ABAP Select data from SAP table KOMPBV2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KOMPBV2 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 KOMPBV2. 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 KOMPBV2 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_KOMPBV2 TYPE STANDARD TABLE OF KOMPBV2,
      WA_KOMPBV2 TYPE KOMPBV2,
      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: <KOMPBV2> TYPE KOMPBV2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KOMPBV2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KOMPBV2
  INTO TABLE IT_KOMPBV2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMPBV2
*  INTO TABLE @DATA(IT_KOMPBV22).
*--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_KOMPBV2 INDEX 1 INTO DATA(WA_KOMPBV22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KOMPBV2 ASSIGNING <KOMPBV2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMPBV2>-POSNR = 1.
<KOMPBV2>-PSTYV = 1.
<KOMPBV2>-ERNAM = 1.
<KOMPBV2>-MATNR = 1.
<KOMPBV2>-MATWA = 1.

ENDLOOP.

LOOP AT IT_KOMPBV2 INTO WA_KOMPBV2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMPBV2-MATKL, sy-vline,
  WA_KOMPBV2-WERKS, sy-vline,
  WA_KOMPBV2-LGORT, sy-vline,
  WA_KOMPBV2-CHARG, sy-vline,
  WA_KOMPBV2-KDMAT, sy-vline,
  WA_KOMPBV2-PRODH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMPBV2 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_KOMPBV2 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_KOMPBV2 INTO WA_KOMPBV2.


*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_KOMPBV2-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPBV2-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATWA
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KOMPBV2-MATWA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPBV2-MATWA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMPBV2-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPBV2-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMPBV2-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPBV2-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMPBV2-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPBV2-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMPBV2-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPBV2-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_KOMPBV2-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPBV2-EAN11.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMPBV2-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPBV2-KOSTL.
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_KOMPBV2_STR, 
POSNR TYPE STRING,
PSTYV TYPE STRING,
ERNAM TYPE STRING,
MATNR TYPE STRING,
MATWA TYPE STRING,
MATKL TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
KDMAT TYPE STRING,
PRODH TYPE STRING,
LFIMG TYPE STRING,
MEINS TYPE STRING,
VRKME TYPE STRING,
NTGEW TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
KZTLF TYPE STRING,
CHSPL TYPE STRING,
FAKSP TYPE STRING,
LGPBE TYPE STRING,
LADGR TYPE STRING,
TRAGR TYPE STRING,
KOMKZ TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
BWART TYPE STRING,
BWLVS TYPE STRING,
BDART TYPE STRING,
PLART TYPE STRING,
MTART TYPE STRING,
POSAR TYPE STRING,
GSBER TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
EAN11 TYPE STRING,
KVGR1 TYPE STRING,
KVGR2 TYPE STRING,
KVGR3 TYPE STRING,
KVGR4 TYPE STRING,
KVGR5 TYPE STRING,
MVGR1 TYPE STRING,
MVGR2 TYPE STRING,
MVGR3 TYPE STRING,
MVGR4 TYPE STRING,
MVGR5 TYPE STRING,
VGTYP TYPE STRING,
KOSTL TYPE STRING,
PCKPF TYPE STRING,
KOSTA TYPE STRING,
LVSTA TYPE STRING,
UVALL TYPE STRING,
UVPAK TYPE STRING,
UVPIK TYPE STRING,
PKSTA TYPE STRING,
ETI01 TYPE STRING,
ETI02 TYPE STRING,
ADDIX TYPE STRING,
UECHA TYPE STRING,
KZUMW TYPE STRING,
DUMMY TYPE STRING,
/SAPMP/LBASP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMPBV2_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_KOMPBV2_STR-POSNR sy-vline 
WA_KOMPBV2_STR-PSTYV sy-vline 
WA_KOMPBV2_STR-ERNAM sy-vline 
WA_KOMPBV2_STR-MATNR sy-vline 
WA_KOMPBV2_STR-MATWA sy-vline 
WA_KOMPBV2_STR-MATKL sy-vline 
WA_KOMPBV2_STR-WERKS sy-vline 
WA_KOMPBV2_STR-LGORT sy-vline 
WA_KOMPBV2_STR-CHARG sy-vline 
WA_KOMPBV2_STR-KDMAT sy-vline 
WA_KOMPBV2_STR-PRODH sy-vline 
WA_KOMPBV2_STR-LFIMG sy-vline 
WA_KOMPBV2_STR-MEINS sy-vline 
WA_KOMPBV2_STR-VRKME sy-vline 
WA_KOMPBV2_STR-NTGEW sy-vline 
WA_KOMPBV2_STR-BRGEW sy-vline 
WA_KOMPBV2_STR-GEWEI sy-vline 
WA_KOMPBV2_STR-VOLUM sy-vline 
WA_KOMPBV2_STR-VOLEH sy-vline 
WA_KOMPBV2_STR-KZTLF sy-vline 
WA_KOMPBV2_STR-CHSPL sy-vline 
WA_KOMPBV2_STR-FAKSP sy-vline 
WA_KOMPBV2_STR-LGPBE sy-vline 
WA_KOMPBV2_STR-LADGR sy-vline 
WA_KOMPBV2_STR-TRAGR sy-vline 
WA_KOMPBV2_STR-KOMKZ sy-vline 
WA_KOMPBV2_STR-LGNUM sy-vline 
WA_KOMPBV2_STR-LGTYP sy-vline 
WA_KOMPBV2_STR-LGPLA sy-vline 
WA_KOMPBV2_STR-BWART sy-vline 
WA_KOMPBV2_STR-BWLVS sy-vline 
WA_KOMPBV2_STR-BDART sy-vline 
WA_KOMPBV2_STR-PLART sy-vline 
WA_KOMPBV2_STR-MTART sy-vline 
WA_KOMPBV2_STR-POSAR sy-vline 
WA_KOMPBV2_STR-GSBER sy-vline 
WA_KOMPBV2_STR-VKBUR sy-vline 
WA_KOMPBV2_STR-VKGRP sy-vline 
WA_KOMPBV2_STR-VTWEG sy-vline 
WA_KOMPBV2_STR-SPART sy-vline 
WA_KOMPBV2_STR-EAN11 sy-vline 
WA_KOMPBV2_STR-KVGR1 sy-vline 
WA_KOMPBV2_STR-KVGR2 sy-vline 
WA_KOMPBV2_STR-KVGR3 sy-vline 
WA_KOMPBV2_STR-KVGR4 sy-vline 
WA_KOMPBV2_STR-KVGR5 sy-vline 
WA_KOMPBV2_STR-MVGR1 sy-vline 
WA_KOMPBV2_STR-MVGR2 sy-vline 
WA_KOMPBV2_STR-MVGR3 sy-vline 
WA_KOMPBV2_STR-MVGR4 sy-vline 
WA_KOMPBV2_STR-MVGR5 sy-vline 
WA_KOMPBV2_STR-VGTYP sy-vline 
WA_KOMPBV2_STR-KOSTL sy-vline 
WA_KOMPBV2_STR-PCKPF sy-vline 
WA_KOMPBV2_STR-KOSTA sy-vline 
WA_KOMPBV2_STR-LVSTA sy-vline 
WA_KOMPBV2_STR-UVALL sy-vline 
WA_KOMPBV2_STR-UVPAK sy-vline 
WA_KOMPBV2_STR-UVPIK sy-vline 
WA_KOMPBV2_STR-PKSTA sy-vline 
WA_KOMPBV2_STR-ETI01 sy-vline 
WA_KOMPBV2_STR-ETI02 sy-vline 
WA_KOMPBV2_STR-ADDIX sy-vline 
WA_KOMPBV2_STR-UECHA sy-vline 
WA_KOMPBV2_STR-KZUMW sy-vline 
WA_KOMPBV2_STR-DUMMY sy-vline 
WA_KOMPBV2_STR-/SAPMP/LBASP sy-vline      INTO ld_text SEPARATED BY SPACE.

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