ABAP Select data from SAP table VBKAKOM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VBKAKOM table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to VBKAKOM. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the VBKAKOM table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_VBKAKOM TYPE STANDARD TABLE OF VBKAKOM,
      WA_VBKAKOM TYPE VBKAKOM,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <VBKAKOM> TYPE VBKAKOM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VBKAKOM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VBKAKOM
  INTO TABLE IT_VBKAKOM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VBKAKOM
*  INTO TABLE @DATA(IT_VBKAKOM2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_VBKAKOM INDEX 1 INTO DATA(WA_VBKAKOM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VBKAKOM ASSIGNING <VBKAKOM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VBKAKOM>-REFOBJECTLOGSYS = 1.
<VBKAKOM>-REFOBJECTTYPE = 1.
<VBKAKOM>-REFOBJECTKEY = 1.
<VBKAKOM>-REFDOCTYPE = 1.
<VBKAKOM>-REFERNAM = 1.

ENDLOOP.

LOOP AT IT_VBKAKOM INTO WA_VBKAKOM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VBKAKOM-REFRELTYPE, sy-vline,
  WA_VBKAKOM-VBELN, sy-vline,
  WA_VBKAKOM-KTAAR, sy-vline,
  WA_VBKAKOM-VKORG, sy-vline,
  WA_VBKAKOM-VTWEG, sy-vline,
  WA_VBKAKOM-SPART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VBKAKOM you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_VBKAKOM TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_VBKAKOM INTO WA_VBKAKOM.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field REFOBJECTLOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VBKAKOM-REFOBJECTLOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKAKOM-REFOBJECTLOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VBKAKOM-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKAKOM-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARVW, internal->external for field PARVW_BPARNR
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_VBKAKOM-PARVW_BPARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKAKOM-PARVW_BPARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BPARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VBKAKOM-BPARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKAKOM-BPARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARVW, internal->external for field PARVW_PARNR
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_VBKAKOM-PARVW_PARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKAKOM-PARVW_PARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field KTEXT_MC_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_VBKAKOM-KTEXT_MC_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKAKOM-KTEXT_MC_LANGU.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_VBKAKOM_STR, 
REFOBJECTLOGSYS TYPE STRING,
REFOBJECTTYPE TYPE STRING,
REFOBJECTKEY TYPE STRING,
REFDOCTYPE TYPE STRING,
REFERNAM TYPE STRING,
REFRELTYPE TYPE STRING,
VBELN TYPE STRING,
KTAAR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KTANR TYPE STRING,
PARVW_BPARNR TYPE STRING,
BPARNR TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
PARVW_PARNR TYPE STRING,
PARNR TYPE STRING,
KTABG TYPE STRING,
KTAEN TYPE STRING,
KTABT TYPE STRING,
KTAET TYPE STRING,
KTAGR TYPE STRING,
KTAST TYPE STRING,
KTAER TYPE STRING,
KTAEB TYPE STRING,
KTAFK TYPE STRING,
KTADA TYPE STRING,
KTEXT TYPE STRING,
KTEXT_MC_LANGU TYPE STRING,
KTA01 TYPE STRING,
KTA02 TYPE STRING,
KTA03 TYPE STRING,
KTA04 TYPE STRING,
KTA05 TYPE STRING,
KTA06 TYPE STRING,
KTA07 TYPE STRING,
KTA08 TYPE STRING,
KTA09 TYPE STRING,
KTA10 TYPE STRING,
TXT_KONSE TYPE STRING,
DIRECTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VBKAKOM_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_VBKAKOM_STR-REFOBJECTLOGSYS sy-vline 
WA_VBKAKOM_STR-REFOBJECTTYPE sy-vline 
WA_VBKAKOM_STR-REFOBJECTKEY sy-vline 
WA_VBKAKOM_STR-REFDOCTYPE sy-vline 
WA_VBKAKOM_STR-REFERNAM sy-vline 
WA_VBKAKOM_STR-REFRELTYPE sy-vline 
WA_VBKAKOM_STR-VBELN sy-vline 
WA_VBKAKOM_STR-KTAAR sy-vline 
WA_VBKAKOM_STR-VKORG sy-vline 
WA_VBKAKOM_STR-VTWEG sy-vline 
WA_VBKAKOM_STR-SPART sy-vline 
WA_VBKAKOM_STR-KTANR sy-vline 
WA_VBKAKOM_STR-PARVW_BPARNR sy-vline 
WA_VBKAKOM_STR-BPARNR sy-vline 
WA_VBKAKOM_STR-VKBUR sy-vline 
WA_VBKAKOM_STR-VKGRP sy-vline 
WA_VBKAKOM_STR-PARVW_PARNR sy-vline 
WA_VBKAKOM_STR-PARNR sy-vline 
WA_VBKAKOM_STR-KTABG sy-vline 
WA_VBKAKOM_STR-KTAEN sy-vline 
WA_VBKAKOM_STR-KTABT sy-vline 
WA_VBKAKOM_STR-KTAET sy-vline 
WA_VBKAKOM_STR-KTAGR sy-vline 
WA_VBKAKOM_STR-KTAST sy-vline 
WA_VBKAKOM_STR-KTAER sy-vline 
WA_VBKAKOM_STR-KTAEB sy-vline 
WA_VBKAKOM_STR-KTAFK sy-vline 
WA_VBKAKOM_STR-KTADA sy-vline 
WA_VBKAKOM_STR-KTEXT sy-vline 
WA_VBKAKOM_STR-KTEXT_MC_LANGU sy-vline 
WA_VBKAKOM_STR-KTA01 sy-vline 
WA_VBKAKOM_STR-KTA02 sy-vline 
WA_VBKAKOM_STR-KTA03 sy-vline 
WA_VBKAKOM_STR-KTA04 sy-vline 
WA_VBKAKOM_STR-KTA05 sy-vline 
WA_VBKAKOM_STR-KTA06 sy-vline 
WA_VBKAKOM_STR-KTA07 sy-vline 
WA_VBKAKOM_STR-KTA08 sy-vline 
WA_VBKAKOM_STR-KTA09 sy-vline 
WA_VBKAKOM_STR-KTA10 sy-vline 
WA_VBKAKOM_STR-TXT_KONSE sy-vline 
WA_VBKAKOM_STR-DIRECTION sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.