ABAP Select data from SAP table KOMKBJK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMKBJK
*  INTO TABLE @DATA(IT_KOMKBJK2).
*--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_KOMKBJK INDEX 1 INTO DATA(WA_KOMKBJK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMKBJK>-VKORG = 1.
<KOMKBJK>-VTWEG = 1.
<KOMKBJK>-SPART = 1.
<KOMKBJK>-VKBUR = 1.
<KOMKBJK>-VKGRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMKBJK-ABINHNR, sy-vline,
  WA_KOMKBJK-XTO_BEST, sy-vline,
  WA_KOMKBJK-TRTYP, sy-vline,
  WA_KOMKBJK-XBESTK, sy-vline,
  WA_KOMKBJK-XERN_HINW, sy-vline,
  WA_KOMKBJK-VTNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMKBJK 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_KOMKBJK 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_KOMKBJK INTO WA_KOMKBJK.


*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 ABINHNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBJK-ABINHNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBJK-ABINHNR.
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_KOMKBJK_STR, 
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
ABINHNR TYPE STRING,
XTO_BEST TYPE STRING,
TRTYP TYPE STRING,
XBESTK TYPE STRING,
XERN_HINW TYPE STRING,
VTNR TYPE STRING,
XBEARB TYPE STRING,
XNEUSTAT TYPE STRING,
XTO_WARN TYPE STRING,
XWARN_GEN TYPE STRING,
V_NUMMER TYPE STRING,
XTO_HINW TYPE STRING,
XHINW_GEN TYPE STRING,
XQUASI TYPE STRING,
XERFUELLT TYPE STRING,
XRABAN TYPE STRING,
XRABAEN TYPE STRING,
XRAB_CH TYPE STRING,
XZIELAEN TYPE STRING,
XLFZAEN TYPE STRING,
XPOSAEN TYPE STRING,
XNOBEL TYPE STRING,
XKONZERN TYPE STRING,
XORG_ERG TYPE STRING,
XGE_GESCH TYPE STRING,
ABRECHK TYPE STRING,
ABRGNR TYPE STRING,
FAKSP TYPE STRING,
ANLASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMKBJK_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_KOMKBJK_STR-VKORG sy-vline 
WA_KOMKBJK_STR-VTWEG sy-vline 
WA_KOMKBJK_STR-SPART sy-vline 
WA_KOMKBJK_STR-VKBUR sy-vline 
WA_KOMKBJK_STR-VKGRP sy-vline 
WA_KOMKBJK_STR-ABINHNR sy-vline 
WA_KOMKBJK_STR-XTO_BEST sy-vline 
WA_KOMKBJK_STR-TRTYP sy-vline 
WA_KOMKBJK_STR-XBESTK sy-vline 
WA_KOMKBJK_STR-XERN_HINW sy-vline 
WA_KOMKBJK_STR-VTNR sy-vline 
WA_KOMKBJK_STR-XBEARB sy-vline 
WA_KOMKBJK_STR-XNEUSTAT sy-vline 
WA_KOMKBJK_STR-XTO_WARN sy-vline 
WA_KOMKBJK_STR-XWARN_GEN sy-vline 
WA_KOMKBJK_STR-V_NUMMER sy-vline 
WA_KOMKBJK_STR-XTO_HINW sy-vline 
WA_KOMKBJK_STR-XHINW_GEN sy-vline 
WA_KOMKBJK_STR-XQUASI sy-vline 
WA_KOMKBJK_STR-XERFUELLT sy-vline 
WA_KOMKBJK_STR-XRABAN sy-vline 
WA_KOMKBJK_STR-XRABAEN sy-vline 
WA_KOMKBJK_STR-XRAB_CH sy-vline 
WA_KOMKBJK_STR-XZIELAEN sy-vline 
WA_KOMKBJK_STR-XLFZAEN sy-vline 
WA_KOMKBJK_STR-XPOSAEN sy-vline 
WA_KOMKBJK_STR-XNOBEL sy-vline 
WA_KOMKBJK_STR-XKONZERN sy-vline 
WA_KOMKBJK_STR-XORG_ERG sy-vline 
WA_KOMKBJK_STR-XGE_GESCH sy-vline 
WA_KOMKBJK_STR-ABRECHK sy-vline 
WA_KOMKBJK_STR-ABRGNR sy-vline 
WA_KOMKBJK_STR-FAKSP sy-vline 
WA_KOMKBJK_STR-ANLASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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