ABAP Select data from SAP table RFKP6_DSP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFKP6_DSP 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 RFKP6_DSP. 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 RFKP6_DSP 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_RFKP6_DSP TYPE STANDARD TABLE OF RFKP6_DSP,
      WA_RFKP6_DSP TYPE RFKP6_DSP,
      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: <RFKP6_DSP> TYPE RFKP6_DSP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFKP6_DSP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFKP6_DSP
  INTO TABLE IT_RFKP6_DSP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKP6_DSP
*  INTO TABLE @DATA(IT_RFKP6_DSP2).
*--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_RFKP6_DSP INDEX 1 INTO DATA(WA_RFKP6_DSP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFKP6_DSP ASSIGNING <RFKP6_DSP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKP6_DSP>-BUKRS = 1.
<RFKP6_DSP>-WAERS = 1.
<RFKP6_DSP>-ORI_BETRW = 1.
<RFKP6_DSP>-GPART = 1.
<RFKP6_DSP>-VKONT = 1.

ENDLOOP.

LOOP AT IT_RFKP6_DSP INTO WA_RFKP6_DSP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKP6_DSP-HVORG, sy-vline,
  WA_RFKP6_DSP-TVORG, sy-vline,
  WA_RFKP6_DSP-SPART, sy-vline,
  WA_RFKP6_DSP-VTREF, sy-vline,
  WA_RFKP6_DSP-XAESP, sy-vline,
  WA_RFKP6_DSP-XPYOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKP6_DSP 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_RFKP6_DSP 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_RFKP6_DSP INTO WA_RFKP6_DSP.


*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_RFKP6_DSP-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKP6_DSP-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKP6_DSP-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKP6_DSP-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKP6_DSP-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKP6_DSP-VTREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_RFKP6_DSP-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKP6_DSP-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field XBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKP6_DSP-XBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKP6_DSP-XBLNR.
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_RFKP6_DSP_STR, 
BUKRS TYPE STRING,
WAERS TYPE STRING,
ORI_BETRW TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
SPART TYPE STRING,
VTREF TYPE STRING,
XAESP TYPE STRING,
XPYOR TYPE STRING,
XWHPO TYPE STRING,
WHGRP TYPE STRING,
STAKZ TYPE STRING,
C4EYP TYPE STRING,
C4EYE TYPE STRING,
HVTXT TYPE STRING,
TVTXT TYPE STRING,
SPZAH_LST TYPE STRING,
MANSP_LST TYPE STRING,
SPERZ_LST TYPE STRING,
CLRLO_LST TYPE STRING,
KURSF TYPE STRING,
PDTYP TYPE STRING,
ABWTP TYPE STRING,
XBLNR TYPE STRING,
AUGRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKP6_DSP_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_RFKP6_DSP_STR-BUKRS sy-vline 
WA_RFKP6_DSP_STR-WAERS sy-vline 
WA_RFKP6_DSP_STR-ORI_BETRW sy-vline 
WA_RFKP6_DSP_STR-GPART sy-vline 
WA_RFKP6_DSP_STR-VKONT sy-vline 
WA_RFKP6_DSP_STR-HVORG sy-vline 
WA_RFKP6_DSP_STR-TVORG sy-vline 
WA_RFKP6_DSP_STR-SPART sy-vline 
WA_RFKP6_DSP_STR-VTREF sy-vline 
WA_RFKP6_DSP_STR-XAESP sy-vline 
WA_RFKP6_DSP_STR-XPYOR sy-vline 
WA_RFKP6_DSP_STR-XWHPO sy-vline 
WA_RFKP6_DSP_STR-WHGRP sy-vline 
WA_RFKP6_DSP_STR-STAKZ sy-vline 
WA_RFKP6_DSP_STR-C4EYP sy-vline 
WA_RFKP6_DSP_STR-C4EYE sy-vline 
WA_RFKP6_DSP_STR-HVTXT sy-vline 
WA_RFKP6_DSP_STR-TVTXT sy-vline 
WA_RFKP6_DSP_STR-SPZAH_LST sy-vline 
WA_RFKP6_DSP_STR-MANSP_LST sy-vline 
WA_RFKP6_DSP_STR-SPERZ_LST sy-vline 
WA_RFKP6_DSP_STR-CLRLO_LST sy-vline 
WA_RFKP6_DSP_STR-KURSF sy-vline 
WA_RFKP6_DSP_STR-PDTYP sy-vline 
WA_RFKP6_DSP_STR-ABWTP sy-vline 
WA_RFKP6_DSP_STR-XBLNR sy-vline 
WA_RFKP6_DSP_STR-AUGRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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