topic Re: Determine ITAB column dynamically in Application Development and Automation Discussions

Determine ITAB column dynamically

VenuAnumayam — Mon, 21 Dec 2009 21:26:23 GMT

Hello Experts,

I have an internal table like this:

types: begin of ty_mat,
            matnr type manr,
            descr type maktx,
            col_1 type mhdlg,
            col_2 type mddlg,
            col_3 type mhdlg,
            col_4 type mhdlg,
            col_5 type mhdlg,
          end of ty_mat.

data: t_mat type standard table of ty_mat,
      wa_mat like line of t_mat.

data: l_col(6) type c,
      l_var type mhdlg.

T_MAT has values like this:

MATNR DESCR COL_1 COL_2 COL_3 COL_4 COL_5
1235  ABADFC 0     0     0      0      0

For eg, During runtime, L_VAR value is determined as 5000 and L_COL value as COL_5 .

Now I have to update the internal table T_MAT like this:

MATNR DESCR COL_1 COL_2 COL_3 COL_4 COL_5
1235  ABADFC 0     0     0      0    5000

The value of L_VAR and L_COL changes dynamically all the times. Should I use the field-symbols? Can you please suggest how to code for that?

Thanks a lot.

Edited by: ravi kumar on Dec 21, 2009 2:27 PM

Re: Determine ITAB column dynamically

Former Member — Mon, 21 Dec 2009 21:48:27 GMT

Yes, you would use field-symbols

I supposse you are using wa_mat as the work area for t_mat and you know exactly which index you are going to modify

In that case it would be something like this


assign component L_COL of structure wa_mat to <fs>.
<fs> = l_var.
modify t_mat from wa_mat index whatver.

But can you be more specific? I´m pretty sure what you are trying to achieve would be easier if you assign a field-symbols to the line in t_mat you want to modify instead of using a work area

Re: Determine ITAB column dynamically

Former Member — Mon, 21 Dec 2009 21:49:42 GMT

Yes, use field symbols.

Assuming your work area is populated with the correct line, following code should help.


field-symbols: <fs_field> type any.

assign component (L_COL) of wa_mat to <fs_field>

<fs_field> = l_var.

Now wa_mat-col_5 should have the value of 5000. I haven't tested the above code - so test it before relying on it.

Re: Determine ITAB column dynamically

VenuAnumayam — Mon, 21 Dec 2009 22:03:13 GMT

Thanks a lot. I knew the code until

assign component L_COL of structure wa_mat to <fs>

Didn't know how to pass the value after that.