ABAP Select data from SAP table VSDD300002 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VSDD300002 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 VSDD300002. 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 VSDD300002 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_VSDD300002 TYPE STANDARD TABLE OF VSDD300002,
      WA_VSDD300002 TYPE VSDD300002,
      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: <VSDD300002> TYPE VSDD300002.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VSDD300002.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VSDD300002
  INTO TABLE IT_VSDD300002.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VSDD300002
*  INTO TABLE @DATA(IT_VSDD3000022).
*--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_VSDD300002 INDEX 1 INTO DATA(WA_VSDD3000022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VSDD300002 ASSIGNING <VSDD300002>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VSDD300002>-SHLPNAME = 1.
<VSDD300002>-DDLANGUAGE = 1.
<VSDD300002>-DDTEXT = 1.
<VSDD300002>-ISSIMPLE = 1.
<VSDD300002>-ELEMEXI = 1.

ENDLOOP.

LOOP AT IT_VSDD300002 INTO WA_VSDD300002.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VSDD300002-NOFIELDS, sy-vline,
  WA_VSDD300002-ATTACHEXI, sy-vline,
  WA_VSDD300002-SELMETHOD, sy-vline,
  WA_VSDD300002-SELMTYPE, sy-vline,
  WA_VSDD300002-TEXTTAB, sy-vline,
  WA_VSDD300002-SELMEXIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VSDD300002 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_VSDD300002 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_VSDD300002 INTO WA_VSDD300002.


*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_VSDD300002_STR, 
SHLPNAME TYPE STRING,
DDLANGUAGE TYPE STRING,
DDTEXT TYPE STRING,
ISSIMPLE TYPE STRING,
ELEMEXI TYPE STRING,
NOFIELDS TYPE STRING,
ATTACHEXI TYPE STRING,
SELMETHOD TYPE STRING,
SELMTYPE TYPE STRING,
TEXTTAB TYPE STRING,
SELMEXIT TYPE STRING,
HOTKEY TYPE STRING,
DIALOGTYPE TYPE STRING,
ACTFLAG TYPE STRING,
AS4USER TYPE STRING,
AS4DATE TYPE STRING,
AS4TIME TYPE STRING,
AUTOSUGGEST TYPE STRING,
FUZZY_SEARCH TYPE STRING,
FUZZY_SIMILARITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VSDD300002_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_VSDD300002_STR-SHLPNAME sy-vline 
WA_VSDD300002_STR-DDLANGUAGE sy-vline 
WA_VSDD300002_STR-DDTEXT sy-vline 
WA_VSDD300002_STR-ISSIMPLE sy-vline 
WA_VSDD300002_STR-ELEMEXI sy-vline 
WA_VSDD300002_STR-NOFIELDS sy-vline 
WA_VSDD300002_STR-ATTACHEXI sy-vline 
WA_VSDD300002_STR-SELMETHOD sy-vline 
WA_VSDD300002_STR-SELMTYPE sy-vline 
WA_VSDD300002_STR-TEXTTAB sy-vline 
WA_VSDD300002_STR-SELMEXIT sy-vline 
WA_VSDD300002_STR-HOTKEY sy-vline 
WA_VSDD300002_STR-DIALOGTYPE sy-vline 
WA_VSDD300002_STR-ACTFLAG sy-vline 
WA_VSDD300002_STR-AS4USER sy-vline 
WA_VSDD300002_STR-AS4DATE sy-vline 
WA_VSDD300002_STR-AS4TIME sy-vline 
WA_VSDD300002_STR-AUTOSUGGEST sy-vline 
WA_VSDD300002_STR-FUZZY_SEARCH sy-vline 
WA_VSDD300002_STR-FUZZY_SIMILARITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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