Displaying internal table data with out using Wor Area & Header Line?

[former_member209120]

Dear experts,

Why we need to use work area to display internal table, why not with out using work area or header line?

With work are WA it works.

Data : it_sflight type TABLE OF sflight,
        wa_sflight type sflight.

select * from sflight into table it_sflight up to 10 rows.
Loop at it_sflight into wa_sflight.
   write 😕 wa_sflight-carrid.
endloop.


Why this code not works

Data : it_sflight type TABLE OF sflight. 
select * from sflight into table it_sflight up to 10 rows.
write 😕 it_sflight-carrid.

Thanks in advance....

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Message was edited by: Suhas Saha

[venkateswaran_k]

If you OCCURS clause, probably you may not use the Work Area.

Example:

DATA BEGIN OF it_sfligtht OCCURS n.

  ... include the sflight structure here.....

DATA END OF it_sflight

[philipdavy]

Hi,

If we use begin of ...occurs... there is an implicit work area which is being created with the same name as that of the internal table.

Regards,

Philip.

[Former Member]

Hi Ramesh,

In all programming languages using variable only they will display the data.

Data should be stored/pointed in variable. Workarea is collection of data (i.e structure will hold the many values).

Why this code not works

Data : it_sflight type TABLE OF sflight. 
select * from sflight into table it_sflight up to 10 rows.
write 😕 it_sflight-carrid.

WRITE keyword functionality will be programmed in kernel level by SAP it will display only variable/structure type value, but it_sflight is a table type.

As of now in ABAP language there is no keyword to display the all the values from internal table.

Hope this will be helpful for you

Regards,

Prasanna

[NAeda]

Hi Ramesh,

Please go throgh these links get the concepts of Internal table and work area.

http://help.sap.com/saphelp_nw2004s/helpdata/EN/fc/eb367a358411d1829f0000e829fbfe/content.htm

http://scn.sap.com/thread/501035

Thank you.

[philipdavy]

The purpose of internal table(body) is to hold the data. The writing, modifying, inserting, deleting all operations are carried out through the work area or header line.

Regards,

Philip.

[Former Member]

Hi Ramesh,

WRITE statement writes the content of the data object dobj to the current page of the current list in the list buffer.

it_sflight-carrid does not refer to the data object, instead refers to the table's field.

In case you define the table it_sflight WITH HEADER LINE then a header it_slight is created, which if contains any value would be displayed.

But in this case, the content it_sflight is filled in the table and nothing is filled in the header area yet and hence nothing will be displayed in the WRITE statement.

Data : it_sflight type TABLE OF sflight WITH HEADER LINE.

select * from sflight into table it_sflight up to 10 rows.

READ TABLE it_sflight WITH INDEX 1.

write 😕 it_sflight-carrid.

In this case, first record of it_sflight is updated into the header which displays that records value.

Hope the explanation helps.

Regards,

Adithi

[Former Member]

Hi Ramesh,

Any table will need to be processed from start to end to read each record at a time.

Well you can use SELECT .. ENDSELECT to write data without itab.

Like:

DATA : wa_sflight type sflight. 
select * from sflight into wa_sflight up to 10 rows.
write 😕 wa_sflight-carrid.

endselect.

But this will do a LOOP ENDLOOP kind of iteration at database level.

Regards