ABAP Select data from SAP table PKRVATINVCITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKRVATINVCITEM
*  INTO TABLE @DATA(IT_PKRVATINVCITEM2).
*--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_PKRVATINVCITEM INDEX 1 INTO DATA(WA_PKRVATINVCITEM2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKRVATINVCITEM-STATRYRPTGENTITY, sy-vline,
  WA_PKRVATINVCITEM-STATRYRPTCATEGORY, sy-vline,
  WA_PKRVATINVCITEM-STATRYRPTRUNID, sy-vline,
  WA_PKRVATINVCITEM-TAXCODE, sy-vline,
  WA_PKRVATINVCITEM-TRANSACTIONTYPEDETERMINATION, sy-vline,
  WA_PKRVATINVCITEM-TAXBOX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKRVATINVCITEM 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_PKRVATINVCITEM 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_PKRVATINVCITEM INTO WA_PKRVATINVCITEM.


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

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

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

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

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

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

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

*Conversion exit AU132, internal->external for field TAXAMOUNTINCOCODECRCY
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_PKRVATINVCITEM-TAXAMOUNTINCOCODECRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKRVATINVCITEM-TAXAMOUNTINCOCODECRCY.
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_PKRVATINVCITEM_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
TAXITEM TYPE STRING,
STATRYRPTGENTITY TYPE STRING,
STATRYRPTCATEGORY TYPE STRING,
STATRYRPTRUNID TYPE STRING,
TAXCODE TYPE STRING,
TRANSACTIONTYPEDETERMINATION TYPE STRING,
TAXBOX TYPE STRING,
TAXDECLNAMOUNTTYPE TYPE STRING,
TAXITEMGROUPINGVERSION TYPE STRING,
VALIDFROM TYPE STRING,
TAXRATE TYPE STRING,
TAXRATEVALIDITYSTARTDATE TYPE STRING,
BUSINESSPLACE TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
FINANCIALACCOUNTTYPE TYPE STRING,
CUSTSUPPNUMBER TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
DOCUMENTREFERENCEID TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
REPORTINGDATE TYPE STRING,
TAXREPORTINGDATE TYPE STRING,
VATREGISTRATION TYPE STRING,
TAXNUMBER2 TYPE STRING,
TAXNUMBER1 TYPE STRING,
BUSINESSPARTNER TYPE STRING,
BUSINESSPARTNERNAME TYPE STRING,
TAXINVCNMBRVALIDITYSTARTDATE TYPE STRING,
INDUSTRYTYPE TYPE STRING,
BUSINESSTYPE TYPE STRING,
TAXINVOICEREPRESENTATIVENAME TYPE STRING,
EXPORTERUUID TYPE STRING,
LOADINGDATE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
TAXBASEAMOUNTINTRANSCRCY TYPE STRING,
EXCHANGERATE TYPE STRING,
TAXTYPE TYPE STRING,
TAXBASEAMOUNTINCOCODECRCY TYPE STRING,
TAXAMOUNTINCOCODECRCY TYPE STRING,
TAXINVOICEAPPROVALNMBR TYPE STRING,
INVOICEDATE TYPE STRING,
ISREVERSAL TYPE STRING,
ISREVERSED TYPE STRING,
REVERSALREASON TYPE STRING,
TAXITEMGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKRVATINVCITEM_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_PKRVATINVCITEM_STR-MANDT sy-vline 
WA_PKRVATINVCITEM_STR-COMPANYCODE sy-vline 
WA_PKRVATINVCITEM_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_PKRVATINVCITEM_STR-FISCALYEAR sy-vline 
WA_PKRVATINVCITEM_STR-TAXITEM sy-vline 
WA_PKRVATINVCITEM_STR-STATRYRPTGENTITY sy-vline 
WA_PKRVATINVCITEM_STR-STATRYRPTCATEGORY sy-vline 
WA_PKRVATINVCITEM_STR-STATRYRPTRUNID sy-vline 
WA_PKRVATINVCITEM_STR-TAXCODE sy-vline 
WA_PKRVATINVCITEM_STR-TRANSACTIONTYPEDETERMINATION sy-vline 
WA_PKRVATINVCITEM_STR-TAXBOX sy-vline 
WA_PKRVATINVCITEM_STR-TAXDECLNAMOUNTTYPE sy-vline 
WA_PKRVATINVCITEM_STR-TAXITEMGROUPINGVERSION sy-vline 
WA_PKRVATINVCITEM_STR-VALIDFROM sy-vline 
WA_PKRVATINVCITEM_STR-TAXRATE sy-vline 
WA_PKRVATINVCITEM_STR-TAXRATEVALIDITYSTARTDATE sy-vline 
WA_PKRVATINVCITEM_STR-BUSINESSPLACE sy-vline 
WA_PKRVATINVCITEM_STR-COMPANYCODECURRENCY sy-vline 
WA_PKRVATINVCITEM_STR-FINANCIALACCOUNTTYPE sy-vline 
WA_PKRVATINVCITEM_STR-CUSTSUPPNUMBER sy-vline 
WA_PKRVATINVCITEM_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_PKRVATINVCITEM_STR-DOCUMENTREFERENCEID sy-vline 
WA_PKRVATINVCITEM_STR-POSTINGDATE sy-vline 
WA_PKRVATINVCITEM_STR-DOCUMENTDATE sy-vline 
WA_PKRVATINVCITEM_STR-REPORTINGDATE sy-vline 
WA_PKRVATINVCITEM_STR-TAXREPORTINGDATE sy-vline 
WA_PKRVATINVCITEM_STR-VATREGISTRATION sy-vline 
WA_PKRVATINVCITEM_STR-TAXNUMBER2 sy-vline 
WA_PKRVATINVCITEM_STR-TAXNUMBER1 sy-vline 
WA_PKRVATINVCITEM_STR-BUSINESSPARTNER sy-vline 
WA_PKRVATINVCITEM_STR-BUSINESSPARTNERNAME sy-vline 
WA_PKRVATINVCITEM_STR-TAXINVCNMBRVALIDITYSTARTDATE sy-vline 
WA_PKRVATINVCITEM_STR-INDUSTRYTYPE sy-vline 
WA_PKRVATINVCITEM_STR-BUSINESSTYPE sy-vline 
WA_PKRVATINVCITEM_STR-TAXINVOICEREPRESENTATIVENAME sy-vline 
WA_PKRVATINVCITEM_STR-EXPORTERUUID sy-vline 
WA_PKRVATINVCITEM_STR-LOADINGDATE sy-vline 
WA_PKRVATINVCITEM_STR-DOCUMENTCURRENCY sy-vline 
WA_PKRVATINVCITEM_STR-TAXBASEAMOUNTINTRANSCRCY sy-vline 
WA_PKRVATINVCITEM_STR-EXCHANGERATE sy-vline 
WA_PKRVATINVCITEM_STR-TAXTYPE sy-vline 
WA_PKRVATINVCITEM_STR-TAXBASEAMOUNTINCOCODECRCY sy-vline 
WA_PKRVATINVCITEM_STR-TAXAMOUNTINCOCODECRCY sy-vline 
WA_PKRVATINVCITEM_STR-TAXINVOICEAPPROVALNMBR sy-vline 
WA_PKRVATINVCITEM_STR-INVOICEDATE sy-vline 
WA_PKRVATINVCITEM_STR-ISREVERSAL sy-vline 
WA_PKRVATINVCITEM_STR-ISREVERSED sy-vline 
WA_PKRVATINVCITEM_STR-REVERSALREASON sy-vline 
WA_PKRVATINVCITEM_STR-TAXITEMGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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