Column Index

[Former Member]

Hi,

I want to update one internal table based on column index.Is there any way to find out column index of an internal table?

[venkat_o]

HI,

I am 100% sure that we do not have any index to update column in itab.

Thanks

Venkat.O

[MarcinPciak]

Hi,

You can use the following:

parameters: pa_idx type i. "which column should be updated

data: begin of itab occurs 0,
              column1 type ..
              column2 type.
              columnN type...
         end of itab.

field-symbols: <column> type any.

loop at itab.
    do.
      assign component sy-index of structure itab to <column>.
      if sy-subrc = 0 .
          if sy-index = pa_idx.  "column index to update
              <column> = "give required value here to update the content of that column
          endif.
      else.
          exit.
       endif.
   enddo.
endloop.

Regards

Marcin

or shorter form without DO ... ENDDO

assign component pa_idx of structure itab to <column>.
  if sy-subrc = 0 .
     <column> = "give required value here to update the content of that column
  endif.

Edited by: Marcin Pciak on Jul 6, 2009 11:15 AM

[Former Member]

Here is the sample code with which you can find out the fields and other properties of your statically defined internal table

TYPE-POOLS : abap.

DATA: BEGIN OF tabl occurs 0,

mandt TYPE mara-mandt,

matnr TYPE mara-matnr,

ersda TYPE mara-ersda,

ernam TYPE mara-ernam,

laeda TYPE mara-laeda,

aenam TYPE mara-aenam,

vpsta TYPE mara-vpsta,

pstat TYPE mara-pstat,

lvorm TYPE mara-lvorm,

mtart TYPE mara-mtart,

mbrsh TYPE mara-mbrsh,

END OF tabl.

DATA : it_details TYPE abap_compdescr_tab,

wa_comp TYPE abap_compdescr.

DATA : ref_descr TYPE REF TO cl_abap_structdescr.

ref_descr ?= cl_abap_typedescr=>describe_by_data( tabl ).

it_details[] = ref_descr->components[].

loop at it_details into wa_comp.

write:/ wa_comp.

endloop.