1、創建一個搜索幫助ZBISMT，檢索MARA表的BISMT字段內容
執行測試可看到現在檢索出來的數據有很多重複的
2、複製搜索幫助出口的標準函數F4IF_SHLP_EXIT_EXAMPLE爲YF4IF_SHLP_EXIT_ZBISMT，在函數內添加相應代碼：
function yf4if_shlp_exit_zbismt.
*"--------------------------------------------------------------------
*"*"本地接口:
*" TABLES
*" SHLP_TAB TYPE SHLP_DESCT
*" RECORD_TAB STRUCTURE SEAHLPRES
*" CHANGING
*" VALUE(SHLP) TYPE SHLP_DESCR
*" VALUE(CALLCONTROL) LIKE DDSHF4CTRL STRUCTURE DDSHF4CTRL
*"--------------------------------------------------------------------
* EXIT immediately, if you do not want to handle this step
if callcontrol-step <> 'SELONE' and
callcontrol-step <> 'SELECT' and
" AND SO ON
callcontrol-step <> 'DISP'.
exit.
endif.
*"----------------------------------------------------------------------
* STEP SELONE (Select one of the elementary searchhelps)
*"----------------------------------------------------------------------
* This step is only called for collective searchhelps. It may be used
* to reduce the amount of elementary searchhelps given in SHLP_TAB.
* The compound searchhelp is given in SHLP.
* If you do not change CALLCONTROL-STEP, the next step is the
* dialog, to select one of the elementary searchhelps.
* If you want to skip this dialog, you have to return the selected
* elementary searchhelp in SHLP and to change CALLCONTROL-STEP to
* either to 'PRESEL' or to 'SELECT'.
if callcontrol-step = 'SELONE'.
* PERFORM SELONE .........
exit.
endif.
*"----------------------------------------------------------------------
* STEP PRESEL (Enter selection conditions)
*"----------------------------------------------------------------------
* This step allows you, to influence the selection conditions either
* before they are displayed or in order to skip the dialog completely.
* If you want to skip the dialog, you should change CALLCONTROL-STEP
* to 'SELECT'.
* Normaly only SHLP-SELOPT should be changed in this step.
if callcontrol-step = 'PRESEL'.
* PERFORM PRESEL ..........
exit.
endif.
*"----------------------------------------------------------------------
* STEP SELECT (Select values)
*"----------------------------------------------------------------------
* This step may be used to overtake the data selection completely.
* To skip the standard seletion, you should return 'DISP' as following
* step in CALLCONTROL-STEP.
* Normally RECORD_TAB should be filled after this step.
* Standard function module F4UT_RESULTS_MAP may be very helpfull in this
* step.
if callcontrol-step = 'SELECT'.
* PERFORM STEP_SELECT TABLES RECORD_TAB SHLP_TAB
* CHANGING SHLP CALLCONTROL RC.
* IF RC = 0.
* CALLCONTROL-STEP = 'DISP'.
* ELSE.
* CALLCONTROL-STEP = 'EXIT'.
* ENDIF.
exit. "Don't process STEP DISP additionally in this call.
endif.
*"----------------------------------------------------------------------
* STEP DISP (Display values)
*"----------------------------------------------------------------------
* This step is called, before the selected data is displayed.
* You can e.g. modify or reduce the data in RECORD_TAB
* according to the users authority.
* If you want to get the standard display dialog afterwards, you
* should not change CALLCONTROL-STEP.
* If you want to overtake the dialog on you own, you must return
* the following values in CALLCONTROL-STEP:
* - "RETURN" if one line was selected. The selected line must be
* the only record left in RECORD_TAB. The corresponding fields of
* this line are entered into the screen.
* - "EXIT" if the values request should be aborted
* - "PRESEL" if you want to return to the selection dialog
* Standard function modules F4UT_PARAMETER_VALUE_GET and
* F4UT_PARAMETER_RESULTS_PUT may be very helpfull in this step.
if callcontrol-step = 'DISP'.
* PERFORM AUTHORITY_CHECK TABLES RECORD_TAB SHLP_TAB
* CHANGING SHLP CALLCONTROL.
sort record_tab.
delete adjacent duplicates from record_tab comparing all fields.
exit.
endif.
endfunction.
3、激活函數，並在創建搜索幫助界面的Search help exit內輸入創建的函數：YF4IF_SHLP_EXIT_ZBISMT
4，激活搜索幫助，執行測試搜索結果可以看到：
