1.对于查找内表中是否存在重复字段，这个问题SAP好像并没有给出直接的解决办法，只能通过间接的方法去做判断，我是这样给出的判断。
2.例子说明：
REPORT Z_ZHANGM_036.
DATA: BEGIN OF wa OCCURS 0,
col01 TYPE char10,
col02 TYPE char10,
col03 TYPE char10,
END OF wa,
itab LIKE TABLE OF wa.
DATA: BEGIN OF item OCCURS 0,
col01 TYPE char10,
col02 TYPE char10,
END OF item.
DATA:ls_item LIKE LINE OF item.
FIELD-SYMBOLS: like LINE OF wa.
*wa-col01 = ‘A’.
*wa-col02 = ‘B’.
*wa-col03 = ‘C’.
*APPEND wa.
wa-col01 = ‘A’.
wa-col02 = ‘B’.
wa-col03 = ‘D’.
APPEND wa.
wa-col01 = ‘B’.
wa-col02 = ‘C’.
wa-col03 = ‘C’.
APPEND wa.
*wa-col01 = ‘A’.
*wa-col02 = ‘B’.
*wa-col03 = ‘E’.
*APPEND wa.
*wa-col01 = ‘A’.
*wa-col02 = ‘C’.
*wa-col03 = ‘E’.
*APPEND wa.
*wa-col01 = ‘A’.
*wa-col

1.对于查找内表中是否存在重复字段，这个问题SAP好像并没有给出直接的解决办法，只能通过间接的方法去做判断，我是这样给出的判断。2.例子说明：REPORT Z_ZHANGM_036.DATA: BEGIN OF wa OCCURS 0,col01 TYPE char10,col02 TYPE char10,col03 TYPE char10,END OF wa,itab LIKE TABLE OF wa.DATA: BEGIN OF item OCCURS 0,col01 TYPE ch DESCRIBE TABLEIT_TEMP LINES L_LINE1. SORT IT_TEMP BYMATID. DELETEADJACENT DUPLICATES FROM IT_TEMP COMPARING MATID. DESCRIBE TABLEIT_TEMP LINES L_LINE2. IF L_LINE1    MESSAGE 'Red type-pools: slis. field-symbols: <dyn_table> type standard table, ” 内表结构 <dyn_wa>, ” 表头 <dyn_field>. ” 项 data: dy_table type ref to data, dy_line type ref to data, ” 行 xfc type lvc_s_fcat, ” 列结构 ifc type lvc_t_fcat. call method cl_alv_table_create=>create_dynamic_table exporting it_fieldcatalog = ifc importing ep_table = dy_table. assign dy_table->* to <dyn_table>. create data dy_line like line of <dyn_table>. assign dy_line->* to <dyn_wa>.