ABAP Select data from SAP table VBKAKOM_UPDATE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VBKAKOM_UPDATE 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_UPDATE. 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_UPDATE 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_UPDATE TYPE STANDARD TABLE OF VBKAKOM_UPDATE,
      WA_VBKAKOM_UPDATE TYPE VBKAKOM_UPDATE,
      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_UPDATE> TYPE VBKAKOM_UPDATE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VBKAKOM_UPDATE
*  INTO TABLE @DATA(IT_VBKAKOM_UPDATE2).
*--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_UPDATE INDEX 1 INTO DATA(WA_VBKAKOM_UPDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VBKAKOM_UPDATE>-VKBUR = 1.
<VBKAKOM_UPDATE>-VKGRP = 1.
<VBKAKOM_UPDATE>-PARVW_PARNR = 1.
<VBKAKOM_UPDATE>-PARNR = 1.
<VBKAKOM_UPDATE>-KTABG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VBKAKOM_UPDATE-KTAEN, sy-vline,
  WA_VBKAKOM_UPDATE-KTABT, sy-vline,
  WA_VBKAKOM_UPDATE-KTAET, sy-vline,
  WA_VBKAKOM_UPDATE-KTAGR, sy-vline,
  WA_VBKAKOM_UPDATE-KTAST, sy-vline,
  WA_VBKAKOM_UPDATE-KTAER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VBKAKOM_UPDATE 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_UPDATE 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_UPDATE INTO WA_VBKAKOM_UPDATE.


*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 PARVW, internal->external for field PARVW_PARNR
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_VBKAKOM_UPDATE-PARVW_PARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKAKOM_UPDATE-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_UPDATE-KTEXT_MC_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKAKOM_UPDATE-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_UPDATE_STR, 
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_UPDATE_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_UPDATE_STR-VKBUR sy-vline 
WA_VBKAKOM_UPDATE_STR-VKGRP sy-vline 
WA_VBKAKOM_UPDATE_STR-PARVW_PARNR sy-vline 
WA_VBKAKOM_UPDATE_STR-PARNR sy-vline 
WA_VBKAKOM_UPDATE_STR-KTABG sy-vline 
WA_VBKAKOM_UPDATE_STR-KTAEN sy-vline 
WA_VBKAKOM_UPDATE_STR-KTABT sy-vline 
WA_VBKAKOM_UPDATE_STR-KTAET sy-vline 
WA_VBKAKOM_UPDATE_STR-KTAGR sy-vline 
WA_VBKAKOM_UPDATE_STR-KTAST sy-vline 
WA_VBKAKOM_UPDATE_STR-KTAER sy-vline 
WA_VBKAKOM_UPDATE_STR-KTAEB sy-vline 
WA_VBKAKOM_UPDATE_STR-KTAFK sy-vline 
WA_VBKAKOM_UPDATE_STR-KTADA sy-vline 
WA_VBKAKOM_UPDATE_STR-KTEXT sy-vline 
WA_VBKAKOM_UPDATE_STR-KTEXT_MC_LANGU sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA01 sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA02 sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA03 sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA04 sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA05 sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA06 sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA07 sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA08 sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA09 sy-vline 
WA_VBKAKOM_UPDATE_STR-KTA10 sy-vline 
WA_VBKAKOM_UPDATE_STR-TXT_KONSE sy-vline 
WA_VBKAKOM_UPDATE_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.