ABAP Select data from SAP table DFKKOPCOLL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKOPCOLL
*  INTO TABLE @DATA(IT_DFKKOPCOLL2).
*--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_DFKKOPCOLL INDEX 1 INTO DATA(WA_DFKKOPCOLL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKOPCOLL>-MANDT = 1.
<DFKKOPCOLL>-LAUFI = 1.
<DFKKOPCOLL>-LAUFD = 1.
<DFKKOPCOLL>-INKGP = 1.
<DFKKOPCOLL>-INKPS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKOPCOLL-OPBEL, sy-vline,
  WA_DFKKOPCOLL-OPUPW, sy-vline,
  WA_DFKKOPCOLL-OPUPK, sy-vline,
  WA_DFKKOPCOLL-OPUPZ, sy-vline,
  WA_DFKKOPCOLL-XSIMU, sy-vline,
  WA_DFKKOPCOLL-BUKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKOPCOLL 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_DFKKOPCOLL 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_DFKKOPCOLL INTO WA_DFKKOPCOLL.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field NRZAS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKOPCOLL-NRZAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKOPCOLL-NRZAS.
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_DFKKOPCOLL_STR, 
MANDT TYPE STRING,
LAUFI TYPE STRING,
LAUFD TYPE STRING,
INKGP TYPE STRING,
INKPS TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
XSIMU TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
GPART TYPE STRING,
VTREF TYPE STRING,
VKONT TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
STAKZ TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
WAERS TYPE STRING,
HWAER TYPE STRING,
FAEDN TYPE STRING,
BETRH TYPE STRING,
BETRW TYPE STRING,
AUGRD TYPE STRING,
AGDAT TYPE STRING,
NRZAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKOPCOLL_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_DFKKOPCOLL_STR-MANDT sy-vline 
WA_DFKKOPCOLL_STR-LAUFI sy-vline 
WA_DFKKOPCOLL_STR-LAUFD sy-vline 
WA_DFKKOPCOLL_STR-INKGP sy-vline 
WA_DFKKOPCOLL_STR-INKPS sy-vline 
WA_DFKKOPCOLL_STR-OPBEL sy-vline 
WA_DFKKOPCOLL_STR-OPUPW sy-vline 
WA_DFKKOPCOLL_STR-OPUPK sy-vline 
WA_DFKKOPCOLL_STR-OPUPZ sy-vline 
WA_DFKKOPCOLL_STR-XSIMU sy-vline 
WA_DFKKOPCOLL_STR-BUKRS sy-vline 
WA_DFKKOPCOLL_STR-GSBER sy-vline 
WA_DFKKOPCOLL_STR-GPART sy-vline 
WA_DFKKOPCOLL_STR-VTREF sy-vline 
WA_DFKKOPCOLL_STR-VKONT sy-vline 
WA_DFKKOPCOLL_STR-HVORG sy-vline 
WA_DFKKOPCOLL_STR-TVORG sy-vline 
WA_DFKKOPCOLL_STR-STAKZ sy-vline 
WA_DFKKOPCOLL_STR-BLDAT sy-vline 
WA_DFKKOPCOLL_STR-BUDAT sy-vline 
WA_DFKKOPCOLL_STR-WAERS sy-vline 
WA_DFKKOPCOLL_STR-HWAER sy-vline 
WA_DFKKOPCOLL_STR-FAEDN sy-vline 
WA_DFKKOPCOLL_STR-BETRH sy-vline 
WA_DFKKOPCOLL_STR-BETRW sy-vline 
WA_DFKKOPCOLL_STR-AUGRD sy-vline 
WA_DFKKOPCOLL_STR-AGDAT sy-vline 
WA_DFKKOPCOLL_STR-NRZAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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