ABAP Select data from SAP table XDM42V into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP XDM42V 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 XDM42V. 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 XDM42V 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_XDM42V TYPE STANDARD TABLE OF XDM42V,
      WA_XDM42V TYPE XDM42V,
      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: <XDM42V> TYPE XDM42V.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_XDM42V.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM XDM42V
  INTO TABLE IT_XDM42V.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM XDM42V
*  INTO TABLE @DATA(IT_XDM42V2).
*--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_XDM42V INDEX 1 INTO DATA(WA_XDM42V2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_XDM42V ASSIGNING <XDM42V>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<XDM42V>-VRSFLAG = 1.
<XDM42V>-ENTIDTO = 1.
<XDM42V>-AS4LOCAL = 1.
<XDM42V>-ENTIDFROM = 1.
<XDM42V>-EBROLNR = 1.

ENDLOOP.

LOOP AT IT_XDM42V INTO WA_XDM42V.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_XDM42V-SPRACHE, sy-vline,
  WA_XDM42V-FLG_DEF, sy-vline,
  WA_XDM42V-FLG_COM, sy-vline,
  WA_XDM42V-EBVAR, sy-vline,
  WA_XDM42V-EBTYP, sy-vline,
  WA_XDM42V-CARD1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_XDM42V 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_XDM42V 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_XDM42V INTO WA_XDM42V.


*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 ISOLA, internal->external for field SPRACHE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_XDM42V-SPRACHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_XDM42V-SPRACHE.
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_XDM42V_STR, 
VRSFLAG TYPE STRING,
ENTIDTO TYPE STRING,
AS4LOCAL TYPE STRING,
ENTIDFROM TYPE STRING,
EBROLNR TYPE STRING,
SPRACHE TYPE STRING,
FLG_DEF TYPE STRING,
FLG_COM TYPE STRING,
EBVAR TYPE STRING,
EBTYP TYPE STRING,
CARD1 TYPE STRING,
CARD2 TYPE STRING,
FSTUSER TYPE STRING,
FSTDATE TYPE STRING,
FSTTIME TYPE STRING,
LSTUSER TYPE STRING,
LSTDATE TYPE STRING,
LSTTIME TYPE STRING,
LOESCHZ TYPE STRING,
RELTXT1 TYPE STRING,
RELTXT2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_XDM42V_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_XDM42V_STR-VRSFLAG sy-vline 
WA_XDM42V_STR-ENTIDTO sy-vline 
WA_XDM42V_STR-AS4LOCAL sy-vline 
WA_XDM42V_STR-ENTIDFROM sy-vline 
WA_XDM42V_STR-EBROLNR sy-vline 
WA_XDM42V_STR-SPRACHE sy-vline 
WA_XDM42V_STR-FLG_DEF sy-vline 
WA_XDM42V_STR-FLG_COM sy-vline 
WA_XDM42V_STR-EBVAR sy-vline 
WA_XDM42V_STR-EBTYP sy-vline 
WA_XDM42V_STR-CARD1 sy-vline 
WA_XDM42V_STR-CARD2 sy-vline 
WA_XDM42V_STR-FSTUSER sy-vline 
WA_XDM42V_STR-FSTDATE sy-vline 
WA_XDM42V_STR-FSTTIME sy-vline 
WA_XDM42V_STR-LSTUSER sy-vline 
WA_XDM42V_STR-LSTDATE sy-vline 
WA_XDM42V_STR-LSTTIME sy-vline 
WA_XDM42V_STR-LOESCHZ sy-vline 
WA_XDM42V_STR-RELTXT1 sy-vline 
WA_XDM42V_STR-RELTXT2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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