ABAP Select data from SAP table DFKKOPKC_GFN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFKKOPKC_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 DFKKOPKC_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 DFKKOPKC_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_DFKKOPKC_GFN TYPE STANDARD TABLE OF DFKKOPKC_GFN,
      WA_DFKKOPKC_GFN TYPE DFKKOPKC_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: <DFKKOPKC_GFN> TYPE DFKKOPKC_GFN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKOPKC_GFN
*  INTO TABLE @DATA(IT_DFKKOPKC_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_DFKKOPKC_GFN INDEX 1 INTO DATA(WA_DFKKOPKC_GFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKOPKC_GFN>-CADOCUMENTNUMBER = 1.
<DFKKOPKC_GFN>-CAGLITEMNUMBER = 1.
<DFKKOPKC_GFN>-PAYMENTCARDTYPE = 1.
<DFKKOPKC_GFN>-PAYTCARDBYDIGITALPAYMENTSRVC = 1.
<DFKKOPKC_GFN>-PAYMENTCARDSEQUENCENUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKOPKC_GFN-PAYMENTCARDVALIDITYSTARTDATE, sy-vline,
  WA_DFKKOPKC_GFN-PAYMENTCARDVALIDITYENDDATE, sy-vline,
  WA_DFKKOPKC_GFN-PAYMENTCARDHOLDERNAME, sy-vline,
  WA_DFKKOPKC_GFN-CAAUTHZNBYDIGITALPAYTSRVC, sy-vline,
  WA_DFKKOPKC_GFN-CAAUTHORIZATIONBYACQUIRER, sy-vline,
  WA_DFKKOPKC_GFN-AUTHORIZATIONDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKOPKC_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_DFKKOPKC_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_DFKKOPKC_GFN INTO WA_DFKKOPKC_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_DFKKOPKC_GFN-CADOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKOPKC_GFN-CADOCUMENTNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CASETTLEMENTDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKOPKC_GFN-CASETTLEMENTDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKOPKC_GFN-CASETTLEMENTDOCUMENT.
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_DFKKOPKC_GFN_STR, 
CADOCUMENTNUMBER TYPE STRING,
CAGLITEMNUMBER TYPE STRING,
PAYMENTCARDTYPE TYPE STRING,
PAYTCARDBYDIGITALPAYMENTSRVC TYPE STRING,
PAYMENTCARDSEQUENCENUMBER TYPE STRING,
PAYMENTCARDVALIDITYSTARTDATE TYPE STRING,
PAYMENTCARDVALIDITYENDDATE TYPE STRING,
PAYMENTCARDHOLDERNAME TYPE STRING,
CAAUTHZNBYDIGITALPAYTSRVC TYPE STRING,
CAAUTHORIZATIONBYACQUIRER TYPE STRING,
AUTHORIZATIONDATE TYPE STRING,
AUTHORIZATIONTIME TYPE STRING,
CAAUTHORIZATIONTYPE TYPE STRING,
AUTHORIZEDAMOUNTINAUTHZNCRCY TYPE STRING,
AUTHORIZATIONCURRENCY TYPE STRING,
MERCHANTBYCLEARINGHOUSE TYPE STRING,
AUTHORIZATIONEXPIRATIONDATE TYPE STRING,
AUTHORIZATIONEXPIRATIONTIME TYPE STRING,
CAPAYMENTIDAUTHZNWITHBILLING TYPE STRING,
CAPOSTINGDATE TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
COMPANYCODE TYPE STRING,
VALUEDATE TYPE STRING,
CAPAYMENTBILLINGSTATUS TYPE STRING,
CASETTLEMENTMASSRUNID TYPE STRING,
CASETTLEMENTDOCUMENT TYPE STRING,
CAPAYTCARDSUPPLEMENTISRESENT TYPE STRING,
CARETURNLOT TYPE STRING,
CARETURNREASON TYPE STRING,
CASETTLEMENTCHARGEAMOUNTINTC TYPE STRING,
CAPAYMENTCARDSETTLEMENTID TYPE STRING,
CASETTLMTAMOUNTINSETTLMTCRCY TYPE STRING,
SETTLEMENTCURRENCY TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
PAYMENTCARDUUID TYPE STRING,
ENCRYPTIONTYPE TYPE STRING,
CAKEYFORPAYMENTCARDSUPPLEMENT TYPE STRING,
CASUBAREAFORPARALLELIZATION TYPE STRING,
PAYMENTSERVICEPROVIDER TYPE STRING,
PAYMENTREFBYPAYTSRVCPROVIDER TYPE STRING,
ORIGLPAYTREFBYPAYTSRVCPROVIDER TYPE STRING,
ORIGINALSOURCEOFCREDIT TYPE STRING,
PAYMENTCARDMASKEDNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKOPKC_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_DFKKOPKC_GFN_STR-CADOCUMENTNUMBER sy-vline 
WA_DFKKOPKC_GFN_STR-CAGLITEMNUMBER sy-vline 
WA_DFKKOPKC_GFN_STR-PAYMENTCARDTYPE sy-vline 
WA_DFKKOPKC_GFN_STR-PAYTCARDBYDIGITALPAYMENTSRVC sy-vline 
WA_DFKKOPKC_GFN_STR-PAYMENTCARDSEQUENCENUMBER sy-vline 
WA_DFKKOPKC_GFN_STR-PAYMENTCARDVALIDITYSTARTDATE sy-vline 
WA_DFKKOPKC_GFN_STR-PAYMENTCARDVALIDITYENDDATE sy-vline 
WA_DFKKOPKC_GFN_STR-PAYMENTCARDHOLDERNAME sy-vline 
WA_DFKKOPKC_GFN_STR-CAAUTHZNBYDIGITALPAYTSRVC sy-vline 
WA_DFKKOPKC_GFN_STR-CAAUTHORIZATIONBYACQUIRER sy-vline 
WA_DFKKOPKC_GFN_STR-AUTHORIZATIONDATE sy-vline 
WA_DFKKOPKC_GFN_STR-AUTHORIZATIONTIME sy-vline 
WA_DFKKOPKC_GFN_STR-CAAUTHORIZATIONTYPE sy-vline 
WA_DFKKOPKC_GFN_STR-AUTHORIZEDAMOUNTINAUTHZNCRCY sy-vline 
WA_DFKKOPKC_GFN_STR-AUTHORIZATIONCURRENCY sy-vline 
WA_DFKKOPKC_GFN_STR-MERCHANTBYCLEARINGHOUSE sy-vline 
WA_DFKKOPKC_GFN_STR-AUTHORIZATIONEXPIRATIONDATE sy-vline 
WA_DFKKOPKC_GFN_STR-AUTHORIZATIONEXPIRATIONTIME sy-vline 
WA_DFKKOPKC_GFN_STR-CAPAYMENTIDAUTHZNWITHBILLING sy-vline 
WA_DFKKOPKC_GFN_STR-CAPOSTINGDATE sy-vline 
WA_DFKKOPKC_GFN_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_DFKKOPKC_GFN_STR-TRANSACTIONCURRENCY sy-vline 
WA_DFKKOPKC_GFN_STR-COMPANYCODE sy-vline 
WA_DFKKOPKC_GFN_STR-VALUEDATE sy-vline 
WA_DFKKOPKC_GFN_STR-CAPAYMENTBILLINGSTATUS sy-vline 
WA_DFKKOPKC_GFN_STR-CASETTLEMENTMASSRUNID sy-vline 
WA_DFKKOPKC_GFN_STR-CASETTLEMENTDOCUMENT sy-vline 
WA_DFKKOPKC_GFN_STR-CAPAYTCARDSUPPLEMENTISRESENT sy-vline 
WA_DFKKOPKC_GFN_STR-CARETURNLOT sy-vline 
WA_DFKKOPKC_GFN_STR-CARETURNREASON sy-vline 
WA_DFKKOPKC_GFN_STR-CASETTLEMENTCHARGEAMOUNTINTC sy-vline 
WA_DFKKOPKC_GFN_STR-CAPAYMENTCARDSETTLEMENTID sy-vline 
WA_DFKKOPKC_GFN_STR-CASETTLMTAMOUNTINSETTLMTCRCY sy-vline 
WA_DFKKOPKC_GFN_STR-SETTLEMENTCURRENCY sy-vline 
WA_DFKKOPKC_GFN_STR-CREATIONDATE sy-vline 
WA_DFKKOPKC_GFN_STR-CREATIONTIME sy-vline 
WA_DFKKOPKC_GFN_STR-CREATEDBYUSER sy-vline 
WA_DFKKOPKC_GFN_STR-PAYMENTCARDUUID sy-vline 
WA_DFKKOPKC_GFN_STR-ENCRYPTIONTYPE sy-vline 
WA_DFKKOPKC_GFN_STR-CAKEYFORPAYMENTCARDSUPPLEMENT sy-vline 
WA_DFKKOPKC_GFN_STR-CASUBAREAFORPARALLELIZATION sy-vline 
WA_DFKKOPKC_GFN_STR-PAYMENTSERVICEPROVIDER sy-vline 
WA_DFKKOPKC_GFN_STR-PAYMENTREFBYPAYTSRVCPROVIDER sy-vline 
WA_DFKKOPKC_GFN_STR-ORIGLPAYTREFBYPAYTSRVCPROVIDER sy-vline 
WA_DFKKOPKC_GFN_STR-ORIGINALSOURCEOFCREDIT sy-vline 
WA_DFKKOPKC_GFN_STR-PAYMENTCARDMASKEDNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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