topic Re: Extracting Field Name From a Variable in Application Development and Automation Discussions

Extracting Field Name From a Variable

Former Member — Thu, 11 Sep 2014 09:43:10 GMT

Hi Experts,

I have the following requirement from a client.

I have the name of the Field of Infotype 0008 var1 = 'LGA01' and var2 = 'BET01' stored in a local variable.

The requirement is such that I need to change the value stored in 'BET01'.

Any help would be appreciated.

Re: Extracting Field Name From a Variable

Former Member — Thu, 11 Sep 2014 09:48:16 GMT

Hi,

You may use Field Symbol like

data : <FS> type any.

var2 = 'BET01'.

Assign var2 to <FS>.

<FS> = change as required.

Re: Extracting Field Name From a Variable

Former Member — Thu, 11 Sep 2014 09:52:00 GMT

I have an internal table p0008.

It has a field BET01 which is stored in var1.

I need p0008-bet01 = Change required.

Regards

Re: Extracting Field Name From a Variable

former_member202818 — Thu, 11 Sep 2014 10:01:34 GMT

Still question is not clear..

var1 = 'BET01'.

concatenate 'P0008-' var1 into var2.

assign (var2) to <fs>.

<fs> = change required.

Re: Extracting Field Name From a Variable

former_member202818 — Thu, 11 Sep 2014 10:11:29 GMT

Are you struggling with repetitive structures?

then do this.

DATA: s_lgart(14) type c value 'GWA_0008-LGA ',

s_betrg(14) type c value 'GWA_0008-BET ',

index(2) type n.

FIELD-SYMBOLS: <fs_lgart> TYPE PA0008-LGA01,

<fs_betrg> TYPE PA0008-BET01.

do 40 times."Since 40 repetitive structures

index = sy-index. "01, 02, 03, 04...

s_lgart+12(2) = index. "GWA_0008-LGA01, GWA_0008-LGA02 ...

s_betrg+12(2) = index. "GWA_0008-BET01, GWA_0008-BET02...

assing (s_lgart) to <fs_betrg>.

assing (s_betrg) to <fs_lgart>.

"<fs_betrg> and <fs_lgart> now store respective values LGA01, BET01 (in first loop), LGA02,BET02 (in second) and so on...

enddo.

Re: Extracting Field Name From a Variable

Former Member — Thu, 11 Sep 2014 10:14:24 GMT

Hi Sreekanth,

How do I change the value in the Internal table??

I have only one row selected so that is not an issue. I need to change only the value found in BET01 present in internal table.

If change the value in Filed Symbols how will it reflect in my internal table??

Re: Extracting Field Name From a Variable

former_member202818 — Thu, 11 Sep 2014 10:23:48 GMT

for that you have to read each record. if only BET01 has to change.

FIELD-SYMBOL : <fs_0008> TYPE P0008.

LOOP AT p0008 ASSIGNING <fs_0008>.

<fs_0008>-BET01 = change required.

endloop.

Re: Extracting Field Name From a Variable

jrg_wulf — Thu, 11 Sep 2014 14:49:49 GMT

Hi Sagar,

since we're deep in field-symbols already, do what sreekanth already suggested only maky a combination of both. This would be like:

FIELD-SYMBOLS: <FS_P0008> type P0008, <FS_BETNN> type BETRG.

You will have to assign your workarea ( in my example, i assume it is P0008) to FS <FS_P0008>

LOOP AT P0008 ASSIGNING <FS_P0008> WHERE something.

ASSIGN COMPONENT (var2) OF STRUCTURE <FS_P0008> TO <FS_BETNN>

* make your changes to <FS_BETNN>

<FS_BETNN> = new_value. "DONE - BET01 has new value IN THE TABLE

ENDLOOP.

Remember whatever you do to a field-symbol, you do to the assigned variable or table-field.

In this example, you don't actually loop through your infotype table, but instead you move your memory-handle (that is, what a field-symbol is. Almost but not quite like a C-Pointer) over the lines of the table. Whichever line is linked to the field-symbol at that moment, will get the impact of change imediately.

The second filed-symbol gives you the flexibility to change BET02, BET03... as need be, by changing the value of var2.

Best regards - Jörg

Re: Extracting Field Name From a Variable

Former Member — Fri, 12 Sep 2014 03:49:52 GMT

Hi skreekanth,

The value of BET01 is also stored in a variable right.

So I can I do <fs_0008>-var1 = change required.

Will this make changes in the Internal table as well??

Re: Extracting Field Name From a Variable

former_member202818 — Fri, 12 Sep 2014 04:01:48 GMT

yes, I will explain the below statement..

LOOP AT p0008 ASSIGNING <fs_0008>. "For each loop <fs_0008>(like a pointer) will point to each record in p0008

<fs_0008>-BET01 = change required. "changing BET01 of current pointing record. After this statement internal table p0008 will get modified.

endloop.

Try this in debug mode. See the changes.

Re: Extracting Field Name From a Variable

Former Member — Mon, 15 Sep 2014 08:23:00 GMT

Hi Sreekanth,

I have the value of BET01 in a variable

example Var1 = BET01. It is a dynamic value

I have to fetch it and is stored in a variable. It can be anythinh like BET01 or BET02 or LGAT01

Then I have to change the value stored in that particular colum

Fro instance if

Var1 = BET02

itab-BET02 = 10.

I have to change the value in itab-Bet02 = new value

Regards

Re: Extracting Field Name From a Variable

aarif_baig — Mon, 15 Sep 2014 08:33:54 GMT

Hi Sagar,

Use Do varying it will help please refer to below link for example

DO 40 TIMES

VARYING LGART FROM GWA_0008-LGA01 NEXT GWA_0008-LGA02

VARYING BETRG FROM GWA_0008-BET01 NEXT GWA_0008-BET02.

" CODE

ENDDO.

ABAP Keyword Documentation

Thanks.

Re: Extracting Field Name From a Variable

Former Member — Mon, 15 Sep 2014 08:39:22 GMT

I want to know how to assign the column name that is stored in the variable to the internal table

Re: Extracting Field Name From a Variable

aarif_baig — Mon, 15 Sep 2014 08:55:14 GMT

This message was moderated.

Re: Extracting Field Name From a Variable

Former Member — Mon, 15 Sep 2014 09:55:12 GMT

Thanks a lot Experts