Inner Join - whats wrong?

Question

Hello there,
I was trying to make an Inner Join, but unfortunately without success.
there is the code, can someone pls tell me what is wrong??
DATA: gs_mara TYPE mara,
      gt_mara TYPE STANDARD TABLE OF mara.
DATA: gs_marc TYPE marc,
      gt_marc TYPE STANDARD TABLE OF marc.
DATA: gs_makt TYPE makt,
      gt_makt TYPE STANDARD TABLE OF makt.
DATA: gs_t001w TYPE t001w,
      gt_t001w TYPE STANDARD TABLE OF t001w.
TYPES: BEGIN OF ts_ausgabe,
       matnr TYPE matnr,
       mtart TYPE mtart,
       matkl TYPE matkl,
       meins TYPE meins,
       werks TYPE werks_d,
       dispo TYPE dispo,
       adrnr TYPE adrnr,
       END OF ts_ausgabe.
DATA: gs_ausgabe TYPE ts_ausgabe.
DATA: gt_ausgabe TYPE STANDARD TABLE OF ts_ausgabe.
SELECT-OPTIONS: pr_matnr FOR gs_mara-matnr,
                pr_werks FOR gs_marc-werks.
START-OF-SELECTION.
  select a~matnr b~werks c~dispo d~adrnr e~mtart f~matkl g~meins
  INTO CORRESPONDING FIELDS OF TABLE gt_ausgabe
  FROM        mara AS a  INNER  JOIN marc AS b
  ON b~matnr = a~matnr
  INNER  JOIN marc AS c  ON c~matnr = a~matnr
  INNER JOIN t001w AS d  ON d~werks = a~matnr 
  INNER  JOIN mara AS e  ON e~matnr = a~matnr
  INNER  JOIN mara AS f  ON f~matnr = a~matnr
  INNER  JOIN mara AS g  ON g~matnr = a~matnr
  where a~matnr = pr_matnr
    and b~werks = pr_werks
    and c~dispo = pr_dispo
    and d~adrnr = pr_adrnr
    and e~mtart = pr_mtart
    and f~matkl = pr_matkl
    and g~meins = pr_meins.
  write: / matnr dispo adrnr mtart matkl meins.
    LOOP AT gt_mara INTO gs_mara.
      READ TABLE gt_marc INTO gs_marc WITH KEY matnr = gs_mara-matnr.
      IF sy-subrc = 0.
        MOVE: gs_mara-matnr TO gs_ausgabe-matnr,
              gs_mara-mtart TO gs_ausgabe-mtart,
              gs_mara-matkl TO gs_ausgabe-matkl,
              gs_mara-meins TO gs_ausgabe-meins,
              gs_marc-werks TO gs_ausgabe-werks,
              gs_marc-dispo TO gs_ausgabe-dispo,
              gs_t001w-adrnr TO gs_ausgabe-adrnr.
        WRITE: / gs_mara-matnr, gs_mara-mtart, gs_mara-matkl, gs_mara-meins, gs_marc-werks, gs_marc-dispo, gs_t001w-adrnr.
        APPEND gs_ausgabe TO gt_ausgabe.
      ENDIF.
    ENDLOOP.
    LOOP AT gt_ausgabe INTO gs_ausgabe.
      WRITE: / sy-vline, gs_ausgabe-matnr,
               sy-vline, gs_ausgabe-mtart,
               sy-vline, gs_ausgabe-matkl,
               sy-vline, gs_ausgabe-meins,
               sy-vline, gs_ausgabe-werks,
               sy-vline, gs_ausgabe-dispo,
               sy-vline, gs_ausgabe-adrnr.
      ULINE.
    ENDLOOP.
Edited by: Thomas Zloch on Jun 20, 2011 10:19 AM - code tags added

Answer 1

hi ,
use this query 
select a~matnr b~werks b~dispo adrnr mtart matkl meins
  INTO CORRESPONDING FIELDS OF TABLE gt_ausgabe
  FROM        mara AS a  INNER  JOIN marc AS b
  ON b~matnr = a~matnr
*  INNER  JOIN marc AS c  ON c~matnr = a~matnr
  INNER JOIN t001w AS d  ON d~werks = b~werks 
  where a~matnr = pr_matnr
    and b~werks = pr_werks
    and c~dispo = pr_dispo
    and adrnr = pr_adrnr
    and mtart = pr_mtart
    and matkl = pr_matkl
    and meins = pr_meins.
Why  you are using mara table and marc table multiple times   ?
regards
Deepak.
Edited by: Deepak Dhamat on Jun 20, 2011 10:31 AM