ABAP Select data from SAP table V_TFK100C into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_TFK100C 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_TFK100C. 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_TFK100C 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_TFK100C TYPE STANDARD TABLE OF V_TFK100C,
      WA_V_TFK100C TYPE V_TFK100C,
      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_TFK100C> TYPE V_TFK100C.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_TFK100C.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_TFK100C
  INTO TABLE IT_V_TFK100C.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TFK100C
*  INTO TABLE @DATA(IT_V_TFK100C2).
*--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_TFK100C INDEX 1 INTO DATA(WA_V_TFK100C2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_TFK100C ASSIGNING <V_TFK100C>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TFK100C>-MANDT = 1.
<V_TFK100C>-APPLK = 1.
<V_TFK100C>-CJROL = 1.
<V_TFK100C>-XDPST = 1.
<V_TFK100C>-XTRNS = 1.

ENDLOOP.

LOOP AT IT_V_TFK100C INTO WA_V_TFK100C.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TFK100C-XDFRC, sy-vline,
  WA_V_TFK100C-XWDRW, sy-vline,
  WA_V_TFK100C-XOPEN, sy-vline,
  WA_V_TFK100C-XCLSE, sy-vline,
  WA_V_TFK100C-XCHAG, sy-vline,
  WA_V_TFK100C-XSOPN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TFK100C 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_TFK100C 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_TFK100C INTO WA_V_TFK100C.


*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_V_TFK100C_STR, 
MANDT TYPE STRING,
APPLK TYPE STRING,
CJROL TYPE STRING,
XDPST TYPE STRING,
XTRNS TYPE STRING,
XDFRC TYPE STRING,
XWDRW TYPE STRING,
XOPEN TYPE STRING,
XCLSE TYPE STRING,
XCHAG TYPE STRING,
XSOPN TYPE STRING,
XSCLS TYPE STRING,
XCDCL TYPE STRING,
XCDSH TYPE STRING,
XFPB0 TYPE STRING,
XDPLT TYPE STRING,
XCODN TYPE STRING,
XHSDT TYPE STRING,
XCLLT TYPE STRING,
XCDAM TYPE STRING,
XSTCJ TYPE STRING,
XSTPY TYPE STRING,
XCRZD TYPE STRING,
XCRDP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TFK100C_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_TFK100C_STR-MANDT sy-vline 
WA_V_TFK100C_STR-APPLK sy-vline 
WA_V_TFK100C_STR-CJROL sy-vline 
WA_V_TFK100C_STR-XDPST sy-vline 
WA_V_TFK100C_STR-XTRNS sy-vline 
WA_V_TFK100C_STR-XDFRC sy-vline 
WA_V_TFK100C_STR-XWDRW sy-vline 
WA_V_TFK100C_STR-XOPEN sy-vline 
WA_V_TFK100C_STR-XCLSE sy-vline 
WA_V_TFK100C_STR-XCHAG sy-vline 
WA_V_TFK100C_STR-XSOPN sy-vline 
WA_V_TFK100C_STR-XSCLS sy-vline 
WA_V_TFK100C_STR-XCDCL sy-vline 
WA_V_TFK100C_STR-XCDSH sy-vline 
WA_V_TFK100C_STR-XFPB0 sy-vline 
WA_V_TFK100C_STR-XDPLT sy-vline 
WA_V_TFK100C_STR-XCODN sy-vline 
WA_V_TFK100C_STR-XHSDT sy-vline 
WA_V_TFK100C_STR-XCLLT sy-vline 
WA_V_TFK100C_STR-XCDAM sy-vline 
WA_V_TFK100C_STR-XSTCJ sy-vline 
WA_V_TFK100C_STR-XSTPY sy-vline 
WA_V_TFK100C_STR-XCRZD sy-vline 
WA_V_TFK100C_STR-XCRDP sy-vline      INTO ld_text SEPARATED BY SPACE.

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