ABAP Select data from SAP table DFKKCFNR into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKCFNR
*  INTO TABLE @DATA(IT_DFKKCFNR2).
*--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_DFKKCFNR INDEX 1 INTO DATA(WA_DFKKCFNR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKCFNR>-MANDT = 1.
<DFKKCFNR>-KEYN1 = 1.
<DFKKCFNR>-POSNA = 1.
<DFKKCFNR>-OPBUK = 1.
<DFKKCFNR>-INSID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKCFNR-FLINS, sy-vline,
  WA_DFKKCFNR-GPART, sy-vline,
  WA_DFKKCFNR-VKONT, sy-vline,
  WA_DFKKCFNR-VTREF, sy-vline,
  WA_DFKKCFNR-SUBAP, sy-vline,
  WA_DFKKCFNR-BKVID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKCFNR 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_DFKKCFNR 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_DFKKCFNR INTO WA_DFKKCFNR.


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

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

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

*Conversion exit ALPHA, internal->external for field ABWBP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKCFNR-ABWBP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKCFNR-ABWBP.
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_DFKKCFNR_STR, 
MANDT TYPE STRING,
KEYN1 TYPE STRING,
POSNA TYPE STRING,
OPBUK TYPE STRING,
INSID TYPE STRING,
FLINS TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
SUBAP TYPE STRING,
BKVID TYPE STRING,
BKVID_DEL TYPE STRING,
ABWBP TYPE STRING,
VALDT TYPE STRING,
XMDCH TYPE STRING,
ERTXT TYPE STRING,
INFOF TYPE STRING,
STATE TYPE STRING,
LOCK_USER TYPE STRING,
LOCK_LIMIT TYPE STRING,
WORKSTATE TYPE STRING,
RESUBMIT_DATE TYPE STRING,
WF_COUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKCFNR_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_DFKKCFNR_STR-MANDT sy-vline 
WA_DFKKCFNR_STR-KEYN1 sy-vline 
WA_DFKKCFNR_STR-POSNA sy-vline 
WA_DFKKCFNR_STR-OPBUK sy-vline 
WA_DFKKCFNR_STR-INSID sy-vline 
WA_DFKKCFNR_STR-FLINS sy-vline 
WA_DFKKCFNR_STR-GPART sy-vline 
WA_DFKKCFNR_STR-VKONT sy-vline 
WA_DFKKCFNR_STR-VTREF sy-vline 
WA_DFKKCFNR_STR-SUBAP sy-vline 
WA_DFKKCFNR_STR-BKVID sy-vline 
WA_DFKKCFNR_STR-BKVID_DEL sy-vline 
WA_DFKKCFNR_STR-ABWBP sy-vline 
WA_DFKKCFNR_STR-VALDT sy-vline 
WA_DFKKCFNR_STR-XMDCH sy-vline 
WA_DFKKCFNR_STR-ERTXT sy-vline 
WA_DFKKCFNR_STR-INFOF sy-vline 
WA_DFKKCFNR_STR-STATE sy-vline 
WA_DFKKCFNR_STR-LOCK_USER sy-vline 
WA_DFKKCFNR_STR-LOCK_LIMIT sy-vline 
WA_DFKKCFNR_STR-WORKSTATE sy-vline 
WA_DFKKCFNR_STR-RESUBMIT_DATE sy-vline 
WA_DFKKCFNR_STR-WF_COUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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