Code: Alles auswählen.
SELECT *
FROM mkpf
INNER JOIN mseg on mseg-mblnr = mkpf-mblnr
INTO CORRESPONDING FIELDS OF TABLE lt_blabla
WHERE mkpf~werks IN s_werks
AND mkpf~zkfeld1 IN s_kunnr
AND mkpf-mblnr IN s_mblnr
AND mkpf-budat IN s_budat
AND mseg~matnr IN s_matnr.