ABAP Select data from SAP table DFKKRK_GFN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFKKRK_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 DFKKRK_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 DFKKRK_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_DFKKRK_GFN TYPE STANDARD TABLE OF DFKKRK_GFN,
      WA_DFKKRK_GFN TYPE DFKKRK_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: <DFKKRK_GFN> TYPE DFKKRK_GFN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKRK_GFN
*  INTO TABLE @DATA(IT_DFKKRK_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_DFKKRK_GFN INDEX 1 INTO DATA(WA_DFKKRK_GFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKRK_GFN>-CARETURNLOT = 1.
<DFKKRK_GFN>-CARETURNLOTSEARCHTERM = 1.
<DFKKRK_GFN>-CADOCUMENTORIGINCODE = 1.
<DFKKRK_GFN>-CARECONCILIATIONKEY = 1.
<DFKKRK_GFN>-CARETURNBANKCLEARINGACCOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKRK_GFN-CACHARGEEXPENSEACCOUNT, sy-vline,
  WA_DFKKRK_GFN-CACHARGEREVENUEACCOUNT, sy-vline,
  WA_DFKKRK_GFN-COMPANYCODE, sy-vline,
  WA_DFKKRK_GFN-BUSINESSAREA, sy-vline,
  WA_DFKKRK_GFN-PROFITCENTER, sy-vline,
  WA_DFKKRK_GFN-CADOCUMENTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKRK_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_DFKKRK_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_DFKKRK_GFN INTO WA_DFKKRK_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 CARETURNBANKCLEARINGACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRK_GFN-CARETURNBANKCLEARINGACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRK_GFN-CARETURNBANKCLEARINGACCOUNT.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit EXCRT, internal->external for field CAEXCHANGERATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_DFKKRK_GFN-CAEXCHANGERATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKRK_GFN-CAEXCHANGERATE.
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_DFKKRK_GFN_STR, 
CARETURNLOT TYPE STRING,
CARETURNLOTSEARCHTERM TYPE STRING,
CADOCUMENTORIGINCODE TYPE STRING,
CARECONCILIATIONKEY TYPE STRING,
CARETURNBANKCLEARINGACCOUNT TYPE STRING,
CACHARGEEXPENSEACCOUNT TYPE STRING,
CACHARGEREVENUEACCOUNT TYPE STRING,
COMPANYCODE TYPE STRING,
BUSINESSAREA TYPE STRING,
PROFITCENTER TYPE STRING,
CADOCUMENTTYPE TYPE STRING,
CURRENCY TYPE STRING,
CAEXCHANGERATE TYPE STRING,
CAPOSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
VALUEDATE TYPE STRING,
CAISSEPARATELINEITEMINGL TYPE STRING,
CACLEARINGREASON TYPE STRING,
CAFIRSTSELECTIONCATEGORY TYPE STRING,
CANUMBEROFRETURNLOTITEMS TYPE STRING,
TOTALDEBITAMOUNT TYPE STRING,
TOTALCREDITAMOUNT TYPE STRING,
TOTALAMOUNTCURRENCY TYPE STRING,
CREATEDBYUSERID TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATE TYPE STRING,
LASTCHANGETIME TYPE STRING,
CARETURNLOTSTATUS TYPE STRING,
BANKCHARGEISINCLUDINGTAX TYPE STRING,
RETURNAMOUNTISINCLBANKCHARGE TYPE STRING,
TAXCODEFORFIRSTBANKCHARGE TYPE STRING,
TAXCODEFORSECONDBANKCHARGE TYPE STRING,
TAXCODEFORFIRSTRETURNCHARGE TYPE STRING,
TAXCODEFORSECONDRETURNCHARGE TYPE STRING,
BANKCOUNTRY TYPE STRING,
CABANKNUMBEROFBUSINESSPARTNER TYPE STRING,
CABANKACCOUNTNUMBEROFBUSPART TYPE STRING,
HOUSEBANK TYPE STRING,
HOUSEBANKACCOUNT TYPE STRING,
CHARGESARECALCULATEDAUTOMLY TYPE STRING,
CHARGESOVERTOLLIMITAREACCEPTED TYPE STRING,
CAPOSTINGTYPEOFRETURN TYPE STRING,
CASPECIFIEDLOTDEBITTOTALAMOUNT TYPE STRING,
CASPECIFIEDLOTCREDITTOTALAMT TYPE STRING,
CASPECIFIEDNUMBEROFITEMSINLOT TYPE STRING,
CAENHANCEDRETURNPROCGISACTIVE TYPE STRING,
CARETURNREASON TYPE STRING,
CAORIGINOFAUTOMLYCRTEDRETSLOT TYPE STRING,
TAXCOUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKRK_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_DFKKRK_GFN_STR-CARETURNLOT sy-vline 
WA_DFKKRK_GFN_STR-CARETURNLOTSEARCHTERM sy-vline 
WA_DFKKRK_GFN_STR-CADOCUMENTORIGINCODE sy-vline 
WA_DFKKRK_GFN_STR-CARECONCILIATIONKEY sy-vline 
WA_DFKKRK_GFN_STR-CARETURNBANKCLEARINGACCOUNT sy-vline 
WA_DFKKRK_GFN_STR-CACHARGEEXPENSEACCOUNT sy-vline 
WA_DFKKRK_GFN_STR-CACHARGEREVENUEACCOUNT sy-vline 
WA_DFKKRK_GFN_STR-COMPANYCODE sy-vline 
WA_DFKKRK_GFN_STR-BUSINESSAREA sy-vline 
WA_DFKKRK_GFN_STR-PROFITCENTER sy-vline 
WA_DFKKRK_GFN_STR-CADOCUMENTTYPE sy-vline 
WA_DFKKRK_GFN_STR-CURRENCY sy-vline 
WA_DFKKRK_GFN_STR-CAEXCHANGERATE sy-vline 
WA_DFKKRK_GFN_STR-CAPOSTINGDATE sy-vline 
WA_DFKKRK_GFN_STR-DOCUMENTDATE sy-vline 
WA_DFKKRK_GFN_STR-VALUEDATE sy-vline 
WA_DFKKRK_GFN_STR-CAISSEPARATELINEITEMINGL sy-vline 
WA_DFKKRK_GFN_STR-CACLEARINGREASON sy-vline 
WA_DFKKRK_GFN_STR-CAFIRSTSELECTIONCATEGORY sy-vline 
WA_DFKKRK_GFN_STR-CANUMBEROFRETURNLOTITEMS sy-vline 
WA_DFKKRK_GFN_STR-TOTALDEBITAMOUNT sy-vline 
WA_DFKKRK_GFN_STR-TOTALCREDITAMOUNT sy-vline 
WA_DFKKRK_GFN_STR-TOTALAMOUNTCURRENCY sy-vline 
WA_DFKKRK_GFN_STR-CREATEDBYUSERID sy-vline 
WA_DFKKRK_GFN_STR-CREATIONDATE sy-vline 
WA_DFKKRK_GFN_STR-CREATIONTIME sy-vline 
WA_DFKKRK_GFN_STR-LASTCHANGEDBYUSER sy-vline 
WA_DFKKRK_GFN_STR-LASTCHANGEDATE sy-vline 
WA_DFKKRK_GFN_STR-LASTCHANGETIME sy-vline 
WA_DFKKRK_GFN_STR-CARETURNLOTSTATUS sy-vline 
WA_DFKKRK_GFN_STR-BANKCHARGEISINCLUDINGTAX sy-vline 
WA_DFKKRK_GFN_STR-RETURNAMOUNTISINCLBANKCHARGE sy-vline 
WA_DFKKRK_GFN_STR-TAXCODEFORFIRSTBANKCHARGE sy-vline 
WA_DFKKRK_GFN_STR-TAXCODEFORSECONDBANKCHARGE sy-vline 
WA_DFKKRK_GFN_STR-TAXCODEFORFIRSTRETURNCHARGE sy-vline 
WA_DFKKRK_GFN_STR-TAXCODEFORSECONDRETURNCHARGE sy-vline 
WA_DFKKRK_GFN_STR-BANKCOUNTRY sy-vline 
WA_DFKKRK_GFN_STR-CABANKNUMBEROFBUSINESSPARTNER sy-vline 
WA_DFKKRK_GFN_STR-CABANKACCOUNTNUMBEROFBUSPART sy-vline 
WA_DFKKRK_GFN_STR-HOUSEBANK sy-vline 
WA_DFKKRK_GFN_STR-HOUSEBANKACCOUNT sy-vline 
WA_DFKKRK_GFN_STR-CHARGESARECALCULATEDAUTOMLY sy-vline 
WA_DFKKRK_GFN_STR-CHARGESOVERTOLLIMITAREACCEPTED sy-vline 
WA_DFKKRK_GFN_STR-CAPOSTINGTYPEOFRETURN sy-vline 
WA_DFKKRK_GFN_STR-CASPECIFIEDLOTDEBITTOTALAMOUNT sy-vline 
WA_DFKKRK_GFN_STR-CASPECIFIEDLOTCREDITTOTALAMT sy-vline 
WA_DFKKRK_GFN_STR-CASPECIFIEDNUMBEROFITEMSINLOT sy-vline 
WA_DFKKRK_GFN_STR-CAENHANCEDRETURNPROCGISACTIVE sy-vline 
WA_DFKKRK_GFN_STR-CARETURNREASON sy-vline 
WA_DFKKRK_GFN_STR-CAORIGINOFAUTOMLYCRTEDRETSLOT sy-vline 
WA_DFKKRK_GFN_STR-TAXCOUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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