Accessing a field from a structure with out header line

Hi Guys,
I am trying to assign a field from a structure type line of data to another field.
This structure type line don't have a header line.
here is the example.
IT_EKKNU TYPE MMPUR_EKKNU.
when I use following statement..
move IT_EKKNU-kostl to e_cekko-kostl.
Iam getting error "IT_ENKKNU is not a structure or Internal table with header line.
How to access the fields in structure IT_EKKNU.
Thank U for ur time.
Cheers
S Kumar

Here IT_EKKNU is an internal table without Header line.
You can use a structure for assignment.
DATA: IT_EKKNU TYPE MMPUR_EKKNU,
wa_ekknu type ekknu.
read table it_ekknu into wa_ekknu........
move wa_EKKNU-kostl to e_cekko-kostl.
*modify the code for your conditions*.

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Internal table with out header line

Hi friends,
Can u send me code for internal table with out header line : how to declare ,how to populate data and how to access the data
Regards,
vijay

Hi Vijay
There are several ways to declare an internal table without header line:
A) You can define a type table
TYPES: BEGIN OF TY_ITAB OCCURS 0,
        INCLUDE STRUCTURE ZTABLE.
TYPES: END   OF TY_ITAB.
and then your intrnal table:
DATA: ITAB TYPE TY_ITAB.
B) DATA: ITAB TYPE/LIKE STANDARD TABLE OF ZTABLE.
C) DATA: ITAB TYPE/LIKE ZTABLE OCCURS 0.
All these ways create a STANDARD TABLE
You can create other types of internal table, for example SORTED TABLE or HASHED TABLE.
These kinds of table can allow to improve the performance because they use different rules to read the data.
When it wants to manage a table without header line, it need a work area, it has to have the same structure of table.
DATA: WA LIKE ZTABLE.
DATA: T_ZTABLE LIKE STANDARD TABLE OF ZTABLE.
A) To insert the record:
If you use INTO TABLE option you don't need workarea
SELECT * FROM ZTABLE INTO TABLE T_ZTABLE
                                  WHERE FIELD1 = 'Z001'
                                    AND FIELD2 = '2006'.
but if you want to append a single record:
SELECT * FROM ZTABLE INTO wa WHERE FIELD1 = 'Z001'
                               AND FIELD2 = '2006'.
APPEND WA TO T_ZTABLE.
ENDSELECT.
Now you need workarea.
B) To read data: you need always a workarea:
LOOP AT T_ZTABLE INTO WA WHERE ....
WRITE: / WA-FIELD1, WA-FIELD2, WA-FIELD3.
ENDLOOP.
or
READ T_ZTABLE INTO WA WITH KEY FIELD3 = '0000000001'.
IF SY-SUBRC = 0.
WRITE: / WA-FIELD1, WA-FIELD2, WA-FIELD3.
ENDIF.
Anyway if you want to know only if a record exists, you can use the TRANSPORTING NO FIELDS option, in this case it doesn't need a workarea.
READ T_ZTABLE WITH KEY FIELD3 = '0000000001'
                                  TRANSPORTING NO FIELDS.
IF SY-SUBRC = 0.
WRITE 'OK'.
ENDIF.
C) To update the data: it always needs a workarea
LOOP AT T_ZTABLE INTO WA WHERE FIELD3 = '0000000001'.
WA-FIELD3 = '0000000002'.
MODIF T_ZTABLE FROM WA.
ENDLOOP.
or
READ T_ZTABLE INTO WA WITH KEY FIELD3 = '0000000001'.
IF SY-SUBRC = 0.
WA-FIELD3 = '0000000002'.
MODIF T_ZTABLE FROM WA INDEX SY-TABIX
ENDIF.
AT the end you can use the internal table to update database:
MODIFY/UPDATE/INSERT ZTABLE FROM T_ZTABLE.
See Help online for key words DATA, you can find out more details.
Max
Message was edited by: max bianchi

Download alv report output to excel format with out header line

Hi experts,
i want to download a alv report output into excel formatt with out the header line but it has to download including field description. as this output will fed into another transaction, the downloaded excel file should be with out header line.
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Report   : Zabc                      ABAP Development          Page :     1
Run Date : 12/14/06                                                     System: UD400
Run Time : 08:45:37
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could somebody help me please.
thanks
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hi jayanti,
thanks for your response.
i have delclared all the field types as character but still it is not downloading and it 's sy-subrc is 4... the code is as below.
*field names
lt_fieldnames-value = 'Material Number'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'Plant'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'Material Group'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'Material Description'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'UOM'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'Price Unit'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'Material Type'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'X-Plant Status'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'Valuation Class'.
APPEND lt_fieldnames.
lt_fieldnames-value = lw_avmng.
APPEND lt_fieldnames.
lt_fieldnames-value = lw_avntp.
APPEND lt_fieldnames.
lt_fieldnames-value = 'Latest PO Qty'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'Latest PO Cost'.
APPEND lt_fieldnames.
lt_fieldnames-value = 'PO Creation Date'.
APPEND lt_fieldnames.
lt_fieldnames-value = lw_fcaqt.
APPEND lt_fieldnames.
lt_fieldnames-value = 'Prev. Yr. Std. Cost'.
APPEND lt_fieldnames.
lt_fieldnames-value = lw_stcst.
APPEND lt_fieldnames.
CALL FUNCTION 'MS_EXCEL_OLE_STANDARD_DAT'
    EXPORTING
      file_name                       = 'XLSHEET'
    CREATE_PIVOT                    = 0
    DATA_SHEET_NAME                 = ' '
    PIVOT_SHEET_NAME                = ' '
    PASSWORD                        = ' '
    PASSWORD_OPTION                 = 0
    TABLES
    PIVOT_FIELD_TAB                 =
      data_tab                        = t_output1
      fieldnames                      = lt_fieldnames
    EXCEPTIONS
      file_not_exist                  = 1
      filename_expected               = 2
      communication_error             = 3
      ole_object_method_error         = 4
      ole_object_property_error       = 5
      invalid_pivot_fields            = 6
      download_problem                = 7
      OTHERS                          = 8
IF sy-subrc <> 0.
    MESSAGE e001 WITH 'Data could not be downloaded'.
ENDIF.
ENDFORM.                               " z_dwn_xl
thanks
deepu

How to access a field of a structure with a field symbol?

Dear all,
Currently I'm trying to access the fields of a structure (called "ls_tbl") dynamicly. The code looks as follows (of course the field symbols are defined correctly ;-):
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    ASSIGN lv_f2 TO <lv_f2>.
    lv_pp = ls_tbl-(<lv_f1>).
    lv_pt = ls_tbl-(<lv_f2>).
Unfortunatly I get the following error message:
<<The data object "LS_TBL" does not have a component called "".>>
I really do not understand why ABAP is trying to interpret the field symbol name as a string. Does anybody have a clue how to access the field of ls_tbl with the help of a field symbol?
Many thanks!!!

Hi ,
Please check the below sample code .
data : begin of st_table,
            myfiledname type c value '1',
            myfiledname1 type c value '2',
       end of st_table .
data : lv_filedname(11) type c value 'MYFILEDNAME'
filed-symbols : <fs> type any,
                <fs_table> type any.
assign st_table to <fs_table>.
Assign lv_filedname to <fs> .
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With header line & with out header line ?

what is difference between with header line & without header line ?

When you create an internal table object you can also declare a header line with the same name. You can use the header line as a work area when you process the internal table. The ABAP statements that you use with internal tables have short forms that you can use if your internal table has a header line. These statements automatically assume the header line as an implicit work area. The following table shows the statements that you must use for internal tables without a header line, and the equivalent statements that you can use for internal tables with a header line:
Operations without header line
Operations with header line
Operations for all Table Types
INSERT <wa> INTO TABLE <itab>.
INSERT TABLE ITAB.
COLLECT <wa> INTO <itab>.
COLLECT <itab>.
READ TABLE <itab> ... INTO <wa>.
READ TABLE <itab> ...
MODIFY TABLE <itab> FROM <wa> ...
MODIFY TABLE <itab> ...
MODIFY <itab> FROM <wa> ...WHERE ...
MODIFY <itab> ... WHERE ...
DELETE TABLE <itab> FROM <wa>.
DELETE TABLE <itab>.
LOOP AT ITAB INTO <wa> ...
LOOP AT ITAB ...
Operations for Index Tables
APPEND <wa> TO <itab>.
APPEND <itab>.
INSERT <wa> INTO <itab> ...
INSERT <itab> ...
MODIFY <itab> FROM <wa> ...
MODIFY <itab> ...
Using the header line as a work area means that you can use shorter statements; however, they are not necessarily easier to understand, since you cannot immediately recognize the origin and target of the assignment. Furthermore, the fact that the table and its header line have the same name can cause confusion in operations with entire internal tables. To avoid confusion, you should use internal tables with differently-named work areas.
The following example shows two programs with the same function. One uses a header line, the other does not.
With header line:
TYPES: BEGIN OF LINE,
COL1 TYPE I,
COL2 TYPE I,
END OF LINE.
DATA ITAB TYPE HASHED TABLE OF LINE WITH UNIQUE KEY COL1
WITH HEADER LINE.
DO 4 TIMES.
ITAB-COL1 = SY-INDEX.
ITAB-COL2 = SY-INDEX ** 2.
INSERT TABLE ITAB.
ENDDO.
ITAB-COL1 = 2.
READ TABLE ITAB FROM ITAB.
ITAB-COL2 = 100.
MODIFY TABLE ITAB.
ITAB-COL1 = 4.
DELETE TABLE ITAB.
LOOP AT ITAB.
WRITE: / ITAB-COL1, ITAB-COL2.
ENDLOOP.
Without header line:
TYPES: BEGIN OF LINE,
COL1 TYPE I,
COL2 TYPE I,
END OF LINE.
DATA: ITAB TYPE HASHED TABLE OF LINE WITH UNIQUE KEY COL1,
WA LIKE LINE OF ITAB.
DO 4 TIMES.
WA-COL1 = SY-INDEX.
WA-COL2 = SY-INDEX ** 2.
INSERT WA INTO TABLE ITAB.
ENDDO.
WA-COL1 = 2.
READ TABLE ITAB FROM WA INTO WA.
WA-COL2 = 100.
MODIFY TABLE ITAB FROM WA.
WA-COL1 = 4.
DELETE TABLE ITAB FROM WA.
LOOP AT ITAB INTO WA.
WRITE: / WA-COL1, WA-COL2.
ENDLOOP.
The list, in both cases, appears as follows:
1 1
2 100
3 9
The statements in the program that does not use a header line are easier to understand. As a further measure, you could have a further work area just to specify the key of the internal table, but to which no other values from the table are assigned.
Internal table with header line
you can use anywhere except obkect oriented concept.
Internal table without header line :
You should use in Object oriented concept..
Always try to use without header line,performance point of view it is best..
Example :
Without header line.
Structure
types : begin of ty_itab ,
matnr type mara-matnr,
end of ty_itab.
Internal table
data i_itab type standard table of ty_itab .
Work area
data wa_itab like line of i_itab
With header line
data : begin of i_itab occurs 0,
matnr like mara-matnr,
end of i_itab
itab with header lines are obsolete, anyway it will work but not recommended. instead use work area or more effiecient is field symbols. so donot use itab with header line.
i will explain use of itab w/o header line.
Data: itab1 type standard table of mara with header line occurs 0,
itab2 type standard table of mara,
wa_itab2 type mara.
loop at itab1.
"This will work fine.
endloop.
loop at itab2.
"This will give erro that itabd does not hav workarea
endloop.
"so write
loop at itab2 into wa_itab2.
"This will work
endloop.
<b>The difference between
whih header line and with out heater line of internal table.
ex:-
a) Data : itab like mara occurs 0 with header line.
b) Data: itab like mara occurs 0.
-While adding or retrieving records to / from internal table we have to keep the record temporarily.
-The area where this record is kept is called as work area for the internal table.
-The area must have the same structure as that of internal table. An internal table consists of a body and an optional header line.
-Header line is a implicit work area for the internal table. It depends on how the internal table is declared that the itab will have the header line or not.
a) Data : itab like mara occurs 0 with header line.
table is with header line
b) Data: itab like mara occurs 0.
table is without header line</b>
regards,
srinivas
<b>*reward for useful answers*</b>

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Accessing a field from a structure with out header line

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