ABAP Select data from SAP table RFKIP 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 RFKIP 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 RFKIP. 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 RFKIP 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_RFKIP TYPE STANDARD TABLE OF RFKIP,
      WA_RFKIP TYPE RFKIP,
      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: <RFKIP> TYPE RFKIP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKIP
*  INTO TABLE @DATA(IT_RFKIP2).
*--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_RFKIP INDEX 1 INTO DATA(WA_RFKIP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKIP>-PDKEY = 1.
<RFKIP>-PDREF = 1.
<RFKIP>-GPART = 1.
<RFKIP>-VKONT = 1.
<RFKIP>-VTREF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKIP-SUBAP, sy-vline,
  WA_RFKIP-BROKR, sy-vline,
  WA_RFKIP-GPARV, sy-vline,
  WA_RFKIP-VKONV, sy-vline,
  WA_RFKIP-BUKRS, sy-vline,
  WA_RFKIP-OPBEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKIP 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_RFKIP 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_RFKIP INTO WA_RFKIP.


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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field RADOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKIP-RADOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKIP-RADOC.
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_RFKIP_STR, 
PDKEY TYPE STRING,
PDREF TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
SUBAP TYPE STRING,
BROKR TYPE STRING,
GPARV TYPE STRING,
VKONV TYPE STRING,
BUKRS TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
LAND1 TYPE STRING,
XITMS TYPE STRING,
TXTDI TYPE STRING,
TXTST TYPE STRING,
TXTIT TYPE STRING,
TXTWF TYPE STRING,
TXTPD TYPE STRING,
CALAM TYPE STRING,
CALAM_VZ TYPE STRING,
PRPAM TYPE STRING,
ITTAM TYPE STRING,
DIFFB TYPE STRING,
MINAM TYPE STRING,
MAXAM TYPE STRING,
STORB TYPE STRING,
ANZVA TYPE STRING,
VRBEZ TYPE STRING,
WAERS TYPE STRING,
EMGPA TYPE STRING,
PYGRP TYPE STRING,
RADOC TYPE STRING,
XARCH TYPE STRING,
CDACT TYPE STRING,
HEADNOEDIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKIP_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_RFKIP_STR-PDKEY sy-vline 
WA_RFKIP_STR-PDREF sy-vline 
WA_RFKIP_STR-GPART sy-vline 
WA_RFKIP_STR-VKONT sy-vline 
WA_RFKIP_STR-VTREF sy-vline 
WA_RFKIP_STR-SUBAP sy-vline 
WA_RFKIP_STR-BROKR sy-vline 
WA_RFKIP_STR-GPARV sy-vline 
WA_RFKIP_STR-VKONV sy-vline 
WA_RFKIP_STR-BUKRS sy-vline 
WA_RFKIP_STR-OPBEL sy-vline 
WA_RFKIP_STR-OPUPW sy-vline 
WA_RFKIP_STR-OPUPK sy-vline 
WA_RFKIP_STR-OPUPZ sy-vline 
WA_RFKIP_STR-LAND1 sy-vline 
WA_RFKIP_STR-XITMS sy-vline 
WA_RFKIP_STR-TXTDI sy-vline 
WA_RFKIP_STR-TXTST sy-vline 
WA_RFKIP_STR-TXTIT sy-vline 
WA_RFKIP_STR-TXTWF sy-vline 
WA_RFKIP_STR-TXTPD sy-vline 
WA_RFKIP_STR-CALAM sy-vline 
WA_RFKIP_STR-CALAM_VZ sy-vline 
WA_RFKIP_STR-PRPAM sy-vline 
WA_RFKIP_STR-ITTAM sy-vline 
WA_RFKIP_STR-DIFFB sy-vline 
WA_RFKIP_STR-MINAM sy-vline 
WA_RFKIP_STR-MAXAM sy-vline 
WA_RFKIP_STR-STORB sy-vline 
WA_RFKIP_STR-ANZVA sy-vline 
WA_RFKIP_STR-VRBEZ sy-vline 
WA_RFKIP_STR-WAERS sy-vline 
WA_RFKIP_STR-EMGPA sy-vline 
WA_RFKIP_STR-PYGRP sy-vline 
WA_RFKIP_STR-RADOC sy-vline 
WA_RFKIP_STR-XARCH sy-vline 
WA_RFKIP_STR-CDACT sy-vline 
WA_RFKIP_STR-HEADNOEDIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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