ABAP Select data from SAP table DFKKOP_SHORT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFKKOP_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 DFKKOP_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 DFKKOP_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_DFKKOP_SHORT TYPE STANDARD TABLE OF DFKKOP_SHORT,
      WA_DFKKOP_SHORT TYPE DFKKOP_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: <DFKKOP_SHORT> TYPE DFKKOP_SHORT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKOP_SHORT
*  INTO TABLE @DATA(IT_DFKKOP_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_DFKKOP_SHORT INDEX 1 INTO DATA(WA_DFKKOP_SHORT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKOP_SHORT-GSBER, sy-vline,
  WA_DFKKOP_SHORT-GPART, sy-vline,
  WA_DFKKOP_SHORT-VKONT, sy-vline,
  WA_DFKKOP_SHORT-HKONT, sy-vline,
  WA_DFKKOP_SHORT-MWSKZ, sy-vline,
  WA_DFKKOP_SHORT-FAEDN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKOP_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_DFKKOP_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_DFKKOP_SHORT INTO WA_DFKKOP_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_DFKKOP_SHORT-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKOP_SHORT-HKONT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field ASBLG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKOP_SHORT-ASBLG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKOP_SHORT-ASBLG.
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_DFKKOP_SHORT_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
GSBER TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
HKONT TYPE STRING,
MWSKZ TYPE STRING,
FAEDN TYPE STRING,
BETRH TYPE STRING,
BETRW TYPE STRING,
AUGBL TYPE STRING,
AUGDT TYPE STRING,
VTREF TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
SPART TYPE STRING,
MWSKO TYPE STRING,
MWVKO TYPE STRING,
SBETW TYPE STRING,
SBETH TYPE STRING,
SUBAP TYPE STRING,
SEGMENT TYPE STRING,
ASBLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKOP_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_DFKKOP_SHORT_STR-MANDT sy-vline 
WA_DFKKOP_SHORT_STR-BUKRS sy-vline 
WA_DFKKOP_SHORT_STR-GJAHR sy-vline 
WA_DFKKOP_SHORT_STR-OPBEL sy-vline 
WA_DFKKOP_SHORT_STR-OPUPK sy-vline 
WA_DFKKOP_SHORT_STR-GSBER sy-vline 
WA_DFKKOP_SHORT_STR-GPART sy-vline 
WA_DFKKOP_SHORT_STR-VKONT sy-vline 
WA_DFKKOP_SHORT_STR-HKONT sy-vline 
WA_DFKKOP_SHORT_STR-MWSKZ sy-vline 
WA_DFKKOP_SHORT_STR-FAEDN sy-vline 
WA_DFKKOP_SHORT_STR-BETRH sy-vline 
WA_DFKKOP_SHORT_STR-BETRW sy-vline 
WA_DFKKOP_SHORT_STR-AUGBL sy-vline 
WA_DFKKOP_SHORT_STR-AUGDT sy-vline 
WA_DFKKOP_SHORT_STR-VTREF sy-vline 
WA_DFKKOP_SHORT_STR-HVORG sy-vline 
WA_DFKKOP_SHORT_STR-TVORG sy-vline 
WA_DFKKOP_SHORT_STR-SPART sy-vline 
WA_DFKKOP_SHORT_STR-MWSKO sy-vline 
WA_DFKKOP_SHORT_STR-MWVKO sy-vline 
WA_DFKKOP_SHORT_STR-SBETW sy-vline 
WA_DFKKOP_SHORT_STR-SBETH sy-vline 
WA_DFKKOP_SHORT_STR-SUBAP sy-vline 
WA_DFKKOP_SHORT_STR-SEGMENT sy-vline 
WA_DFKKOP_SHORT_STR-ASBLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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