ABAP Select data from SAP table VIRAINVITEM 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 VIRAINVITEM 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 VIRAINVITEM. 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 VIRAINVITEM 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_VIRAINVITEM TYPE STANDARD TABLE OF VIRAINVITEM,
      WA_VIRAINVITEM TYPE VIRAINVITEM,
      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: <VIRAINVITEM> TYPE VIRAINVITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIRAINVITEM
*  INTO TABLE @DATA(IT_VIRAINVITEM2).
*--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_VIRAINVITEM INDEX 1 INTO DATA(WA_VIRAINVITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIRAINVITEM>-MANDT = 1.
<VIRAINVITEM>-INVGUID = 1.
<VIRAINVITEM>-ITEMNO = 1.
<VIRAINVITEM>-OBJNR = 1.
<VIRAINVITEM>-OBJNRCALC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIRAINVITEM-ITEMSRCIND, sy-vline,
  WA_VIRAINVITEM-CONDTYPE, sy-vline,
  WA_VIRAINVITEM-FLOWTYPE, sy-vline,
  WA_VIRAINVITEM-BLINEDATE, sy-vline,
  WA_VIRAINVITEM-CALCFROM, sy-vline,
  WA_VIRAINVITEM-CALCTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIRAINVITEM 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_VIRAINVITEM 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_VIRAINVITEM INTO WA_VIRAINVITEM.


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

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

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

*Conversion exit EXCRT, internal->external for field CTRATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_VIRAINVITEM-CTRATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIRAINVITEM-CTRATE.
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_VIRAINVITEM_STR, 
MANDT TYPE STRING,
INVGUID TYPE STRING,
ITEMNO TYPE STRING,
OBJNR TYPE STRING,
OBJNRCALC TYPE STRING,
ITEMSRCIND TYPE STRING,
CONDTYPE TYPE STRING,
FLOWTYPE TYPE STRING,
BLINEDATE TYPE STRING,
CALCFROM TYPE STRING,
CALCTO TYPE STRING,
ISADVANCEPAYMENT TYPE STRING,
CURRENCY TYPE STRING,
GROSSAMOUNT TYPE STRING,
NETAMOUNT TYPE STRING,
TAXAMOUNT TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
PYMTMETH TYPE STRING,
PYMTTERM TYPE STRING,
XMACCTSHEETITEM TYPE STRING,
DOCITEMID TYPE STRING,
REFDOCID TYPE STRING,
REFITEMNO TYPE STRING,
LOGSYSTEM TYPE STRING,
OBJ_TYPE TYPE STRING,
OBJ_KEY TYPE STRING,
PSTNGDATE TYPE STRING,
DOCDATE TYPE STRING,
CLEARINGDATE TYPE STRING,
CLEARINGSTATUS TYPE STRING,
PROCESSID TYPE STRING,
PSTNGPROCEDURE TYPE STRING,
XMACCTSHEETHDR TYPE STRING,
TAXRATE TYPE STRING,
TAXDATE TYPE STRING,
TXJCD TYPE STRING,
HOUSEBKID TYPE STRING,
HOUSEBKACC TYPE STRING,
BANKDETAILID TYPE STRING,
FCCURRKEY TYPE STRING,
FCGROSSAMOUNT TYPE STRING,
FCNETAMOUNT TYPE STRING,
FCTAXAMOUNT TYPE STRING,
CTRULE TYPE STRING,
CTRATE TYPE STRING,
CTDATEREQ TYPE STRING,
CTDATEACT TYPE STRING,
POSTCDCURR TYPE STRING,
TCCURRKEY TYPE STRING,
TCGROSSAMOUNT TYPE STRING,
TCNETAMOUNT TYPE STRING,
TCTAXAMOUNT TYPE STRING,
SEPAMNDID TYPE STRING,
SEPARECCRDID TYPE STRING,
RSGUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIRAINVITEM_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_VIRAINVITEM_STR-MANDT sy-vline 
WA_VIRAINVITEM_STR-INVGUID sy-vline 
WA_VIRAINVITEM_STR-ITEMNO sy-vline 
WA_VIRAINVITEM_STR-OBJNR sy-vline 
WA_VIRAINVITEM_STR-OBJNRCALC sy-vline 
WA_VIRAINVITEM_STR-ITEMSRCIND sy-vline 
WA_VIRAINVITEM_STR-CONDTYPE sy-vline 
WA_VIRAINVITEM_STR-FLOWTYPE sy-vline 
WA_VIRAINVITEM_STR-BLINEDATE sy-vline 
WA_VIRAINVITEM_STR-CALCFROM sy-vline 
WA_VIRAINVITEM_STR-CALCTO sy-vline 
WA_VIRAINVITEM_STR-ISADVANCEPAYMENT sy-vline 
WA_VIRAINVITEM_STR-CURRENCY sy-vline 
WA_VIRAINVITEM_STR-GROSSAMOUNT sy-vline 
WA_VIRAINVITEM_STR-NETAMOUNT sy-vline 
WA_VIRAINVITEM_STR-TAXAMOUNT sy-vline 
WA_VIRAINVITEM_STR-TAXTYPE sy-vline 
WA_VIRAINVITEM_STR-TAXGROUP sy-vline 
WA_VIRAINVITEM_STR-PYMTMETH sy-vline 
WA_VIRAINVITEM_STR-PYMTTERM sy-vline 
WA_VIRAINVITEM_STR-XMACCTSHEETITEM sy-vline 
WA_VIRAINVITEM_STR-DOCITEMID sy-vline 
WA_VIRAINVITEM_STR-REFDOCID sy-vline 
WA_VIRAINVITEM_STR-REFITEMNO sy-vline 
WA_VIRAINVITEM_STR-LOGSYSTEM sy-vline 
WA_VIRAINVITEM_STR-OBJ_TYPE sy-vline 
WA_VIRAINVITEM_STR-OBJ_KEY sy-vline 
WA_VIRAINVITEM_STR-PSTNGDATE sy-vline 
WA_VIRAINVITEM_STR-DOCDATE sy-vline 
WA_VIRAINVITEM_STR-CLEARINGDATE sy-vline 
WA_VIRAINVITEM_STR-CLEARINGSTATUS sy-vline 
WA_VIRAINVITEM_STR-PROCESSID sy-vline 
WA_VIRAINVITEM_STR-PSTNGPROCEDURE sy-vline 
WA_VIRAINVITEM_STR-XMACCTSHEETHDR sy-vline 
WA_VIRAINVITEM_STR-TAXRATE sy-vline 
WA_VIRAINVITEM_STR-TAXDATE sy-vline 
WA_VIRAINVITEM_STR-TXJCD sy-vline 
WA_VIRAINVITEM_STR-HOUSEBKID sy-vline 
WA_VIRAINVITEM_STR-HOUSEBKACC sy-vline 
WA_VIRAINVITEM_STR-BANKDETAILID sy-vline 
WA_VIRAINVITEM_STR-FCCURRKEY sy-vline 
WA_VIRAINVITEM_STR-FCGROSSAMOUNT sy-vline 
WA_VIRAINVITEM_STR-FCNETAMOUNT sy-vline 
WA_VIRAINVITEM_STR-FCTAXAMOUNT sy-vline 
WA_VIRAINVITEM_STR-CTRULE sy-vline 
WA_VIRAINVITEM_STR-CTRATE sy-vline 
WA_VIRAINVITEM_STR-CTDATEREQ sy-vline 
WA_VIRAINVITEM_STR-CTDATEACT sy-vline 
WA_VIRAINVITEM_STR-POSTCDCURR sy-vline 
WA_VIRAINVITEM_STR-TCCURRKEY sy-vline 
WA_VIRAINVITEM_STR-TCGROSSAMOUNT sy-vline 
WA_VIRAINVITEM_STR-TCNETAMOUNT sy-vline 
WA_VIRAINVITEM_STR-TCTAXAMOUNT sy-vline 
WA_VIRAINVITEM_STR-SEPAMNDID sy-vline 
WA_VIRAINVITEM_STR-SEPARECCRDID sy-vline 
WA_VIRAINVITEM_STR-RSGUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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