SELECT a~matnr
         c~werks
         a~ersda
         a~ernam
         a~laeda
         a~aenam
         c~lvorm
         a~mtart
         a~meins
         INTO CORRESPONDING FIELDS OF TABLE gt_matnr
         FROM  mara AS a
         JOIN  marc AS c ON a~matnr = c~matnr
         WHERE a~lvorm NE 'X'
          AND  c~lvorm NE 'X'
          AND  a~extwg = 'ESH'.

여기서 생성된 gt_matnr을 가지고...

SELECT budat
        werks
        lgort
        prctr
        bwart
        shkzg
        matnr
        meins
        menge
        lifnr
        INTO CORRESPONDING FIELDS OF TABLE lt_zmmti50
            FROM  zmseg
           FOR ALL ENTRIES IN gt_matnr
          WHERE cpudt = i_date
           AND  matnr = gt_matnr-matnr
           AND  werks = gt_matnr-werks
           AND  bwart IN ('101', '102', '201', '202',
                          '261', '262', '701', '702', '351').

이런식으로 FOR ALL ENTRIES IN 구문을 이용하였는데 이방법말고 다른 방법없을까요? 속도가 너무 느린거 같습니다..