ABAP Select data from SAP table DFKKRP3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFKKRP3 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 DFKKRP3. 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 DFKKRP3 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_DFKKRP3 TYPE STANDARD TABLE OF DFKKRP3,
      WA_DFKKRP3 TYPE DFKKRP3,
      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: <DFKKRP3> TYPE DFKKRP3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DFKKRP3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DFKKRP3
  INTO TABLE IT_DFKKRP3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKRP3
*  INTO TABLE @DATA(IT_DFKKRP32).
*--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_DFKKRP3 INDEX 1 INTO DATA(WA_DFKKRP32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DFKKRP3 ASSIGNING <DFKKRP3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKRP3>-MANDT = 1.
<DFKKRP3>-KEYR1 = 1.
<DFKKRP3>-POSRA = 1.
<DFKKRP3>-LFDNR = 1.
<DFKKRP3>-GPART = 1.

ENDLOOP.

LOOP AT IT_DFKKRP3 INTO WA_DFKKRP3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKRP3-VKONT, sy-vline,
  WA_DFKKRP3-VTREF, sy-vline,
  WA_DFKKRP3-VTPOS, sy-vline,
  WA_DFKKRP3-SEGMENT, sy-vline,
  WA_DFKKRP3-SUBAP, sy-vline,
  WA_DFKKRP3-BUKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKRP3 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_DFKKRP3 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_DFKKRP3 INTO WA_DFKKRP3.


*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_DFKKRP3-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRP3-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRP3-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRP3-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRP3-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRP3-VTREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRP3-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRP3-SEGMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRP3-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRP3-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRP3-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRP3-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRP3-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRP3-FIPEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRP3-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRP3-GRANT_NBR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BUDGETYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRP3-BUDGETYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRP3-BUDGETYEAR.
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_DFKKRP3_STR, 
MANDT TYPE STRING,
KEYR1 TYPE STRING,
POSRA TYPE STRING,
LFDNR TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
VTPOS TYPE STRING,
SEGMENT TYPE STRING,
SUBAP TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
SPART TYPE STRING,
FAEDN TYPE STRING,
MWSKZ TYPE STRING,
BETRW TYPE STRING,
BETRH TYPE STRING,
BETR2 TYPE STRING,
BETR3 TYPE STRING,
KURSF TYPE STRING,
ORIGFIKRS TYPE STRING,
FIPEX TYPE STRING,
FISTL TYPE STRING,
FONDS TYPE STRING,
FKBER TYPE STRING,
MEASURE TYPE STRING,
GRANT_NBR TYPE STRING,
BUDGETYEAR TYPE STRING,
BUDGET_PD TYPE STRING,
TAX_COUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKRP3_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_DFKKRP3_STR-MANDT sy-vline 
WA_DFKKRP3_STR-KEYR1 sy-vline 
WA_DFKKRP3_STR-POSRA sy-vline 
WA_DFKKRP3_STR-LFDNR sy-vline 
WA_DFKKRP3_STR-GPART sy-vline 
WA_DFKKRP3_STR-VKONT sy-vline 
WA_DFKKRP3_STR-VTREF sy-vline 
WA_DFKKRP3_STR-VTPOS sy-vline 
WA_DFKKRP3_STR-SEGMENT sy-vline 
WA_DFKKRP3_STR-SUBAP sy-vline 
WA_DFKKRP3_STR-BUKRS sy-vline 
WA_DFKKRP3_STR-GSBER sy-vline 
WA_DFKKRP3_STR-PRCTR sy-vline 
WA_DFKKRP3_STR-SPART sy-vline 
WA_DFKKRP3_STR-FAEDN sy-vline 
WA_DFKKRP3_STR-MWSKZ sy-vline 
WA_DFKKRP3_STR-BETRW sy-vline 
WA_DFKKRP3_STR-BETRH sy-vline 
WA_DFKKRP3_STR-BETR2 sy-vline 
WA_DFKKRP3_STR-BETR3 sy-vline 
WA_DFKKRP3_STR-KURSF sy-vline 
WA_DFKKRP3_STR-ORIGFIKRS sy-vline 
WA_DFKKRP3_STR-FIPEX sy-vline 
WA_DFKKRP3_STR-FISTL sy-vline 
WA_DFKKRP3_STR-FONDS sy-vline 
WA_DFKKRP3_STR-FKBER sy-vline 
WA_DFKKRP3_STR-MEASURE sy-vline 
WA_DFKKRP3_STR-GRANT_NBR sy-vline 
WA_DFKKRP3_STR-BUDGETYEAR sy-vline 
WA_DFKKRP3_STR-BUDGET_PD sy-vline 
WA_DFKKRP3_STR-TAX_COUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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