ABAP Select data from SAP table VTVMDVVO into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VTVMDVVO 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 VTVMDVVO. 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 VTVMDVVO 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_VTVMDVVO TYPE STANDARD TABLE OF VTVMDVVO,
      WA_VTVMDVVO TYPE VTVMDVVO,
      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: <VTVMDVVO> TYPE VTVMDVVO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTVMDVVO
*  INTO TABLE @DATA(IT_VTVMDVVO2).
*--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_VTVMDVVO INDEX 1 INTO DATA(WA_VTVMDVVO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTVMDVVO>-VOLART = 1.
<VTVMDVVO>-ULTYPE = 1.
<VTVMDVVO>-VNAME = 1.
<VTVMDVVO>-UREFERENZ = 1.
<VTVMDVVO>-UFCURR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTVMDVVO-UTCURR, sy-vline,
  WA_VTVMDVVO-URGATT, sy-vline,
  WA_VTVMDVVO-UIDX, sy-vline,
  WA_VTVMDVVO-USZKART, sy-vline,
  WA_VTVMDVVO-USZKCURR, sy-vline,
  WA_VTVMDVVO-COMMID_VOL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTVMDVVO 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_VTVMDVVO 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_VTVMDVVO INTO WA_VTVMDVVO.


*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 URGATT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTVMDVVO-URGATT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTVMDVVO-URGATT.
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_VTVMDVVO_STR, 
VOLART TYPE STRING,
ULTYPE TYPE STRING,
VNAME TYPE STRING,
UREFERENZ TYPE STRING,
UFCURR TYPE STRING,
UTCURR TYPE STRING,
URGATT TYPE STRING,
UIDX TYPE STRING,
USZKART TYPE STRING,
USZKCURR TYPE STRING,
COMMID_VOL TYPE STRING,
VALUEDATE TYPE STRING,
PROFIL TYPE STRING,
VOLA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTVMDVVO_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_VTVMDVVO_STR-VOLART sy-vline 
WA_VTVMDVVO_STR-ULTYPE sy-vline 
WA_VTVMDVVO_STR-VNAME sy-vline 
WA_VTVMDVVO_STR-UREFERENZ sy-vline 
WA_VTVMDVVO_STR-UFCURR sy-vline 
WA_VTVMDVVO_STR-UTCURR sy-vline 
WA_VTVMDVVO_STR-URGATT sy-vline 
WA_VTVMDVVO_STR-UIDX sy-vline 
WA_VTVMDVVO_STR-USZKART sy-vline 
WA_VTVMDVVO_STR-USZKCURR sy-vline 
WA_VTVMDVVO_STR-COMMID_VOL sy-vline 
WA_VTVMDVVO_STR-VALUEDATE sy-vline 
WA_VTVMDVVO_STR-PROFIL sy-vline 
WA_VTVMDVVO_STR-VOLA sy-vline      INTO ld_text SEPARATED BY SPACE.

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