ABAP Select data from SAP table RF40D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RF40D 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 RF40D. 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 RF40D 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_RF40D TYPE STANDARD TABLE OF RF40D,
      WA_RF40D TYPE RF40D,
      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: <RF40D> TYPE RF40D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RF40D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RF40D
  INTO TABLE IT_RF40D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RF40D
*  INTO TABLE @DATA(IT_RF40D2).
*--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_RF40D INDEX 1 INTO DATA(WA_RF40D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RF40D ASSIGNING <RF40D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RF40D>-BUDAT = 1.
<RF40D>-BUKRS = 1.
<RF40D>-KOART = 1.
<RF40D>-UMSKZ = 1.
<RF40D>-UMSKS = 1.

ENDLOOP.

LOOP AT IT_RF40D INTO WA_RF40D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RF40D-SHKZG, sy-vline,
  WA_RF40D-VALUT, sy-vline,
  WA_RF40D-KUNNR, sy-vline,
  WA_RF40D-ZFBDT, sy-vline,
  WA_RF40D-ZBD1T, sy-vline,
  WA_RF40D-ZBD2T, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RF40D 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_RF40D 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_RF40D INTO WA_RF40D.


*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 KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40D-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40D-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REBZG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40D-REBZG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40D-REBZG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REBZJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RF40D-REBZJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40D-REBZJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40D-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40D-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FDGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF40D-FDGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF40D-FDGRP.
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_RF40D_STR, 
BUDAT TYPE STRING,
BUKRS TYPE STRING,
KOART TYPE STRING,
UMSKZ TYPE STRING,
UMSKS TYPE STRING,
SHKZG TYPE STRING,
VALUT TYPE STRING,
KUNNR TYPE STRING,
ZFBDT TYPE STRING,
ZBD1T TYPE STRING,
ZBD2T TYPE STRING,
ZBD3T TYPE STRING,
ZBD1P TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
REBZZ TYPE STRING,
ZLSCH TYPE STRING,
LIFNR TYPE STRING,
FDGRP TYPE STRING,
REBZT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RF40D_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_RF40D_STR-BUDAT sy-vline 
WA_RF40D_STR-BUKRS sy-vline 
WA_RF40D_STR-KOART sy-vline 
WA_RF40D_STR-UMSKZ sy-vline 
WA_RF40D_STR-UMSKS sy-vline 
WA_RF40D_STR-SHKZG sy-vline 
WA_RF40D_STR-VALUT sy-vline 
WA_RF40D_STR-KUNNR sy-vline 
WA_RF40D_STR-ZFBDT sy-vline 
WA_RF40D_STR-ZBD1T sy-vline 
WA_RF40D_STR-ZBD2T sy-vline 
WA_RF40D_STR-ZBD3T sy-vline 
WA_RF40D_STR-ZBD1P sy-vline 
WA_RF40D_STR-REBZG sy-vline 
WA_RF40D_STR-REBZJ sy-vline 
WA_RF40D_STR-REBZZ sy-vline 
WA_RF40D_STR-ZLSCH sy-vline 
WA_RF40D_STR-LIFNR sy-vline 
WA_RF40D_STR-FDGRP sy-vline 
WA_RF40D_STR-REBZT sy-vline      INTO ld_text SEPARATED BY SPACE.

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