ABAP Select data from SAP table DFKKZP_GFN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFKKZP_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 DFKKZP_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 DFKKZP_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_DFKKZP_GFN TYPE STANDARD TABLE OF DFKKZP_GFN,
      WA_DFKKZP_GFN TYPE DFKKZP_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: <DFKKZP_GFN> TYPE DFKKZP_GFN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKZP_GFN
*  INTO TABLE @DATA(IT_DFKKZP_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_DFKKZP_GFN INDEX 1 INTO DATA(WA_DFKKZP_GFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKZP_GFN>-CACARDPAYMENTPROCESSINGCODE = 1.
<DFKKZP_GFN>-CAPAYMENTLOTITEM = 1.
<DFKKZP_GFN>-CAFIRSTSELECTIONCATEGORY = 1.
<DFKKZP_GFN>-CASECONDSELECTIONCATEGORY = 1.
<DFKKZP_GFN>-CATHIRDSELECTIONCATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKZP_GFN-CAFIRSTSELECTIONVALUE, sy-vline,
  WA_DFKKZP_GFN-CASECONDSELECTIONVALUE, sy-vline,
  WA_DFKKZP_GFN-CATHIRDSELECTIONVALUE, sy-vline,
  WA_DFKKZP_GFN-CAPAYMENTAMOUNTINTRANSCURRENCY, sy-vline,
  WA_DFKKZP_GFN-CABANKCLEARINGACCOUNT, sy-vline,
  WA_DFKKZP_GFN-COMPANYCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKZP_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_DFKKZP_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_DFKKZP_GFN INTO WA_DFKKZP_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 CABANKCLEARINGACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKZP_GFN-CABANKCLEARINGACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKZP_GFN-CABANKCLEARINGACCOUNT.
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_DFKKZP_GFN_STR, 
CACARDPAYMENTPROCESSINGCODE TYPE STRING,
CAPAYMENTLOTITEM TYPE STRING,
CAFIRSTSELECTIONCATEGORY TYPE STRING,
CASECONDSELECTIONCATEGORY TYPE STRING,
CATHIRDSELECTIONCATEGORY TYPE STRING,
CAFIRSTSELECTIONVALUE TYPE STRING,
CASECONDSELECTIONVALUE TYPE STRING,
CATHIRDSELECTIONVALUE TYPE STRING,
CAPAYMENTAMOUNTINTRANSCURRENCY TYPE STRING,
CABANKCLEARINGACCOUNT TYPE STRING,
COMPANYCODE TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAPAYMENTISPOSTEDONACCOUNT TYPE STRING,
CAPAYMENTTRANSISTOBECLARIFIED TYPE STRING,
CANOTETOPAYEEINPAYMENT TYPE STRING,
CACHEQUE TYPE STRING,
BANKCOUNTRY TYPE STRING,
BANKNUMBER TYPE STRING,
BANKACCOUNT TYPE STRING,
BANKCONTROLKEY TYPE STRING,
CABANKACCOUNTHOLDERNAME TYPE STRING,
CAISINCLUDEDINCLRFCTNWORKLIST TYPE STRING,
CAADDITIONALPAYMENTINFO TYPE STRING,
CASHORTACCOUNTASSIGNMENT TYPE STRING,
IBAN TYPE STRING,
SWIFTCODE TYPE STRING,
BANKSTATEMENTITEM TYPE STRING,
CASHMANAGEMENTLINK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKZP_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_DFKKZP_GFN_STR-CACARDPAYMENTPROCESSINGCODE sy-vline 
WA_DFKKZP_GFN_STR-CAPAYMENTLOTITEM sy-vline 
WA_DFKKZP_GFN_STR-CAFIRSTSELECTIONCATEGORY sy-vline 
WA_DFKKZP_GFN_STR-CASECONDSELECTIONCATEGORY sy-vline 
WA_DFKKZP_GFN_STR-CATHIRDSELECTIONCATEGORY sy-vline 
WA_DFKKZP_GFN_STR-CAFIRSTSELECTIONVALUE sy-vline 
WA_DFKKZP_GFN_STR-CASECONDSELECTIONVALUE sy-vline 
WA_DFKKZP_GFN_STR-CATHIRDSELECTIONVALUE sy-vline 
WA_DFKKZP_GFN_STR-CAPAYMENTAMOUNTINTRANSCURRENCY sy-vline 
WA_DFKKZP_GFN_STR-CABANKCLEARINGACCOUNT sy-vline 
WA_DFKKZP_GFN_STR-COMPANYCODE sy-vline 
WA_DFKKZP_GFN_STR-TRANSACTIONCURRENCY sy-vline 
WA_DFKKZP_GFN_STR-CAPAYMENTISPOSTEDONACCOUNT sy-vline 
WA_DFKKZP_GFN_STR-CAPAYMENTTRANSISTOBECLARIFIED sy-vline 
WA_DFKKZP_GFN_STR-CANOTETOPAYEEINPAYMENT sy-vline 
WA_DFKKZP_GFN_STR-CACHEQUE sy-vline 
WA_DFKKZP_GFN_STR-BANKCOUNTRY sy-vline 
WA_DFKKZP_GFN_STR-BANKNUMBER sy-vline 
WA_DFKKZP_GFN_STR-BANKACCOUNT sy-vline 
WA_DFKKZP_GFN_STR-BANKCONTROLKEY sy-vline 
WA_DFKKZP_GFN_STR-CABANKACCOUNTHOLDERNAME sy-vline 
WA_DFKKZP_GFN_STR-CAISINCLUDEDINCLRFCTNWORKLIST sy-vline 
WA_DFKKZP_GFN_STR-CAADDITIONALPAYMENTINFO sy-vline 
WA_DFKKZP_GFN_STR-CASHORTACCOUNTASSIGNMENT sy-vline 
WA_DFKKZP_GFN_STR-IBAN sy-vline 
WA_DFKKZP_GFN_STR-SWIFTCODE sy-vline 
WA_DFKKZP_GFN_STR-BANKSTATEMENTITEM sy-vline 
WA_DFKKZP_GFN_STR-CASHMANAGEMENTLINK sy-vline      INTO ld_text SEPARATED BY SPACE.

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