dynamic itab creation

[kesavadas_thekkillath]

HI,

Suppose i have a itab1 with 7 columns.

i have one more itab2 with tow fields declared already.

using the seventh column of itab1 i need to create fields in itab2 for the distinct values in that field ....is it possible...

if so plz explain it in a simple way.

[Former Member]

Hi Mohammed,

Can you please explain in more detail about your requirement.

Regards,

Atish

[kesavadas_thekkillath]

actually this is to dynamically build the shortage list of materials for a vehicle.

first two columns consists of matnr,maktx,then all the columns must be dynamically built with vehicle names which could get into a table.

my requirement to bulid the field list starting from 3rd column in the same itab using the column values .

[Former Member]

Check below thread

Regards,

Atish

[gopi_narendra]

Check this blog

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

Regards

Gopi

[Former Member]

Can you create an internal table dynamically? (at run time)

Yes , you can create a Dynamic Internal table .Just chek out this program .

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.

-

---

REPORT ZCLUST1 .

• Example: how to create a dynamic internal table

• The dynamic internal table stucture

DATA: BEGIN OF STRUCT OCCURS 10,

FILDNAME(8) TYPE C,

ABPTYPE TYPE C,

LENGTH TYPE I,

END OF STRUCT.

• The dynamic program source table

DATA: BEGIN OF INCTABL OCCURS 10,

LINE(72),

END OF INCTABL.

DATA: LNG TYPE I, TYPESRTING(6).

• Sample dynamic internal table stucture

STRUCT-FILDNAME = 'field1'. STRUCT-ABPTYPE = 'c'. STRUCT-LENGTH = '6'.

APPEND STRUCT. CLEAR STRUCT.

STRUCT-FILDNAME = 'field2'. STRUCT-ABPTYPE = 'd'.

APPEND STRUCT. CLEAR STRUCT.

STRUCT-FILDNAME = 'field3'. STRUCT-ABPTYPE = 'i'.

APPEND STRUCT. CLEAR STRUCT.

• Create the dynamic internal table definition in the dyn. program

INCTABL-LINE = 'program zdynpro.'. APPEND INCTABL.

INCTABL-LINE = 'data: begin of dyntab occurs 10,'. APPEND INCTABL.

LOOP AT STRUCT.

INCTABL-LINE = STRUCT-FILDNAME.

LNG = STRLEN( STRUCT-FILDNAME ).

IF NOT STRUCT-LENGTH IS INITIAL .

TYPESRTING(1) = '('.

TYPESRTING+1 = STRUCT-LENGTH.

TYPESRTING+5 = ')'.

CONDENSE TYPESRTING NO-GAPS.

INCTABL-LINE+LNG = TYPESRTING.

ENDIF.

INCTABL-LINE+15 = 'type '.

INCTABL-LINE+21 = STRUCT-ABPTYPE.

INCTABL-LINE+22 = ','.

APPEND INCTABL.

ENDLOOP.

INCTABL-LINE = 'end of dyntab. '.

APPEND INCTABL.

• Create the code processes the dynamic internal table

INCTABL-LINE = ' '. APPEND INCTABL.

INCTABL-LINE = 'dyntab-field1 = ''aaaaaa''.'. APPEND INCTABL.

INCTABL-LINE = 'dyntab-field1 = ''19970814''.'. APPEND INCTABL.

INCTABL-LINE = 'dyntab-field1 = 1.'. APPEND INCTABL.

INCTABL-LINE = 'append dyntab.'. APPEND INCTABL.

INCTABL-LINE = ' '. APPEND INCTABL.

INCTABL-LINE = 'loop at dyntab.'. APPEND INCTABL.

INCTABL-LINE = 'write: / dyntab.'. APPEND INCTABL.

INCTABL-LINE = 'endloop.'. APPEND INCTABL.

• Create and run the dynamic program

INSERT REPORT 'zdynpro'(001) FROM INCTABL.

SUBMIT ZDYNPRO.

-

---

or Just try out this simpler dynamic internal tables

DATA: itab TYPE STANDARD TABLE OF spfli,

wa LIKE LINE OF itab.

DATA: line(72) TYPE c,

list LIKE TABLE OF line(72).

START-OF-SELECTION.

*line = ' CITYFROM CITYTO '.

line = ' AIRPTO '.

APPEND line TO list.

SELECT DISTINCT (list)

INTO CORRESPONDING FIELDS OF TABLE itab

FROM spfli.

IF sy-subrc EQ 0.

LOOP AT itab INTO wa.

• WRITE: / wa-cityfrom, wa-cityto.

WRITE 😕 wa-airpto.

ENDLOOP.

ENDIF.

[seshatalpasai_madala]

Hi,

Use the following data.

DATA: lt_comp TYPE cl_abap_structdescr=>component_table.

DATA: ls_comp LIKE LINE OF lt_comp.

DATA: lr_rtti_struc TYPE REF TO cl_abap_structdescr.

DATA: wa_data type ref to data,

table_data type ref to data.

FIELD-SYMBOLS: <fs_data> TYPE ANY.

FIELD-SYMBOLS: <fs_table> TYPE STANDARD TABLE.

LOOP AT it_elements INTO wa_element.

ls_comp-name = wa_element.

CONDENSE ls_comp-name NO-GAPS.

ls_comp-type = cl_abap_elemdescr=>get_string( ).

APPEND ls_comp TO lt_comp.

ENDLOOP.

CALL METHOD cl_abap_structdescr=>create

EXPORTING

p_components = lt_comp

p_strict = abap_false

RECEIVING

p_result = lr_rtti_struc.

CREATE DATA wa_data TYPE HANDLE lr_rtti_struc.

ASSIGN wa_data->* TO <fs_data>.

CREATE DATA table_data LIKE STANDARD TABLE OF <fs_data>.

ASSIGN table_data->* TO <fs_table>.

Regards,

Sesh