sap中inner join怎么用

和数据库的差不多

TABLES: mara.

TYPES: BEGIN OF ty_material,
matnr TYPE mara-matnr,
mtart TYPE mara-mtart,
maktx TYPE makt-maktx,
END OF ty_material.

DATA: lt_material TYPE STANDARD TABLE OF ty_material,
lw_material TYPE ty_material.

SELECTION-SCREEN BEGIN OF BLOCK blk1.

SELECT-OPTIONS: so_matnr FOR mara-matnr.

SELECTION-SCREEN END OF BLOCK blk1.

START-OF-SELECTION.

SELECT mara~matnr
mara~mtart
makt~maktx
INTO TABLE lt_material
FROM mara INNER JOIN makt
ON mara~matnr = makt~matnr
WHERE mara~matnr in so_matnr
and spras = 'EN'.

LOOP AT lt_material INTO lw_material.

WRITE: / lw_material-matnr, lw_material-mtart, lw_material-maktx.

ENDLOOP.