Dynamic Internal Tables

[Former Member]

Hi everybody,

I have a report in PS, in which based on the project I need to increase the number of columns. Thst is, I have to display the sheduled date, start date & its description under the porject name in one column. If the project is new , then I have to display the detailes in a new column. It may have n number of projects. How to do? Is it possible?

Thanks.

G.Vijayakumar

[Former Member]

Take a look at these weblogs which talk about dynamic internal tables

/people/ravikumar.allampallam/blog/2005/05/31/expand-the-list-of-columns-in-a-report-dynamically

/people/subramanian.venkateswaran2/blog/2004/11/19/dynamic-internal-table

/people/rich.heilman2/blog/2005/07/27/dynamic-internal-tables-and-structures--abap

Regards,

Ravi

Note : Please mark the helpful answers

[hymavathi_oruganti]

to build a dynamic internal table,

see the following exmaple

suppose itab has fields A, B, C.

SO ITAB-C HAS THE VALUES OF C. NOW WE WANT A TABLE WITH VALUES OF C RIGHT!!.

NOW BUILD A FIELDCATALOG LIKE BELOW.

LOOP AT ITAB.

LS_FIELDCAT-FIELDNAME = ITAB-C.

LS_FIELDCAT-COL_TEXT = ITAB_C.

APPEND LS_FIELDCAT TO LT_FIELDCAT.

ENDLOOP.

DATA: DREF TYPE REF TO DATA.

FIELD-SYMBOLS: <TEMP_TAB> TYPE ANY.

CALL METHOD CL_ALV_TABLE_CREATE=>CREATE_DYNAMIC_TABLE

EXPORTING

IT_FIELDCATALOG = LT_LVCFIELDCAT

IMPORTING

EP_TABLE = DREF.

ASSIGN dref->* TO <TEMP_TAB>.

<TEMP_TAB> IS THE REQUIRED DYNAMIC INTERNAL TABLE.

NOW IF U WANT TO FILL THE DYNAMIC INTERNAL TABLE.

DO AS BELOW..

DATA: WA_DREF TYPE REF TO DATA.

FIELD-SYMBOLS: <WA_TAB> TYPE ANY.

CREATE DATA WA_DREF LIKE LINE OF <TEMP_TAB>.

ASSIGN WA_DREF->* TO <WA_TAB>.

FIELD-SYMBOLS: <FS1>, <FS2>.

LOOP AT ITAB.

ASSIGN COMPONENT ITAB-C OF STRUCTURE <WA_TAB> TO <FS1>.

<FS1> = {SOME VALUE}.

APPEND <WA_TAB> TO <TEMP_TAB>.

ENDLOOP.

[Former Member]

Hi Vijaykumar,

follow these steps to create dynamic internal tables.

1. Declare an internal table (say lt_fcat) of type lvc_t_fcat.

2. populate lt_fcat with the information about the fields you want in your dynamic internal table.

3. declare a data reference fo type data (say lt_xtab).

4. call the following method:

CALL METHOD cl_alv_table_create=>create_dynamic_table

EXPORTING

it_fieldcatalog = lt_fcat

IMPORTING

ep_table = lt_xtab

EXCEPTIONS

generate_subpool_dir_full = 1

OTHERS = 2.

5. Declare a field symbol <FS> and use the following statement :

ASSIGN LT_XTAB->* TO <FS>.

Now you can use the field symbol <FS> as an internal table with that many fields, as many records were there in lt_fcat.

Hope this solves your problem.

Rgds,

Deb.

[Former Member]

Hi Vijaykumar,

try this..

=====================================

REPORT zmaschl_create_data_dynamic .

TYPE-POOLS: slis.

DATA: it_fcat TYPE slis_t_fieldcat_alv,

is_fcat LIKE LINE OF it_fcat.

DATA: it_fieldcat TYPE lvc_t_fcat,

is_fieldcat LIKE LINE OF it_fieldcat.

DATA: new_table TYPE REF TO data.

DATA: new_line TYPE REF TO data.

FIELD-SYMBOLS: <l_table> TYPE ANY TABLE,

<l_line> TYPE ANY,

<l_field> TYPE ANY.

• Build fieldcat

CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'

EXPORTING

i_structure_name = 'SYST'

CHANGING

ct_fieldcat = it_fcat[].

LOOP AT it_fcat INTO is_fcat WHERE NOT reptext_ddic IS initial.

MOVE-CORRESPONDING is_fcat TO is_fieldcat.

is_fieldcat-fieldname = is_fcat-fieldname.

is_fieldcat-ref_field = is_fcat-fieldname.

is_fieldcat-ref_table = is_fcat-ref_tabname.

APPEND is_fieldcat TO it_fieldcat.

ENDLOOP.

• Create a new Table

CALL METHOD cl_alv_table_create=>create_dynamic_table

EXPORTING

it_fieldcatalog = it_fieldcat

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>.

• Test it...

DO 30 TIMES.

ASSIGN COMPONENT 'SUBRC' OF STRUCTURE <l_line> TO <l_field>.

<l_field> = sy-index.

INSERT <l_line> INTO TABLE <l_table>.

ENDDO.

LOOP AT <l_table> ASSIGNING <l_line>.

ASSIGN COMPONENT 'SUBRC' OF STRUCTURE <l_line> TO <l_field>.

WRITE <l_field>.

ENDLOOP.

Change the fields as per your requirement.

Regards,

Mukesh Kumar

[Former Member]

Hi Vijay,

Follow the steps to create a dynamic table.

1. Create your field catalog either manually or automatically using the function module, LVC_FIELDCATALOG_MERGE. Add more rows to the field catalog table (T_FIELDCAT) at run time.

2. Use the field catalog to create a table dynamically using the method below.

DATA: T_OUTPUT TYPE REF TO DATA

FIELD-SYMBOLS: <T_OUTPUT> TYPE TABLE

Call Method CL_ALV_TABLE_CREATE->CREATE_DYNAMIC_TABLE

Exporting

IT_FIELDCATALOG = T_FIELDCAT

Importing

EP_TABLE = T_OUTPUT

ASSIGN T_OUTPUT->* TO <T_OUTPUT>.

Now the field symbol <T_OUTPUT> is pointing to an output table of the structure that contains the fields which were determined at runtime. Now fill this table with the data and pass <T_OUTPUT> to the method SET_TABLE_FOR_FIRST_DISPLAY and the ALV grid should show the data properly.

Here is an example.

* the content of itab will be fields of the new table
loop at itab1 into wa1.
  Gs_FIELDCAT-TABNAME     = 'itab2'.
  GS_FIELDCAT-FIELDNAME = wa1-packid.
  GS_FIELDCAT-OUTPUTLEN = 2.
  GS_FIELDCAT-KEY         = space.
  GS_FIELDCAT-SELTEXT_L = wa1-packid.
  GS_FIELDCAT-COL_POS     =  1.
  GS_FIELDCAT-JUST        = 'L'.

  APPEND GS_FIELDCAT TO GT_FIELDCAT.
endloop.

LOOP AT GT_FIELDCAT INTO GS_FIELDCAT.

    MOVE-CORRESPONDING GS_FIELDCAT TO ls_fcat.

    APPEND ls_fcat TO lt_fieldcat.

  ENDLOOP.



CALL METHOD cl_alv_table_create=>create_dynamic_table

                     EXPORTING it_fieldcatalog = lt_fieldcat

                     IMPORTING ep_table = t_output.

I hope this helps.

Regards,

Kinshuk