ABAP Select data from SAP table IARFRGNSERVITEM into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IARFRGNSERVITEM 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 IARFRGNSERVITEM. 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 IARFRGNSERVITEM 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_IARFRGNSERVITEM TYPE STANDARD TABLE OF IARFRGNSERVITEM,
      WA_IARFRGNSERVITEM TYPE IARFRGNSERVITEM,
      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: <IARFRGNSERVITEM> TYPE IARFRGNSERVITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IARFRGNSERVITEM
*  INTO TABLE @DATA(IT_IARFRGNSERVITEM2).
*--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_IARFRGNSERVITEM INDEX 1 INTO DATA(WA_IARFRGNSERVITEM2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IARFRGNSERVITEM-TAXCODE, sy-vline,
  WA_IARFRGNSERVITEM-TRANSACTIONTYPEDETERMINATION, sy-vline,
  WA_IARFRGNSERVITEM-STRPTAXCLASSIFICATION, sy-vline,
  WA_IARFRGNSERVITEM-DOCUMENTCURRENCY, sy-vline,
  WA_IARFRGNSERVITEM-COMPANYCODECURRENCY, sy-vline,
  WA_IARFRGNSERVITEM-POSTINGDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IARFRGNSERVITEM 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_IARFRGNSERVITEM 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_IARFRGNSERVITEM INTO WA_IARFRGNSERVITEM.


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

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

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

*Conversion exit AU132, internal->external for field TAXAMOUNTINADDITIONALCURRENCY1
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IARFRGNSERVITEM-TAXAMOUNTINADDITIONALCURRENCY1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IARFRGNSERVITEM-TAXAMOUNTINADDITIONALCURRENCY1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field TAXAMOUNTINADDITIONALCURRENCY2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IARFRGNSERVITEM-TAXAMOUNTINADDITIONALCURRENCY2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IARFRGNSERVITEM-TAXAMOUNTINADDITIONALCURRENCY2.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit AC152, internal->external for field TAXBASEAMTINADDITIONALCRCY1
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IARFRGNSERVITEM-TAXBASEAMTINADDITIONALCRCY1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IARFRGNSERVITEM-TAXBASEAMTINADDITIONALCRCY1.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit EXCRT, internal->external for field EXCHANGERATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_IARFRGNSERVITEM-EXCHANGERATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IARFRGNSERVITEM-EXCHANGERATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field TAXBASEAMOUNTINCOUNTRYCRCY
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IARFRGNSERVITEM-TAXBASEAMOUNTINCOUNTRYCRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IARFRGNSERVITEM-TAXBASEAMOUNTINCOUNTRYCRCY.
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_IARFRGNSERVITEM_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
TAXCODE TYPE STRING,
TRANSACTIONTYPEDETERMINATION TYPE STRING,
STRPTAXCLASSIFICATION TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
POSTINGDATE TYPE STRING,
REPORTINGDATE TYPE STRING,
TAXAMOUNT TYPE STRING,
TAXAMOUNTINADDITIONALCURRENCY1 TYPE STRING,
TAXAMOUNTINADDITIONALCURRENCY2 TYPE STRING,
TAXAMOUNTINCOUNTRYCRCY TYPE STRING,
TAXAMOUNTINRPTGCRCY TYPE STRING,
TAXBASEAMOUNTINRPTGCRCY TYPE STRING,
TAXBASEAMOUNTINTRANSCRCY TYPE STRING,
TAXBASEAMTINADDITIONALCRCY1 TYPE STRING,
ISRESPFORIMPORTDECLARATION TYPE STRING,
TAXNUMBERTYPE TYPE STRING,
BUSINESSPARTNERCOUNTRY TYPE STRING,
COUNTRYFREETEXT TYPE STRING,
NMBROFVATRATES TYPE STRING,
AR_OFFICIALDOCUMENTTYPE TYPE STRING,
HIERARCHYNODETEXT TYPE STRING,
ISVALID TYPE STRING,
ITEMISACTIVATED TYPE STRING,
AMOUNTINCOMPANYCODECURRENCY TYPE STRING,
PURCHASEIMPORTFORM TYPE STRING,
CLEARINGACCOUNTINGDOCUMENT TYPE STRING,
GLACCOUNT TYPE STRING,
TAXEXEMPTIONAMOUNT TYPE STRING,
DOCUMENTTYPECATEGORY TYPE STRING,
ACCOUNTINGDOCUMENTTYPENAME TYPE STRING,
AR_OFFICIALDOCUMENTNUMBER TYPE STRING,
DOCUMENTDATE TYPE STRING,
ALTERNATIVECURRENCYKEY TYPE STRING,
EXCHANGERATE TYPE STRING,
AR_CUIT TYPE STRING,
TAXNUMBER1 TYPE STRING,
BUSINESSPARTNERNAME TYPE STRING,
AR_VATRATECODE TYPE STRING,
TAXREPORTINGDATE TYPE STRING,
DOCUMENTREFERENCEID TYPE STRING,
AR_PRINTCHARACTER TYPE STRING,
TAXBASEAMOUNTINCOUNTRYCRCY TYPE STRING,
TAXBASEAMOUNTINCOCODECRCY TYPE STRING,
GLBUSINESSTRANSACTIONTYPE TYPE STRING,
RESPONSIBLETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IARFRGNSERVITEM_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_IARFRGNSERVITEM_STR-MANDT sy-vline 
WA_IARFRGNSERVITEM_STR-COMPANYCODE sy-vline 
WA_IARFRGNSERVITEM_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_IARFRGNSERVITEM_STR-FISCALYEAR sy-vline 
WA_IARFRGNSERVITEM_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_IARFRGNSERVITEM_STR-TAXCODE sy-vline 
WA_IARFRGNSERVITEM_STR-TRANSACTIONTYPEDETERMINATION sy-vline 
WA_IARFRGNSERVITEM_STR-STRPTAXCLASSIFICATION sy-vline 
WA_IARFRGNSERVITEM_STR-DOCUMENTCURRENCY sy-vline 
WA_IARFRGNSERVITEM_STR-COMPANYCODECURRENCY sy-vline 
WA_IARFRGNSERVITEM_STR-POSTINGDATE sy-vline 
WA_IARFRGNSERVITEM_STR-REPORTINGDATE sy-vline 
WA_IARFRGNSERVITEM_STR-TAXAMOUNT sy-vline 
WA_IARFRGNSERVITEM_STR-TAXAMOUNTINADDITIONALCURRENCY1 sy-vline 
WA_IARFRGNSERVITEM_STR-TAXAMOUNTINADDITIONALCURRENCY2 sy-vline 
WA_IARFRGNSERVITEM_STR-TAXAMOUNTINCOUNTRYCRCY sy-vline 
WA_IARFRGNSERVITEM_STR-TAXAMOUNTINRPTGCRCY sy-vline 
WA_IARFRGNSERVITEM_STR-TAXBASEAMOUNTINRPTGCRCY sy-vline 
WA_IARFRGNSERVITEM_STR-TAXBASEAMOUNTINTRANSCRCY sy-vline 
WA_IARFRGNSERVITEM_STR-TAXBASEAMTINADDITIONALCRCY1 sy-vline 
WA_IARFRGNSERVITEM_STR-ISRESPFORIMPORTDECLARATION sy-vline 
WA_IARFRGNSERVITEM_STR-TAXNUMBERTYPE sy-vline 
WA_IARFRGNSERVITEM_STR-BUSINESSPARTNERCOUNTRY sy-vline 
WA_IARFRGNSERVITEM_STR-COUNTRYFREETEXT sy-vline 
WA_IARFRGNSERVITEM_STR-NMBROFVATRATES sy-vline 
WA_IARFRGNSERVITEM_STR-AR_OFFICIALDOCUMENTTYPE sy-vline 
WA_IARFRGNSERVITEM_STR-HIERARCHYNODETEXT sy-vline 
WA_IARFRGNSERVITEM_STR-ISVALID sy-vline 
WA_IARFRGNSERVITEM_STR-ITEMISACTIVATED sy-vline 
WA_IARFRGNSERVITEM_STR-AMOUNTINCOMPANYCODECURRENCY sy-vline 
WA_IARFRGNSERVITEM_STR-PURCHASEIMPORTFORM sy-vline 
WA_IARFRGNSERVITEM_STR-CLEARINGACCOUNTINGDOCUMENT sy-vline 
WA_IARFRGNSERVITEM_STR-GLACCOUNT sy-vline 
WA_IARFRGNSERVITEM_STR-TAXEXEMPTIONAMOUNT sy-vline 
WA_IARFRGNSERVITEM_STR-DOCUMENTTYPECATEGORY sy-vline 
WA_IARFRGNSERVITEM_STR-ACCOUNTINGDOCUMENTTYPENAME sy-vline 
WA_IARFRGNSERVITEM_STR-AR_OFFICIALDOCUMENTNUMBER sy-vline 
WA_IARFRGNSERVITEM_STR-DOCUMENTDATE sy-vline 
WA_IARFRGNSERVITEM_STR-ALTERNATIVECURRENCYKEY sy-vline 
WA_IARFRGNSERVITEM_STR-EXCHANGERATE sy-vline 
WA_IARFRGNSERVITEM_STR-AR_CUIT sy-vline 
WA_IARFRGNSERVITEM_STR-TAXNUMBER1 sy-vline 
WA_IARFRGNSERVITEM_STR-BUSINESSPARTNERNAME sy-vline 
WA_IARFRGNSERVITEM_STR-AR_VATRATECODE sy-vline 
WA_IARFRGNSERVITEM_STR-TAXREPORTINGDATE sy-vline 
WA_IARFRGNSERVITEM_STR-DOCUMENTREFERENCEID sy-vline 
WA_IARFRGNSERVITEM_STR-AR_PRINTCHARACTER sy-vline 
WA_IARFRGNSERVITEM_STR-TAXBASEAMOUNTINCOUNTRYCRCY sy-vline 
WA_IARFRGNSERVITEM_STR-TAXBASEAMOUNTINCOCODECRCY sy-vline 
WA_IARFRGNSERVITEM_STR-GLBUSINESSTRANSACTIONTYPE sy-vline 
WA_IARFRGNSERVITEM_STR-RESPONSIBLETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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