ABAP Select data from SAP table V_TVFT 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 V_TVFT 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 V_TVFT. 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 V_TVFT 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_V_TVFT TYPE STANDARD TABLE OF V_TVFT,
      WA_V_TVFT TYPE V_TVFT,
      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: <V_TVFT> TYPE V_TVFT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TVFT
*  INTO TABLE @DATA(IT_V_TVFT2).
*--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_V_TVFT INDEX 1 INTO DATA(WA_V_TVFT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TVFT>-MANDT = 1.
<V_TVFT>-FKPTY = 1.
<V_TVFT>-BEZEI = 1.
<V_TVFT>-FCGRP = 1.
<V_TVFT>-PARVW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TVFT-KSTAU, sy-vline,
  WA_V_TVFT-DATPR, sy-vline,
  WA_V_TVFT-DATAB, sy-vline,
  WA_V_TVFT-KNTTP, sy-vline,
  WA_V_TVFT-HERCO, sy-vline,
  WA_V_TVFT-ABREL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TVFT 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_V_TVFT 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_V_TVFT INTO WA_V_TVFT.


*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 PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_V_TVFT-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_TVFT-PARVW.
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_V_TVFT_STR, 
MANDT TYPE STRING,
FKPTY TYPE STRING,
BEZEI TYPE STRING,
FCGRP TYPE STRING,
PARVW TYPE STRING,
KSTAU TYPE STRING,
DATPR TYPE STRING,
DATAB TYPE STRING,
KNTTP TYPE STRING,
HERCO TYPE STRING,
ABREL TYPE STRING,
BESER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TVFT_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_V_TVFT_STR-MANDT sy-vline 
WA_V_TVFT_STR-FKPTY sy-vline 
WA_V_TVFT_STR-BEZEI sy-vline 
WA_V_TVFT_STR-FCGRP sy-vline 
WA_V_TVFT_STR-PARVW sy-vline 
WA_V_TVFT_STR-KSTAU sy-vline 
WA_V_TVFT_STR-DATPR sy-vline 
WA_V_TVFT_STR-DATAB sy-vline 
WA_V_TVFT_STR-KNTTP sy-vline 
WA_V_TVFT_STR-HERCO sy-vline 
WA_V_TVFT_STR-ABREL sy-vline 
WA_V_TVFT_STR-BESER sy-vline      INTO ld_text SEPARATED BY SPACE.

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