ABAP Select data from SAP table RF40V into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RF40V 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 RF40V. 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 RF40V 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_RF40V TYPE STANDARD TABLE OF RF40V,
      WA_RF40V TYPE RF40V,
      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: <RF40V> TYPE RF40V.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RF40V.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RF40V
  INTO TABLE IT_RF40V.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RF40V
*  INTO TABLE @DATA(IT_RF40V2).
*--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_RF40V INDEX 1 INTO DATA(WA_RF40V2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RF40V ASSIGNING <RF40V>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RF40V>-MANDT = 1.
<RF40V>-XKFDS = 1.
<RF40V>-BUKRS = 1.
<RF40V>-VGRUP = 1.
<RF40V>-GRUPP = 1.

ENDLOOP.

LOOP AT IT_RF40V INTO WA_RF40V.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RF40V-VEBEN, sy-vline,
  WA_RF40V-EBENE, sy-vline,
  WA_RF40V-DATUM, sy-vline,
  WA_RF40V-DISPW, sy-vline,
  WA_RF40V-GSBER, sy-vline,
  WA_RF40V-SEGMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RF40V 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_RF40V 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_RF40V INTO WA_RF40V.


*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 GRUPP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40V-GRUPP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40V-GRUPP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40V-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40V-SEGMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40V-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40V-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40V-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40V-GRANT_NBR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRSHB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RF40V-WRSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40V-WRSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field DMSHB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RF40V-DMSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40V-DMSHB.
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_RF40V_STR, 
MANDT TYPE STRING,
XKFDS TYPE STRING,
BUKRS TYPE STRING,
VGRUP TYPE STRING,
GRUPP TYPE STRING,
VEBEN TYPE STRING,
EBENE TYPE STRING,
DATUM TYPE STRING,
DISPW TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
GEBER TYPE STRING,
GRANT_NBR TYPE STRING,
WRSHB TYPE STRING,
DMSHB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RF40V_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_RF40V_STR-MANDT sy-vline 
WA_RF40V_STR-XKFDS sy-vline 
WA_RF40V_STR-BUKRS sy-vline 
WA_RF40V_STR-VGRUP sy-vline 
WA_RF40V_STR-GRUPP sy-vline 
WA_RF40V_STR-VEBEN sy-vline 
WA_RF40V_STR-EBENE sy-vline 
WA_RF40V_STR-DATUM sy-vline 
WA_RF40V_STR-DISPW sy-vline 
WA_RF40V_STR-GSBER sy-vline 
WA_RF40V_STR-SEGMENT sy-vline 
WA_RF40V_STR-PRCTR sy-vline 
WA_RF40V_STR-GEBER sy-vline 
WA_RF40V_STR-GRANT_NBR sy-vline 
WA_RF40V_STR-WRSHB sy-vline 
WA_RF40V_STR-DMSHB sy-vline      INTO ld_text SEPARATED BY SPACE.

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