ABAP Select data from SAP table DFKKFAR_GFN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKFAR_GFN
*  INTO TABLE @DATA(IT_DFKKFAR_GFN2).
*--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_DFKKFAR_GFN INDEX 1 INTO DATA(WA_DFKKFAR_GFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKFAR_GFN>-CADOCUMENTNUMBER = 1.
<DFKKFAR_GFN>-CAREPETITIONITEMNUMBER = 1.
<DFKKFAR_GFN>-CABPITEMNUMBER = 1.
<DFKKFAR_GFN>-CAFACTORINGITEM = 1.
<DFKKFAR_GFN>-CAFACTORINGRESPONSERUNDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKFAR_GFN-CAFACTORINGRESPONSERUNID, sy-vline,
  WA_DFKKFAR_GFN-FACTORINGRESPONSECREATEDBYUSER, sy-vline,
  WA_DFKKFAR_GFN-FACTORINGRESPONSECREATIONDATE, sy-vline,
  WA_DFKKFAR_GFN-FACTORINGRESPONSECREATIONTIME, sy-vline,
  WA_DFKKFAR_GFN-CACURRENTFACTORINGSTATUSOFRBL, sy-vline,
  WA_DFKKFAR_GFN-CAFACTORINGRESPONSEREASON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKFAR_GFN 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_DFKKFAR_GFN 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_DFKKFAR_GFN INTO WA_DFKKFAR_GFN.


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

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

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

*Conversion exit ALPHA, internal->external for field CACONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKFAR_GFN-CACONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKFAR_GFN-CACONTRACT.
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_DFKKFAR_GFN_STR, 
CADOCUMENTNUMBER TYPE STRING,
CAREPETITIONITEMNUMBER TYPE STRING,
CABPITEMNUMBER TYPE STRING,
CAFACTORINGITEM TYPE STRING,
CAFACTORINGRESPONSERUNDATE TYPE STRING,
CAFACTORINGRESPONSERUNID TYPE STRING,
FACTORINGRESPONSECREATEDBYUSER TYPE STRING,
FACTORINGRESPONSECREATIONDATE TYPE STRING,
FACTORINGRESPONSECREATIONTIME TYPE STRING,
CACURRENTFACTORINGSTATUSOFRBL TYPE STRING,
CAFACTORINGRESPONSEREASON TYPE STRING,
COMMISSIONHASALTVPCTGRATE TYPE STRING,
CAFACTORINGCOMMISSIONPCTRATE TYPE STRING,
IMMEDIATEPAYTHASALTVPCTGRATE TYPE STRING,
CAFACTORINGIMMEDIATEPAYTRATE TYPE STRING,
CAFACTORINGRESPONSESTATUS TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CACONTRACT TYPE STRING,
CASUBAPPLICATION TYPE STRING,
CAFACTORINGCOMPANY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKFAR_GFN_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_DFKKFAR_GFN_STR-CADOCUMENTNUMBER sy-vline 
WA_DFKKFAR_GFN_STR-CAREPETITIONITEMNUMBER sy-vline 
WA_DFKKFAR_GFN_STR-CABPITEMNUMBER sy-vline 
WA_DFKKFAR_GFN_STR-CAFACTORINGITEM sy-vline 
WA_DFKKFAR_GFN_STR-CAFACTORINGRESPONSERUNDATE sy-vline 
WA_DFKKFAR_GFN_STR-CAFACTORINGRESPONSERUNID sy-vline 
WA_DFKKFAR_GFN_STR-FACTORINGRESPONSECREATEDBYUSER sy-vline 
WA_DFKKFAR_GFN_STR-FACTORINGRESPONSECREATIONDATE sy-vline 
WA_DFKKFAR_GFN_STR-FACTORINGRESPONSECREATIONTIME sy-vline 
WA_DFKKFAR_GFN_STR-CACURRENTFACTORINGSTATUSOFRBL sy-vline 
WA_DFKKFAR_GFN_STR-CAFACTORINGRESPONSEREASON sy-vline 
WA_DFKKFAR_GFN_STR-COMMISSIONHASALTVPCTGRATE sy-vline 
WA_DFKKFAR_GFN_STR-CAFACTORINGCOMMISSIONPCTRATE sy-vline 
WA_DFKKFAR_GFN_STR-IMMEDIATEPAYTHASALTVPCTGRATE sy-vline 
WA_DFKKFAR_GFN_STR-CAFACTORINGIMMEDIATEPAYTRATE sy-vline 
WA_DFKKFAR_GFN_STR-CAFACTORINGRESPONSESTATUS sy-vline 
WA_DFKKFAR_GFN_STR-BUSINESSPARTNER sy-vline 
WA_DFKKFAR_GFN_STR-CONTRACTACCOUNT sy-vline 
WA_DFKKFAR_GFN_STR-CACONTRACT sy-vline 
WA_DFKKFAR_GFN_STR-CASUBAPPLICATION sy-vline 
WA_DFKKFAR_GFN_STR-CAFACTORINGCOMPANY sy-vline      INTO ld_text SEPARATED BY SPACE.

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