ABAP Select data from SAP table FKK_VT_TR_GRID into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_VT_TR_GRID
*  INTO TABLE @DATA(IT_FKK_VT_TR_GRID2).
*--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_FKK_VT_TR_GRID INDEX 1 INTO DATA(WA_FKK_VT_TR_GRID2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_VT_TR_GRID>-DATFR = 1.
<FKK_VT_TR_GRID>-TIMFR = 1.
<FKK_VT_TR_GRID>-DATTO = 1.
<FKK_VT_TR_GRID>-TIMTO = 1.
<FKK_VT_TR_GRID>-VTTRTT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_VT_TR_GRID-MANDT, sy-vline,
  WA_FKK_VT_TR_GRID-VTKEY, sy-vline,
  WA_FKK_VT_TR_GRID-VTTRG, sy-vline,
  WA_FKK_VT_TR_GRID-VTTRT, sy-vline,
  WA_FKK_VT_TR_GRID-VTTRI, sy-vline,
  WA_FKK_VT_TR_GRID-VALFR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_VT_TR_GRID 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_FKK_VT_TR_GRID 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_FKK_VT_TR_GRID INTO WA_FKK_VT_TR_GRID.


*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 VTKEY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_VT_TR_GRID-VTKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_VT_TR_GRID-VTKEY.
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_FKK_VT_TR_GRID_STR, 
DATFR TYPE STRING,
TIMFR TYPE STRING,
DATTO TYPE STRING,
TIMTO TYPE STRING,
VTTRTT TYPE STRING,
MANDT TYPE STRING,
VTKEY TYPE STRING,
VTTRG TYPE STRING,
VTTRT TYPE STRING,
VTTRI TYPE STRING,
VALFR TYPE STRING,
VALFR_LOCL TYPE STRING,
VALTO TYPE STRING,
VALTO_LOCL TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
AENAM TYPE STRING,
VTTRN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_VT_TR_GRID_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_FKK_VT_TR_GRID_STR-DATFR sy-vline 
WA_FKK_VT_TR_GRID_STR-TIMFR sy-vline 
WA_FKK_VT_TR_GRID_STR-DATTO sy-vline 
WA_FKK_VT_TR_GRID_STR-TIMTO sy-vline 
WA_FKK_VT_TR_GRID_STR-VTTRTT sy-vline 
WA_FKK_VT_TR_GRID_STR-MANDT sy-vline 
WA_FKK_VT_TR_GRID_STR-VTKEY sy-vline 
WA_FKK_VT_TR_GRID_STR-VTTRG sy-vline 
WA_FKK_VT_TR_GRID_STR-VTTRT sy-vline 
WA_FKK_VT_TR_GRID_STR-VTTRI sy-vline 
WA_FKK_VT_TR_GRID_STR-VALFR sy-vline 
WA_FKK_VT_TR_GRID_STR-VALFR_LOCL sy-vline 
WA_FKK_VT_TR_GRID_STR-VALTO sy-vline 
WA_FKK_VT_TR_GRID_STR-VALTO_LOCL sy-vline 
WA_FKK_VT_TR_GRID_STR-ERDAT sy-vline 
WA_FKK_VT_TR_GRID_STR-ERTIM sy-vline 
WA_FKK_VT_TR_GRID_STR-ERNAM sy-vline 
WA_FKK_VT_TR_GRID_STR-AEDAT sy-vline 
WA_FKK_VT_TR_GRID_STR-AETIM sy-vline 
WA_FKK_VT_TR_GRID_STR-AENAM sy-vline 
WA_FKK_VT_TR_GRID_STR-VTTRN sy-vline      INTO ld_text SEPARATED BY SPACE.

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