ABAP Select data from SAP table VM08R into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP VM08R 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 VM08R. 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 VM08R 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_VM08R TYPE STANDARD TABLE OF VM08R,
      WA_VM08R TYPE VM08R,
      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: <VM08R> TYPE VM08R.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VM08R.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VM08R
  INTO TABLE IT_VM08R.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VM08R
*  INTO TABLE @DATA(IT_VM08R2).
*--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_VM08R INDEX 1 INTO DATA(WA_VM08R2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VM08R ASSIGNING <VM08R>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VM08R>-APREI = 1.
<VM08R>-KMBEW = 1.
<VM08R>-NPEINH = 1.
<VM08R>-PSTYP = 1.
<VM08R>-STDPR = 1.

ENDLOOP.

LOOP AT IT_VM08R INTO WA_VM08R.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VM08R-XBLNR, sy-vline,
  WA_VM08R-XBMAT, sy-vline,
  WA_VM08R-XRUEJ, sy-vline,
  WA_VM08R-XRUEM, sy-vline,
  WA_VM08R-XLIFO, sy-vline,
  WA_VM08R-BUDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VM08R 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_VM08R 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_VM08R INTO WA_VM08R.


*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 STDPR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VM08R-STDPR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VM08R-STDPR.
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_VM08R_STR, 
APREI TYPE STRING,
KMBEW TYPE STRING,
NPEINH TYPE STRING,
PSTYP TYPE STRING,
STDPR TYPE STRING,
XBLNR TYPE STRING,
XBMAT TYPE STRING,
XRUEJ TYPE STRING,
XRUEM TYPE STRING,
XLIFO TYPE STRING,
BUDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VM08R_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_VM08R_STR-APREI sy-vline 
WA_VM08R_STR-KMBEW sy-vline 
WA_VM08R_STR-NPEINH sy-vline 
WA_VM08R_STR-PSTYP sy-vline 
WA_VM08R_STR-STDPR sy-vline 
WA_VM08R_STR-XBLNR sy-vline 
WA_VM08R_STR-XBMAT sy-vline 
WA_VM08R_STR-XRUEJ sy-vline 
WA_VM08R_STR-XRUEM sy-vline 
WA_VM08R_STR-XLIFO sy-vline 
WA_VM08R_STR-BUDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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