ABAP Select data from SAP table VBKON into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VBKON 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 VBKON. 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 VBKON 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_VBKON TYPE STANDARD TABLE OF VBKON,
      WA_VBKON TYPE VBKON,
      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: <VBKON> TYPE VBKON.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VBKON
*  INTO TABLE @DATA(IT_VBKON2).
*--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_VBKON INDEX 1 INTO DATA(WA_VBKON2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VBKON>-VBELN = 1.
<VBKON>-PARNR = 1.
<VBKON>-SELKZ = 1.
<VBKON>-ERDAT = 1.
<VBKON>-ERZET = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VBKON-ERNAM, sy-vline,
  WA_VBKON-AEDAT, sy-vline,
  WA_VBKON-AEZET, sy-vline,
  WA_VBKON-AENAM, sy-vline,
  WA_VBKON-KTAAR, sy-vline,
  WA_VBKON-ARTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VBKON 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_VBKON 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_VBKON INTO WA_VBKON.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VBKON-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKON-VBELN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_VBKON-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBKON-PARVW.
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_VBKON_STR, 
VBELN TYPE STRING,
PARNR TYPE STRING,
SELKZ TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZET TYPE STRING,
AENAM TYPE STRING,
KTAAR TYPE STRING,
ARTXT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
KTABG TYPE STRING,
KTAEN TYPE STRING,
KTABT TYPE STRING,
KTAET TYPE STRING,
KTAGR TYPE STRING,
STTXT TYPE STRING,
KTAST TYPE STRING,
KSTTXT TYPE STRING,
KTAER TYPE STRING,
ERTXT TYPE STRING,
KTAEB TYPE STRING,
EBTXT TYPE STRING,
KTARE TYPE STRING,
KTAVA TYPE STRING,
KTANR TYPE STRING,
KTAFK TYPE STRING,
KTADA TYPE STRING,
ADRNR TYPE STRING,
KTARA TYPE STRING,
VGBEL TYPE STRING,
KTEXT 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,
GBSTK TYPE STRING,
STATU TYPE STRING,
KUNNR TYPE STRING,
KNAME TYPE STRING,
KORT TYPE STRING,
PARVW TYPE STRING,
PNAME TYPE STRING,
ACTIV TYPE STRING,
DUMMY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VBKON_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_VBKON_STR-VBELN sy-vline 
WA_VBKON_STR-PARNR sy-vline 
WA_VBKON_STR-SELKZ sy-vline 
WA_VBKON_STR-ERDAT sy-vline 
WA_VBKON_STR-ERZET sy-vline 
WA_VBKON_STR-ERNAM sy-vline 
WA_VBKON_STR-AEDAT sy-vline 
WA_VBKON_STR-AEZET sy-vline 
WA_VBKON_STR-AENAM sy-vline 
WA_VBKON_STR-KTAAR sy-vline 
WA_VBKON_STR-ARTXT sy-vline 
WA_VBKON_STR-VKORG sy-vline 
WA_VBKON_STR-VTWEG sy-vline 
WA_VBKON_STR-SPART sy-vline 
WA_VBKON_STR-VKBUR sy-vline 
WA_VBKON_STR-VKGRP sy-vline 
WA_VBKON_STR-KTABG sy-vline 
WA_VBKON_STR-KTAEN sy-vline 
WA_VBKON_STR-KTABT sy-vline 
WA_VBKON_STR-KTAET sy-vline 
WA_VBKON_STR-KTAGR sy-vline 
WA_VBKON_STR-STTXT sy-vline 
WA_VBKON_STR-KTAST sy-vline 
WA_VBKON_STR-KSTTXT sy-vline 
WA_VBKON_STR-KTAER sy-vline 
WA_VBKON_STR-ERTXT sy-vline 
WA_VBKON_STR-KTAEB sy-vline 
WA_VBKON_STR-EBTXT sy-vline 
WA_VBKON_STR-KTARE sy-vline 
WA_VBKON_STR-KTAVA sy-vline 
WA_VBKON_STR-KTANR sy-vline 
WA_VBKON_STR-KTAFK sy-vline 
WA_VBKON_STR-KTADA sy-vline 
WA_VBKON_STR-ADRNR sy-vline 
WA_VBKON_STR-KTARA sy-vline 
WA_VBKON_STR-VGBEL sy-vline 
WA_VBKON_STR-KTEXT sy-vline 
WA_VBKON_STR-KTA01 sy-vline 
WA_VBKON_STR-KTA02 sy-vline 
WA_VBKON_STR-KTA03 sy-vline 
WA_VBKON_STR-KTA04 sy-vline 
WA_VBKON_STR-KTA05 sy-vline 
WA_VBKON_STR-KTA06 sy-vline 
WA_VBKON_STR-KTA07 sy-vline 
WA_VBKON_STR-KTA08 sy-vline 
WA_VBKON_STR-KTA09 sy-vline 
WA_VBKON_STR-KTA10 sy-vline 
WA_VBKON_STR-GBSTK sy-vline 
WA_VBKON_STR-STATU sy-vline 
WA_VBKON_STR-KUNNR sy-vline 
WA_VBKON_STR-KNAME sy-vline 
WA_VBKON_STR-KORT sy-vline 
WA_VBKON_STR-PARVW sy-vline 
WA_VBKON_STR-PNAME sy-vline 
WA_VBKON_STR-ACTIV sy-vline 
WA_VBKON_STR-DUMMY sy-vline      INTO ld_text SEPARATED BY SPACE.

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