ABAP Select data from SAP table KOMKBMM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMKBMM
*  INTO TABLE @DATA(IT_KOMKBMM2).
*--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_KOMKBMM INDEX 1 INTO DATA(WA_KOMKBMM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMKBMM>-MATNR = 1.
<KOMKBMM>-SPRAS = 1.
<KOMKBMM>-MAKTX = 1.
<KOMKBMM>-MEINS = 1.
<KOMKBMM>-BSTME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMKBMM-LVORM, sy-vline,
  WA_KOMKBMM-MTART, sy-vline,
  WA_KOMKBMM-MATKL, sy-vline,
  WA_KOMKBMM-MBRSH, sy-vline,
  WA_KOMKBMM-FERTH, sy-vline,
  WA_KOMKBMM-LABOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMKBMM 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_KOMKBMM 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_KOMKBMM INTO WA_KOMKBMM.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBMM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBMM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBMM-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBMM-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBMM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBMM-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BSTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBMM-BSTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBMM-BSTME.
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_KOMKBMM_STR, 
MATNR TYPE STRING,
SPRAS TYPE STRING,
MAKTX TYPE STRING,
MEINS TYPE STRING,
BSTME TYPE STRING,
LVORM TYPE STRING,
MTART TYPE STRING,
MATKL TYPE STRING,
MBRSH TYPE STRING,
FERTH TYPE STRING,
LABOR TYPE STRING,
EKWSL TYPE STRING,
SPART TYPE STRING,
CADKZ TYPE STRING,
QMPUR TYPE STRING,
AENAM TYPE STRING,
WERKS TYPE STRING,
XCHAR TYPE STRING,
MMSTA TYPE STRING,
MAABC TYPE STRING,
KZKRI TYPE STRING,
EKGRP TYPE STRING,
DISMM TYPE STRING,
DISPO TYPE STRING,
KZDIE TYPE STRING,
BESKZ TYPE STRING,
SOBSL TYPE STRING,
KZAUS TYPE STRING,
PFREI TYPE STRING,
FFREI TYPE STRING,
FEVOR TYPE STRING,
INSMK TYPE STRING,
HERKL TYPE STRING,
HERKR TYPE STRING,
MTVER TYPE STRING,
QMATV TYPE STRING,
DISGR TYPE STRING,
SOBSK TYPE STRING,
DISKZ TYPE STRING,
LSOBS TYPE STRING,
LGPBE TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
VERSG TYPE STRING,
BONUS TYPE STRING,
PROVG TYPE STRING,
SKTOF TYPE STRING,
VMSTA TYPE STRING,
KONDM TYPE STRING,
KTGRM TYPE STRING,
MVGR1 TYPE STRING,
MVGR2 TYPE STRING,
MVGR3 TYPE STRING,
MVGR4 TYPE STRING,
MVGR5 TYPE STRING,
DUMMY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMKBMM_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_KOMKBMM_STR-MATNR sy-vline 
WA_KOMKBMM_STR-SPRAS sy-vline 
WA_KOMKBMM_STR-MAKTX sy-vline 
WA_KOMKBMM_STR-MEINS sy-vline 
WA_KOMKBMM_STR-BSTME sy-vline 
WA_KOMKBMM_STR-LVORM sy-vline 
WA_KOMKBMM_STR-MTART sy-vline 
WA_KOMKBMM_STR-MATKL sy-vline 
WA_KOMKBMM_STR-MBRSH sy-vline 
WA_KOMKBMM_STR-FERTH sy-vline 
WA_KOMKBMM_STR-LABOR sy-vline 
WA_KOMKBMM_STR-EKWSL sy-vline 
WA_KOMKBMM_STR-SPART sy-vline 
WA_KOMKBMM_STR-CADKZ sy-vline 
WA_KOMKBMM_STR-QMPUR sy-vline 
WA_KOMKBMM_STR-AENAM sy-vline 
WA_KOMKBMM_STR-WERKS sy-vline 
WA_KOMKBMM_STR-XCHAR sy-vline 
WA_KOMKBMM_STR-MMSTA sy-vline 
WA_KOMKBMM_STR-MAABC sy-vline 
WA_KOMKBMM_STR-KZKRI sy-vline 
WA_KOMKBMM_STR-EKGRP sy-vline 
WA_KOMKBMM_STR-DISMM sy-vline 
WA_KOMKBMM_STR-DISPO sy-vline 
WA_KOMKBMM_STR-KZDIE sy-vline 
WA_KOMKBMM_STR-BESKZ sy-vline 
WA_KOMKBMM_STR-SOBSL sy-vline 
WA_KOMKBMM_STR-KZAUS sy-vline 
WA_KOMKBMM_STR-PFREI sy-vline 
WA_KOMKBMM_STR-FFREI sy-vline 
WA_KOMKBMM_STR-FEVOR sy-vline 
WA_KOMKBMM_STR-INSMK sy-vline 
WA_KOMKBMM_STR-HERKL sy-vline 
WA_KOMKBMM_STR-HERKR sy-vline 
WA_KOMKBMM_STR-MTVER sy-vline 
WA_KOMKBMM_STR-QMATV sy-vline 
WA_KOMKBMM_STR-DISGR sy-vline 
WA_KOMKBMM_STR-SOBSK sy-vline 
WA_KOMKBMM_STR-DISKZ sy-vline 
WA_KOMKBMM_STR-LSOBS sy-vline 
WA_KOMKBMM_STR-LGPBE sy-vline 
WA_KOMKBMM_STR-VKORG sy-vline 
WA_KOMKBMM_STR-VTWEG sy-vline 
WA_KOMKBMM_STR-VERSG sy-vline 
WA_KOMKBMM_STR-BONUS sy-vline 
WA_KOMKBMM_STR-PROVG sy-vline 
WA_KOMKBMM_STR-SKTOF sy-vline 
WA_KOMKBMM_STR-VMSTA sy-vline 
WA_KOMKBMM_STR-KONDM sy-vline 
WA_KOMKBMM_STR-KTGRM sy-vline 
WA_KOMKBMM_STR-MVGR1 sy-vline 
WA_KOMKBMM_STR-MVGR2 sy-vline 
WA_KOMKBMM_STR-MVGR3 sy-vline 
WA_KOMKBMM_STR-MVGR4 sy-vline 
WA_KOMKBMM_STR-MVGR5 sy-vline 
WA_KOMKBMM_STR-DUMMY sy-vline      INTO ld_text SEPARATED BY SPACE.

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