ABAP Select data from SAP table FKKOPAA_GFN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKKOPAA_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 FKKOPAA_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 FKKOPAA_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_FKKOPAA_GFN TYPE STANDARD TABLE OF FKKOPAA_GFN,
      WA_FKKOPAA_GFN TYPE FKKOPAA_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: <FKKOPAA_GFN> TYPE FKKOPAA_GFN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKOPAA_GFN
*  INTO TABLE @DATA(IT_FKKOPAA_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_FKKOPAA_GFN INDEX 1 INTO DATA(WA_FKKOPAA_GFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKOPAA_GFN>-CADOCUMENTNUMBER = 1.
<FKKOPAA_GFN>-CABPITEMNUMBER = 1.
<FKKOPAA_GFN>-CADOCACCOUNTASSGMTITEMNUMBER = 1.
<FKKOPAA_GFN>-CAAMOUNTINLOCALCURRENCY = 1.
<FKKOPAA_GFN>-CAAMOUNTINTRANSACTIONCURRENCY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKOPAA_GFN-CAAMOUNTINSECONDCURRENCY, sy-vline,
  WA_FKKOPAA_GFN-CAAMOUNTINTHIRDCURRENCY, sy-vline,
  WA_FKKOPAA_GFN-CATAXBASEAMOUNTINLOCALCURRENCY, sy-vline,
  WA_FKKOPAA_GFN-CATAXBASEAMOUNT, sy-vline,
  WA_FKKOPAA_GFN-CAAMOUNTINLOCALCURRENCYTOCLEAR, sy-vline,
  WA_FKKOPAA_GFN-CAAMOUNTINTRANSCURRTOCLEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKOPAA_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_FKKOPAA_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_FKKOPAA_GFN INTO WA_FKKOPAA_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_FKKOPAA_GFN-CADOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOPAA_GFN-CADOCUMENTNUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit FMCIL, internal->external for field COMMITMENTITEM
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FKKOPAA_GFN-COMMITMENTITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOPAA_GFN-COMMITMENTITEM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field ORIGLYEARFORFINMGMTACCTASSGMT
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FKKOPAA_GFN-ORIGLYEARFORFINMGMTACCTASSGMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOPAA_GFN-ORIGLYEARFORFINMGMTACCTASSGMT.
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_FKKOPAA_GFN_STR, 
CADOCUMENTNUMBER TYPE STRING,
CABPITEMNUMBER TYPE STRING,
CADOCACCOUNTASSGMTITEMNUMBER TYPE STRING,
CAAMOUNTINLOCALCURRENCY TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CAAMOUNTINSECONDCURRENCY TYPE STRING,
CAAMOUNTINTHIRDCURRENCY TYPE STRING,
CATAXBASEAMOUNTINLOCALCURRENCY TYPE STRING,
CATAXBASEAMOUNT TYPE STRING,
CAAMOUNTINLOCALCURRENCYTOCLEAR TYPE STRING,
CAAMOUNTINTRANSCURRTOCLEAR TYPE STRING,
CAAMOUNTINSECONDCURRTOCLEAR TYPE STRING,
CAAMOUNTINTHIRDCURRTOCLEAR TYPE STRING,
CATAXBASEAMOUNTINLOCCURRTOCLEA TYPE STRING,
CATAXBASEAMOUNTTOCLEAR TYPE STRING,
BUSINESSAREA TYPE STRING,
SEGMENT TYPE STRING,
PROFITCENTER TYPE STRING,
ORIGINALFINANCIALMGMTAREA TYPE STRING,
COMMITMENTITEM TYPE STRING,
FUNDSCENTER TYPE STRING,
FUND TYPE STRING,
FUNCTIONALAREA TYPE STRING,
FUNDEDPROGRAM TYPE STRING,
GRANT TYPE STRING,
ORIGLYEARFORFINMGMTACCTASSGMT TYPE STRING,
BUDGETPERIOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKOPAA_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_FKKOPAA_GFN_STR-CADOCUMENTNUMBER sy-vline 
WA_FKKOPAA_GFN_STR-CABPITEMNUMBER sy-vline 
WA_FKKOPAA_GFN_STR-CADOCACCOUNTASSGMTITEMNUMBER sy-vline 
WA_FKKOPAA_GFN_STR-CAAMOUNTINLOCALCURRENCY sy-vline 
WA_FKKOPAA_GFN_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_FKKOPAA_GFN_STR-CAAMOUNTINSECONDCURRENCY sy-vline 
WA_FKKOPAA_GFN_STR-CAAMOUNTINTHIRDCURRENCY sy-vline 
WA_FKKOPAA_GFN_STR-CATAXBASEAMOUNTINLOCALCURRENCY sy-vline 
WA_FKKOPAA_GFN_STR-CATAXBASEAMOUNT sy-vline 
WA_FKKOPAA_GFN_STR-CAAMOUNTINLOCALCURRENCYTOCLEAR sy-vline 
WA_FKKOPAA_GFN_STR-CAAMOUNTINTRANSCURRTOCLEAR sy-vline 
WA_FKKOPAA_GFN_STR-CAAMOUNTINSECONDCURRTOCLEAR sy-vline 
WA_FKKOPAA_GFN_STR-CAAMOUNTINTHIRDCURRTOCLEAR sy-vline 
WA_FKKOPAA_GFN_STR-CATAXBASEAMOUNTINLOCCURRTOCLEA sy-vline 
WA_FKKOPAA_GFN_STR-CATAXBASEAMOUNTTOCLEAR sy-vline 
WA_FKKOPAA_GFN_STR-BUSINESSAREA sy-vline 
WA_FKKOPAA_GFN_STR-SEGMENT sy-vline 
WA_FKKOPAA_GFN_STR-PROFITCENTER sy-vline 
WA_FKKOPAA_GFN_STR-ORIGINALFINANCIALMGMTAREA sy-vline 
WA_FKKOPAA_GFN_STR-COMMITMENTITEM sy-vline 
WA_FKKOPAA_GFN_STR-FUNDSCENTER sy-vline 
WA_FKKOPAA_GFN_STR-FUND sy-vline 
WA_FKKOPAA_GFN_STR-FUNCTIONALAREA sy-vline 
WA_FKKOPAA_GFN_STR-FUNDEDPROGRAM sy-vline 
WA_FKKOPAA_GFN_STR-GRANT sy-vline 
WA_FKKOPAA_GFN_STR-ORIGLYEARFORFINMGMTACCTASSGMT sy-vline 
WA_FKKOPAA_GFN_STR-BUDGETPERIOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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