ABAP Select data from SAP table KOMKBV2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KOMKBV2 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 KOMKBV2. 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 KOMKBV2 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_KOMKBV2 TYPE STANDARD TABLE OF KOMKBV2,
      WA_KOMKBV2 TYPE KOMKBV2,
      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: <KOMKBV2> TYPE KOMKBV2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KOMKBV2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KOMKBV2
  INTO TABLE IT_KOMKBV2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMKBV2
*  INTO TABLE @DATA(IT_KOMKBV22).
*--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_KOMKBV2 INDEX 1 INTO DATA(WA_KOMKBV22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KOMKBV2 ASSIGNING <KOMKBV2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMKBV2>-VBELN = 1.
<KOMKBV2>-VKORG = 1.
<KOMKBV2>-VSTEL = 1.
<KOMKBV2>-LSTEL = 1.
<KOMKBV2>-VTWEG = 1.

ENDLOOP.

LOOP AT IT_KOMKBV2 INTO WA_KOMKBV2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMKBV2-SPART, sy-vline,
  WA_KOMKBV2-VKBUR, sy-vline,
  WA_KOMKBV2-BZIRK, sy-vline,
  WA_KOMKBV2-KDGRP, sy-vline,
  WA_KOMKBV2-PARVW, sy-vline,
  WA_KOMKBV2-PARNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMKBV2 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_KOMKBV2 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_KOMKBV2 INTO WA_KOMKBV2.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBV2-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBV2-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBV2-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBV2-PARVW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBV2-PARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBV2-PARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KNDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBV2-KNDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBV2-KNDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNWE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBV2-KUNWE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBV2-KUNWE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBV2-KUNAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBV2-KUNAG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBV2-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBV2-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBV2-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBV2-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMKBV2-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMKBV2-VOLEH.
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_KOMKBV2_STR, 
VBELN TYPE STRING,
VKORG TYPE STRING,
VSTEL TYPE STRING,
LSTEL TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
BZIRK TYPE STRING,
KDGRP TYPE STRING,
PARVW TYPE STRING,
PARNR TYPE STRING,
KNDNR TYPE STRING,
KUNWE TYPE STRING,
KUNAG TYPE STRING,
LIFNR TYPE STRING,
LLAND TYPE STRING,
INCO1 TYPE STRING,
VSBED TYPE STRING,
ZTERM TYPE STRING,
WAERK TYPE STRING,
LFART TYPE STRING,
VBTYP TYPE STRING,
EXPKZ TYPE STRING,
ROUTE TYPE STRING,
LIFSK TYPE STRING,
TPQUA TYPE STRING,
TPGRP TYPE STRING,
TRAGR TYPE STRING,
LPRIO TYPE STRING,
BTGEW TYPE STRING,
NTGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
KOSTK TYPE STRING,
WBSTK TYPE STRING,
PKSTK TYPE STRING,
KOQUK TYPE STRING,
UVALS TYPE STRING,
UVVLS TYPE STRING,
UVFAS TYPE STRING,
UVPAS TYPE STRING,
UVPIS TYPE STRING,
UVWAS TYPE STRING,
UVALL TYPE STRING,
UVVLK TYPE STRING,
UVFAK TYPE STRING,
UVPAK TYPE STRING,
UVPIK TYPE STRING,
UVWAK TYPE STRING,
COMMN TYPE STRING,
TRTYP TYPE STRING,
KKBER TYPE STRING,
SBGRP TYPE STRING,
CMNGV TYPE STRING,
CTLPC TYPE STRING,
SPE_BILLING_IND TYPE STRING,
FKSTK TYPE STRING,
CMPSA TYPE STRING,
CMPSB TYPE STRING,
CMPSC TYPE STRING,
CMPSD TYPE STRING,
CMPSE TYPE STRING,
CMPSF TYPE STRING,
CMPSG TYPE STRING,
CMPSH TYPE STRING,
CMPSI TYPE STRING,
CMPSJ TYPE STRING,
CMPSK TYPE STRING,
CMPSL TYPE STRING,
CMPS0 TYPE STRING,
CMPS1 TYPE STRING,
CMPS2 TYPE STRING,
CMPSM TYPE STRING,
CMGST TYPE STRING,
CMPS_CM TYPE STRING,
CMPS_TE TYPE STRING,
DUMMY TYPE STRING,
IX_KOMK TYPE STRING,
IX_KOMT1_V TYPE STRING,
IX_KOMT1_B TYPE STRING,
LVSTK TYPE STRING,
WERKS TYPE STRING,
TRSTA TYPE STRING,
ADDIX TYPE STRING,
VLSTK TYPE STRING,
TM_CTRL_KEY TYPE STRING,
TOTAL_ARC_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMKBV2_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_KOMKBV2_STR-VBELN sy-vline 
WA_KOMKBV2_STR-VKORG sy-vline 
WA_KOMKBV2_STR-VSTEL sy-vline 
WA_KOMKBV2_STR-LSTEL sy-vline 
WA_KOMKBV2_STR-VTWEG sy-vline 
WA_KOMKBV2_STR-SPART sy-vline 
WA_KOMKBV2_STR-VKBUR sy-vline 
WA_KOMKBV2_STR-BZIRK sy-vline 
WA_KOMKBV2_STR-KDGRP sy-vline 
WA_KOMKBV2_STR-PARVW sy-vline 
WA_KOMKBV2_STR-PARNR sy-vline 
WA_KOMKBV2_STR-KNDNR sy-vline 
WA_KOMKBV2_STR-KUNWE sy-vline 
WA_KOMKBV2_STR-KUNAG sy-vline 
WA_KOMKBV2_STR-LIFNR sy-vline 
WA_KOMKBV2_STR-LLAND sy-vline 
WA_KOMKBV2_STR-INCO1 sy-vline 
WA_KOMKBV2_STR-VSBED sy-vline 
WA_KOMKBV2_STR-ZTERM sy-vline 
WA_KOMKBV2_STR-WAERK sy-vline 
WA_KOMKBV2_STR-LFART sy-vline 
WA_KOMKBV2_STR-VBTYP sy-vline 
WA_KOMKBV2_STR-EXPKZ sy-vline 
WA_KOMKBV2_STR-ROUTE sy-vline 
WA_KOMKBV2_STR-LIFSK sy-vline 
WA_KOMKBV2_STR-TPQUA sy-vline 
WA_KOMKBV2_STR-TPGRP sy-vline 
WA_KOMKBV2_STR-TRAGR sy-vline 
WA_KOMKBV2_STR-LPRIO sy-vline 
WA_KOMKBV2_STR-BTGEW sy-vline 
WA_KOMKBV2_STR-NTGEW sy-vline 
WA_KOMKBV2_STR-GEWEI sy-vline 
WA_KOMKBV2_STR-VOLUM sy-vline 
WA_KOMKBV2_STR-VOLEH sy-vline 
WA_KOMKBV2_STR-KOSTK sy-vline 
WA_KOMKBV2_STR-WBSTK sy-vline 
WA_KOMKBV2_STR-PKSTK sy-vline 
WA_KOMKBV2_STR-KOQUK sy-vline 
WA_KOMKBV2_STR-UVALS sy-vline 
WA_KOMKBV2_STR-UVVLS sy-vline 
WA_KOMKBV2_STR-UVFAS sy-vline 
WA_KOMKBV2_STR-UVPAS sy-vline 
WA_KOMKBV2_STR-UVPIS sy-vline 
WA_KOMKBV2_STR-UVWAS sy-vline 
WA_KOMKBV2_STR-UVALL sy-vline 
WA_KOMKBV2_STR-UVVLK sy-vline 
WA_KOMKBV2_STR-UVFAK sy-vline 
WA_KOMKBV2_STR-UVPAK sy-vline 
WA_KOMKBV2_STR-UVPIK sy-vline 
WA_KOMKBV2_STR-UVWAK sy-vline 
WA_KOMKBV2_STR-COMMN sy-vline 
WA_KOMKBV2_STR-TRTYP sy-vline 
WA_KOMKBV2_STR-KKBER sy-vline 
WA_KOMKBV2_STR-SBGRP sy-vline 
WA_KOMKBV2_STR-CMNGV sy-vline 
WA_KOMKBV2_STR-CTLPC sy-vline 
WA_KOMKBV2_STR-SPE_BILLING_IND sy-vline 
WA_KOMKBV2_STR-FKSTK sy-vline 
WA_KOMKBV2_STR-CMPSA sy-vline 
WA_KOMKBV2_STR-CMPSB sy-vline 
WA_KOMKBV2_STR-CMPSC sy-vline 
WA_KOMKBV2_STR-CMPSD sy-vline 
WA_KOMKBV2_STR-CMPSE sy-vline 
WA_KOMKBV2_STR-CMPSF sy-vline 
WA_KOMKBV2_STR-CMPSG sy-vline 
WA_KOMKBV2_STR-CMPSH sy-vline 
WA_KOMKBV2_STR-CMPSI sy-vline 
WA_KOMKBV2_STR-CMPSJ sy-vline 
WA_KOMKBV2_STR-CMPSK sy-vline 
WA_KOMKBV2_STR-CMPSL sy-vline 
WA_KOMKBV2_STR-CMPS0 sy-vline 
WA_KOMKBV2_STR-CMPS1 sy-vline 
WA_KOMKBV2_STR-CMPS2 sy-vline 
WA_KOMKBV2_STR-CMPSM sy-vline 
WA_KOMKBV2_STR-CMGST sy-vline 
WA_KOMKBV2_STR-CMPS_CM sy-vline 
WA_KOMKBV2_STR-CMPS_TE sy-vline 
WA_KOMKBV2_STR-DUMMY sy-vline 
WA_KOMKBV2_STR-IX_KOMK sy-vline 
WA_KOMKBV2_STR-IX_KOMT1_V sy-vline 
WA_KOMKBV2_STR-IX_KOMT1_B sy-vline 
WA_KOMKBV2_STR-LVSTK sy-vline 
WA_KOMKBV2_STR-WERKS sy-vline 
WA_KOMKBV2_STR-TRSTA sy-vline 
WA_KOMKBV2_STR-ADDIX sy-vline 
WA_KOMKBV2_STR-VLSTK sy-vline 
WA_KOMKBV2_STR-TM_CTRL_KEY sy-vline 
WA_KOMKBV2_STR-TOTAL_ARC_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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