ABAP Select data from SAP table FISKVATC_ITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FISKVATC_ITM
*  INTO TABLE @DATA(IT_FISKVATC_ITM2).
*--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_FISKVATC_ITM INDEX 1 INTO DATA(WA_FISKVATC_ITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FISKVATC_ITM>-MANDT = 1.
<FISKVATC_ITM>-STATRYRPTGENTITY = 1.
<FISKVATC_ITM>-STATRYRPTCATEGORY = 1.
<FISKVATC_ITM>-STATRYRPTRUNID = 1.
<FISKVATC_ITM>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FISKVATC_ITM-ACCOUNTINGDOCUMENT, sy-vline,
  WA_FISKVATC_ITM-FISCALYEAR, sy-vline,
  WA_FISKVATC_ITM-TAXITEM, sy-vline,
  WA_FISKVATC_ITM-BILLINGDOCUMENTITEM, sy-vline,
  WA_FISKVATC_ITM-TAXGROUP, sy-vline,
  WA_FISKVATC_ITM-VATREGISTRATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FISKVATC_ITM 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_FISKVATC_ITM 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_FISKVATC_ITM INTO WA_FISKVATC_ITM.


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

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

*Conversion exit AC172, internal->external for field TAXBASEAMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_FISKVATC_ITM-TAXBASEAMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISKVATC_ITM-TAXBASEAMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field TAXAMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_FISKVATC_ITM-TAXAMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISKVATC_ITM-TAXAMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DEDUCTTAXAMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FISKVATC_ITM-DEDUCTTAXAMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISKVATC_ITM-DEDUCTTAXAMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FISKVATC_ITM-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISKVATC_ITM-BASEUNIT.
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_FISKVATC_ITM_STR, 
MANDT TYPE STRING,
STATRYRPTGENTITY TYPE STRING,
STATRYRPTCATEGORY TYPE STRING,
STATRYRPTRUNID TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
TAXITEM TYPE STRING,
BILLINGDOCUMENTITEM TYPE STRING,
TAXGROUP TYPE STRING,
VATREGISTRATION TYPE STRING,
INVOICENUMBER TYPE STRING,
REFERENCEINVOICENUMBER TYPE STRING,
TAXREPORTINGDATE TYPE STRING,
TAXRATE TYPE STRING,
TAXBASEAMOUNT TYPE STRING,
TAXAMOUNT TYPE STRING,
DEDUCTTAXAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
CONTROLCODE TYPE STRING,
BILLINGQUANTITY TYPE STRING,
BASEUNIT TYPE STRING,
BADDEBTRELIEF TYPE STRING,
DOWNPAYMENTSTATUS TYPE STRING,
XREVERSING TYPE STRING,
XREVERSED TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FISKVATC_ITM_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_FISKVATC_ITM_STR-MANDT sy-vline 
WA_FISKVATC_ITM_STR-STATRYRPTGENTITY sy-vline 
WA_FISKVATC_ITM_STR-STATRYRPTCATEGORY sy-vline 
WA_FISKVATC_ITM_STR-STATRYRPTRUNID sy-vline 
WA_FISKVATC_ITM_STR-COMPANYCODE sy-vline 
WA_FISKVATC_ITM_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_FISKVATC_ITM_STR-FISCALYEAR sy-vline 
WA_FISKVATC_ITM_STR-TAXITEM sy-vline 
WA_FISKVATC_ITM_STR-BILLINGDOCUMENTITEM sy-vline 
WA_FISKVATC_ITM_STR-TAXGROUP sy-vline 
WA_FISKVATC_ITM_STR-VATREGISTRATION sy-vline 
WA_FISKVATC_ITM_STR-INVOICENUMBER sy-vline 
WA_FISKVATC_ITM_STR-REFERENCEINVOICENUMBER sy-vline 
WA_FISKVATC_ITM_STR-TAXREPORTINGDATE sy-vline 
WA_FISKVATC_ITM_STR-TAXRATE sy-vline 
WA_FISKVATC_ITM_STR-TAXBASEAMOUNT sy-vline 
WA_FISKVATC_ITM_STR-TAXAMOUNT sy-vline 
WA_FISKVATC_ITM_STR-DEDUCTTAXAMOUNT sy-vline 
WA_FISKVATC_ITM_STR-CURRENCY sy-vline 
WA_FISKVATC_ITM_STR-CONTROLCODE sy-vline 
WA_FISKVATC_ITM_STR-BILLINGQUANTITY sy-vline 
WA_FISKVATC_ITM_STR-BASEUNIT sy-vline 
WA_FISKVATC_ITM_STR-BADDEBTRELIEF sy-vline 
WA_FISKVATC_ITM_STR-DOWNPAYMENTSTATUS sy-vline 
WA_FISKVATC_ITM_STR-XREVERSING sy-vline 
WA_FISKVATC_ITM_STR-XREVERSED sy-vline 
WA_FISKVATC_ITM_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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