ABAP Select data from SAP table VIRAINV_TAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIRAINV_TAB
*  INTO TABLE @DATA(IT_VIRAINV_TAB2).
*--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_VIRAINV_TAB INDEX 1 INTO DATA(WA_VIRAINV_TAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIRAINV_TAB>-PROCESSGUID = 1.
<VIRAINV_TAB>-PARTNER = 1.
<VIRAINV_TAB>-ADDRTYPE = 1.
<VIRAINV_TAB>-ROLE = 1.
<VIRAINV_TAB>-ITEMSELIND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIRAINV_TAB-DUEDATEFROM, sy-vline,
  WA_VIRAINV_TAB-DUEDATETO, sy-vline,
  WA_VIRAINV_TAB-INCLCLEAREDITEMS, sy-vline,
  WA_VIRAINV_TAB-CLEARCREDITITEMS, sy-vline,
  WA_VIRAINV_TAB-ALLOPENITEMS, sy-vline,
  WA_VIRAINV_TAB-COLLECTIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIRAINV_TAB 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_VIRAINV_TAB 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_VIRAINV_TAB INTO WA_VIRAINV_TAB.


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

*Conversion exit REDAT, internal->external for field DUEDATETO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_VIRAINV_TAB-DUEDATETO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIRAINV_TAB-DUEDATETO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIRAINV_TAB-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIRAINV_TAB-CUSTOMER.
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_VIRAINV_TAB_STR, 
PROCESSGUID TYPE STRING,
PARTNER TYPE STRING,
ADDRTYPE TYPE STRING,
ROLE TYPE STRING,
ITEMSELIND TYPE STRING,
DUEDATEFROM TYPE STRING,
DUEDATETO TYPE STRING,
INCLCLEAREDITEMS TYPE STRING,
CLEARCREDITITEMS TYPE STRING,
ALLOPENITEMS TYPE STRING,
COLLECTIND TYPE STRING,
SELECTPROCESSID TYPE STRING,
CUSTOMER TYPE STRING,
OBJNR TYPE STRING,
OBJCOUNT TYPE STRING,
ISCREDITMEMO TYPE STRING,
ISMINORAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
TOTALGROSSAMOUNT TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
TOTALTAXAMOUNT TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
CANCELED TYPE STRING,
SFDOCGUID TYPE STRING,
PRINTEDON TYPE STRING,
PRINTEDBY TYPE STRING,
RSGUID TYPE STRING,
RSCOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIRAINV_TAB_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_VIRAINV_TAB_STR-PROCESSGUID sy-vline 
WA_VIRAINV_TAB_STR-PARTNER sy-vline 
WA_VIRAINV_TAB_STR-ADDRTYPE sy-vline 
WA_VIRAINV_TAB_STR-ROLE sy-vline 
WA_VIRAINV_TAB_STR-ITEMSELIND sy-vline 
WA_VIRAINV_TAB_STR-DUEDATEFROM sy-vline 
WA_VIRAINV_TAB_STR-DUEDATETO sy-vline 
WA_VIRAINV_TAB_STR-INCLCLEAREDITEMS sy-vline 
WA_VIRAINV_TAB_STR-CLEARCREDITITEMS sy-vline 
WA_VIRAINV_TAB_STR-ALLOPENITEMS sy-vline 
WA_VIRAINV_TAB_STR-COLLECTIND sy-vline 
WA_VIRAINV_TAB_STR-SELECTPROCESSID sy-vline 
WA_VIRAINV_TAB_STR-CUSTOMER sy-vline 
WA_VIRAINV_TAB_STR-OBJNR sy-vline 
WA_VIRAINV_TAB_STR-OBJCOUNT sy-vline 
WA_VIRAINV_TAB_STR-ISCREDITMEMO sy-vline 
WA_VIRAINV_TAB_STR-ISMINORAMOUNT sy-vline 
WA_VIRAINV_TAB_STR-CURRENCY sy-vline 
WA_VIRAINV_TAB_STR-TOTALGROSSAMOUNT sy-vline 
WA_VIRAINV_TAB_STR-TOTALNETAMOUNT sy-vline 
WA_VIRAINV_TAB_STR-TOTALTAXAMOUNT sy-vline 
WA_VIRAINV_TAB_STR-RERF sy-vline 
WA_VIRAINV_TAB_STR-DERF sy-vline 
WA_VIRAINV_TAB_STR-TERF sy-vline 
WA_VIRAINV_TAB_STR-REHER sy-vline 
WA_VIRAINV_TAB_STR-RBEAR sy-vline 
WA_VIRAINV_TAB_STR-DBEAR sy-vline 
WA_VIRAINV_TAB_STR-TBEAR sy-vline 
WA_VIRAINV_TAB_STR-RBHER sy-vline 
WA_VIRAINV_TAB_STR-CANCELED sy-vline 
WA_VIRAINV_TAB_STR-SFDOCGUID sy-vline 
WA_VIRAINV_TAB_STR-PRINTEDON sy-vline 
WA_VIRAINV_TAB_STR-PRINTEDBY sy-vline 
WA_VIRAINV_TAB_STR-RSGUID sy-vline 
WA_VIRAINV_TAB_STR-RSCOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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