ABAP Select data from SAP table VBLBKOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VBLBKOM
*  INTO TABLE @DATA(IT_VBLBKOM2).
*--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_VBLBKOM INDEX 1 INTO DATA(WA_VBLBKOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VBLBKOM>-POSNR = 1.
<VBLBKOM>-ABART = 1.
<VBLBKOM>-DOCNUM = 1.
<VBLBKOM>-ABEFZ = 1.
<VBLBKOM>-ABRAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VBLBKOM-ABRBI, sy-vline,
  WA_VBLBKOM-LABNK, sy-vline,
  WA_VBLBKOM-ABRDT, sy-vline,
  WA_VBLBKOM-TERSL, sy-vline,
  WA_VBLBKOM-LFDKD, sy-vline,
  WA_VBLBKOM-LFNKD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VBLBKOM 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_VBLBKOM 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_VBLBKOM INTO WA_VBLBKOM.


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

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

*Conversion exit GJAHR, internal->external for field VJKUN
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_VBLBKOM-VJKUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBLBKOM-VJKUN.
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_VBLBKOM_STR, 
POSNR TYPE STRING,
ABART TYPE STRING,
DOCNUM TYPE STRING,
ABEFZ TYPE STRING,
ABRAB TYPE STRING,
ABRBI TYPE STRING,
LABNK TYPE STRING,
ABRDT TYPE STRING,
TERSL TYPE STRING,
LFDKD TYPE STRING,
LFNKD TYPE STRING,
ABFDA TYPE STRING,
ABFDE TYPE STRING,
ABMDA TYPE STRING,
ABMDE TYPE STRING,
ABHOR TYPE STRING,
AKMFZ TYPE STRING,
AKFFZ TYPE STRING,
AKLFZ TYPE STRING,
HIFFZ TYPE STRING,
HIMFZ TYPE STRING,
HILFZ TYPE STRING,
KRITB TYPE STRING,
LABKY TYPE STRING,
VBRST TYPE STRING,
EDLLS TYPE STRING,
EDLDT TYPE STRING,
LFMKD TYPE STRING,
USR01 TYPE STRING,
USR02 TYPE STRING,
USR03 TYPE STRING,
USR04 TYPE STRING,
USR05 TYPE STRING,
CYEFZ TYPE STRING,
CYDAT TYPE STRING,
MFLAUF TYPE STRING,
MFEIN TYPE STRING,
FFLAUF TYPE STRING,
FFEIN TYPE STRING,
LFMAIS TYPE STRING,
MAIDT TYPE STRING,
REFOBJTYPE TYPE STRING,
REFOBJKEY TYPE STRING,
REFLOGSYS TYPE STRING,
VJKUN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VBLBKOM_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_VBLBKOM_STR-POSNR sy-vline 
WA_VBLBKOM_STR-ABART sy-vline 
WA_VBLBKOM_STR-DOCNUM sy-vline 
WA_VBLBKOM_STR-ABEFZ sy-vline 
WA_VBLBKOM_STR-ABRAB sy-vline 
WA_VBLBKOM_STR-ABRBI sy-vline 
WA_VBLBKOM_STR-LABNK sy-vline 
WA_VBLBKOM_STR-ABRDT sy-vline 
WA_VBLBKOM_STR-TERSL sy-vline 
WA_VBLBKOM_STR-LFDKD sy-vline 
WA_VBLBKOM_STR-LFNKD sy-vline 
WA_VBLBKOM_STR-ABFDA sy-vline 
WA_VBLBKOM_STR-ABFDE sy-vline 
WA_VBLBKOM_STR-ABMDA sy-vline 
WA_VBLBKOM_STR-ABMDE sy-vline 
WA_VBLBKOM_STR-ABHOR sy-vline 
WA_VBLBKOM_STR-AKMFZ sy-vline 
WA_VBLBKOM_STR-AKFFZ sy-vline 
WA_VBLBKOM_STR-AKLFZ sy-vline 
WA_VBLBKOM_STR-HIFFZ sy-vline 
WA_VBLBKOM_STR-HIMFZ sy-vline 
WA_VBLBKOM_STR-HILFZ sy-vline 
WA_VBLBKOM_STR-KRITB sy-vline 
WA_VBLBKOM_STR-LABKY sy-vline 
WA_VBLBKOM_STR-VBRST sy-vline 
WA_VBLBKOM_STR-EDLLS sy-vline 
WA_VBLBKOM_STR-EDLDT sy-vline 
WA_VBLBKOM_STR-LFMKD sy-vline 
WA_VBLBKOM_STR-USR01 sy-vline 
WA_VBLBKOM_STR-USR02 sy-vline 
WA_VBLBKOM_STR-USR03 sy-vline 
WA_VBLBKOM_STR-USR04 sy-vline 
WA_VBLBKOM_STR-USR05 sy-vline 
WA_VBLBKOM_STR-CYEFZ sy-vline 
WA_VBLBKOM_STR-CYDAT sy-vline 
WA_VBLBKOM_STR-MFLAUF sy-vline 
WA_VBLBKOM_STR-MFEIN sy-vline 
WA_VBLBKOM_STR-FFLAUF sy-vline 
WA_VBLBKOM_STR-FFEIN sy-vline 
WA_VBLBKOM_STR-LFMAIS sy-vline 
WA_VBLBKOM_STR-MAIDT sy-vline 
WA_VBLBKOM_STR-REFOBJTYPE sy-vline 
WA_VBLBKOM_STR-REFOBJKEY sy-vline 
WA_VBLBKOM_STR-REFLOGSYS sy-vline 
WA_VBLBKOM_STR-VJKUN sy-vline      INTO ld_text SEPARATED BY SPACE.

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