ABAP Select data from SAP table RFOPT2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFOPT2 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 RFOPT2. 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 RFOPT2 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_RFOPT2 TYPE STANDARD TABLE OF RFOPT2,
      WA_RFOPT2 TYPE RFOPT2,
      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: <RFOPT2> TYPE RFOPT2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFOPT2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFOPT2
  INTO TABLE IT_RFOPT2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFOPT2
*  INTO TABLE @DATA(IT_RFOPT22).
*--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_RFOPT2 INDEX 1 INTO DATA(WA_RFOPT22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFOPT2 ASSIGNING <RFOPT2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFOPT2>-XSNET = 1.
<RFOPT2>-XNETA = 1.
<RFOPT2>-XESRK = 1.
<RFOPT2>-XUSSE = 1.
<RFOPT2>-XCMPL = 1.

ENDLOOP.

LOOP AT IT_RFOPT2 INTO WA_RFOPT2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFOPT2-BLWAV, sy-vline,
  WA_RFOPT2-XREBZ, sy-vline,
  WA_RFOPT2-XKIDN, sy-vline,
  WA_RFOPT2-XSABS, sy-vline,
  WA_RFOPT2-XNDEC, sy-vline,
  WA_RFOPT2-XKRSR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFOPT2 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_RFOPT2 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_RFOPT2 INTO WA_RFOPT2.


*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 XRLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFOPT2-XRLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFOPT2-XRLDNR.
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_RFOPT2_STR, 
XSNET TYPE STRING,
XNETA TYPE STRING,
XESRK TYPE STRING,
XUSSE TYPE STRING,
XCMPL TYPE STRING,
BLWAV TYPE STRING,
XREBZ TYPE STRING,
XKIDN TYPE STRING,
XSABS TYPE STRING,
XNDEC TYPE STRING,
XKRSR TYPE STRING,
XCURR TYPE STRING,
XDALV TYPE STRING,
XCROC TYPE STRING,
XMWKO TYPE STRING,
XABSB TYPE STRING,
XDRB TYPE STRING,
XBALV TYPE STRING,
XDOLD TYPE STRING,
XDLST TYPE STRING,
XDGRD TYPE STRING,
XNEGP_AUTO TYPE STRING,
X_NO_CC_DEF TYPE STRING,
XRLDNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFOPT2_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_RFOPT2_STR-XSNET sy-vline 
WA_RFOPT2_STR-XNETA sy-vline 
WA_RFOPT2_STR-XESRK sy-vline 
WA_RFOPT2_STR-XUSSE sy-vline 
WA_RFOPT2_STR-XCMPL sy-vline 
WA_RFOPT2_STR-BLWAV sy-vline 
WA_RFOPT2_STR-XREBZ sy-vline 
WA_RFOPT2_STR-XKIDN sy-vline 
WA_RFOPT2_STR-XSABS sy-vline 
WA_RFOPT2_STR-XNDEC sy-vline 
WA_RFOPT2_STR-XKRSR sy-vline 
WA_RFOPT2_STR-XCURR sy-vline 
WA_RFOPT2_STR-XDALV sy-vline 
WA_RFOPT2_STR-XCROC sy-vline 
WA_RFOPT2_STR-XMWKO sy-vline 
WA_RFOPT2_STR-XABSB sy-vline 
WA_RFOPT2_STR-XDRB sy-vline 
WA_RFOPT2_STR-XBALV sy-vline 
WA_RFOPT2_STR-XDOLD sy-vline 
WA_RFOPT2_STR-XDLST sy-vline 
WA_RFOPT2_STR-XDGRD sy-vline 
WA_RFOPT2_STR-XNEGP_AUTO sy-vline 
WA_RFOPT2_STR-X_NO_CC_DEF sy-vline 
WA_RFOPT2_STR-XRLDNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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