ABAP Select data from SAP table FIWTFR_S_TAXITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIWTFR_S_TAXITEM
*  INTO TABLE @DATA(IT_FIWTFR_S_TAXITEM2).
*--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_FIWTFR_S_TAXITEM INDEX 1 INTO DATA(WA_FIWTFR_S_TAXITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIWTFR_S_TAXITEM>-MANDT = 1.
<FIWTFR_S_TAXITEM>-COMPANYCODE = 1.
<FIWTFR_S_TAXITEM>-ACCOUNTINGDOCUMENT = 1.
<FIWTFR_S_TAXITEM>-FISCALYEAR = 1.
<FIWTFR_S_TAXITEM>-ACCOUNTINGDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIWTFR_S_TAXITEM-WITHHOLDINGTAXTYPE, sy-vline,
  WA_FIWTFR_S_TAXITEM-STATRYRPTGENTITY, sy-vline,
  WA_FIWTFR_S_TAXITEM-STATRYRPTCATEGORY, sy-vline,
  WA_FIWTFR_S_TAXITEM-STATRYRPTRUNID, sy-vline,
  WA_FIWTFR_S_TAXITEM-WITHHOLDINGTAXCODE, sy-vline,
  WA_FIWTFR_S_TAXITEM-CREDITOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIWTFR_S_TAXITEM 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_FIWTFR_S_TAXITEM 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_FIWTFR_S_TAXITEM INTO WA_FIWTFR_S_TAXITEM.


*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_FIWTFR_S_TAXITEM-ACCOUNTINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIWTFR_S_TAXITEM-ACCOUNTINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit AC152, internal->external for field WHLDGTAXEXMPTAMTINCOCODECRCY
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FIWTFR_S_TAXITEM-WHLDGTAXEXMPTAMTINCOCODECRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIWTFR_S_TAXITEM-WHLDGTAXEXMPTAMTINCOCODECRCY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BPMAP, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_BPMAP_OUTPUT'
  EXPORTING
    input =                      WA_FIWTFR_S_TAXITEM-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIWTFR_S_TAXITEM-BUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CITYCODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIWTFR_S_TAXITEM-CITYCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIWTFR_S_TAXITEM-CITYCODE.
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_FIWTFR_S_TAXITEM_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
WITHHOLDINGTAXTYPE TYPE STRING,
STATRYRPTGENTITY TYPE STRING,
STATRYRPTCATEGORY TYPE STRING,
STATRYRPTRUNID TYPE STRING,
WITHHOLDINGTAXCODE TYPE STRING,
CREDITOR TYPE STRING,
POSTINGDATE TYPE STRING,
REPORTINGDATE TYPE STRING,
REPORTINGCURRENCY TYPE STRING,
WHLDGTAXBASEAMTINCOCODECRCY TYPE STRING,
WHLDGTAXAMTINCOCODECRCY TYPE STRING,
WHLDGTAXEXMPTAMTINCOCODECRCY TYPE STRING,
BUSINESSPARTNER TYPE STRING,
COMPANYCODENAME TYPE STRING,
FULLNAME TYPE STRING,
PHONENUMBER TYPE STRING,
CITYNAME TYPE STRING,
HOUSENUMBER TYPE STRING,
STREETNAME TYPE STRING,
POSTALCODE TYPE STRING,
HOMECITYNAME TYPE STRING,
TAXNUMBER1 TYPE STRING,
TAXNUMBER2 TYPE STRING,
NAME TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
CITYCODE TYPE STRING,
BUILDING TYPE STRING,
CUSTOMERSUPPLIERHOUSENUMBER TYPE STRING,
CUSTOMERSUPPLIERSTREETNAME TYPE STRING,
CUSTOMERSUPPLIERPOSTALCODE TYPE STRING,
CUSTOMERSUPPLIERCITYNAME TYPE STRING,
ADDLCUSTOMERSUPPLIERPOSTALCODE TYPE STRING,
ACCOUNTINGDOCITEMISEXCLUDED TYPE STRING,
ISREVERSED TYPE STRING,
ISREVERSAL TYPE STRING,
BASEAMOUNTAN TYPE STRING,
BASEAMOUNTAR TYPE STRING,
BASEAMOUNTCN TYPE STRING,
BASEAMOUNTCT TYPE STRING,
BASEAMOUNTDA TYPE STRING,
BASEAMOUNTDI TYPE STRING,
BASEAMOUNTHO TYPE STRING,
BASEAMOUNTIR TYPE STRING,
BASEAMOUNTJP TYPE STRING,
BASEAMOUNTRI TYPE STRING,
BASEAMOUNTRS TYPE STRING,
PROFS TYPE STRING,
NUMBEROFBP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIWTFR_S_TAXITEM_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_FIWTFR_S_TAXITEM_STR-MANDT sy-vline 
WA_FIWTFR_S_TAXITEM_STR-COMPANYCODE sy-vline 
WA_FIWTFR_S_TAXITEM_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_FIWTFR_S_TAXITEM_STR-FISCALYEAR sy-vline 
WA_FIWTFR_S_TAXITEM_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_FIWTFR_S_TAXITEM_STR-WITHHOLDINGTAXTYPE sy-vline 
WA_FIWTFR_S_TAXITEM_STR-STATRYRPTGENTITY sy-vline 
WA_FIWTFR_S_TAXITEM_STR-STATRYRPTCATEGORY sy-vline 
WA_FIWTFR_S_TAXITEM_STR-STATRYRPTRUNID sy-vline 
WA_FIWTFR_S_TAXITEM_STR-WITHHOLDINGTAXCODE sy-vline 
WA_FIWTFR_S_TAXITEM_STR-CREDITOR sy-vline 
WA_FIWTFR_S_TAXITEM_STR-POSTINGDATE sy-vline 
WA_FIWTFR_S_TAXITEM_STR-REPORTINGDATE sy-vline 
WA_FIWTFR_S_TAXITEM_STR-REPORTINGCURRENCY sy-vline 
WA_FIWTFR_S_TAXITEM_STR-WHLDGTAXBASEAMTINCOCODECRCY sy-vline 
WA_FIWTFR_S_TAXITEM_STR-WHLDGTAXAMTINCOCODECRCY sy-vline 
WA_FIWTFR_S_TAXITEM_STR-WHLDGTAXEXMPTAMTINCOCODECRCY sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BUSINESSPARTNER sy-vline 
WA_FIWTFR_S_TAXITEM_STR-COMPANYCODENAME sy-vline 
WA_FIWTFR_S_TAXITEM_STR-FULLNAME sy-vline 
WA_FIWTFR_S_TAXITEM_STR-PHONENUMBER sy-vline 
WA_FIWTFR_S_TAXITEM_STR-CITYNAME sy-vline 
WA_FIWTFR_S_TAXITEM_STR-HOUSENUMBER sy-vline 
WA_FIWTFR_S_TAXITEM_STR-STREETNAME sy-vline 
WA_FIWTFR_S_TAXITEM_STR-POSTALCODE sy-vline 
WA_FIWTFR_S_TAXITEM_STR-HOMECITYNAME sy-vline 
WA_FIWTFR_S_TAXITEM_STR-TAXNUMBER1 sy-vline 
WA_FIWTFR_S_TAXITEM_STR-TAXNUMBER2 sy-vline 
WA_FIWTFR_S_TAXITEM_STR-NAME sy-vline 
WA_FIWTFR_S_TAXITEM_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_FIWTFR_S_TAXITEM_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_FIWTFR_S_TAXITEM_STR-CITYCODE sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BUILDING sy-vline 
WA_FIWTFR_S_TAXITEM_STR-CUSTOMERSUPPLIERHOUSENUMBER sy-vline 
WA_FIWTFR_S_TAXITEM_STR-CUSTOMERSUPPLIERSTREETNAME sy-vline 
WA_FIWTFR_S_TAXITEM_STR-CUSTOMERSUPPLIERPOSTALCODE sy-vline 
WA_FIWTFR_S_TAXITEM_STR-CUSTOMERSUPPLIERCITYNAME sy-vline 
WA_FIWTFR_S_TAXITEM_STR-ADDLCUSTOMERSUPPLIERPOSTALCODE sy-vline 
WA_FIWTFR_S_TAXITEM_STR-ACCOUNTINGDOCITEMISEXCLUDED sy-vline 
WA_FIWTFR_S_TAXITEM_STR-ISREVERSED sy-vline 
WA_FIWTFR_S_TAXITEM_STR-ISREVERSAL sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTAN sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTAR sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTCN sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTCT sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTDA sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTDI sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTHO sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTIR sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTJP sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTRI sy-vline 
WA_FIWTFR_S_TAXITEM_STR-BASEAMOUNTRS sy-vline 
WA_FIWTFR_S_TAXITEM_STR-PROFS sy-vline 
WA_FIWTFR_S_TAXITEM_STR-NUMBEROFBP sy-vline      INTO ld_text SEPARATED BY SPACE.

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