ABAP Select data from SAP table CFIN_AVSI_DOCE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CFIN_AVSI_DOCE
*  INTO TABLE @DATA(IT_CFIN_AVSI_DOCE2).
*--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_CFIN_AVSI_DOCE INDEX 1 INTO DATA(WA_CFIN_AVSI_DOCE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CFIN_AVSI_DOCE>-MANDT = 1.
<CFIN_AVSI_DOCE>-AV_DBKEY = 1.
<CFIN_AVSI_DOCE>-SOURCESYSTEMLOGICALSYSTEM = 1.
<CFIN_AVSI_DOCE>-CFINRPLDSUPPLIERINVOICE = 1.
<CFIN_AVSI_DOCE>-FISCALYEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CFIN_AVSI_DOCE-COMPANYCODE, sy-vline,
  WA_CFIN_AVSI_DOCE-DOCUMENTCURRENCY, sy-vline,
  WA_CFIN_AVSI_DOCE-DOCUMENTDATE, sy-vline,
  WA_CFIN_AVSI_DOCE-INVOICEGROSSAMOUNT, sy-vline,
  WA_CFIN_AVSI_DOCE-INVOICINGPARTY, sy-vline,
  WA_CFIN_AVSI_DOCE-POSTINGDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CFIN_AVSI_DOCE 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_CFIN_AVSI_DOCE 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_CFIN_AVSI_DOCE INTO WA_CFIN_AVSI_DOCE.


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

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

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

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

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

*Conversion exit GJAHR, internal->external for field REVERSEDOCUMENTFISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CFIN_AVSI_DOCE-REVERSEDOCUMENTFISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CFIN_AVSI_DOCE-REVERSEDOCUMENTFISCALYEAR.
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_CFIN_AVSI_DOCE_STR, 
MANDT TYPE STRING,
AV_DBKEY TYPE STRING,
SOURCESYSTEMLOGICALSYSTEM TYPE STRING,
CFINRPLDSUPPLIERINVOICE TYPE STRING,
FISCALYEAR TYPE STRING,
COMPANYCODE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
DOCUMENTDATE TYPE STRING,
INVOICEGROSSAMOUNT TYPE STRING,
INVOICINGPARTY TYPE STRING,
POSTINGDATE TYPE STRING,
CREATIONDATE TYPE STRING,
TIMEENTRY TYPE STRING,
SUPPLIERINVOICESTATUS TYPE STRING,
ISINVOICE TYPE STRING,
REVERSEDOCUMENT TYPE STRING,
REVERSEDOCUMENTFISCALYEAR TYPE STRING,
SUPPLIERINVOICEORIGIN TYPE STRING,
SUPLRINVCTRANSACTIONCATEGORY TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
ELECTRONICINVOICEUUID TYPE STRING,
ISDELETED TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
DUMMY_AVSI_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CFIN_AVSI_DOCE_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_CFIN_AVSI_DOCE_STR-MANDT sy-vline 
WA_CFIN_AVSI_DOCE_STR-AV_DBKEY sy-vline 
WA_CFIN_AVSI_DOCE_STR-SOURCESYSTEMLOGICALSYSTEM sy-vline 
WA_CFIN_AVSI_DOCE_STR-CFINRPLDSUPPLIERINVOICE sy-vline 
WA_CFIN_AVSI_DOCE_STR-FISCALYEAR sy-vline 
WA_CFIN_AVSI_DOCE_STR-COMPANYCODE sy-vline 
WA_CFIN_AVSI_DOCE_STR-DOCUMENTCURRENCY sy-vline 
WA_CFIN_AVSI_DOCE_STR-DOCUMENTDATE sy-vline 
WA_CFIN_AVSI_DOCE_STR-INVOICEGROSSAMOUNT sy-vline 
WA_CFIN_AVSI_DOCE_STR-INVOICINGPARTY sy-vline 
WA_CFIN_AVSI_DOCE_STR-POSTINGDATE sy-vline 
WA_CFIN_AVSI_DOCE_STR-CREATIONDATE sy-vline 
WA_CFIN_AVSI_DOCE_STR-TIMEENTRY sy-vline 
WA_CFIN_AVSI_DOCE_STR-SUPPLIERINVOICESTATUS sy-vline 
WA_CFIN_AVSI_DOCE_STR-ISINVOICE sy-vline 
WA_CFIN_AVSI_DOCE_STR-REVERSEDOCUMENT sy-vline 
WA_CFIN_AVSI_DOCE_STR-REVERSEDOCUMENTFISCALYEAR sy-vline 
WA_CFIN_AVSI_DOCE_STR-SUPPLIERINVOICEORIGIN sy-vline 
WA_CFIN_AVSI_DOCE_STR-SUPLRINVCTRANSACTIONCATEGORY sy-vline 
WA_CFIN_AVSI_DOCE_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_CFIN_AVSI_DOCE_STR-ELECTRONICINVOICEUUID sy-vline 
WA_CFIN_AVSI_DOCE_STR-ISDELETED sy-vline 
WA_CFIN_AVSI_DOCE_STR-LASTCHANGEDATETIME sy-vline 
WA_CFIN_AVSI_DOCE_STR-DUMMY_AVSI_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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