ABAP Select data from SAP table VTVSZZINS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTVSZZINS
*  INTO TABLE @DATA(IT_VTVSZZINS2).
*--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_VTVSZZINS INDEX 1 INTO DATA(WA_VTVSZZINS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTVSZZINS>-SZENARI = 1.
<VTVSZZINS>-MANDT = 1.
<VTVSZZINS>-SZKART = 1.
<VTVSZZINS>-WGKM = 1.
<VTVSZZINS>-DKOND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTVSZZINS-DZINS, sy-vline,
  WA_VTVSZZINS-NTAGE, sy-vline,
  WA_VTVSZZINS-JSTZW, sy-vline,
  WA_VTVSZZINS-JTAGGEN, sy-vline,
  WA_VTVSZZINS-IGKM, sy-vline,
  WA_VTVSZZINS-IFR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTVSZZINS 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_VTVSZZINS 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_VTVSZZINS INTO WA_VTVSZZINS.


*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_VTVSZZINS_STR, 
SZENARI TYPE STRING,
MANDT TYPE STRING,
SZKART TYPE STRING,
WGKM TYPE STRING,
DKOND TYPE STRING,
DZINS TYPE STRING,
NTAGE TYPE STRING,
JSTZW TYPE STRING,
JTAGGEN TYPE STRING,
IGKM TYPE STRING,
IFR TYPE STRING,
IZBAF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTVSZZINS_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_VTVSZZINS_STR-SZENARI sy-vline 
WA_VTVSZZINS_STR-MANDT sy-vline 
WA_VTVSZZINS_STR-SZKART sy-vline 
WA_VTVSZZINS_STR-WGKM sy-vline 
WA_VTVSZZINS_STR-DKOND sy-vline 
WA_VTVSZZINS_STR-DZINS sy-vline 
WA_VTVSZZINS_STR-NTAGE sy-vline 
WA_VTVSZZINS_STR-JSTZW sy-vline 
WA_VTVSZZINS_STR-JTAGGEN sy-vline 
WA_VTVSZZINS_STR-IGKM sy-vline 
WA_VTVSZZINS_STR-IFR sy-vline 
WA_VTVSZZINS_STR-IZBAF sy-vline      INTO ld_text SEPARATED BY SPACE.

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