ABAP Select data from SAP table RFKB6 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFKB6 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 RFKB6. 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 RFKB6 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_RFKB6 TYPE STANDARD TABLE OF RFKB6,
      WA_RFKB6 TYPE RFKB6,
      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: <RFKB6> TYPE RFKB6.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFKB6.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFKB6
  INTO TABLE IT_RFKB6.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKB6
*  INTO TABLE @DATA(IT_RFKB62).
*--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_RFKB6 INDEX 1 INTO DATA(WA_RFKB62).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFKB6 ASSIGNING <RFKB6>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKB6>-GPART = 1.
<RFKB6>-VKONT = 1.
<RFKB6>-VTREF = 1.
<RFKB6>-BUKRS = 1.
<RFKB6>-WAERS = 1.

ENDLOOP.

LOOP AT IT_RFKB6 INTO WA_RFKB6.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKB6-BUDAT, sy-vline,
  WA_RFKB6-AUGRD, sy-vline,
  WA_RFKB6-BLART, sy-vline,
  WA_RFKB6-FIKEY, sy-vline,
  WA_RFKB6-FAEDN, sy-vline,
  WA_RFKB6-HERKF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKB6 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_RFKB6 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_RFKB6 INTO WA_RFKB6.


*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 GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKB6-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKB6-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKB6-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKB6-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKB6-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKB6-VTREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BROKR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKB6-BROKR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKB6-BROKR.
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_RFKB6_STR, 
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
BUDAT TYPE STRING,
AUGRD TYPE STRING,
BLART TYPE STRING,
FIKEY TYPE STRING,
FAEDN TYPE STRING,
HERKF TYPE STRING,
XAGVO TYPE STRING,
DIFFB TYPE STRING,
APPLK TYPE STRING,
INCPR TYPE STRING,
INCDY TYPE STRING,
INCFB TYPE STRING,
BROKR TYPE STRING,
LDGRP TYPE STRING,
XLDGR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKB6_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_RFKB6_STR-GPART sy-vline 
WA_RFKB6_STR-VKONT sy-vline 
WA_RFKB6_STR-VTREF sy-vline 
WA_RFKB6_STR-BUKRS sy-vline 
WA_RFKB6_STR-WAERS sy-vline 
WA_RFKB6_STR-BUDAT sy-vline 
WA_RFKB6_STR-AUGRD sy-vline 
WA_RFKB6_STR-BLART sy-vline 
WA_RFKB6_STR-FIKEY sy-vline 
WA_RFKB6_STR-FAEDN sy-vline 
WA_RFKB6_STR-HERKF sy-vline 
WA_RFKB6_STR-XAGVO sy-vline 
WA_RFKB6_STR-DIFFB sy-vline 
WA_RFKB6_STR-APPLK sy-vline 
WA_RFKB6_STR-INCPR sy-vline 
WA_RFKB6_STR-INCDY sy-vline 
WA_RFKB6_STR-INCFB sy-vline 
WA_RFKB6_STR-BROKR sy-vline 
WA_RFKB6_STR-LDGRP sy-vline 
WA_RFKB6_STR-XLDGR sy-vline      INTO ld_text SEPARATED BY SPACE.

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