ABAP Select data from SAP table VTTK_VT14 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VTTK_VT14 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 VTTK_VT14. 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 VTTK_VT14 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_VTTK_VT14 TYPE STANDARD TABLE OF VTTK_VT14,
      WA_VTTK_VT14 TYPE VTTK_VT14,
      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: <VTTK_VT14> TYPE VTTK_VT14.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VTTK_VT14.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VTTK_VT14
  INTO TABLE IT_VTTK_VT14.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTTK_VT14
*  INTO TABLE @DATA(IT_VTTK_VT142).
*--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_VTTK_VT14 INDEX 1 INTO DATA(WA_VTTK_VT142).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VTTK_VT14 ASSIGNING <VTTK_VT14>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTTK_VT14>-SELTRLS = 1.
<VTTK_VT14>-TKNUM = 1.
<VTTK_VT14>-SHTYP = 1.
<VTTK_VT14>-TPLST = 1.
<VTTK_VT14>-TDLNR = 1.

ENDLOOP.

LOOP AT IT_VTTK_VT14 INTO WA_VTTK_VT14.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTTK_VT14-BLGEW, sy-vline,
  WA_VTTK_VT14-PER_WEIGHT, sy-vline,
  WA_VTTK_VT14-NTGEW, sy-vline,
  WA_VTTK_VT14-REST_GEW, sy-vline,
  WA_VTTK_VT14-BLVOL, sy-vline,
  WA_VTTK_VT14-PER_VOL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTTK_VT14 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_VTTK_VT14 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_VTTK_VT14 INTO WA_VTTK_VT14.


*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 TKNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTTK_VT14-TKNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTK_VT14-TKNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TDLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTTK_VT14-TDLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTTK_VT14-TDLNR.
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_VTTK_VT14_STR, 
SELTRLS TYPE STRING,
TKNUM TYPE STRING,
SHTYP TYPE STRING,
TPLST TYPE STRING,
TDLNR TYPE STRING,
BLGEW TYPE STRING,
PER_WEIGHT TYPE STRING,
NTGEW TYPE STRING,
REST_GEW TYPE STRING,
BLVOL TYPE STRING,
PER_VOL TYPE STRING,
NTVOL TYPE STRING,
REST_VOL TYPE STRING,
VSART TYPE STRING,
VSAVL TYPE STRING,
VSANL TYPE STRING,
LAUFK TYPE STRING,
BFART TYPE STRING,
VSBED TYPE STRING,
ABFER TYPE STRING,
ROUTE TYPE STRING,
TPBEZ TYPE STRING,
STDIS TYPE STRING,
DTDIS TYPE STRING,
STLBG TYPE STRING,
DPLBG TYPE STRING,
DALBG TYPE STRING,
STLAD TYPE STRING,
DPLEN TYPE STRING,
DALEN TYPE STRING,
STABF TYPE STRING,
DTABF TYPE STRING,
STTBG TYPE STRING,
DPTBG TYPE STRING,
DATBG TYPE STRING,
STTEN TYPE STRING,
DPTEN TYPE STRING,
DATEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTTK_VT14_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_VTTK_VT14_STR-SELTRLS sy-vline 
WA_VTTK_VT14_STR-TKNUM sy-vline 
WA_VTTK_VT14_STR-SHTYP sy-vline 
WA_VTTK_VT14_STR-TPLST sy-vline 
WA_VTTK_VT14_STR-TDLNR sy-vline 
WA_VTTK_VT14_STR-BLGEW sy-vline 
WA_VTTK_VT14_STR-PER_WEIGHT sy-vline 
WA_VTTK_VT14_STR-NTGEW sy-vline 
WA_VTTK_VT14_STR-REST_GEW sy-vline 
WA_VTTK_VT14_STR-BLVOL sy-vline 
WA_VTTK_VT14_STR-PER_VOL sy-vline 
WA_VTTK_VT14_STR-NTVOL sy-vline 
WA_VTTK_VT14_STR-REST_VOL sy-vline 
WA_VTTK_VT14_STR-VSART sy-vline 
WA_VTTK_VT14_STR-VSAVL sy-vline 
WA_VTTK_VT14_STR-VSANL sy-vline 
WA_VTTK_VT14_STR-LAUFK sy-vline 
WA_VTTK_VT14_STR-BFART sy-vline 
WA_VTTK_VT14_STR-VSBED sy-vline 
WA_VTTK_VT14_STR-ABFER sy-vline 
WA_VTTK_VT14_STR-ROUTE sy-vline 
WA_VTTK_VT14_STR-TPBEZ sy-vline 
WA_VTTK_VT14_STR-STDIS sy-vline 
WA_VTTK_VT14_STR-DTDIS sy-vline 
WA_VTTK_VT14_STR-STLBG sy-vline 
WA_VTTK_VT14_STR-DPLBG sy-vline 
WA_VTTK_VT14_STR-DALBG sy-vline 
WA_VTTK_VT14_STR-STLAD sy-vline 
WA_VTTK_VT14_STR-DPLEN sy-vline 
WA_VTTK_VT14_STR-DALEN sy-vline 
WA_VTTK_VT14_STR-STABF sy-vline 
WA_VTTK_VT14_STR-DTABF sy-vline 
WA_VTTK_VT14_STR-STTBG sy-vline 
WA_VTTK_VT14_STR-DPTBG sy-vline 
WA_VTTK_VT14_STR-DATBG sy-vline 
WA_VTTK_VT14_STR-STTEN sy-vline 
WA_VTTK_VT14_STR-DPTEN sy-vline 
WA_VTTK_VT14_STR-DATEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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