ABAP Select data from SAP table DFKKFWKORRN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKFWKORRN
*  INTO TABLE @DATA(IT_DFKKFWKORRN2).
*--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_DFKKFWKORRN INDEX 1 INTO DATA(WA_DFKKFWKORRN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKFWKORRN>-MANDT = 1.
<DFKKFWKORRN>-BUKRS = 1.
<DFKKFWKORRN>-BWVAR = 1.
<DFKKFWKORRN>-CURTP = 1.
<DFKKFWKORRN>-BWDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKFWKORRN-KHASH, sy-vline,
  WA_DFKKFWKORRN-HWTYP, sy-vline,
  WA_DFKKFWKORRN-WAERS, sy-vline,
  WA_DFKKFWKORRN-HKONT, sy-vline,
  WA_DFKKFWKORRN-GSBER, sy-vline,
  WA_DFKKFWKORRN-SEGMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKFWKORRN 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_DFKKFWKORRN 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_DFKKFWKORRN INTO WA_DFKKFWKORRN.


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

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

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

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

*Conversion exit ALPHA, internal->external for field KONTH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKFWKORRN-KONTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKFWKORRN-KONTH.
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_DFKKFWKORRN_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BWVAR TYPE STRING,
CURTP TYPE STRING,
BWDAT TYPE STRING,
KHASH TYPE STRING,
HWTYP TYPE STRING,
WAERS TYPE STRING,
HKONT TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
LDGRP TYPE STRING,
KONTS TYPE STRING,
KONTH TYPE STRING,
BETRH TYPE STRING,
BEARBD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKFWKORRN_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_DFKKFWKORRN_STR-MANDT sy-vline 
WA_DFKKFWKORRN_STR-BUKRS sy-vline 
WA_DFKKFWKORRN_STR-BWVAR sy-vline 
WA_DFKKFWKORRN_STR-CURTP sy-vline 
WA_DFKKFWKORRN_STR-BWDAT sy-vline 
WA_DFKKFWKORRN_STR-KHASH sy-vline 
WA_DFKKFWKORRN_STR-HWTYP sy-vline 
WA_DFKKFWKORRN_STR-WAERS sy-vline 
WA_DFKKFWKORRN_STR-HKONT sy-vline 
WA_DFKKFWKORRN_STR-GSBER sy-vline 
WA_DFKKFWKORRN_STR-SEGMENT sy-vline 
WA_DFKKFWKORRN_STR-PRCTR sy-vline 
WA_DFKKFWKORRN_STR-LDGRP sy-vline 
WA_DFKKFWKORRN_STR-KONTS sy-vline 
WA_DFKKFWKORRN_STR-KONTH sy-vline 
WA_DFKKFWKORRN_STR-BETRH sy-vline 
WA_DFKKFWKORRN_STR-BEARBD sy-vline      INTO ld_text SEPARATED BY SPACE.

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