ABAP Select data from SAP table RELUBIEXTDV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELUBIEXTDV
*  INTO TABLE @DATA(IT_RELUBIEXTDV2).
*--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_RELUBIEXTDV INDEX 1 INTO DATA(WA_RELUBIEXTDV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELUBIEXTDV>-BIBUKRS = 1.
<RELUBIEXTDV>-DELIMKE01 = 1.
<RELUBIEXTDV>-BIRECNNR = 1.
<RELUBIEXTDV>-DELIMKE02 = 1.
<RELUBIEXTDV>-BIRECORDTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELUBIEXTDV-DELIMKE03, sy-vline,
  WA_RELUBIEXTDV-CHARACTERISTIC, sy-vline,
  WA_RELUBIEXTDV-DELIMDV01, sy-vline,
  WA_RELUBIEXTDV-XMCHARACTERISTIC, sy-vline,
  WA_RELUBIEXTDV-DELIMDV02, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_RELUBIEXTDV 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_RELUBIEXTDV 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_RELUBIEXTDV INTO WA_RELUBIEXTDV.


*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 BIRECNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RELUBIEXTDV-BIRECNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELUBIEXTDV-BIRECNNR.
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_RELUBIEXTDV_STR, 
BIBUKRS TYPE STRING,
DELIMKE01 TYPE STRING,
BIRECNNR TYPE STRING,
DELIMKE02 TYPE STRING,
BIRECORDTYPE TYPE STRING,
DELIMKE03 TYPE STRING,
CHARACTERISTIC TYPE STRING,
DELIMDV01 TYPE STRING,
XMCHARACTERISTIC TYPE STRING,
DELIMDV02 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELUBIEXTDV_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_RELUBIEXTDV_STR-BIBUKRS sy-vline 
WA_RELUBIEXTDV_STR-DELIMKE01 sy-vline 
WA_RELUBIEXTDV_STR-BIRECNNR sy-vline 
WA_RELUBIEXTDV_STR-DELIMKE02 sy-vline 
WA_RELUBIEXTDV_STR-BIRECORDTYPE sy-vline 
WA_RELUBIEXTDV_STR-DELIMKE03 sy-vline 
WA_RELUBIEXTDV_STR-CHARACTERISTIC sy-vline 
WA_RELUBIEXTDV_STR-DELIMDV01 sy-vline 
WA_RELUBIEXTDV_STR-XMCHARACTERISTIC sy-vline 
WA_RELUBIEXTDV_STR-DELIMDV02 sy-vline      INTO ld_text SEPARATED BY SPACE.

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