ABAP动态生成经典应用之Dynamic SQL Excute 程序

转自：http://lxy0950.blogspot.com/2007_01_20_archive.html

开发说明：在SAP的系统维护过程中，有时我们需要修改一些Table中的数据，可是很多Table又不能直接在Tcode：SE16中修改， 使用的SAP ID又没有调试数据修改权限，这时我们应该怎么样修改数据呢？思路--> ABAP程序中的SQL 更新语句谁都有权限执行，只要我们能动态生成修改该Table字段的ABAP CODE动态执行即可！

开发技术：

1.SQL代码编写技术

1.动态程序代码生成技术

2.ABAP动态程序执行技术

注意事项：

SQL语法一定要准确，修改条件准确，修改数据后不违法数据唯一性原则

程序代码：如下

*******************************************************************
* (Copyright @2006 Mysingle Digital System Co.Ltd.
* All Rights Reserved|Confidential)
* System Module : ABAP CBO
* Use Status : Release 1.0
*******************************************************************
REPORT z_cbo_abap_02 MESSAGE-ID zp NO STANDARD PAGE HEADING.

DATA : fcode LIKE sy-ucomm,
changed LIKE s38e-buf_varied,
save_tabix LIKE sy-tabix,
tabix_count TYPE i,
select_key(10) TYPE c,
etc(80) TYPE c,
update_flag TYPE c,
line_cnt TYPE i,
prog(8) TYPE c,
msg(120) TYPE c,
msg_text(72) TYPE c,
confirm_flag TYPE c.

DATA: itab_sql LIKE abapsource OCCURS 0 WITH HEADER LINE,
itab_prog LIKE abapsource OCCURS 0 WITH HEADER LINE.

START-OF-SELECTION.

*程序执行直接进入ABAP代码编辑器
SET PF-STATUS 'PFSTA00'.
WRITE: /1 'Edit Your SQL ................' COLOR 2.

AT USER-COMMAND.

*动态生成程序修改确认
IF sy-ucomm = 'EDIT'.
PERFORM editor_sql.

*动态生成程序执行

ELSEIF sy-ucomm = 'EXEC' OR sy-ucomm = 'EDEX'.
REFRESH itab_prog.
CLEAR itab_prog.
IF update_flag = 'X'.
PERFORM exec_modify.
ENDIF.
ENDIF.

*&------------------------------------------------------------------*
*& Form editor_sql
*&------------------------------------------------------------------*
FORM editor_sql.
* CALL Editor
CALL FUNCTION 'EDITOR_APPLICATION'
EXPORTING
application = 'BF'
display = ' '
name = '[Edit Your SQL......]'
IMPORTING
fcode = fcode
changed = changed
TABLES
content = itab_sql.
* Translate Code Upper
LOOP AT itab_sql.
save_tabix = sy-tabix.
tabix_count = tabix_count + 1.
IF itab_sql-line = space OR itab_sql-line+(1) = '*'.
DELETE itab_sql INDEX save_tabix.
ENDIF.
TRANSLATE itab_sql-line TO UPPER CASE.
MODIFY itab_sql INDEX save_tabix.
ENDLOOP.

* Parsing input SQL code
LOOP AT itab_sql.
IF sy-tabix = 1.
SHIFT itab_sql-line LEFT DELETING LEADING space.
ENDIF.
save_tabix = sy-tabix + 1.
SPLIT itab_sql-line AT space INTO select_key etc.
IF select_key = 'SELECT'.
MESSAGE i433 WITH 'Donot support select syntax!^~^'.
stop.
* hehe~~Don't bother myself.
ELSEIF select_key = 'DELETE' OR select_key = 'UPDATE'
OR select_key = 'INSERT'.
update_flag = 'X'.
ENDIF.
ENDLOOP.

* Display the SQL code
sy-lsind = 0.
DELETE itab_sql WHERE line IS initial.
DESCRIBE TABLE itab_sql LINES line_cnt.
IF line_cnt = 0.
WRITE: /1 'Edit Your SQL ................' COLOR 2.
ELSE.
LOOP AT itab_sql.
WRITE: /1 itab_sql-line.
ENDLOOP.
ENDIF.
IF update_flag = 'Y'.
EXIT.
ENDIF.
ENDFORM. " editor_sql
*&------------------------------------------------------------------*
*& Form exec_modify
*&------------------------------------------------------------------*
FORM exec_modify.
IF sy-ucomm = 'EXEC'.
* Modify dialog box
CALL FUNCTION 'POPUP_TO_CONFIRM_STEP'
EXPORTING
textline1 = 'Do you want to really UPDATE?'
titel = 'Exit'
IMPORTING
answer = confirm_flag.
CASE confirm_flag.
WHEN 'N'. EXIT. "NO
WHEN 'A'. EXIT. "Cancel
WHEN 'J'. "perform exec_sql_update. "YES
ENDCASE.
ENDIF.
* Modify Program ABAP Code.
itab_prog-line = 'PROGRAM ZSQL19800526 MESSAGE-ID AT.'.
APPEND itab_prog.
itab_prog-line = 'DATA: COUNT TYPE I.'.
APPEND itab_prog.
itab_prog-line = 'FORM DYN2.'.
APPEND itab_prog.
itab_prog-line = 'EXEC SQL.'.
APPEND itab_prog.
LOOP AT itab_sql.
itab_prog-line = itab_sql-line.
APPEND itab_prog.
ENDLOOP.
itab_prog-line = 'ENDEXEC.'.
APPEND itab_prog.
itab_prog-line = 'MESSAGE I315 WITH ''Performed'' SY-DBCNT'.
CONCATENATE itab_prog-line '''' 'Records!^-^' '''' '.'
INTO itab_prog-line SEPARATED BY space.
APPEND itab_prog.
itab_prog-line = 'ENDFORM.'.
APPEND itab_prog.

* Dynamic Program Display
IF sy-ucomm = 'EDEX'.
CALL FUNCTION 'EDITOR_APPLICATION'
EXPORTING
application = 'BF'
display = ' '
name = 'Modify Program...'
IMPORTING
fcode = fcode
TABLES
content = itab_prog.
STOP.
ENDIF.

* Dynamic Program Excuted
GENERATE SUBROUTINE POOL itab_prog NAME prog
MESSAGE msg.
IF sy-subrc <> 0.
msg_text = msg+(80).
WRITE: /1 msg_text.
msg_text = msg+80(40).
WRITE: /1 msg_text.
ELSE.
PERFORM dyn2 IN PROGRAM (prog).
ENDIF.
ENDFORM. " exec_modify

程序实例：

1.程序执行界面，显示SQL CODE录入画面

2.我们要修改的数据，材料主数据Material Master Table：MARA中的材料CODE主键

SOH-DL3C ---> SOH-DL8C

3.数据修改SQL语句编写，这里就不详叙了

UPDATE MARA SET MATNR = 'SOH-DL3C' WHERE MATNR = 'SOH-DL8C'
AND ERSDA = '20040310'

4.修改动态ABAP程序生成确认修改

5.动态程序执行

6.程序成功执行提示信息

7.数据修改效果确认