ABAP Select data from SAP table FIN_CFIN_S_DFV_ACC_DOC_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FIN_CFIN_S_DFV_ACC_DOC_ITEM 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 FIN_CFIN_S_DFV_ACC_DOC_ITEM. 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 FIN_CFIN_S_DFV_ACC_DOC_ITEM 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_FIN_CFIN_S_DFV_ACC_DOC_ITEM TYPE STANDARD TABLE OF FIN_CFIN_S_DFV_ACC_DOC_ITEM,
      WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM TYPE FIN_CFIN_S_DFV_ACC_DOC_ITEM,
      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: <FIN_CFIN_S_DFV_ACC_DOC_ITEM> TYPE FIN_CFIN_S_DFV_ACC_DOC_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIN_CFIN_S_DFV_ACC_DOC_ITEM
*  INTO TABLE @DATA(IT_FIN_CFIN_S_DFV_ACC_DOC_ITEM2).
*--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_FIN_CFIN_S_DFV_ACC_DOC_ITEM INDEX 1 INTO DATA(WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIN_CFIN_S_DFV_ACC_DOC_ITEM>-BUKRS = 1.
<FIN_CFIN_S_DFV_ACC_DOC_ITEM>-BELNR = 1.
<FIN_CFIN_S_DFV_ACC_DOC_ITEM>-GJAHR = 1.
<FIN_CFIN_S_DFV_ACC_DOC_ITEM>-AWTYP = 1.
<FIN_CFIN_S_DFV_ACC_DOC_ITEM>-AWREF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-AWORG, sy-vline,
  WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-AWSYS, sy-vline,
  WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-BSTAT, sy-vline,
  WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-BUDAT, sy-vline,
  WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-CPUDT, sy-vline,
  WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-AWKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM 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_FIN_CFIN_S_DFV_ACC_DOC_ITEM 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_FIN_CFIN_S_DFV_ACC_DOC_ITEM INTO WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM-HKONT.
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_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
AWSYS TYPE STRING,
BSTAT TYPE STRING,
BUDAT TYPE STRING,
CPUDT TYPE STRING,
AWKEY TYPE STRING,
GLVOR TYPE STRING,
HKONT TYPE STRING,
SHKZG TYPE STRING,
HWAER TYPE STRING,
DMBTR TYPE STRING,
WAERS TYPE STRING,
WRBTR TYPE STRING,
XNEGP TYPE STRING,
MONAT TYPE STRING,
BAPI_DMBTR TYPE STRING,
BAPI_WRBTR TYPE STRING,
IS_CLEARING_ACCOUNT TYPE STRING,
HWAE2 TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,
GRPCUR_IND TYPE STRING,
BAPI_DMBEA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_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_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-BUKRS sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-BELNR sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-GJAHR sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-AWTYP sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-AWREF sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-AWORG sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-AWSYS sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-BSTAT sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-BUDAT sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-CPUDT sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-AWKEY sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-GLVOR sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-HKONT sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-SHKZG sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-HWAER sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-DMBTR sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-WAERS sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-WRBTR sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-XNEGP sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-MONAT sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-BAPI_DMBTR sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-BAPI_WRBTR sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-IS_CLEARING_ACCOUNT sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-HWAE2 sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-DMBE2 sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-DMBE3 sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-GRPCUR_IND sy-vline 
WA_FIN_CFIN_S_DFV_ACC_DOC_ITEM_STR-BAPI_DMBEA sy-vline      INTO ld_text SEPARATED BY SPACE.

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