ABAP Select data from SAP table KOMPBME into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMPBME
*  INTO TABLE @DATA(IT_KOMPBME2).
*--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_KOMPBME INDEX 1 INTO DATA(WA_KOMPBME2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMPBME>-PABPM = 1.
<KOMPBME>-EBELN = 1.
<KOMPBME>-EKORG = 1.
<KOMPBME>-ERNAM = 1.
<KOMPBME>-BEDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMPBME-SHKZG, sy-vline,
  WA_KOMPBME-KZWES, sy-vline,
  WA_KOMPBME-WEAKT, sy-vline,
  WA_KOMPBME-KZDRU, sy-vline,
  WA_KOMPBME-WERKS, sy-vline,
  WA_KOMPBME-LGORT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMPBME 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_KOMPBME 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_KOMPBME INTO WA_KOMPBME.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMPBME-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPBME-KUNNR.
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_KOMPBME_STR, 
PABPM TYPE STRING,
EBELN TYPE STRING,
EKORG TYPE STRING,
ERNAM TYPE STRING,
BEDAT TYPE STRING,
SHKZG TYPE STRING,
KZWES TYPE STRING,
WEAKT TYPE STRING,
KZDRU TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
ETIAR TYPE STRING,
ETIFO TYPE STRING,
DUMMY TYPE STRING,
XFMAT TYPE STRING,
ETI01 TYPE STRING,
ETI02 TYPE STRING,
ZEILE TYPE STRING,
KNBDR TYPE STRING,
LMBMV TYPE STRING,
FELDV TYPE STRING,
ARBBUKRS TYPE STRING,
ARBLIFNR TYPE STRING,
MATNR TYPE STRING,
LIFNR TYPE STRING,
ELIFN TYPE STRING,
EMLIF TYPE STRING,
LLIEF TYPE STRING,
KUNNR TYPE STRING,
WEMPF TYPE STRING,
BWART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMPBME_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_KOMPBME_STR-PABPM sy-vline 
WA_KOMPBME_STR-EBELN sy-vline 
WA_KOMPBME_STR-EKORG sy-vline 
WA_KOMPBME_STR-ERNAM sy-vline 
WA_KOMPBME_STR-BEDAT sy-vline 
WA_KOMPBME_STR-SHKZG sy-vline 
WA_KOMPBME_STR-KZWES sy-vline 
WA_KOMPBME_STR-WEAKT sy-vline 
WA_KOMPBME_STR-KZDRU sy-vline 
WA_KOMPBME_STR-WERKS sy-vline 
WA_KOMPBME_STR-LGORT sy-vline 
WA_KOMPBME_STR-ETIAR sy-vline 
WA_KOMPBME_STR-ETIFO sy-vline 
WA_KOMPBME_STR-DUMMY sy-vline 
WA_KOMPBME_STR-XFMAT sy-vline 
WA_KOMPBME_STR-ETI01 sy-vline 
WA_KOMPBME_STR-ETI02 sy-vline 
WA_KOMPBME_STR-ZEILE sy-vline 
WA_KOMPBME_STR-KNBDR sy-vline 
WA_KOMPBME_STR-LMBMV sy-vline 
WA_KOMPBME_STR-FELDV sy-vline 
WA_KOMPBME_STR-ARBBUKRS sy-vline 
WA_KOMPBME_STR-ARBLIFNR sy-vline 
WA_KOMPBME_STR-MATNR sy-vline 
WA_KOMPBME_STR-LIFNR sy-vline 
WA_KOMPBME_STR-ELIFN sy-vline 
WA_KOMPBME_STR-EMLIF sy-vline 
WA_KOMPBME_STR-LLIEF sy-vline 
WA_KOMPBME_STR-KUNNR sy-vline 
WA_KOMPBME_STR-WEMPF sy-vline 
WA_KOMPBME_STR-BWART sy-vline      INTO ld_text SEPARATED BY SPACE.

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