Inifinite looping of internal table?

[Former Member]

Hi.

I have a piece of codes that loops through an internal table.

There isn't any syntax nor run-time errors, but my program seems to be hanging, even though there is only ONE record in my internal table!!

********************************************

DATA: UPLOAD_ITAB TYPE TABLE OF ZTA_S_CCA WITH HEADER LINE.

......

LOOP AT UPLOAD_ITAB.

....

APPEND UPLOAD_ITAB.

ENDLOOP.

********************************************

Is it because of the WITH HEADER LINE? But when i tried to remove it, I got a run-time error. Could anyone advise? Thanks.

[Sougata]

That is because you are adding lines to the same table you are looping at! On every loop pass a line is aaded to the same internal table as a result it goes into an infinite loop. Use another internal table when adding rows.

[Former Member]

Oh, I see.. Thanks a lot... Points given.

Actually, I wasn't trying to add new lines to the internal table.

I was actually trying to loop through the internal tables and make changes to the values in the internal table. Somehow the values don't get updated. Any idea why that is so?

********************************************

DATA: UPLOAD_ITAB TYPE TABLE OF ZTA_S_CCA WITH HEADER LINE.

......

LOOP AT UPLOAD_ITAB.

UPLOAD_ITAB-LAST_CHGED_BY = SY-UNAME. ==> the value is not updated!!!

ENDLOOP.

[former_member194669]

Hi,

DATA: UPLOAD_ITAB TYPE TABLE OF ZTA_S_CCA WITH HEADER LINE.
......
LOOP AT UPLOAD_ITAB.

UPLOAD_ITAB-LAST_CHGED_BY = SY-UNAME. 

modify UPLOAD_ITAB index sy-tabix. "<<<<<<<

ENDLOOP.

a®

[Former Member]

Then:

********************************************
DATA: upload_itab TYPE TABLE OF zta_s_cca WITH HEADER LINE.
......
LOOP AT upload_itab.

  upload_itab-last_chged_by = sy-uname. ==> the value is not updated!!!

  modify upload_itab transporting last_chged_by.

ENDLOOP.
********************************************

Rob

[rainer_hbenthal]

DATA: 
  UPLOAD_ITAB TYPE TABLE OF ZTA_S_CCA.

FIELD_SYMBOLS:
  <p> TYPE ZTA_S_CCA.


LOOP AT UPLOAD_ITAB assigning <p>.

<p>-LAST_CHGED_BY = SY-UNAME.
ENDLOOP.

[Former Member]

Try something like this:

********************************************
DATA: upload_itab TYPE TABLE OF zta_s_cca WITH HEADER LINE,
      temp_itab   TYPE TABLE OF zta_s_cca WITH HEADER LINE.
......
LOOP AT upload_itab.
  ....
  APPEND temp_itab.
ENDLOOP.

APPEND LINES OF temp_itab TO upload_itab.

********************************************

Rob

[messier31]

Hi,

LOOP AT UPLOAD_ITAB.

....

APPEND UPLOAD_ITAB. " Use some other internal table say upload_itab_tmp

ENDLOOP.

Enjoy SAP.

Pankaj Singh