ABAP Select data from SAP table AVMSVINVOICE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVMSVINVOICE
*  INTO TABLE @DATA(IT_AVMSVINVOICE2).
*--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_AVMSVINVOICE INDEX 1 INTO DATA(WA_AVMSVINVOICE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVMSVINVOICE>-MANDT = 1.
<AVMSVINVOICE>-VMSVEHICLEUUID = 1.
<AVMSVINVOICE>-VMSVEHICLEACTIONDATETIME = 1.
<AVMSVINVOICE>-VMSVEHICLEACTIONDOCTYPE = 1.
<AVMSVINVOICE>-REFACCOUNTINGDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVMSVINVOICE-DOCUMENTREFERENCEID, sy-vline,
  WA_AVMSVINVOICE-INPUTFISCALYEAR, sy-vline,
  WA_AVMSVINVOICE-SUPPLIERINVOICEITEM, sy-vline,
  WA_AVMSVINVOICE-SUPLRINVCEXTCREATEDBYUSER, sy-vline,
  WA_AVMSVINVOICE-VEHACTIONDOCTYPEISREVERSED, sy-vline,
  WA_AVMSVINVOICE-DOCUMENTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVMSVINVOICE 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_AVMSVINVOICE 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_AVMSVINVOICE INTO WA_AVMSVINVOICE.


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

*Conversion exit GJAHR, internal->external for field INPUTFISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_AVMSVINVOICE-INPUTFISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVMSVINVOICE-INPUTFISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LOGICALSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AVMSVINVOICE-LOGICALSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVMSVINVOICE-LOGICALSYSTEM.
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_AVMSVINVOICE_STR, 
MANDT TYPE STRING,
VMSVEHICLEUUID TYPE STRING,
VMSVEHICLEACTIONDATETIME TYPE STRING,
VMSVEHICLEACTIONDOCTYPE TYPE STRING,
REFACCOUNTINGDOCUMENT TYPE STRING,
DOCUMENTREFERENCEID TYPE STRING,
INPUTFISCALYEAR TYPE STRING,
SUPPLIERINVOICEITEM TYPE STRING,
SUPLRINVCEXTCREATEDBYUSER TYPE STRING,
VEHACTIONDOCTYPEISREVERSED TYPE STRING,
DOCUMENTDATE TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
SUPPLIERINVOICEISCANCELLED TYPE STRING,
REVERSEDOCUMENT TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
SUPPLIERINVOICEITEMAMOUNT TYPE STRING,
INVOICINGPARTY TYPE STRING,
ISENDOFPURPOSEBLOCKED TYPE STRING,
LOGICALSYSTEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVMSVINVOICE_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_AVMSVINVOICE_STR-MANDT sy-vline 
WA_AVMSVINVOICE_STR-VMSVEHICLEUUID sy-vline 
WA_AVMSVINVOICE_STR-VMSVEHICLEACTIONDATETIME sy-vline 
WA_AVMSVINVOICE_STR-VMSVEHICLEACTIONDOCTYPE sy-vline 
WA_AVMSVINVOICE_STR-REFACCOUNTINGDOCUMENT sy-vline 
WA_AVMSVINVOICE_STR-DOCUMENTREFERENCEID sy-vline 
WA_AVMSVINVOICE_STR-INPUTFISCALYEAR sy-vline 
WA_AVMSVINVOICE_STR-SUPPLIERINVOICEITEM sy-vline 
WA_AVMSVINVOICE_STR-SUPLRINVCEXTCREATEDBYUSER sy-vline 
WA_AVMSVINVOICE_STR-VEHACTIONDOCTYPEISREVERSED sy-vline 
WA_AVMSVINVOICE_STR-DOCUMENTDATE sy-vline 
WA_AVMSVINVOICE_STR-COMPANYCODE sy-vline 
WA_AVMSVINVOICE_STR-COMPANYCODENAME sy-vline 
WA_AVMSVINVOICE_STR-SUPPLIERINVOICEISCANCELLED sy-vline 
WA_AVMSVINVOICE_STR-REVERSEDOCUMENT sy-vline 
WA_AVMSVINVOICE_STR-POSTINGDATE sy-vline 
WA_AVMSVINVOICE_STR-DOCUMENTCURRENCY sy-vline 
WA_AVMSVINVOICE_STR-SUPPLIERINVOICEITEMAMOUNT sy-vline 
WA_AVMSVINVOICE_STR-INVOICINGPARTY sy-vline 
WA_AVMSVINVOICE_STR-ISENDOFPURPOSEBLOCKED sy-vline 
WA_AVMSVINVOICE_STR-LOGICALSYSTEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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