Dynamic Internal table field addition.

[Former Member]

Hi Gurus,

Can we add fields to Internal table dynamically during run time. If possible please tell me the procedure.

With regards,

Mahendiran.

[mvoros]

Hi,

you can create table with dynamic structure and use it in your program. Here is a beautiful [presentation|https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/media/uuid/77ea5c70-0701-0010-e190-c93da2025704] about generic programming in ABAP. There is also [eClass|https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/media/uuid/77ea5c70-0701-0010-e190-c93da2025704] for it.

Cheers

[Former Member]

Check this Link

[Former Member]

Hi....

Please find following sample code in which dynamic internal table is created for MARA table ( You can also use Types here ) and if field is MATNR or ERSDA then it will be added dynamically at runtime to Internal table.

REPORT  ZPP_FS_CHINTAN.

DATA : G_TABNAME TYPE STRING VALUE 'MARA',
       G_DREF TYPE REF TO DATA.

DATA : SMARATYPE TYPE REF TO CL_ABAP_STRUCTDESCR,
       TABLETYPE TYPE REF TO CL_ABAP_TABLEDESCR,
       COMP_TAB TYPE CL_ABAP_STRUCTDESCR=>COMPONENT_TABLE,
       NEW_COMP_TAB LIKE COMP_TAB,
       LINETYPE TYPE REF TO CL_ABAP_STRUCTDESCR,
       DREF TYPE REF TO DATA.

FIELD-SYMBOLS : <WA_COMP> LIKE LINE OF COMP_TAB,
                <FS_ITAB> TYPE ANY TABLE.

CREATE DATA G_DREF TYPE TABLE OF (G_TABNAME).

FIELD-SYMBOLS : <FS_STAB> TYPE STANDARD TABLE.

ASSIGN G_DREF->* TO <FS_STAB>.

SELECT * FROM MARA INTO TABLE <FS_STAB> WHERE MATNR = '0'.

SMARATYPE ?= CL_ABAP_TYPEDESCR=>DESCRIBE_BY_NAME('MARA').
COMP_TAB = SMARATYPE->GET_COMPONENTS( ).

LOOP AT COMP_TAB ASSIGNING <WA_COMP>.
  CASE <WA_COMP>-NAME.
    WHEN 'MATNR' or 'ERSDA'.
      APPEND <WA_COMP> TO NEW_COMP_TAB.
  ENDCASE.
ENDLOOP.

LINETYPE = CL_ABAP_STRUCTDESCR=>CREATE( NEW_COMP_TAB ).
TABLETYPE = CL_ABAP_TABLEDESCR=>CREATE(
P_LINE_TYPE = LINETYPE
P_TABLE_KIND = CL_ABAP_TABLEDESCR=>TABLEKIND_STD ).

CREATE DATA DREF TYPE HANDLE TABLETYPE.
ASSIGN DREF->* TO <FS_ITAB>.

SELECT * FROM MARA INTO CORRESPONDING FIELDS OF TABLE <FS_ITAB>.

Hope this will help u.

Regards,

Chintan.