ABAP Select data from SAP table DFKKCOLL_GFN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFKKCOLL_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 DFKKCOLL_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 DFKKCOLL_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_DFKKCOLL_GFN TYPE STANDARD TABLE OF DFKKCOLL_GFN,
      WA_DFKKCOLL_GFN TYPE DFKKCOLL_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: <DFKKCOLL_GFN> TYPE DFKKCOLL_GFN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKCOLL_GFN
*  INTO TABLE @DATA(IT_DFKKCOLL_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_DFKKCOLL_GFN INDEX 1 INTO DATA(WA_DFKKCOLL_GFN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKCOLL_GFN>-CADOCUMENTNUMBER = 1.
<DFKKCOLL_GFN>-CAGRPGCODEFORTRANSFTOCOLLAGCY = 1.
<DFKKCOLL_GFN>-CACOLLECTIONAGENCY = 1.
<DFKKCOLL_GFN>-COMPANYCODE = 1.
<DFKKCOLL_GFN>-BUSINESSPARTNER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKCOLL_GFN-CONTRACTACCOUNT, sy-vline,
  WA_DFKKCOLL_GFN-CADATEOFTRANSFERTOCOLLAGCY, sy-vline,
  WA_DFKKCOLL_GFN-CAREASONFORTRANSFERTOCOLLAGCY, sy-vline,
  WA_DFKKCOLL_GFN-TRANSACTIONCURRENCY, sy-vline,
  WA_DFKKCOLL_GFN-CAAMOUNTINTRANSACTIONCURRENCY, sy-vline,
  WA_DFKKCOLL_GFN-CAPAYMENTAMOUNTINTRANSCURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKCOLL_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_DFKKCOLL_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_DFKKCOLL_GFN INTO WA_DFKKCOLL_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_DFKKCOLL_GFN-CADOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKCOLL_GFN-CADOCUMENTNUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field CAPAYMENTFORMNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKCOLL_GFN-CAPAYMENTFORMNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKCOLL_GFN-CAPAYMENTFORMNUMBER.
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_DFKKCOLL_GFN_STR, 
CADOCUMENTNUMBER TYPE STRING,
CAGRPGCODEFORTRANSFTOCOLLAGCY TYPE STRING,
CACOLLECTIONAGENCY TYPE STRING,
COMPANYCODE TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CADATEOFTRANSFERTOCOLLAGCY TYPE STRING,
CAREASONFORTRANSFERTOCOLLAGCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CAPAYMENTAMOUNTINTRANSCURRENCY TYPE STRING,
CANONCOLLECTABLEAMOUNT TYPE STRING,
CAINTRSTRECEIVABLEFROMCOLLAGCY TYPE STRING,
CACHARGERECEIVABLEFROMCOLLAGCY TYPE STRING,
CAREFERENCEDOCUMENT TYPE STRING,
CATRANSFERTOCOLLAGCYSTATUS TYPE STRING,
CATRNSFDITMISSOLDTOCOLLAGCY TYPE STRING,
CAPAYMENTFORMNUMBER TYPE STRING,
CARECEIVABLERECALLDATE TYPE STRING,
CARECEIVABLERECALLREASON TYPE STRING,
CACOLLECTIONEXTERNALREFERENCE TYPE STRING,
CACOLOCATIONGROUPFORBUSPARTNER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKCOLL_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_DFKKCOLL_GFN_STR-CADOCUMENTNUMBER sy-vline 
WA_DFKKCOLL_GFN_STR-CAGRPGCODEFORTRANSFTOCOLLAGCY sy-vline 
WA_DFKKCOLL_GFN_STR-CACOLLECTIONAGENCY sy-vline 
WA_DFKKCOLL_GFN_STR-COMPANYCODE sy-vline 
WA_DFKKCOLL_GFN_STR-BUSINESSPARTNER sy-vline 
WA_DFKKCOLL_GFN_STR-CONTRACTACCOUNT sy-vline 
WA_DFKKCOLL_GFN_STR-CADATEOFTRANSFERTOCOLLAGCY sy-vline 
WA_DFKKCOLL_GFN_STR-CAREASONFORTRANSFERTOCOLLAGCY sy-vline 
WA_DFKKCOLL_GFN_STR-TRANSACTIONCURRENCY sy-vline 
WA_DFKKCOLL_GFN_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_DFKKCOLL_GFN_STR-CAPAYMENTAMOUNTINTRANSCURRENCY sy-vline 
WA_DFKKCOLL_GFN_STR-CANONCOLLECTABLEAMOUNT sy-vline 
WA_DFKKCOLL_GFN_STR-CAINTRSTRECEIVABLEFROMCOLLAGCY sy-vline 
WA_DFKKCOLL_GFN_STR-CACHARGERECEIVABLEFROMCOLLAGCY sy-vline 
WA_DFKKCOLL_GFN_STR-CAREFERENCEDOCUMENT sy-vline 
WA_DFKKCOLL_GFN_STR-CATRANSFERTOCOLLAGCYSTATUS sy-vline 
WA_DFKKCOLL_GFN_STR-CATRNSFDITMISSOLDTOCOLLAGCY sy-vline 
WA_DFKKCOLL_GFN_STR-CAPAYMENTFORMNUMBER sy-vline 
WA_DFKKCOLL_GFN_STR-CARECEIVABLERECALLDATE sy-vline 
WA_DFKKCOLL_GFN_STR-CARECEIVABLERECALLREASON sy-vline 
WA_DFKKCOLL_GFN_STR-CACOLLECTIONEXTERNALREFERENCE sy-vline 
WA_DFKKCOLL_GFN_STR-CACOLOCATIONGROUPFORBUSPARTNER sy-vline      INTO ld_text SEPARATED BY SPACE.

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