ABAP Select data from SAP table VKKK_RB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VKKK_RB
*  INTO TABLE @DATA(IT_VKKK_RB2).
*--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_VKKK_RB INDEX 1 INTO DATA(WA_VKKK_RB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VKKK_RB>-CHIRB = 1.
<VKKK_RB>-RBART = 1.
<VKKK_RB>-RBZNR = 1.
<VKKK_RB>-ABDAT = 1.
<VKKK_RB>-VKONT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VKKK_RB-ABGRD, sy-vline,
  WA_VKKK_RB-VTRST, sy-vline,
  WA_VKKK_RB-STOPG, sy-vline,
  WA_VKKK_RB-STOPD, sy-vline,
  WA_VKKK_RB-GABDA, sy-vline,
  WA_VKKK_RB-GABTI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VKKK_RB 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_VKKK_RB 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_VKKK_RB INTO WA_VKKK_RB.


*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 VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VKKK_RB-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VKKK_RB-VKONT.
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_VKKK_RB_STR, 
CHIRB TYPE STRING,
RBART TYPE STRING,
RBZNR TYPE STRING,
ABDAT TYPE STRING,
VKONT TYPE STRING,
ABGRD TYPE STRING,
VTRST TYPE STRING,
STOPG TYPE STRING,
STOPD TYPE STRING,
GABDA TYPE STRING,
GABTI TYPE STRING,
BUKRS TYPE STRING,
LNDSL TYPE STRING,
NONACTIVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VKKK_RB_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_VKKK_RB_STR-CHIRB sy-vline 
WA_VKKK_RB_STR-RBART sy-vline 
WA_VKKK_RB_STR-RBZNR sy-vline 
WA_VKKK_RB_STR-ABDAT sy-vline 
WA_VKKK_RB_STR-VKONT sy-vline 
WA_VKKK_RB_STR-ABGRD sy-vline 
WA_VKKK_RB_STR-VTRST sy-vline 
WA_VKKK_RB_STR-STOPG sy-vline 
WA_VKKK_RB_STR-STOPD sy-vline 
WA_VKKK_RB_STR-GABDA sy-vline 
WA_VKKK_RB_STR-GABTI sy-vline 
WA_VKKK_RB_STR-BUKRS sy-vline 
WA_VKKK_RB_STR-LNDSL sy-vline 
WA_VKKK_RB_STR-NONACTIVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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