ABAP Select data from SAP table RNFOR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNFOR 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 RNFOR. 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 RNFOR 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_RNFOR TYPE STANDARD TABLE OF RNFOR,
      WA_RNFOR TYPE RNFOR,
      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: <RNFOR> TYPE RNFOR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNFOR
*  INTO TABLE @DATA(IT_RNFOR2).
*--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_RNFOR INDEX 1 INTO DATA(WA_RNFOR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNFOR>-TOMID = 1.
<RNFOR>-LOMID = 1.
<RNFOR>-FBFORM = 1.
<RNFOR>-TDPAGESLCT = 1.
<RNFOR>-TDCOPIES = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNFOR-TDDEST, sy-vline,
  WA_RNFOR-TDPRINTER, sy-vline,
  WA_RNFOR-TDPREVIEW, sy-vline,
  WA_RNFOR-TDNOPREV, sy-vline,
  WA_RNFOR-TDNOPRINT, sy-vline,
  WA_RNFOR-TDNEWID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNFOR 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_RNFOR 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_RNFOR INTO WA_RNFOR.


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

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

*Conversion exit SPDEV, internal->external for field TDDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_RNFOR-TDDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNFOR-TDDEST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPDEV, internal->external for field TDRDIDEV
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_RNFOR-TDRDIDEV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNFOR-TDRDIDEV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TDSPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RNFOR-TDSPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNFOR-TDSPRAS.
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_RNFOR_STR, 
TOMID TYPE STRING,
LOMID TYPE STRING,
FBFORM TYPE STRING,
TDPAGESLCT TYPE STRING,
TDCOPIES TYPE STRING,
TDDEST TYPE STRING,
TDPRINTER TYPE STRING,
TDPREVIEW TYPE STRING,
TDNOPREV TYPE STRING,
TDNOPRINT TYPE STRING,
TDNEWID TYPE STRING,
TDDATASET TYPE STRING,
TDSUFFIX1 TYPE STRING,
TDSUFFIX2 TYPE STRING,
TDIMMED TYPE STRING,
TDDELETE TYPE STRING,
TDLIFETIME TYPE STRING,
TDSCHEDULE TYPE STRING,
TDSENDDATE TYPE STRING,
TDSENDTIME TYPE STRING,
TDTELELAND TYPE STRING,
TDTELENUM TYPE STRING,
TDTITLE TYPE STRING,
TDTEST TYPE STRING,
TDPROGRAM TYPE STRING,
TDSCRNPOS TYPE STRING,
TDCOVER TYPE STRING,
TDCOVTITLE TYPE STRING,
TDRECEIVER TYPE STRING,
TDDIVISION TYPE STRING,
TDAUTORITY TYPE STRING,
TDARMOD TYPE STRING,
TDIEXIT TYPE STRING,
TDGETOTF TYPE STRING,
TDFAXUSER TYPE STRING,
TDRDIDEV TYPE STRING,
TDNOARMCH TYPE STRING,
TDFINAL TYPE STRING,
RQPOSNAME TYPE STRING,
BCS_REQST TYPE STRING,
BCS_STATUS TYPE STRING,
PRINTTICKET TYPE STRING,
TDFORM TYPE STRING,
TDSPRAS TYPE STRING,
TDDIALOG TYPE STRING,
TDTEXT TYPE STRING,
DEVICE TYPE STRING,
TDLNAME TYPE STRING,
EDIT TYPE STRING,
TXTHE TYPE STRING,
TXTFO TYPE STRING,
TXTSE TYPE STRING,
TXTSI TYPE STRING,
TXTFR TYPE STRING,
BEDINGUNG TYPE STRING,
OMTYP TYPE STRING,
FBPRINT TYPE STRING,
PROTTYP TYPE STRING,
PROTKZ TYPE STRING,
SAP_OBJECT TYPE STRING,
FORMARCHIV TYPE STRING,
FORM_ID TYPE STRING,
AR_OBJECT TYPE STRING,
ARCTEXT TYPE STRING,
ARPER TYPE STRING,
ACTIV TYPE STRING,
APPLK TYPE STRING,
EVENT TYPE STRING,
SFFNAME TYPE STRING,
SFVARIA TYPE STRING,
SMARTFACT TYPE STRING,
AFNAME TYPE STRING,
AFACT TYPE STRING,
AFSFCOMP TYPE STRING,
PSEUDO_MODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNFOR_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_RNFOR_STR-TOMID sy-vline 
WA_RNFOR_STR-LOMID sy-vline 
WA_RNFOR_STR-FBFORM sy-vline 
WA_RNFOR_STR-TDPAGESLCT sy-vline 
WA_RNFOR_STR-TDCOPIES sy-vline 
WA_RNFOR_STR-TDDEST sy-vline 
WA_RNFOR_STR-TDPRINTER sy-vline 
WA_RNFOR_STR-TDPREVIEW sy-vline 
WA_RNFOR_STR-TDNOPREV sy-vline 
WA_RNFOR_STR-TDNOPRINT sy-vline 
WA_RNFOR_STR-TDNEWID sy-vline 
WA_RNFOR_STR-TDDATASET sy-vline 
WA_RNFOR_STR-TDSUFFIX1 sy-vline 
WA_RNFOR_STR-TDSUFFIX2 sy-vline 
WA_RNFOR_STR-TDIMMED sy-vline 
WA_RNFOR_STR-TDDELETE sy-vline 
WA_RNFOR_STR-TDLIFETIME sy-vline 
WA_RNFOR_STR-TDSCHEDULE sy-vline 
WA_RNFOR_STR-TDSENDDATE sy-vline 
WA_RNFOR_STR-TDSENDTIME sy-vline 
WA_RNFOR_STR-TDTELELAND sy-vline 
WA_RNFOR_STR-TDTELENUM sy-vline 
WA_RNFOR_STR-TDTITLE sy-vline 
WA_RNFOR_STR-TDTEST sy-vline 
WA_RNFOR_STR-TDPROGRAM sy-vline 
WA_RNFOR_STR-TDSCRNPOS sy-vline 
WA_RNFOR_STR-TDCOVER sy-vline 
WA_RNFOR_STR-TDCOVTITLE sy-vline 
WA_RNFOR_STR-TDRECEIVER sy-vline 
WA_RNFOR_STR-TDDIVISION sy-vline 
WA_RNFOR_STR-TDAUTORITY sy-vline 
WA_RNFOR_STR-TDARMOD sy-vline 
WA_RNFOR_STR-TDIEXIT sy-vline 
WA_RNFOR_STR-TDGETOTF sy-vline 
WA_RNFOR_STR-TDFAXUSER sy-vline 
WA_RNFOR_STR-TDRDIDEV sy-vline 
WA_RNFOR_STR-TDNOARMCH sy-vline 
WA_RNFOR_STR-TDFINAL sy-vline 
WA_RNFOR_STR-RQPOSNAME sy-vline 
WA_RNFOR_STR-BCS_REQST sy-vline 
WA_RNFOR_STR-BCS_STATUS sy-vline 
WA_RNFOR_STR-PRINTTICKET sy-vline 
WA_RNFOR_STR-TDFORM sy-vline 
WA_RNFOR_STR-TDSPRAS sy-vline 
WA_RNFOR_STR-TDDIALOG sy-vline 
WA_RNFOR_STR-TDTEXT sy-vline 
WA_RNFOR_STR-DEVICE sy-vline 
WA_RNFOR_STR-TDLNAME sy-vline 
WA_RNFOR_STR-EDIT sy-vline 
WA_RNFOR_STR-TXTHE sy-vline 
WA_RNFOR_STR-TXTFO sy-vline 
WA_RNFOR_STR-TXTSE sy-vline 
WA_RNFOR_STR-TXTSI sy-vline 
WA_RNFOR_STR-TXTFR sy-vline 
WA_RNFOR_STR-BEDINGUNG sy-vline 
WA_RNFOR_STR-OMTYP sy-vline 
WA_RNFOR_STR-FBPRINT sy-vline 
WA_RNFOR_STR-PROTTYP sy-vline 
WA_RNFOR_STR-PROTKZ sy-vline 
WA_RNFOR_STR-SAP_OBJECT sy-vline 
WA_RNFOR_STR-FORMARCHIV sy-vline 
WA_RNFOR_STR-FORM_ID sy-vline 
WA_RNFOR_STR-AR_OBJECT sy-vline 
WA_RNFOR_STR-ARCTEXT sy-vline 
WA_RNFOR_STR-ARPER sy-vline 
WA_RNFOR_STR-ACTIV sy-vline 
WA_RNFOR_STR-APPLK sy-vline 
WA_RNFOR_STR-EVENT sy-vline 
WA_RNFOR_STR-SFFNAME sy-vline 
WA_RNFOR_STR-SFVARIA sy-vline 
WA_RNFOR_STR-SMARTFACT sy-vline 
WA_RNFOR_STR-AFNAME sy-vline 
WA_RNFOR_STR-AFACT sy-vline 
WA_RNFOR_STR-AFSFCOMP sy-vline 
WA_RNFOR_STR-PSEUDO_MODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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