ABAP Select data from SAP table DFKKOPK_SHORT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKOPK_SHORT
*  INTO TABLE @DATA(IT_DFKKOPK_SHORT2).
*--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_DFKKOPK_SHORT INDEX 1 INTO DATA(WA_DFKKOPK_SHORT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKOPK_SHORT>-MANDT = 1.
<DFKKOPK_SHORT>-BUKRS = 1.
<DFKKOPK_SHORT>-GJAHR = 1.
<DFKKOPK_SHORT>-OPBEL = 1.
<DFKKOPK_SHORT>-OPUPK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKOPK_SHORT-GSBER, sy-vline,
  WA_DFKKOPK_SHORT-HKONT, sy-vline,
  WA_DFKKOPK_SHORT-BETRH, sy-vline,
  WA_DFKKOPK_SHORT-BETRW, sy-vline,
  WA_DFKKOPK_SHORT-MWSKZ, sy-vline,
  WA_DFKKOPK_SHORT-STPRZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKOPK_SHORT 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_DFKKOPK_SHORT 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_DFKKOPK_SHORT INTO WA_DFKKOPK_SHORT.


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

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKOPK_SHORT-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKOPK_SHORT-SEGMENT.
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_DFKKOPK_SHORT_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
GSBER TYPE STRING,
HKONT TYPE STRING,
BETRH TYPE STRING,
BETRW TYPE STRING,
MWSKZ TYPE STRING,
STPRZ TYPE STRING,
VALUT TYPE STRING,
SEGMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKOPK_SHORT_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_DFKKOPK_SHORT_STR-MANDT sy-vline 
WA_DFKKOPK_SHORT_STR-BUKRS sy-vline 
WA_DFKKOPK_SHORT_STR-GJAHR sy-vline 
WA_DFKKOPK_SHORT_STR-OPBEL sy-vline 
WA_DFKKOPK_SHORT_STR-OPUPK sy-vline 
WA_DFKKOPK_SHORT_STR-GSBER sy-vline 
WA_DFKKOPK_SHORT_STR-HKONT sy-vline 
WA_DFKKOPK_SHORT_STR-BETRH sy-vline 
WA_DFKKOPK_SHORT_STR-BETRW sy-vline 
WA_DFKKOPK_SHORT_STR-MWSKZ sy-vline 
WA_DFKKOPK_SHORT_STR-STPRZ sy-vline 
WA_DFKKOPK_SHORT_STR-VALUT sy-vline 
WA_DFKKOPK_SHORT_STR-SEGMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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