ABAP Select data from SAP table VSVBUK_CN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VSVBUK_CN
*  INTO TABLE @DATA(IT_VSVBUK_CN2).
*--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_VSVBUK_CN INDEX 1 INTO DATA(WA_VSVBUK_CN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VSVBUK_CN>-MANDT = 1.
<VSVBUK_CN>-VSNMR = 1.
<VSVBUK_CN>-VBELN = 1.
<VSVBUK_CN>-RFSTK = 1.
<VSVBUK_CN>-RFGSK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VSVBUK_CN-BESTK, sy-vline,
  WA_VSVBUK_CN-LFSTK, sy-vline,
  WA_VSVBUK_CN-LFGSK, sy-vline,
  WA_VSVBUK_CN-WBSTK, sy-vline,
  WA_VSVBUK_CN-FKSTK, sy-vline,
  WA_VSVBUK_CN-FKSAK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VSVBUK_CN 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_VSVBUK_CN 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_VSVBUK_CN INTO WA_VSVBUK_CN.


*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_VSVBUK_CN-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VSVBUK_CN-VBELN.
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_VSVBUK_CN_STR, 
MANDT TYPE STRING,
VSNMR TYPE STRING,
VBELN TYPE STRING,
RFSTK TYPE STRING,
RFGSK TYPE STRING,
BESTK TYPE STRING,
LFSTK TYPE STRING,
LFGSK TYPE STRING,
WBSTK TYPE STRING,
FKSTK TYPE STRING,
FKSAK TYPE STRING,
BUCHK TYPE STRING,
ABSTK TYPE STRING,
GBSTK TYPE STRING,
KOSTK TYPE STRING,
LVSTK TYPE STRING,
UVALS TYPE STRING,
UVVLS TYPE STRING,
UVFAS TYPE STRING,
UVALL TYPE STRING,
UVVLK TYPE STRING,
UVFAK TYPE STRING,
UVPRS TYPE STRING,
VBTYP TYPE STRING,
VBOBJ TYPE STRING,
AEDAT TYPE STRING,
FKIVK TYPE STRING,
RELIK TYPE STRING,
UVK01 TYPE STRING,
UVK02 TYPE STRING,
UVK03 TYPE STRING,
UVK04 TYPE STRING,
UVK05 TYPE STRING,
UVS01 TYPE STRING,
UVS02 TYPE STRING,
UVS03 TYPE STRING,
UVS04 TYPE STRING,
UVS05 TYPE STRING,
PKSTK TYPE STRING,
CMPSA TYPE STRING,
CMPSB TYPE STRING,
CMPSC TYPE STRING,
CMPSD TYPE STRING,
CMPSE TYPE STRING,
CMPSF TYPE STRING,
CMPSG TYPE STRING,
CMPSH TYPE STRING,
CMPSI TYPE STRING,
CMPSJ TYPE STRING,
CMPSK TYPE STRING,
CMPSL TYPE STRING,
CMPS0 TYPE STRING,
CMPS1 TYPE STRING,
CMPS2 TYPE STRING,
CMGST TYPE STRING,
TRSTA TYPE STRING,
KOQUK TYPE STRING,
COSTA TYPE STRING,
SAPRL TYPE STRING,
UVPAS TYPE STRING,
UVPIS TYPE STRING,
UVWAS TYPE STRING,
UVPAK TYPE STRING,
UVPIK TYPE STRING,
UVWAK TYPE STRING,
UVGEK TYPE STRING,
CMPSM TYPE STRING,
DCSTK TYPE STRING,
VESTK TYPE STRING,
VLSTK TYPE STRING,
RRSTA TYPE STRING,
BLOCK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VSVBUK_CN_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_VSVBUK_CN_STR-MANDT sy-vline 
WA_VSVBUK_CN_STR-VSNMR sy-vline 
WA_VSVBUK_CN_STR-VBELN sy-vline 
WA_VSVBUK_CN_STR-RFSTK sy-vline 
WA_VSVBUK_CN_STR-RFGSK sy-vline 
WA_VSVBUK_CN_STR-BESTK sy-vline 
WA_VSVBUK_CN_STR-LFSTK sy-vline 
WA_VSVBUK_CN_STR-LFGSK sy-vline 
WA_VSVBUK_CN_STR-WBSTK sy-vline 
WA_VSVBUK_CN_STR-FKSTK sy-vline 
WA_VSVBUK_CN_STR-FKSAK sy-vline 
WA_VSVBUK_CN_STR-BUCHK sy-vline 
WA_VSVBUK_CN_STR-ABSTK sy-vline 
WA_VSVBUK_CN_STR-GBSTK sy-vline 
WA_VSVBUK_CN_STR-KOSTK sy-vline 
WA_VSVBUK_CN_STR-LVSTK sy-vline 
WA_VSVBUK_CN_STR-UVALS sy-vline 
WA_VSVBUK_CN_STR-UVVLS sy-vline 
WA_VSVBUK_CN_STR-UVFAS sy-vline 
WA_VSVBUK_CN_STR-UVALL sy-vline 
WA_VSVBUK_CN_STR-UVVLK sy-vline 
WA_VSVBUK_CN_STR-UVFAK sy-vline 
WA_VSVBUK_CN_STR-UVPRS sy-vline 
WA_VSVBUK_CN_STR-VBTYP sy-vline 
WA_VSVBUK_CN_STR-VBOBJ sy-vline 
WA_VSVBUK_CN_STR-AEDAT sy-vline 
WA_VSVBUK_CN_STR-FKIVK sy-vline 
WA_VSVBUK_CN_STR-RELIK sy-vline 
WA_VSVBUK_CN_STR-UVK01 sy-vline 
WA_VSVBUK_CN_STR-UVK02 sy-vline 
WA_VSVBUK_CN_STR-UVK03 sy-vline 
WA_VSVBUK_CN_STR-UVK04 sy-vline 
WA_VSVBUK_CN_STR-UVK05 sy-vline 
WA_VSVBUK_CN_STR-UVS01 sy-vline 
WA_VSVBUK_CN_STR-UVS02 sy-vline 
WA_VSVBUK_CN_STR-UVS03 sy-vline 
WA_VSVBUK_CN_STR-UVS04 sy-vline 
WA_VSVBUK_CN_STR-UVS05 sy-vline 
WA_VSVBUK_CN_STR-PKSTK sy-vline 
WA_VSVBUK_CN_STR-CMPSA sy-vline 
WA_VSVBUK_CN_STR-CMPSB sy-vline 
WA_VSVBUK_CN_STR-CMPSC sy-vline 
WA_VSVBUK_CN_STR-CMPSD sy-vline 
WA_VSVBUK_CN_STR-CMPSE sy-vline 
WA_VSVBUK_CN_STR-CMPSF sy-vline 
WA_VSVBUK_CN_STR-CMPSG sy-vline 
WA_VSVBUK_CN_STR-CMPSH sy-vline 
WA_VSVBUK_CN_STR-CMPSI sy-vline 
WA_VSVBUK_CN_STR-CMPSJ sy-vline 
WA_VSVBUK_CN_STR-CMPSK sy-vline 
WA_VSVBUK_CN_STR-CMPSL sy-vline 
WA_VSVBUK_CN_STR-CMPS0 sy-vline 
WA_VSVBUK_CN_STR-CMPS1 sy-vline 
WA_VSVBUK_CN_STR-CMPS2 sy-vline 
WA_VSVBUK_CN_STR-CMGST sy-vline 
WA_VSVBUK_CN_STR-TRSTA sy-vline 
WA_VSVBUK_CN_STR-KOQUK sy-vline 
WA_VSVBUK_CN_STR-COSTA sy-vline 
WA_VSVBUK_CN_STR-SAPRL sy-vline 
WA_VSVBUK_CN_STR-UVPAS sy-vline 
WA_VSVBUK_CN_STR-UVPIS sy-vline 
WA_VSVBUK_CN_STR-UVWAS sy-vline 
WA_VSVBUK_CN_STR-UVPAK sy-vline 
WA_VSVBUK_CN_STR-UVPIK sy-vline 
WA_VSVBUK_CN_STR-UVWAK sy-vline 
WA_VSVBUK_CN_STR-UVGEK sy-vline 
WA_VSVBUK_CN_STR-CMPSM sy-vline 
WA_VSVBUK_CN_STR-DCSTK sy-vline 
WA_VSVBUK_CN_STR-VESTK sy-vline 
WA_VSVBUK_CN_STR-VLSTK sy-vline 
WA_VSVBUK_CN_STR-RRSTA sy-vline 
WA_VSVBUK_CN_STR-BLOCK sy-vline      INTO ld_text SEPARATED BY SPACE.

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