ABAP Select data from SAP table VBAPKOM1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VBAPKOM1 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 VBAPKOM1. 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 VBAPKOM1 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_VBAPKOM1 TYPE STANDARD TABLE OF VBAPKOM1,
      WA_VBAPKOM1 TYPE VBAPKOM1,
      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: <VBAPKOM1> TYPE VBAPKOM1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VBAPKOM1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VBAPKOM1
  INTO TABLE IT_VBAPKOM1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VBAPKOM1
*  INTO TABLE @DATA(IT_VBAPKOM12).
*--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_VBAPKOM1 INDEX 1 INTO DATA(WA_VBAPKOM12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VBAPKOM1 ASSIGNING <VBAPKOM1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VBAPKOM1>-VBELN = 1.
<VBAPKOM1>-POSNR = 1.
<VBAPKOM1>-REMNG = 1.
<VBAPKOM1>-MEINS = 1.
<VBAPKOM1>-SHKZG = 1.

ENDLOOP.

LOOP AT IT_VBAPKOM1 INTO WA_VBAPKOM1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VBAPKOM1-DMBTR, sy-vline,
  WA_VBAPKOM1-XEKBZ, sy-vline,
  WA_VBAPKOM1-NOQUANTITY, sy-vline,
  WA_VBAPKOM1-REMNGV, sy-vline,
  WA_VBAPKOM1-LEDAT, sy-vline,
  WA_VBAPKOM1-BLDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VBAPKOM1 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_VBAPKOM1 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_VBAPKOM1 INTO WA_VBAPKOM1.


*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_VBAPKOM1-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBAPKOM1-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VBAPKOM1-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBAPKOM1-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INV_BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VBAPKOM1-INV_BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VBAPKOM1-INV_BELNR.
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_VBAPKOM1_STR, 
VBELN TYPE STRING,
POSNR TYPE STRING,
REMNG TYPE STRING,
MEINS TYPE STRING,
SHKZG TYPE STRING,
DMBTR TYPE STRING,
XEKBZ TYPE STRING,
NOQUANTITY TYPE STRING,
REMNGV TYPE STRING,
LEDAT TYPE STRING,
BLDAT TYPE STRING,
EINDT TYPE STRING,
INV_BELNR TYPE STRING,
EREKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VBAPKOM1_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_VBAPKOM1_STR-VBELN sy-vline 
WA_VBAPKOM1_STR-POSNR sy-vline 
WA_VBAPKOM1_STR-REMNG sy-vline 
WA_VBAPKOM1_STR-MEINS sy-vline 
WA_VBAPKOM1_STR-SHKZG sy-vline 
WA_VBAPKOM1_STR-DMBTR sy-vline 
WA_VBAPKOM1_STR-XEKBZ sy-vline 
WA_VBAPKOM1_STR-NOQUANTITY sy-vline 
WA_VBAPKOM1_STR-REMNGV sy-vline 
WA_VBAPKOM1_STR-LEDAT sy-vline 
WA_VBAPKOM1_STR-BLDAT sy-vline 
WA_VBAPKOM1_STR-EINDT sy-vline 
WA_VBAPKOM1_STR-INV_BELNR sy-vline 
WA_VBAPKOM1_STR-EREKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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