topic Re: internal table in Application Development and Automation Discussions

internal table

Former Member — Wed, 28 Feb 2007 14:47:14 GMT

what is the diff between with header and without header ?

Re: internal table

Former Member — Wed, 28 Feb 2007 14:49:16 GMT

http://help.sap.com/saphelp_470/helpdata//EN/fc/eb367a358411d1829f0000e829fbfe/frameset.htm

Message was edited by:

Jacek Slowikowski

Re: internal table

Former Member — Wed, 28 Feb 2007 14:51:09 GMT

Hi,

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.

Regards,

Ferry Lianto

Re: internal table

former_member187255 — Wed, 28 Feb 2007 14:53:53 GMT

Balu,

WITH HEADER LINE creates a field with the same name as the internal table and the same type as the line type of the internal table.

Meaning it creates a work area of the line type of the internal table..

Example

DATA: ITAB LIKE MARA WITH HEADER LINE.

**Now you can use ITAB as a structure also..

**meaning.

ITAB-MATNR = 'ABCD'.

IF ITAB-MATNR = 'ABCD'.

True

ENDIF.

If you don't give header line..then the workarea is not created..

Example

DATA: ITAB LIKE MARA OCCURS 0.

DATA: WA LIKE ITAB.

To access the data you have to create another workarea ..

READ TABLE ITAB INTO WA INDEX 1.

IF WA-MATNR = 'ABCD'.

...

ENDIF.

Regards.