ABAP Select data from SAP table RNLPFARR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNLPFARR
*  INTO TABLE @DATA(IT_RNLPFARR2).
*--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_RNLPFARR INDEX 1 INTO DATA(WA_RNLPFARR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNLPFARR>-KONFT = 1.
<RNLPFARR>-NAME = 1.
<RNLPFARR>-NNAME = 1.
<RNLPFARR>-VNAME = 1.
<RNLPFARR>-NNAMS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNLPFARR-VNAMS, sy-vline,
  WA_RNLPFARR-GBDAT, sy-vline,
  WA_RNLPFARR-PFARR, sy-vline,
  WA_RNLPFARR-PFTXT, sy-vline,
  WA_RNLPFARR-GSCHL, sy-vline,
  WA_RNLPFARR-AUFDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNLPFARR 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_RNLPFARR 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_RNLPFARR INTO WA_RNLPFARR.


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

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

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

*Conversion exit ALPHA, internal->external for field ZIMMR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLPFARR-ZIMMR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLPFARR-ZIMMR.
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_RNLPFARR_STR, 
KONFT TYPE STRING,
NAME TYPE STRING,
NNAME TYPE STRING,
VNAME TYPE STRING,
NNAMS TYPE STRING,
VNAMS TYPE STRING,
GBDAT TYPE STRING,
PFARR TYPE STRING,
PFTXT TYPE STRING,
GSCHL TYPE STRING,
AUFDT TYPE STRING,
EINRI TYPE STRING,
ORGPF TYPE STRING,
ORGKB TYPE STRING,
ORGDS TYPE STRING,
OEDSB TYPE STRING,
ZIMMR TYPE STRING,
TELNR TYPE STRING,
STRAS TYPE STRING,
PSTLZ TYPE STRING,
ORT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNLPFARR_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_RNLPFARR_STR-KONFT sy-vline 
WA_RNLPFARR_STR-NAME sy-vline 
WA_RNLPFARR_STR-NNAME sy-vline 
WA_RNLPFARR_STR-VNAME sy-vline 
WA_RNLPFARR_STR-NNAMS sy-vline 
WA_RNLPFARR_STR-VNAMS sy-vline 
WA_RNLPFARR_STR-GBDAT sy-vline 
WA_RNLPFARR_STR-PFARR sy-vline 
WA_RNLPFARR_STR-PFTXT sy-vline 
WA_RNLPFARR_STR-GSCHL sy-vline 
WA_RNLPFARR_STR-AUFDT sy-vline 
WA_RNLPFARR_STR-EINRI sy-vline 
WA_RNLPFARR_STR-ORGPF sy-vline 
WA_RNLPFARR_STR-ORGKB sy-vline 
WA_RNLPFARR_STR-ORGDS sy-vline 
WA_RNLPFARR_STR-OEDSB sy-vline 
WA_RNLPFARR_STR-ZIMMR sy-vline 
WA_RNLPFARR_STR-TELNR sy-vline 
WA_RNLPFARR_STR-STRAS sy-vline 
WA_RNLPFARR_STR-PSTLZ sy-vline 
WA_RNLPFARR_STR-ORT sy-vline      INTO ld_text SEPARATED BY SPACE.

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