ABAP Select data from SAP table RFVIRFSUDE 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 RFVIRFSUDE 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 RFVIRFSUDE. 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 RFVIRFSUDE 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_RFVIRFSUDE TYPE STANDARD TABLE OF RFVIRFSUDE,
      WA_RFVIRFSUDE TYPE RFVIRFSUDE,
      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: <RFVIRFSUDE> TYPE RFVIRFSUDE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFVIRFSUDE
*  INTO TABLE @DATA(IT_RFVIRFSUDE2).
*--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_RFVIRFSUDE INDEX 1 INTO DATA(WA_RFVIRFSUDE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFVIRFSUDE>-MANDT = 1.
<RFVIRFSUDE>-SPARTID = 1.
<RFVIRFSUDE>-SFAVTYPE = 1.
<RFVIRFSUDE>-SIDGSUPPLY = 1.
<RFVIRFSUDE>-SIDGDEMAND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFVIRFSUDE-RERF, sy-vline,
  WA_RFVIRFSUDE-DERF, sy-vline,
  WA_RFVIRFSUDE-TERF, sy-vline,
  WA_RFVIRFSUDE-REHER, sy-vline,
  WA_RFVIRFSUDE-RBEAR, sy-vline,
  WA_RFVIRFSUDE-DBEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFVIRFSUDE 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_RFVIRFSUDE 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_RFVIRFSUDE INTO WA_RFVIRFSUDE.


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

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

*Conversion exit CUNIT, internal->external for field AREAKEY
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RFVIRFSUDE-AREAKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIRFSUDE-AREAKEY.
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_RFVIRFSUDE_STR, 
MANDT TYPE STRING,
SPARTID TYPE STRING,
SFAVTYPE TYPE STRING,
SIDGSUPPLY TYPE STRING,
SIDGDEMAND TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
SSTATE TYPE STRING,
DSTATE TYPE STRING,
CHNGIND TYPE STRING,
JMARKED TYPE STRING,
JFAVORIT TYPE STRING,
PCORREL TYPE STRING,
SPARTIDOBJ TYPE STRING,
SIDLSUPPLY TYPE STRING,
SIDLDEMAND TYPE STRING,
XSTATE TYPE STRING,
JVANISHED TYPE STRING,
XOBJTYPE TYPE STRING,
XEYECATCH TYPE STRING,
XOBJGROUP TYPE STRING,
XMEMOTEXT TYPE STRING,
PRENTEXCL TYPE STRING,
PRENTINCL TYPE STRING,
PRENTAREAEXCL TYPE STRING,
PRENTAREAINCL TYPE STRING,
PSIZEALL TYPE STRING,
PSIZEUSE TYPE STRING,
NROOMFULL TYPE STRING,
NROOMHALF TYPE STRING,
XROOMDATA TYPE STRING,
CURRKEY TYPE STRING,
AREAKEY TYPE STRING,
JIMAGES TYPE STRING,
XADDRESS TYPE STRING,
XFAVICON TYPE STRING,
XDELETE TYPE STRING,
XVANISHED TYPE STRING,
XFAVORIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFVIRFSUDE_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_RFVIRFSUDE_STR-MANDT sy-vline 
WA_RFVIRFSUDE_STR-SPARTID sy-vline 
WA_RFVIRFSUDE_STR-SFAVTYPE sy-vline 
WA_RFVIRFSUDE_STR-SIDGSUPPLY sy-vline 
WA_RFVIRFSUDE_STR-SIDGDEMAND sy-vline 
WA_RFVIRFSUDE_STR-RERF sy-vline 
WA_RFVIRFSUDE_STR-DERF sy-vline 
WA_RFVIRFSUDE_STR-TERF sy-vline 
WA_RFVIRFSUDE_STR-REHER sy-vline 
WA_RFVIRFSUDE_STR-RBEAR sy-vline 
WA_RFVIRFSUDE_STR-DBEAR sy-vline 
WA_RFVIRFSUDE_STR-TBEAR sy-vline 
WA_RFVIRFSUDE_STR-RBHER sy-vline 
WA_RFVIRFSUDE_STR-SSTATE sy-vline 
WA_RFVIRFSUDE_STR-DSTATE sy-vline 
WA_RFVIRFSUDE_STR-CHNGIND sy-vline 
WA_RFVIRFSUDE_STR-JMARKED sy-vline 
WA_RFVIRFSUDE_STR-JFAVORIT sy-vline 
WA_RFVIRFSUDE_STR-PCORREL sy-vline 
WA_RFVIRFSUDE_STR-SPARTIDOBJ sy-vline 
WA_RFVIRFSUDE_STR-SIDLSUPPLY sy-vline 
WA_RFVIRFSUDE_STR-SIDLDEMAND sy-vline 
WA_RFVIRFSUDE_STR-XSTATE sy-vline 
WA_RFVIRFSUDE_STR-JVANISHED sy-vline 
WA_RFVIRFSUDE_STR-XOBJTYPE sy-vline 
WA_RFVIRFSUDE_STR-XEYECATCH sy-vline 
WA_RFVIRFSUDE_STR-XOBJGROUP sy-vline 
WA_RFVIRFSUDE_STR-XMEMOTEXT sy-vline 
WA_RFVIRFSUDE_STR-PRENTEXCL sy-vline 
WA_RFVIRFSUDE_STR-PRENTINCL sy-vline 
WA_RFVIRFSUDE_STR-PRENTAREAEXCL sy-vline 
WA_RFVIRFSUDE_STR-PRENTAREAINCL sy-vline 
WA_RFVIRFSUDE_STR-PSIZEALL sy-vline 
WA_RFVIRFSUDE_STR-PSIZEUSE sy-vline 
WA_RFVIRFSUDE_STR-NROOMFULL sy-vline 
WA_RFVIRFSUDE_STR-NROOMHALF sy-vline 
WA_RFVIRFSUDE_STR-XROOMDATA sy-vline 
WA_RFVIRFSUDE_STR-CURRKEY sy-vline 
WA_RFVIRFSUDE_STR-AREAKEY sy-vline 
WA_RFVIRFSUDE_STR-JIMAGES sy-vline 
WA_RFVIRFSUDE_STR-XADDRESS sy-vline 
WA_RFVIRFSUDE_STR-XFAVICON sy-vline 
WA_RFVIRFSUDE_STR-XDELETE sy-vline 
WA_RFVIRFSUDE_STR-XVANISHED sy-vline 
WA_RFVIRFSUDE_STR-XFAVORIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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