ABAP Select data from SAP table V_WKBK_WKBP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_WKBK_WKBP
*  INTO TABLE @DATA(IT_V_WKBK_WKBP2).
*--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_V_WKBK_WKBP INDEX 1 INTO DATA(WA_V_WKBK_WKBP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_WKBK_WKBP>-MANDT = 1.
<V_WKBK_WKBP>-KBELN = 1.
<V_WKBK_WKBP>-KBELP = 1.
<V_WKBK_WKBP>-VKKAB = 1.
<V_WKBK_WKBP>-VKKBI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_WKBK_WKBP-EKAPP, sy-vline,
  WA_V_WKBK_WKBP-VRKPE, sy-vline,
  WA_V_WKBK_WKBP-VRKME, sy-vline,
  WA_V_WKBK_WKBP-VKORG, sy-vline,
  WA_V_WKBK_WKBP-VTWEG, sy-vline,
  WA_V_WKBK_WKBP-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_WKBK_WKBP 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_V_WKBK_WKBP 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_V_WKBK_WKBP INTO WA_V_WKBK_WKBP.


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

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_WKBK_WKBP-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_WKBK_WKBP-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_V_WKBK_WKBP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_WKBK_WKBP-MATNR.
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_V_WKBK_WKBP_STR, 
MANDT TYPE STRING,
KBELN TYPE STRING,
KBELP TYPE STRING,
VKKAB TYPE STRING,
VKKBI TYPE STRING,
EKAPP TYPE STRING,
VRKPE TYPE STRING,
VRKME TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
ENDPR TYPE STRING,
VWAER TYPE STRING,
PLTYP TYPE STRING,
VORGA TYPE STRING,
BPSTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_WKBK_WKBP_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_V_WKBK_WKBP_STR-MANDT sy-vline 
WA_V_WKBK_WKBP_STR-KBELN sy-vline 
WA_V_WKBK_WKBP_STR-KBELP sy-vline 
WA_V_WKBK_WKBP_STR-VKKAB sy-vline 
WA_V_WKBK_WKBP_STR-VKKBI sy-vline 
WA_V_WKBK_WKBP_STR-EKAPP sy-vline 
WA_V_WKBK_WKBP_STR-VRKPE sy-vline 
WA_V_WKBK_WKBP_STR-VRKME sy-vline 
WA_V_WKBK_WKBP_STR-VKORG sy-vline 
WA_V_WKBK_WKBP_STR-VTWEG sy-vline 
WA_V_WKBK_WKBP_STR-WERKS sy-vline 
WA_V_WKBK_WKBP_STR-MATNR sy-vline 
WA_V_WKBK_WKBP_STR-MATKL sy-vline 
WA_V_WKBK_WKBP_STR-ENDPR sy-vline 
WA_V_WKBK_WKBP_STR-VWAER sy-vline 
WA_V_WKBK_WKBP_STR-PLTYP sy-vline 
WA_V_WKBK_WKBP_STR-VORGA sy-vline 
WA_V_WKBK_WKBP_STR-BPSTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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