topic can we access a field in an internal table field using variable in Application Development and Automation Discussions

can we access a field in an internal table field using variable

Former Member — Wed, 19 Mar 2008 06:54:00 GMT

Hi all,

I have a requirement like this..

Let we have an internal table with fields d01, d02 and so on

we build this field name at runtime like in a loop

I can make the VAR value to d01 at runtime like concatenate 'd' syindex into VAR

then we assign a value to that field like itab-d01 at runtime

now I want to assign itab-VAR = xyz

here it shoud take itab-d01 = xyz as VAR = d01

hope explained the requirement properly?

Please help me in this issue.

Regards,

Ravi

Re: can we access a field in an internal table field using variable

Former Member — Wed, 19 Mar 2008 07:02:39 GMT

Hi,

u an do like this.


  DATA: BEGIN OF STR,
          A VALUE 'a',
          B VALUE 'b',
          C VALUE 'c',
          D VALUE 'd',
        END   OF STR,
        CN(5) VALUE 'D'.
  FIELD-SYMBOLS <FS> TYPE ANY.
  DO 3 TIMES.
    ASSIGN COMPONENT SY-INDEX OF
           STRUCTURE STR TO <FS>.
    IF SY-SUBRC <> 0. EXIT. ENDIF.
    WRITE <FS>.
  ENDDO.
  ASSIGN COMPONENT CN OF STRUCTURE STR TO <FS>.
  WRITE <FS>.

   move '1' to <fs>.
  WRITE str-d.

your case.


  DATA: BEGIN OF STR OCCURS 0,
          d01(5),
          d02(5),
          d03(5),
          d04(5),
        END   OF STR,
        CN(5) VALUE 'd04'.
  DATA:ind(2).
  FIELD-SYMBOLS <FS> TYPE ANY.

  DO 4 TIMES.
    ASSIGN COMPONENT SY-INDEX OF
           STRUCTURE STR TO <FS>.
    IF SY-SUBRC <> 0.
      EXIT.
    ENDIF.
    ind = sy-index.
    CONCATENATE 'val' ind into <FS>.
  ENDDO.
  APPEND str.

  DO 4 TIMES.
    ASSIGN COMPONENT SY-INDEX OF
               STRUCTURE STR TO <FS>.
    write: <fs>.
  ENDDO.

    ASSIGN COMPONENT CN OF STRUCTURE STR TO <FS>.
    WRITE:/ <FS>.

rgds,

bharat.

Re: can we access a field in an internal table field using variable

Former Member — Wed, 19 Mar 2008 07:33:25 GMT

Hi Bharat,

Thank you for the reply.

Hope that I have not explained the requirement well,

Please check the program below


data: begin of itab occurs 0,
  	d01 type char2,
	d02 type char2,
  	d03 type char2,
       end of itab.

data: begin of jtab occurs 0,
	item type num2,
	value type char2,
       end of jtab.


jtab-item = 01.
jtab-value = 'na'.
append jtab.

jtab-item = 02.
jtab-value = 'nb'.
append jtab.

jtab-item = 03.
jtab-value = 'zy'.
append jtab.

do 3 times.
  concatenate 'd' sy-index into field.

  read table jtab with key item = sy-index.
    if sy-subrc = 0.
      itab-(field) = jtab-value. "<< here I want actually to assign to d01, d02 and to d03.
    endif.
enddo.

append itab.

* here actually 3 records in jtab will create only one record in itab.

Like this I want to assign the values dynamically to fill itab from the values of jtab.

work around to this will be


data: begin of itab occurs 0,
	d01 type char2,
	d02 type char2,
	d03 type char2,
       end of itab.

data: begin of jtab occurs 0,
	item type num2,
	value type char2,
       end of jtab.


jtab-item = 01.
jtab-value = 'na'.
append jtab.

jtab-item = 02.
jtab-value = 'nb'.
append jtab.

jtab-item = 03.
jtab-value = 'zy'.
append jtab.

do 3 times.

  concatenate 'd' sy-index into field.
  read table jtab with key item = sy-index.
  if sy-subrc = 0.
    case sy-index.
      when '01'.
        itab-d01 = jtab-value. 
      when '02'.
        itab-d02 = jtab-value. 
      when '03'.
        itab-d03 = jtab-value. 
    endcase.

  endif.
enddo.

append itab.

In the above case only 3 fields are there if more fields are there it will be cumbersome to handle all the situations by code.

Hope now you understood the requierement.

Regards,

Ravi