ABAP Select data from SAP table RFVDORNM 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 RFVDORNM 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 RFVDORNM. 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 RFVDORNM 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_RFVDORNM TYPE STANDARD TABLE OF RFVDORNM,
      WA_RFVDORNM TYPE RFVDORNM,
      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: <RFVDORNM> TYPE RFVDORNM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFVDORNM
*  INTO TABLE @DATA(IT_RFVDORNM2).
*--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_RFVDORNM INDEX 1 INTO DATA(WA_RFVDORNM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFVDORNM>-PARTNR = 1.
<RFVDORNM>-SORTL = 1.
<RFVDORNM>-XNAME = 1.
<RFVDORNM>-XVNAME = 1.
<RFVDORNM>-XTITEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFVDORNM-XATITEL, sy-vline,
  WA_RFVDORNM-ANRED, sy-vline,
  WA_RFVDORNM-XANRED, sy-vline,
  WA_RFVDORNM-ANRBF, sy-vline,
  WA_RFVDORNM-XANRBF, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_RFVDORNM 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_RFVDORNM 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_RFVDORNM INTO WA_RFVDORNM.


*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 PARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFVDORNM-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVDORNM-PARTNR.
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_RFVDORNM_STR, 
PARTNR TYPE STRING,
SORTL TYPE STRING,
XNAME TYPE STRING,
XVNAME TYPE STRING,
XTITEL TYPE STRING,
XATITEL TYPE STRING,
ANRED TYPE STRING,
XANRED TYPE STRING,
ANRBF TYPE STRING,
XANRBF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFVDORNM_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_RFVDORNM_STR-PARTNR sy-vline 
WA_RFVDORNM_STR-SORTL sy-vline 
WA_RFVDORNM_STR-XNAME sy-vline 
WA_RFVDORNM_STR-XVNAME sy-vline 
WA_RFVDORNM_STR-XTITEL sy-vline 
WA_RFVDORNM_STR-XATITEL sy-vline 
WA_RFVDORNM_STR-ANRED sy-vline 
WA_RFVDORNM_STR-XANRED sy-vline 
WA_RFVDORNM_STR-ANRBF sy-vline 
WA_RFVDORNM_STR-XANRBF sy-vline      INTO ld_text SEPARATED BY SPACE.

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