1.排序

  升序 sort itab (ascending),降序 sort itab descending.

2.ABAP删除重复行(比较所有列的值)。

  DELETE ADJACENT DUPLICATES FROM ITAB.

3.若有指定条件时,需先按某列排序,再按该列删除。

  SORT ITAB_I BY XBLNR.
  DELETE ADJACENT DUPLICATES FROM ITAB_I COMPARING XBLNR

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