[ABAP] Mandantenübergreifendes Lesen von Daten aus DB-Tabellen

SELECT matnr
  INTO TABLE @DATA(it_mara)
  FROM mara CLIENT SPECIFIED
  UP TO 100 ROWS
  WHERE mandt = @sy-mandt " Mandant
    AND mtart = 'INST'.

  IF sy-subrc = 0.
    cl_demo_output=>display_data( it_mara ).
  ENDIF.