ABAP Select data from SAP table RFOPT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFOPT
*  INTO TABLE @DATA(IT_RFOPT2).
*--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_RFOPT INDEX 1 INTO DATA(WA_RFOPT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFOPT>-XNOWA = 1.
<RFOPT>-XNOSU = 1.
<RFOPT>-XNOBK = 1.
<RFOPT>-XNOHW = 1.
<RFOPT>-XSAKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFOPT-XOPCM, sy-vline,
  WA_RFOPT-XPRGB, sy-vline,
  WA_RFOPT-XOPIN, sy-vline,
  WA_RFOPT-XDKZS, sy-vline,
  WA_RFOPT-XARBV, sy-vline,
  WA_RFOPT-XOBLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFOPT 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_RFOPT 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_RFOPT INTO WA_RFOPT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RFOPT_STR, 
XNOWA TYPE STRING,
XNOSU TYPE STRING,
XNOBK TYPE STRING,
XNOHW TYPE STRING,
XSAKZ TYPE STRING,
XOPCM TYPE STRING,
XPRGB TYPE STRING,
XOPIN TYPE STRING,
XDKZS TYPE STRING,
XARBV TYPE STRING,
XOBLE TYPE STRING,
XKTRS TYPE STRING,
XRPTZ TYPE STRING,
XARBA TYPE STRING,
XTXKO TYPE STRING,
XKESR TYPE STRING,
XBARC TYPE STRING,
XSPIU TYPE STRING,
XZSER TYPE STRING,
XINVR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFOPT_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_RFOPT_STR-XNOWA sy-vline 
WA_RFOPT_STR-XNOSU sy-vline 
WA_RFOPT_STR-XNOBK sy-vline 
WA_RFOPT_STR-XNOHW sy-vline 
WA_RFOPT_STR-XSAKZ sy-vline 
WA_RFOPT_STR-XOPCM sy-vline 
WA_RFOPT_STR-XPRGB sy-vline 
WA_RFOPT_STR-XOPIN sy-vline 
WA_RFOPT_STR-XDKZS sy-vline 
WA_RFOPT_STR-XARBV sy-vline 
WA_RFOPT_STR-XOBLE sy-vline 
WA_RFOPT_STR-XKTRS sy-vline 
WA_RFOPT_STR-XRPTZ sy-vline 
WA_RFOPT_STR-XARBA sy-vline 
WA_RFOPT_STR-XTXKO sy-vline 
WA_RFOPT_STR-XKESR sy-vline 
WA_RFOPT_STR-XBARC sy-vline 
WA_RFOPT_STR-XSPIU sy-vline 
WA_RFOPT_STR-XZSER sy-vline 
WA_RFOPT_STR-XINVR sy-vline      INTO ld_text SEPARATED BY SPACE.

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