ABAP Select data from SAP table V_TFK047I_C into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_TFK047I_C 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_TFK047I_C. 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_TFK047I_C 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_TFK047I_C TYPE STANDARD TABLE OF V_TFK047I_C,
      WA_V_TFK047I_C TYPE V_TFK047I_C,
      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_TFK047I_C> TYPE V_TFK047I_C.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_TFK047I_C.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_TFK047I_C
  INTO TABLE IT_V_TFK047I_C.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_TFK047I_C
*  INTO TABLE @DATA(IT_V_TFK047I_C2).
*--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_TFK047I_C INDEX 1 INTO DATA(WA_V_TFK047I_C2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_TFK047I_C ASSIGNING <V_TFK047I_C>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_TFK047I_C>-MANDT = 1.
<V_TFK047I_C>-CHGID = 1.
<V_TFK047I_C>-WAERS = 1.
<V_TFK047I_C>-CHGTY = 1.
<V_TFK047I_C>-LNUMM = 1.

ENDLOOP.

LOOP AT IT_V_TFK047I_C INTO WA_V_TFK047I_C.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_TFK047I_C-BONIT, sy-vline,
  WA_V_TFK047I_C-MAHNB, sy-vline,
  WA_V_TFK047I_C-CHGTX, sy-vline,
  WA_V_TFK047I_C-CHTXT, sy-vline,
  WA_V_TFK047I_C-MAHNG, sy-vline,
  WA_V_TFK047I_C-MAXDF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_TFK047I_C 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_TFK047I_C 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_TFK047I_C INTO WA_V_TFK047I_C.


*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_TFK047I_C_STR, 
MANDT TYPE STRING,
CHGID TYPE STRING,
WAERS TYPE STRING,
CHGTY TYPE STRING,
LNUMM TYPE STRING,
BONIT TYPE STRING,
MAHNB TYPE STRING,
CHGTX TYPE STRING,
CHTXT TYPE STRING,
MAHNG TYPE STRING,
MAXDF TYPE STRING,
MPROZ TYPE STRING,
OFFST TYPE STRING,
RNDRL TYPE STRING,
RNDUN TYPE STRING,
RNDRF TYPE STRING,
RNDUF TYPE STRING,
CHFAK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_TFK047I_C_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_TFK047I_C_STR-MANDT sy-vline 
WA_V_TFK047I_C_STR-CHGID sy-vline 
WA_V_TFK047I_C_STR-WAERS sy-vline 
WA_V_TFK047I_C_STR-CHGTY sy-vline 
WA_V_TFK047I_C_STR-LNUMM sy-vline 
WA_V_TFK047I_C_STR-BONIT sy-vline 
WA_V_TFK047I_C_STR-MAHNB sy-vline 
WA_V_TFK047I_C_STR-CHGTX sy-vline 
WA_V_TFK047I_C_STR-CHTXT sy-vline 
WA_V_TFK047I_C_STR-MAHNG sy-vline 
WA_V_TFK047I_C_STR-MAXDF sy-vline 
WA_V_TFK047I_C_STR-MPROZ sy-vline 
WA_V_TFK047I_C_STR-OFFST sy-vline 
WA_V_TFK047I_C_STR-RNDRL sy-vline 
WA_V_TFK047I_C_STR-RNDUN sy-vline 
WA_V_TFK047I_C_STR-RNDRF sy-vline 
WA_V_TFK047I_C_STR-RNDUF sy-vline 
WA_V_TFK047I_C_STR-CHFAK sy-vline      INTO ld_text SEPARATED BY SPACE.

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