Declare Internal Table dynamically

[Former Member]

Hi Expart,

How can I declare Internal Table dynamically by using the table name as input parameter in the selection screen.

like...

data i_table type standard table of (p1) . (dynamically taken by the input parameter).

Please Advice.

[Former Member]

hi,

Check the link for step by step guidence of creation of internal table dynamicaly.

http://www.sapfans.com/forums/viewtopic.php?p=107594

regards,

anirban

[former_member254848]

Hi,

Please find the sample program to create dynamic internal table

type-pools : abap. 
  field-symbols: <dyn_table> type standard table, 
               <dyn_wa>, 
               <dyn_field>. 
  data: dy_table type ref to data, 
      dy_line  type ref to data, 
      xfc type lvc_s_fcat, 
      ifc type lvc_t_fcat. 
  selection-screen begin of block b1 with frame. 
parameters: p_table(30) type c default 'T001'. 
selection-screen end of block b1. 
  start-of-selection. 
    perform get_structure. 
  perform create_dynamic_itab.      **********Creates a dyanamic internal table********** 
  perform get_data. 
  perform write_out. 
  form get_structure. 
  data : idetails type abap_compdescr_tab, 
       xdetails type abap_compdescr. 
  data : ref_table_des type ref to cl_abap_structdescr. 
  * Get the structure of the table. 
  ref_table_des ?=  
      cl_abap_typedescr=>describe_by_name( p_table ). 
  idetails[] = ref_table_des->components[]. 
    loop at idetails into xdetails. 
    clear xfc. 
    xfc-fieldname = xdetails-name . 
    xfc-datatype = xdetails-type_kind. 
    xfc-inttype = xdetails-type_kind. 
    xfc-intlen = xdetails-length. 
    xfc-decimals = xdetails-decimals. 
    append xfc to ifc. 
  endloop. 
  endform. 
  form create_dynamic_itab. 
  * Create dynamic internal table and assign to FS 
  call method cl_alv_table_create=>create_dynamic_table 
               exporting 
                  it_fieldcatalog = ifc 
               importing 
                  ep_table        = dy_table. 
    assign dy_table->* to <dyn_table>. 
  * Create dynamic work area and assign to FS 
  create data dy_line like line of <dyn_table>. 
  assign dy_line->* to <dyn_wa>. 
  endform. 
    
  form get_data. 
  * Select Data from table. 
  select * into table <dyn_table> 
             from (p_table). 
  endform. 
   Write out data from table. 
  loop at <dyn_table> into <dyn_wa>. 
    do. 
      assign component  sy-index   
         of structure <dyn_wa> to <dyn_field>. 
      if sy-subrc <> 0. 
        exit. 
      endif. 
      if sy-index = 1. 
        write:/ <dyn_field>. 
      else. 
        write: <dyn_field>. 
      endif. 
    enddo. 
  endloop. 

regards

Saravanan

[Former Member]

@ Saravanan

Dont copy paste the code, From some one else post. If it is your post you can copy it. Try to Refer the Link.

[Former Member]

hi,

Refer to the link.

regards

Sumit Agarwal

[Former Member]

Hi,

check out this link it may help you a lot with easy understanding step by step.

http://saptechnical.com/Tutorials/ABAP/DynamicInternaltable/DynamicInternalTable.htm

[Former Member]

Hi Avik,

Check these links for examples of dynamic creation of internal table:

http://www.sap-img.com/ab030.htm

http://sample-code-abap.blogspot.com/2008/07/sap-abap-dynamic-internal-table-and.html

Hope this helps you.

Regards,

Chandra Sekhar

[Former Member]

One such example.

REPORT  zdynamic.
 
FIELD-SYMBOLS: <l_table> TYPE table,
<l_line> TYPE ANY,
<l_field> TYPE ANY.
 
DATA: is_lvc_cat TYPE lvc_s_fcat,
      it_lvc_cat TYPE lvc_t_fcat.
 
DATA: new_table TYPE REF TO data,
      new_line  TYPE REF TO data.
 
 
START-OF-SELECTION.
 
  is_lvc_cat-fieldname = 'KUNNR'.
  APPEND is_lvc_cat TO it_lvc_cat.
 
  is_lvc_cat-fieldname = 'NAME1'.
  APPEND is_lvc_cat TO it_lvc_cat.
 
  CALL METHOD cl_alv_table_create=>create_dynamic_table
    EXPORTING
      it_fieldcatalog = it_lvc_cat
    IMPORTING
      ep_table        = new_table.
 
*Create a new Line with the same structure of the table.
  ASSIGN new_table->* TO <l_table>.
  CREATE DATA new_line LIKE LINE OF <l_table>.
  ASSIGN new_line->* TO <l_line>.
 
 
  DO 2 TIMES.
    ASSIGN COMPONENT 'KUNNR' OF STRUCTURE <l_line> TO <l_field>.
    <l_field> = sy-index.
 
    ASSIGN COMPONENT 'NAME1' OF STRUCTURE <l_line> TO <l_field>.
    <l_field> = 'A'.
    INSERT <l_line> INTO TABLE <l_table>.
  ENDDO.
 
  LOOP AT <l_table> INTO <l_line>.
    WRITE:/ <l_line>.
  ENDLOOP.
 
  READ TABLE <l_table> INTO <l_line> INDEX 2.
  <l_line>+10(2) = 'B'.
  MODIFY <l_table> FROM <l_line> INDEX 2.
 
 
  LOOP AT <l_table> INTO <l_line>.
    WRITE:/ <l_line>.
  ENDLOOP.

Regards

Vijay Babu Dudla

[Former Member]

hi

use this links

Cheers

Snehi

Edited by: snehi chouhan on Jul 28, 2008 3:07 PM

[Former Member]

Hi Avik.

I would like to suggest a few references,

[SDN Weblog - Standard Reference for Dynamic Internal Tables and Structures by Rich Heilman - ABAP|https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/2071] [original link is broken] [original link is broken] [original link is broken];

[SDN - Reference for Creating Dynamic Internal Tables|/thread/418716 [original link is broken];

[SDN Wiki - Code Snippets - Standard Reference for Dynamic Internal Table|https://www.sdn.sap.com/irj/sdn/wiki?path=/display/snippets/dynamic%2binternal%2btable]

Hope that's usefull.

Good Luck & Regards.

Harsh Dave