ABAP Select data from SAP table KOMKBWR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMKBWR
*  INTO TABLE @DATA(IT_KOMKBWR2).
*--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_KOMKBWR INDEX 1 INTO DATA(WA_KOMKBWR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMKBWR>-EKORG = 1.
<KOMKBWR>-EKGRP = 1.
<KOMKBWR>-VKORG = 1.
<KOMKBWR>-VTWEG = 1.
<KOMKBWR>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMKBWR-BUKRS, sy-vline,
  WA_KOMKBWR-LIFRE, sy-vline,
  WA_KOMKBWR-LNRZB, sy-vline,
  WA_KOMKBWR-KUNRE, sy-vline,
  WA_KOMKBWR-KUNRG, sy-vline,
  WA_KOMKBWR-LFART_WR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMKBWR 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_KOMKBWR 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_KOMKBWR INTO WA_KOMKBWR.


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

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

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

*Conversion exit ALPHA, internal->external for field KUNRG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBWR-KUNRG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBWR-KUNRG.
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_KOMKBWR_STR, 
EKORG TYPE STRING,
EKGRP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
BUKRS TYPE STRING,
LIFRE TYPE STRING,
LNRZB TYPE STRING,
KUNRE TYPE STRING,
KUNRG TYPE STRING,
LFART_WR TYPE STRING,
LFTYP TYPE STRING,
WRART TYPE STRING,
WBTYP TYPE STRING,
WRTYP TYPE STRING,
RFBSK TYPE STRING,
ERNAM TYPE STRING,
WDTYP TYPE STRING,
CONTR_TYPE TYPE STRING,
PROCESS_VARIANT TYPE STRING,
RFBSK_COMB_SETT TYPE STRING,
DUMMYUSR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMKBWR_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_KOMKBWR_STR-EKORG sy-vline 
WA_KOMKBWR_STR-EKGRP sy-vline 
WA_KOMKBWR_STR-VKORG sy-vline 
WA_KOMKBWR_STR-VTWEG sy-vline 
WA_KOMKBWR_STR-SPART sy-vline 
WA_KOMKBWR_STR-BUKRS sy-vline 
WA_KOMKBWR_STR-LIFRE sy-vline 
WA_KOMKBWR_STR-LNRZB sy-vline 
WA_KOMKBWR_STR-KUNRE sy-vline 
WA_KOMKBWR_STR-KUNRG sy-vline 
WA_KOMKBWR_STR-LFART_WR sy-vline 
WA_KOMKBWR_STR-LFTYP sy-vline 
WA_KOMKBWR_STR-WRART sy-vline 
WA_KOMKBWR_STR-WBTYP sy-vline 
WA_KOMKBWR_STR-WRTYP sy-vline 
WA_KOMKBWR_STR-RFBSK sy-vline 
WA_KOMKBWR_STR-ERNAM sy-vline 
WA_KOMKBWR_STR-WDTYP sy-vline 
WA_KOMKBWR_STR-CONTR_TYPE sy-vline 
WA_KOMKBWR_STR-PROCESS_VARIANT sy-vline 
WA_KOMKBWR_STR-RFBSK_COMB_SETT sy-vline 
WA_KOMKBWR_STR-DUMMYUSR sy-vline      INTO ld_text SEPARATED BY SPACE.

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