ABAP Select data from SAP table REFXCN_S_VERSION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REFXCN_S_VERSION
*  INTO TABLE @DATA(IT_REFXCN_S_VERSION2).
*--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_REFXCN_S_VERSION INDEX 1 INTO DATA(WA_REFXCN_S_VERSION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REFXCN_S_VERSION>-RECNCHRC = 1.
<REFXCN_S_VERSION>-INTRENOM = 1.
<REFXCN_S_VERSION>-INTRENOV = 1.
<REFXCN_S_VERSION>-BUKRS = 1.
<REFXCN_S_VERSION>-RECNNRFM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REFXCN_S_VERSION-RECNVRNO, sy-vline,
  WA_REFXCN_S_VERSION-RECNNRFV, sy-vline,
  WA_REFXCN_S_VERSION-RECNREMK, sy-vline,
  WA_REFXCN_S_VERSION-RECNSTUS, sy-vline,
  WA_REFXCN_S_VERSION-RECNSTUT, sy-vline,
  WA_REFXCN_S_VERSION-RECNIEFF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REFXCN_S_VERSION 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_REFXCN_S_VERSION 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_REFXCN_S_VERSION INTO WA_REFXCN_S_VERSION.


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

*Conversion exit ALPHA, internal->external for field RECNNRFV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REFXCN_S_VERSION-RECNNRFV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REFXCN_S_VERSION-RECNNRFV.
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_REFXCN_S_VERSION_STR, 
RECNCHRC TYPE STRING,
INTRENOM TYPE STRING,
INTRENOV TYPE STRING,
BUKRS TYPE STRING,
RECNNRFM TYPE STRING,
RECNVRNO TYPE STRING,
RECNNRFV TYPE STRING,
RECNREMK TYPE STRING,
RECNSTUS TYPE STRING,
RECNSTUT TYPE STRING,
RECNIEFF TYPE STRING,
RECNDELE TYPE STRING,
RBISNORM TYPE STRING,
RBISHIER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REFXCN_S_VERSION_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_REFXCN_S_VERSION_STR-RECNCHRC sy-vline 
WA_REFXCN_S_VERSION_STR-INTRENOM sy-vline 
WA_REFXCN_S_VERSION_STR-INTRENOV sy-vline 
WA_REFXCN_S_VERSION_STR-BUKRS sy-vline 
WA_REFXCN_S_VERSION_STR-RECNNRFM sy-vline 
WA_REFXCN_S_VERSION_STR-RECNVRNO sy-vline 
WA_REFXCN_S_VERSION_STR-RECNNRFV sy-vline 
WA_REFXCN_S_VERSION_STR-RECNREMK sy-vline 
WA_REFXCN_S_VERSION_STR-RECNSTUS sy-vline 
WA_REFXCN_S_VERSION_STR-RECNSTUT sy-vline 
WA_REFXCN_S_VERSION_STR-RECNIEFF sy-vline 
WA_REFXCN_S_VERSION_STR-RECNDELE sy-vline 
WA_REFXCN_S_VERSION_STR-RBISNORM sy-vline 
WA_REFXCN_S_VERSION_STR-RBISHIER sy-vline      INTO ld_text SEPARATED BY SPACE.

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