ABAP Select data from SAP table DFKKRDI_GFN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFKKRDI_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 DFKKRDI_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 DFKKRDI_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_DFKKRDI_GFN TYPE STANDARD TABLE OF DFKKRDI_GFN,
      WA_DFKKRDI_GFN TYPE DFKKRDI_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: <DFKKRDI_GFN> TYPE DFKKRDI_GFN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKRDI_GFN
*  INTO TABLE @DATA(IT_DFKKRDI_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_DFKKRDI_GFN INDEX 1 INTO DATA(WA_DFKKRDI_GFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKRDI_GFN>-CAMASSRUNDATE = 1.
<DFKKRDI_GFN>-CAMASSRUNID = 1.
<DFKKRDI_GFN>-CAREVENUEDISTRFINALRECIPIENT = 1.
<DFKKRDI_GFN>-CADOCUMENTNUMBER = 1.
<DFKKRDI_GFN>-CAREPETITIONITEMNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKRDI_GFN-CABPITEMNUMBER, sy-vline,
  WA_DFKKRDI_GFN-CASUBITEMNUMBER, sy-vline,
  WA_DFKKRDI_GFN-CAREVENUEDISTRCORRECTIONSTATUS, sy-vline,
  WA_DFKKRDI_GFN-CAREVENUEDISTRDOCUMENT, sy-vline,
  WA_DFKKRDI_GFN-BUSINESSPARTNER, sy-vline,
  WA_DFKKRDI_GFN-CONTRACTACCOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKRDI_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_DFKKRDI_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_DFKKRDI_GFN INTO WA_DFKKRDI_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DFKKRDI_GFN_STR, 
CAMASSRUNDATE TYPE STRING,
CAMASSRUNID TYPE STRING,
CAREVENUEDISTRFINALRECIPIENT TYPE STRING,
CADOCUMENTNUMBER TYPE STRING,
CAREPETITIONITEMNUMBER TYPE STRING,
CABPITEMNUMBER TYPE STRING,
CASUBITEMNUMBER TYPE STRING,
CAREVENUEDISTRCORRECTIONSTATUS TYPE STRING,
CAREVENUEDISTRDOCUMENT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CACONTRACT TYPE STRING,
CAPROVIDERCONTRACTITEMNUMBER TYPE STRING,
CAREFERENCEDOCUMENT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CAMAINTRANSACTION TYPE STRING,
CASUBTRANSACTION TYPE STRING,
CASUBAPPLICATION TYPE STRING,
CAREVNDISTRHASSINGLEDOCPOSTING TYPE STRING,
CAREVENUEDISTRPOSTGISNEGATIVE TYPE STRING,
CAORIGINALAMOUNTINTRANSCRCY TYPE STRING,
CAACCOUNTDETERMINATIONCODE TYPE STRING,
CAREVENUEDISTRCATEGORY TYPE STRING,
CAREVENUEDISTRIBUTIONUUID TYPE STRING,
CAREVENUEDISTRIBUTIONPERIOD TYPE STRING,
CAREVENUEDISTRDOCUMENTUUID TYPE STRING,
CAREVNDISTRHASAGGREGATEDPOSTG TYPE STRING,
CAISINCLDINAGGRGDREVNDISTRINFO TYPE STRING,
CAREVENUEDISTRISREVERSED TYPE STRING,
COMPANYCODE TYPE STRING,
CAORIGINALMAINTRANSACTION TYPE STRING,
CAORIGINALSUBTRANSACTION TYPE STRING,
CAREVENUEDISTRIBUTIONGROUP TYPE STRING,
CAREVNDISTRAPPLPERIODCODE TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
CAPOSTINGMASSRUNDATE TYPE STRING,
CAPOSTINGMASSRUNID TYPE STRING,
CADOCUMENTCREATIONDATE TYPE STRING,
CADOCUMENTCREATIONTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKRDI_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_DFKKRDI_GFN_STR-CAMASSRUNDATE sy-vline 
WA_DFKKRDI_GFN_STR-CAMASSRUNID sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRFINALRECIPIENT sy-vline 
WA_DFKKRDI_GFN_STR-CADOCUMENTNUMBER sy-vline 
WA_DFKKRDI_GFN_STR-CAREPETITIONITEMNUMBER sy-vline 
WA_DFKKRDI_GFN_STR-CABPITEMNUMBER sy-vline 
WA_DFKKRDI_GFN_STR-CASUBITEMNUMBER sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRCORRECTIONSTATUS sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRDOCUMENT sy-vline 
WA_DFKKRDI_GFN_STR-BUSINESSPARTNER sy-vline 
WA_DFKKRDI_GFN_STR-CONTRACTACCOUNT sy-vline 
WA_DFKKRDI_GFN_STR-CACONTRACT sy-vline 
WA_DFKKRDI_GFN_STR-CAPROVIDERCONTRACTITEMNUMBER sy-vline 
WA_DFKKRDI_GFN_STR-CAREFERENCEDOCUMENT sy-vline 
WA_DFKKRDI_GFN_STR-TRANSACTIONCURRENCY sy-vline 
WA_DFKKRDI_GFN_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_DFKKRDI_GFN_STR-CAMAINTRANSACTION sy-vline 
WA_DFKKRDI_GFN_STR-CASUBTRANSACTION sy-vline 
WA_DFKKRDI_GFN_STR-CASUBAPPLICATION sy-vline 
WA_DFKKRDI_GFN_STR-CAREVNDISTRHASSINGLEDOCPOSTING sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRPOSTGISNEGATIVE sy-vline 
WA_DFKKRDI_GFN_STR-CAORIGINALAMOUNTINTRANSCRCY sy-vline 
WA_DFKKRDI_GFN_STR-CAACCOUNTDETERMINATIONCODE sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRCATEGORY sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRIBUTIONUUID sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRIBUTIONPERIOD sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRDOCUMENTUUID sy-vline 
WA_DFKKRDI_GFN_STR-CAREVNDISTRHASAGGREGATEDPOSTG sy-vline 
WA_DFKKRDI_GFN_STR-CAISINCLDINAGGRGDREVNDISTRINFO sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRISREVERSED sy-vline 
WA_DFKKRDI_GFN_STR-COMPANYCODE sy-vline 
WA_DFKKRDI_GFN_STR-CAORIGINALMAINTRANSACTION sy-vline 
WA_DFKKRDI_GFN_STR-CAORIGINALSUBTRANSACTION sy-vline 
WA_DFKKRDI_GFN_STR-CAREVENUEDISTRIBUTIONGROUP sy-vline 
WA_DFKKRDI_GFN_STR-CAREVNDISTRAPPLPERIODCODE sy-vline 
WA_DFKKRDI_GFN_STR-CREATIONDATE sy-vline 
WA_DFKKRDI_GFN_STR-CREATIONTIME sy-vline 
WA_DFKKRDI_GFN_STR-CAPOSTINGMASSRUNDATE sy-vline 
WA_DFKKRDI_GFN_STR-CAPOSTINGMASSRUNID sy-vline 
WA_DFKKRDI_GFN_STR-CADOCUMENTCREATIONDATE sy-vline 
WA_DFKKRDI_GFN_STR-CADOCUMENTCREATIONTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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