ABAP Select data from SAP table VVIVSTI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VVIVSTI
*  INTO TABLE @DATA(IT_VVIVSTI2).
*--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_VVIVSTI INDEX 1 INTO DATA(WA_VVIVSTI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VVIVSTI>-MANDT = 1.
<VVIVSTI>-SBERI = 1.
<VVIVSTI>-BUKRS = 1.
<VVIVSTI>-SINVO = 1.
<VVIVSTI>-YINVO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VVIVSTI-NBUZEI, sy-vline,
  WA_VVIVSTI-LFDNR3, sy-vline,
  WA_VVIVSTI-XBLNR, sy-vline,
  WA_VVIVSTI-BAKHK, sy-vline,
  WA_VVIVSTI-BABVS, sy-vline,
  WA_VVIVSTI-BNAVS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VVIVSTI 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_VVIVSTI 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_VVIVSTI INTO WA_VVIVSTI.


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

*Conversion exit ALPHA, internal->external for field SINVO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVIVSTI-SINVO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVIVSTI-SINVO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YINVO
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_VVIVSTI-YINVO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVIVSTI-YINVO.
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_VVIVSTI_STR, 
MANDT TYPE STRING,
SBERI TYPE STRING,
BUKRS TYPE STRING,
SINVO TYPE STRING,
YINVO TYPE STRING,
NBUZEI TYPE STRING,
LFDNR3 TYPE STRING,
XBLNR TYPE STRING,
BAKHK TYPE STRING,
BABVS TYPE STRING,
BNAVS TYPE STRING,
POPTSATZ TYPE STRING,
PVSTB TYPE STRING,
DATUM TYPE STRING,
JUPDSUM TYPE STRING,
JSBUCH TYPE STRING,
DGPLAB TYPE STRING,
JRBUCH TYPE STRING,
JABUCH TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VVIVSTI_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_VVIVSTI_STR-MANDT sy-vline 
WA_VVIVSTI_STR-SBERI sy-vline 
WA_VVIVSTI_STR-BUKRS sy-vline 
WA_VVIVSTI_STR-SINVO sy-vline 
WA_VVIVSTI_STR-YINVO sy-vline 
WA_VVIVSTI_STR-NBUZEI sy-vline 
WA_VVIVSTI_STR-LFDNR3 sy-vline 
WA_VVIVSTI_STR-XBLNR sy-vline 
WA_VVIVSTI_STR-BAKHK sy-vline 
WA_VVIVSTI_STR-BABVS sy-vline 
WA_VVIVSTI_STR-BNAVS sy-vline 
WA_VVIVSTI_STR-POPTSATZ sy-vline 
WA_VVIVSTI_STR-PVSTB sy-vline 
WA_VVIVSTI_STR-DATUM sy-vline 
WA_VVIVSTI_STR-JUPDSUM sy-vline 
WA_VVIVSTI_STR-JSBUCH sy-vline 
WA_VVIVSTI_STR-DGPLAB sy-vline 
WA_VVIVSTI_STR-JRBUCH sy-vline 
WA_VVIVSTI_STR-JABUCH sy-vline 
WA_VVIVSTI_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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