ABAP Select data from SAP table RF40S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RF40S 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 RF40S. 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 RF40S 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_RF40S TYPE STANDARD TABLE OF RF40S,
      WA_RF40S TYPE RF40S,
      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: <RF40S> TYPE RF40S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RF40S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RF40S
  INTO TABLE IT_RF40S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RF40S
*  INTO TABLE @DATA(IT_RF40S2).
*--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_RF40S INDEX 1 INTO DATA(WA_RF40S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RF40S ASSIGNING <RF40S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RF40S>-MANDT = 1.
<RF40S>-HERKU = 1.
<RF40S>-BUKRS = 1.
<RF40S>-KOART = 1.
<RF40S>-HKONT = 1.

ENDLOOP.

LOOP AT IT_RF40S INTO WA_RF40S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RF40S-FDGRP, sy-vline,
  WA_RF40S-FDLEV, sy-vline,
  WA_RF40S-CURRA, sy-vline,
  WA_RF40S-CURRD, sy-vline,
  WA_RF40S-FDTAG, sy-vline,
  WA_RF40S-AVDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RF40S 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_RF40S 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_RF40S INTO WA_RF40S.


*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 HERKU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-HERKU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-HERKU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-HKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FDGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-FDGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-FDGRP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field FDWBT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-FDWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-FDWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field FDDBT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-FDDBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-FDDBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-GRANT_NBR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-SEGMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field FWSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_RF40S-FWSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40S-FWSTE.
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_RF40S_STR, 
MANDT TYPE STRING,
HERKU TYPE STRING,
BUKRS TYPE STRING,
KOART TYPE STRING,
HKONT TYPE STRING,
FDGRP TYPE STRING,
FDLEV TYPE STRING,
CURRA TYPE STRING,
CURRD TYPE STRING,
FDTAG TYPE STRING,
AVDAT TYPE STRING,
GSBER TYPE STRING,
FDWBT TYPE STRING,
FDDBT TYPE STRING,
GEBER TYPE STRING,
GRANT_NBR TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
CMVIEW TYPE STRING,
SPLIT TYPE STRING,
LTYPE TYPE STRING,
LNKID TYPE STRING,
SUBPROCESS TYPE STRING,
PAYMODE TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
AUGRD TYPE STRING,
HERKF TYPE STRING,
BTTYPE TYPE STRING,
FWSTE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RF40S_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_RF40S_STR-MANDT sy-vline 
WA_RF40S_STR-HERKU sy-vline 
WA_RF40S_STR-BUKRS sy-vline 
WA_RF40S_STR-KOART sy-vline 
WA_RF40S_STR-HKONT sy-vline 
WA_RF40S_STR-FDGRP sy-vline 
WA_RF40S_STR-FDLEV sy-vline 
WA_RF40S_STR-CURRA sy-vline 
WA_RF40S_STR-CURRD sy-vline 
WA_RF40S_STR-FDTAG sy-vline 
WA_RF40S_STR-AVDAT sy-vline 
WA_RF40S_STR-GSBER sy-vline 
WA_RF40S_STR-FDWBT sy-vline 
WA_RF40S_STR-FDDBT sy-vline 
WA_RF40S_STR-GEBER sy-vline 
WA_RF40S_STR-GRANT_NBR sy-vline 
WA_RF40S_STR-SEGMENT sy-vline 
WA_RF40S_STR-PRCTR sy-vline 
WA_RF40S_STR-CMVIEW sy-vline 
WA_RF40S_STR-SPLIT sy-vline 
WA_RF40S_STR-LTYPE sy-vline 
WA_RF40S_STR-LNKID sy-vline 
WA_RF40S_STR-SUBPROCESS sy-vline 
WA_RF40S_STR-PAYMODE sy-vline 
WA_RF40S_STR-GPART sy-vline 
WA_RF40S_STR-VKONT sy-vline 
WA_RF40S_STR-OPBEL sy-vline 
WA_RF40S_STR-OPUPK sy-vline 
WA_RF40S_STR-AUGRD sy-vline 
WA_RF40S_STR-HERKF sy-vline 
WA_RF40S_STR-BTTYPE sy-vline 
WA_RF40S_STR-FWSTE sy-vline      INTO ld_text SEPARATED BY SPACE.

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