ABAP Select data from SAP table VTRKH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTRKH
*  INTO TABLE @DATA(IT_VTRKH2).
*--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_VTRKH INDEX 1 INTO DATA(WA_VTRKH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTRKH>-MANDT = 1.
<VTRKH>-VBTYP = 1.
<VTRKH>-VBELN = 1.
<VTRKH>-XSITD = 1.
<VTRKH>-UEVBTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTRKH-UEVBELN, sy-vline,
  WA_VTRKH-TRACKN, sy-vline,
  WA_VTRKH-SHIPACCT, sy-vline,
  WA_VTRKH-ROUTECODE, sy-vline,
  WA_VTRKH-XSITOUR, sy-vline,
  WA_VTRKH-XSIHUBE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTRKH 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_VTRKH 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_VTRKH INTO WA_VTRKH.


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

*Conversion exit ALPHA, internal->external for field UEVBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VTRKH-UEVBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VTRKH-UEVBELN.
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_VTRKH_STR, 
MANDT TYPE STRING,
VBTYP TYPE STRING,
VBELN TYPE STRING,
XSITD TYPE STRING,
UEVBTYP TYPE STRING,
UEVBELN TYPE STRING,
TRACKN TYPE STRING,
SHIPACCT TYPE STRING,
ROUTECODE TYPE STRING,
XSITOUR TYPE STRING,
XSIHUBE TYPE STRING,
XSIHUBZ TYPE STRING,
XSIHUBA TYPE STRING,
ROUTELDAT TYPE STRING,
XSISRVC TYPE STRING,
PRDCD TYPE STRING,
VLBLFLAG TYPE STRING,
XSIDATERR TYPE STRING,
TRKSTATO TYPE STRING,
TRKSTAT TYPE STRING,
TRKEVENT TYPE STRING,
TRKSTATD TYPE STRING,
TRACKTSTMP TYPE STRING,
TRKDLVTO TYPE STRING,
TRKDLVLOC TYPE STRING,
SIGNATURL TYPE STRING,
REQTSTMP TYPE STRING,
TRACKTZNZONE TYPE STRING,
TRACKNCOUN TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTRKH_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_VTRKH_STR-MANDT sy-vline 
WA_VTRKH_STR-VBTYP sy-vline 
WA_VTRKH_STR-VBELN sy-vline 
WA_VTRKH_STR-XSITD sy-vline 
WA_VTRKH_STR-UEVBTYP sy-vline 
WA_VTRKH_STR-UEVBELN sy-vline 
WA_VTRKH_STR-TRACKN sy-vline 
WA_VTRKH_STR-SHIPACCT sy-vline 
WA_VTRKH_STR-ROUTECODE sy-vline 
WA_VTRKH_STR-XSITOUR sy-vline 
WA_VTRKH_STR-XSIHUBE sy-vline 
WA_VTRKH_STR-XSIHUBZ sy-vline 
WA_VTRKH_STR-XSIHUBA sy-vline 
WA_VTRKH_STR-ROUTELDAT sy-vline 
WA_VTRKH_STR-XSISRVC sy-vline 
WA_VTRKH_STR-PRDCD sy-vline 
WA_VTRKH_STR-VLBLFLAG sy-vline 
WA_VTRKH_STR-XSIDATERR sy-vline 
WA_VTRKH_STR-TRKSTATO sy-vline 
WA_VTRKH_STR-TRKSTAT sy-vline 
WA_VTRKH_STR-TRKEVENT sy-vline 
WA_VTRKH_STR-TRKSTATD sy-vline 
WA_VTRKH_STR-TRACKTSTMP sy-vline 
WA_VTRKH_STR-TRKDLVTO sy-vline 
WA_VTRKH_STR-TRKDLVLOC sy-vline 
WA_VTRKH_STR-SIGNATURL sy-vline 
WA_VTRKH_STR-REQTSTMP sy-vline 
WA_VTRKH_STR-TRACKTZNZONE sy-vline 
WA_VTRKH_STR-TRACKNCOUN sy-vline 
WA_VTRKH_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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