ABAP Select data from SAP table VEDAKOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VEDAKOM
*  INTO TABLE @DATA(IT_VEDAKOM2).
*--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_VEDAKOM INDEX 1 INTO DATA(WA_VEDAKOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VEDAKOM>-VLAUFZ = 1.
<VEDAKOM>-VLAUEZ = 1.
<VEDAKOM>-VLAUFK = 1.
<VEDAKOM>-VINSDAT = 1.
<VEDAKOM>-VABNDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VEDAKOM-VBEGDAT, sy-vline,
  WA_VEDAKOM-VUNTDAT, sy-vline,
  WA_VEDAKOM-VKUESCH, sy-vline,
  WA_VEDAKOM-VAKTSCH, sy-vline,
  WA_VEDAKOM-VEINDAT, sy-vline,
  WA_VEDAKOM-VWUNDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VEDAKOM 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_VEDAKOM 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_VEDAKOM INTO WA_VEDAKOM.


*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_VEDAKOM_STR, 
VLAUFZ TYPE STRING,
VLAUEZ TYPE STRING,
VLAUFK TYPE STRING,
VINSDAT TYPE STRING,
VABNDAT TYPE STRING,
VBEGDAT TYPE STRING,
VUNTDAT TYPE STRING,
VKUESCH TYPE STRING,
VAKTSCH TYPE STRING,
VEINDAT TYPE STRING,
VWUNDAT TYPE STRING,
VKUEPAR TYPE STRING,
VKUEGRU TYPE STRING,
VENDDAT TYPE STRING,
VBELKUE TYPE STRING,
VBEDKUE TYPE STRING,
VBEGREG TYPE STRING,
VVORZEIT TYPE STRING,
VVOREIN TYPE STRING,
VDEMDAT TYPE STRING,
VENDREG TYPE STRING,
VASDA TYPE STRING,
VASDR TYPE STRING,
DUMMY_VEDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VEDAKOM_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_VEDAKOM_STR-VLAUFZ sy-vline 
WA_VEDAKOM_STR-VLAUEZ sy-vline 
WA_VEDAKOM_STR-VLAUFK sy-vline 
WA_VEDAKOM_STR-VINSDAT sy-vline 
WA_VEDAKOM_STR-VABNDAT sy-vline 
WA_VEDAKOM_STR-VBEGDAT sy-vline 
WA_VEDAKOM_STR-VUNTDAT sy-vline 
WA_VEDAKOM_STR-VKUESCH sy-vline 
WA_VEDAKOM_STR-VAKTSCH sy-vline 
WA_VEDAKOM_STR-VEINDAT sy-vline 
WA_VEDAKOM_STR-VWUNDAT sy-vline 
WA_VEDAKOM_STR-VKUEPAR sy-vline 
WA_VEDAKOM_STR-VKUEGRU sy-vline 
WA_VEDAKOM_STR-VENDDAT sy-vline 
WA_VEDAKOM_STR-VBELKUE sy-vline 
WA_VEDAKOM_STR-VBEDKUE sy-vline 
WA_VEDAKOM_STR-VBEGREG sy-vline 
WA_VEDAKOM_STR-VVORZEIT sy-vline 
WA_VEDAKOM_STR-VVOREIN sy-vline 
WA_VEDAKOM_STR-VDEMDAT sy-vline 
WA_VEDAKOM_STR-VENDREG sy-vline 
WA_VEDAKOM_STR-VASDA sy-vline 
WA_VEDAKOM_STR-VASDR sy-vline 
WA_VEDAKOM_STR-DUMMY_VEDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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