ABAP Select data from SAP table RFVIMKB02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFVIMKB02 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 RFVIMKB02. 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 RFVIMKB02 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_RFVIMKB02 TYPE STANDARD TABLE OF RFVIMKB02,
      WA_RFVIMKB02 TYPE RFVIMKB02,
      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: <RFVIMKB02> TYPE RFVIMKB02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFVIMKB02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFVIMKB02
  INTO TABLE IT_RFVIMKB02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFVIMKB02
*  INTO TABLE @DATA(IT_RFVIMKB022).
*--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_RFVIMKB02 INDEX 1 INTO DATA(WA_RFVIMKB022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFVIMKB02 ASSIGNING <RFVIMKB02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFVIMKB02>-BUKRS = 1.
<RFVIMKB02>-GJAHR = 1.
<RFVIMKB02>-BELNR = 1.
<RFVIMKB02>-BUZEI = 1.
<RFVIMKB02>-BUDAT = 1.

ENDLOOP.

LOOP AT IT_RFVIMKB02 INTO WA_RFVIMKB02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFVIMKB02-WRBTR, sy-vline,
  WA_RFVIMKB02-WAERS, sy-vline,
  WA_RFVIMKB02-SGTXT, sy-vline,
  WA_RFVIMKB02-BLART, sy-vline,
  WA_RFVIMKB02-BSCHL, sy-vline,
  WA_RFVIMKB02-UMSKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFVIMKB02 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_RFVIMKB02 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_RFVIMKB02 INTO WA_RFVIMKB02.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RFVIMKB02-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIMKB02-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFVIMKB02-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIMKB02-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFVIMKB02-VERTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIMKB02-VERTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFVIMKB02-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIMKB02-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_RFVIMKB02-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIMKB02-IMKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFVIMKB02-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIMKB02-PRCTR.
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_RFVIMKB02_STR, 
BUKRS TYPE STRING,
GJAHR TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
BUDAT TYPE STRING,
WRBTR TYPE STRING,
WAERS TYPE STRING,
SGTXT TYPE STRING,
BLART TYPE STRING,
BSCHL TYPE STRING,
UMSKZ TYPE STRING,
SHKZG TYPE STRING,
ZFBDT TYPE STRING,
VERTT TYPE STRING,
VERTN TYPE STRING,
ZUONR TYPE STRING,
VBEWA TYPE STRING,
KUNNR TYPE STRING,
IMKEY TYPE STRING,
BLDAT TYPE STRING,
MWSKZ TYPE STRING,
XBLNR TYPE STRING,
ZTERM TYPE STRING,
ZLSPR TYPE STRING,
ZLSCH TYPE STRING,
HBKID TYPE STRING,
BVTYP TYPE STRING,
MANSP TYPE STRING,
MSCHL TYPE STRING,
MADAT TYPE STRING,
MANST TYPE STRING,
MABER TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
TXJCD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFVIMKB02_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_RFVIMKB02_STR-BUKRS sy-vline 
WA_RFVIMKB02_STR-GJAHR sy-vline 
WA_RFVIMKB02_STR-BELNR sy-vline 
WA_RFVIMKB02_STR-BUZEI sy-vline 
WA_RFVIMKB02_STR-BUDAT sy-vline 
WA_RFVIMKB02_STR-WRBTR sy-vline 
WA_RFVIMKB02_STR-WAERS sy-vline 
WA_RFVIMKB02_STR-SGTXT sy-vline 
WA_RFVIMKB02_STR-BLART sy-vline 
WA_RFVIMKB02_STR-BSCHL sy-vline 
WA_RFVIMKB02_STR-UMSKZ sy-vline 
WA_RFVIMKB02_STR-SHKZG sy-vline 
WA_RFVIMKB02_STR-ZFBDT sy-vline 
WA_RFVIMKB02_STR-VERTT sy-vline 
WA_RFVIMKB02_STR-VERTN sy-vline 
WA_RFVIMKB02_STR-ZUONR sy-vline 
WA_RFVIMKB02_STR-VBEWA sy-vline 
WA_RFVIMKB02_STR-KUNNR sy-vline 
WA_RFVIMKB02_STR-IMKEY sy-vline 
WA_RFVIMKB02_STR-BLDAT sy-vline 
WA_RFVIMKB02_STR-MWSKZ sy-vline 
WA_RFVIMKB02_STR-XBLNR sy-vline 
WA_RFVIMKB02_STR-ZTERM sy-vline 
WA_RFVIMKB02_STR-ZLSPR sy-vline 
WA_RFVIMKB02_STR-ZLSCH sy-vline 
WA_RFVIMKB02_STR-HBKID sy-vline 
WA_RFVIMKB02_STR-BVTYP sy-vline 
WA_RFVIMKB02_STR-MANSP sy-vline 
WA_RFVIMKB02_STR-MSCHL sy-vline 
WA_RFVIMKB02_STR-MADAT sy-vline 
WA_RFVIMKB02_STR-MANST sy-vline 
WA_RFVIMKB02_STR-MABER sy-vline 
WA_RFVIMKB02_STR-GSBER sy-vline 
WA_RFVIMKB02_STR-PRCTR sy-vline 
WA_RFVIMKB02_STR-TXJCD sy-vline      INTO ld_text SEPARATED BY SPACE.

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