Esempio di UNION DISTINCT

  DATA: lr_zauth TYPE RANGE OF zesd_auth.
  SELECT DISTINCT 'I', 'EQ', z_auth
    FROM ztsdo_ret_cancel
  UNION DISTINCT
  SELECT 'I', 'EQ', z_auth
    FROM ztsdo_ret_rej
    INTO TABLE @lr_zauth.
  IF lr_zauth[] IS NOT INITIAL.
    DELETE gi_gr_items WHERE zsd_auth IN lr_zauth.
  ENDIF.