ABAP Select data from SAP table VTZK01I into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VTZK01I 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 VTZK01I. 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 VTZK01I 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_VTZK01I TYPE STANDARD TABLE OF VTZK01I,
      WA_VTZK01I TYPE VTZK01I,
      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: <VTZK01I> TYPE VTZK01I.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VTZK01I.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VTZK01I
  INTO TABLE IT_VTZK01I.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTZK01I
*  INTO TABLE @DATA(IT_VTZK01I2).
*--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_VTZK01I INDEX 1 INTO DATA(WA_VTZK01I2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VTZK01I ASSIGNING <VTZK01I>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTZK01I>-MANDT = 1.
<VTZK01I>-RANTYP = 1.
<VTZK01I>-SKOART = 1.
<VTZK01I>-XKOARTM = 1.
<VTZK01I>-SBEWART1 = 1.

ENDLOOP.

LOOP AT IT_VTZK01I INTO WA_VTZK01I.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTZK01I-SBEWZITI, sy-vline,
  WA_VTZK01I-SBERFIMA, sy-vline,
  WA_VTZK01I-SDOKU, sy-vline,
  WA_VTZK01I-AUSWAHL, sy-vline,
  WA_VTZK01I-SFLART, sy-vline,
  WA_VTZK01I-XKFLART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTZK01I 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_VTZK01I 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_VTZK01I INTO WA_VTZK01I.


*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_VTZK01I_STR, 
MANDT TYPE STRING,
RANTYP TYPE STRING,
SKOART TYPE STRING,
XKOARTM TYPE STRING,
SBEWART1 TYPE STRING,
SBEWZITI TYPE STRING,
SBERFIMA TYPE STRING,
SDOKU TYPE STRING,
AUSWAHL TYPE STRING,
SFLART TYPE STRING,
XKFLART TYPE STRING,
TFLART TYPE STRING,
XBEWART TYPE STRING,
XKOARTK TYPE STRING,
XKOARTL TYPE STRING,
SKOAREF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTZK01I_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_VTZK01I_STR-MANDT sy-vline 
WA_VTZK01I_STR-RANTYP sy-vline 
WA_VTZK01I_STR-SKOART sy-vline 
WA_VTZK01I_STR-XKOARTM sy-vline 
WA_VTZK01I_STR-SBEWART1 sy-vline 
WA_VTZK01I_STR-SBEWZITI sy-vline 
WA_VTZK01I_STR-SBERFIMA sy-vline 
WA_VTZK01I_STR-SDOKU sy-vline 
WA_VTZK01I_STR-AUSWAHL sy-vline 
WA_VTZK01I_STR-SFLART sy-vline 
WA_VTZK01I_STR-XKFLART sy-vline 
WA_VTZK01I_STR-TFLART sy-vline 
WA_VTZK01I_STR-XBEWART sy-vline 
WA_VTZK01I_STR-XKOARTK sy-vline 
WA_VTZK01I_STR-XKOARTL sy-vline 
WA_VTZK01I_STR-SKOAREF sy-vline      INTO ld_text SEPARATED BY SPACE.

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