
and matnr ge v_matnr     <---OPT TECHNIQUE
AND WERKS IN WERKS
AND BWART in ('101','102')
AND EBELN in RA_EBELN
and LIFNR in LIFNR
and charg in charg.
if ITAB[] is not initial.
sort itab by matnr ascending.
select matnr bklas into table it_bklas from mbew for all entries in ITAB
where matnr = ITAB-MATNR and bklas in bklas.
endif.
after selection is done loop through the needed  internal tables and join the records....