ABAP 将Range 条目数转化

 RANGES:r_vbeln FOR lips-vbeln.
  r_vbeln-sign = 'I'.
  r_vbeln-option = 'EQ'.
  LOOP AT gt_item INTO gw_item .
    r_vbeln-low = gw_item-vbeln.
    APPEND r_vbeln.
  ENDLOOP.
  DATA: line TYPE i.
  SORT:r_vbeln.
  DELETE ADJACENT DUPLICATES FROM r_vbeln.
  IF LINES( r_vbeln ) > .
    REFRESH r_vbeln.
    r_vbeln-sign = 'I'.
    r_vbeln-option = 'BT'.
    SORT gt_item BY vbeln.
    READ TABLE gt_item INTO gw_item INDEX .
    r_vbeln-low = gw_item-vbeln.
    CLEAR:line.
    DESCRIBE TABLE gt_item LINES line.
    READ TABLE gt_item INTO gw_item  INDEX line.
    r_vbeln-high = gw_item-vbeln.
   SELECT vbeln posnr vgbel vgpos INTO TABLE gt_lips FROM lips WHERE vgbel BETWEEN r_vbeln-low and r_vbeln-high.
  ELSE.
    SELECT vbeln posnr vgbel vgpos INTO TABLE gt_lips FROM lips WHERE vgbel IN r_vbeln.
  ENDIF.