ABAP Select data from SAP table VSDM020000 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VSDM020000 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 VSDM020000. 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 VSDM020000 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_VSDM020000 TYPE STANDARD TABLE OF VSDM020000,
      WA_VSDM020000 TYPE VSDM020000,
      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: <VSDM020000> TYPE VSDM020000.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VSDM020000.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VSDM020000
  INTO TABLE IT_VSDM020000.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VSDM020000
*  INTO TABLE @DATA(IT_VSDM0200002).
*--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_VSDM020000 INDEX 1 INTO DATA(WA_VSDM0200002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VSDM020000 ASSIGNING <VSDM020000>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VSDM020000>-ENTID = 1.
<VSDM020000>-AS4LOCAL = 1.
<VSDM020000>-SPRACHE = 1.
<VSDM020000>-REF_CLUST = 1.
<VSDM020000>-FLG_DEF = 1.

ENDLOOP.

LOOP AT IT_VSDM020000 INTO WA_VSDM020000.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VSDM020000-FLG_COM, sy-vline,
  WA_VSDM020000-FLG_EXA, sy-vline,
  WA_VSDM020000-FLG_VAR, sy-vline,
  WA_VSDM020000-FLG_VIEW, sy-vline,
  WA_VSDM020000-ZEIT, sy-vline,
  WA_VSDM020000-ZEINHT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VSDM020000 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_VSDM020000 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_VSDM020000 INTO WA_VSDM020000.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_VSDM020000_STR, 
ENTID TYPE STRING,
AS4LOCAL TYPE STRING,
SPRACHE TYPE STRING,
REF_CLUST TYPE STRING,
FLG_DEF TYPE STRING,
FLG_COM TYPE STRING,
FLG_EXA TYPE STRING,
FLG_VAR TYPE STRING,
FLG_VIEW TYPE STRING,
ZEIT TYPE STRING,
ZEINHT TYPE STRING,
FLG_CUST TYPE STRING,
FSTUSER TYPE STRING,
FSTDATE TYPE STRING,
FSTTIME TYPE STRING,
LSTUSER TYPE STRING,
LSTDATE TYPE STRING,
LSTTIME TYPE STRING,
LOESCHZ TYPE STRING,
LANGBEZ TYPE STRING,
GRAFBEZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VSDM020000_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_VSDM020000_STR-ENTID sy-vline 
WA_VSDM020000_STR-AS4LOCAL sy-vline 
WA_VSDM020000_STR-SPRACHE sy-vline 
WA_VSDM020000_STR-REF_CLUST sy-vline 
WA_VSDM020000_STR-FLG_DEF sy-vline 
WA_VSDM020000_STR-FLG_COM sy-vline 
WA_VSDM020000_STR-FLG_EXA sy-vline 
WA_VSDM020000_STR-FLG_VAR sy-vline 
WA_VSDM020000_STR-FLG_VIEW sy-vline 
WA_VSDM020000_STR-ZEIT sy-vline 
WA_VSDM020000_STR-ZEINHT sy-vline 
WA_VSDM020000_STR-FLG_CUST sy-vline 
WA_VSDM020000_STR-FSTUSER sy-vline 
WA_VSDM020000_STR-FSTDATE sy-vline 
WA_VSDM020000_STR-FSTTIME sy-vline 
WA_VSDM020000_STR-LSTUSER sy-vline 
WA_VSDM020000_STR-LSTDATE sy-vline 
WA_VSDM020000_STR-LSTTIME sy-vline 
WA_VSDM020000_STR-LOESCHZ sy-vline 
WA_VSDM020000_STR-LANGBEZ sy-vline 
WA_VSDM020000_STR-GRAFBEZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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