ABAP Select data from SAP table RBVD into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RBVD 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 RBVD. 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 RBVD 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_RBVD TYPE STANDARD TABLE OF RBVD,
      WA_RBVD TYPE RBVD,
      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: <RBVD> TYPE RBVD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RBVD
*  INTO TABLE @DATA(IT_RBVD2).
*--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_RBVD INDEX 1 INTO DATA(WA_RBVD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RBVD>-MANDT = 1.
<RBVD>-RBLNR = 1.
<RBVD>-RJAHR = 1.
<RBVD>-LFNUM = 1.
<RBVD>-EBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RBVD-LSNR, sy-vline,
  WA_RBVD-WERKS, sy-vline,
  WA_RBVD-XEINS, sy-vline,
  WA_RBVD-RETPO, sy-vline,
  WA_RBVD-MWSKZ1, sy-vline,
  WA_RBVD-WRBTR1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RBVD 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_RBVD 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_RBVD INTO WA_RBVD.


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

*Conversion exit GJAHR, internal->external for field RJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RBVD-RJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBVD-RJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RBVD-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RBVD-EBELN.
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_RBVD_STR, 
MANDT TYPE STRING,
RBLNR TYPE STRING,
RJAHR TYPE STRING,
LFNUM TYPE STRING,
EBELN TYPE STRING,
LSNR TYPE STRING,
WERKS TYPE STRING,
XEINS TYPE STRING,
RETPO TYPE STRING,
MWSKZ1 TYPE STRING,
WRBTR1 TYPE STRING,
WMWST1 TYPE STRING,
LIEFFN1 TYPE STRING,
LMWST1 TYPE STRING,
MWSKZ2 TYPE STRING,
WRBTR2 TYPE STRING,
WMWST2 TYPE STRING,
LIEFFN2 TYPE STRING,
LMWST2 TYPE STRING,
EINDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RBVD_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_RBVD_STR-MANDT sy-vline 
WA_RBVD_STR-RBLNR sy-vline 
WA_RBVD_STR-RJAHR sy-vline 
WA_RBVD_STR-LFNUM sy-vline 
WA_RBVD_STR-EBELN sy-vline 
WA_RBVD_STR-LSNR sy-vline 
WA_RBVD_STR-WERKS sy-vline 
WA_RBVD_STR-XEINS sy-vline 
WA_RBVD_STR-RETPO sy-vline 
WA_RBVD_STR-MWSKZ1 sy-vline 
WA_RBVD_STR-WRBTR1 sy-vline 
WA_RBVD_STR-WMWST1 sy-vline 
WA_RBVD_STR-LIEFFN1 sy-vline 
WA_RBVD_STR-LMWST1 sy-vline 
WA_RBVD_STR-MWSKZ2 sy-vline 
WA_RBVD_STR-WRBTR2 sy-vline 
WA_RBVD_STR-WMWST2 sy-vline 
WA_RBVD_STR-LIEFFN2 sy-vline 
WA_RBVD_STR-LMWST2 sy-vline 
WA_RBVD_STR-EINDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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