ABAP Select data from SAP table PCNCADEAPITEMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCNCADEAPITEMS
*  INTO TABLE @DATA(IT_PCNCADEAPITEMS2).
*--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_PCNCADEAPITEMS INDEX 1 INTO DATA(WA_PCNCADEAPITEMS2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCNCADEAPITEMS-ACCOUNTINGDOCUMENTITEM, sy-vline,
  WA_PCNCADEAPITEMS-GLACCOUNT, sy-vline,
  WA_PCNCADEAPITEMS-CHARTOFACCOUNTS, sy-vline,
  WA_PCNCADEAPITEMS-CREDITOR, sy-vline,
  WA_PCNCADEAPITEMS-DOCUMENTDATE, sy-vline,
  WA_PCNCADEAPITEMS-POSTINGDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCNCADEAPITEMS 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_PCNCADEAPITEMS 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_PCNCADEAPITEMS INTO WA_PCNCADEAPITEMS.


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

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

*Conversion exit ALPHA, internal->external for field GLACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCNCADEAPITEMS-GLACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCNCADEAPITEMS-GLACCOUNT.
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_PCNCADEAPITEMS_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
GLACCOUNT TYPE STRING,
CHARTOFACCOUNTS TYPE STRING,
CREDITOR TYPE STRING,
DOCUMENTDATE TYPE STRING,
POSTINGDATE TYPE STRING,
FISCALPERIOD TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
CURRENCYSHORTNAME TYPE STRING,
EXCHANGERATE TYPE STRING,
AMOUNTINCOMPANYCODECURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
TRANSACTIONCURRENCYNAME TYPE STRING,
AMOUNTINTRANSACTIONCURRENCY TYPE STRING,
DOCUMENTITEMTEXT TYPE STRING,
VALUEDATE TYPE STRING,
CLEARINGACCOUNTINGDOCUMENT TYPE STRING,
CLEARINGDATE TYPE STRING,
BILLINGDOCUMENT TYPE STRING,
DOCUMENTREFERENCEID TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PAYMENTMETHOD TYPE STRING,
ISCLEARED TYPE STRING,
BILLOFEXCHANGE TYPE STRING,
ALTERNATIVEGLACCOUNT TYPE STRING,
ALTERNATIVEREFERENCEDOCUMENT TYPE STRING,
GLACCOUNTINFO TYPE STRING,
CACLEARINGDOCUMENTNUMBER TYPE STRING,
DEBITCREDITCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCNCADEAPITEMS_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_PCNCADEAPITEMS_STR-MANDT sy-vline 
WA_PCNCADEAPITEMS_STR-COMPANYCODE sy-vline 
WA_PCNCADEAPITEMS_STR-FISCALYEAR sy-vline 
WA_PCNCADEAPITEMS_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_PCNCADEAPITEMS_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_PCNCADEAPITEMS_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_PCNCADEAPITEMS_STR-GLACCOUNT sy-vline 
WA_PCNCADEAPITEMS_STR-CHARTOFACCOUNTS sy-vline 
WA_PCNCADEAPITEMS_STR-CREDITOR sy-vline 
WA_PCNCADEAPITEMS_STR-DOCUMENTDATE sy-vline 
WA_PCNCADEAPITEMS_STR-POSTINGDATE sy-vline 
WA_PCNCADEAPITEMS_STR-FISCALPERIOD sy-vline 
WA_PCNCADEAPITEMS_STR-COMPANYCODECURRENCY sy-vline 
WA_PCNCADEAPITEMS_STR-CURRENCYSHORTNAME sy-vline 
WA_PCNCADEAPITEMS_STR-EXCHANGERATE sy-vline 
WA_PCNCADEAPITEMS_STR-AMOUNTINCOMPANYCODECURRENCY sy-vline 
WA_PCNCADEAPITEMS_STR-TRANSACTIONCURRENCY sy-vline 
WA_PCNCADEAPITEMS_STR-TRANSACTIONCURRENCYNAME sy-vline 
WA_PCNCADEAPITEMS_STR-AMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_PCNCADEAPITEMS_STR-DOCUMENTITEMTEXT sy-vline 
WA_PCNCADEAPITEMS_STR-VALUEDATE sy-vline 
WA_PCNCADEAPITEMS_STR-CLEARINGACCOUNTINGDOCUMENT sy-vline 
WA_PCNCADEAPITEMS_STR-CLEARINGDATE sy-vline 
WA_PCNCADEAPITEMS_STR-BILLINGDOCUMENT sy-vline 
WA_PCNCADEAPITEMS_STR-DOCUMENTREFERENCEID sy-vline 
WA_PCNCADEAPITEMS_STR-PURCHASINGDOCUMENT sy-vline 
WA_PCNCADEAPITEMS_STR-PAYMENTMETHOD sy-vline 
WA_PCNCADEAPITEMS_STR-ISCLEARED sy-vline 
WA_PCNCADEAPITEMS_STR-BILLOFEXCHANGE sy-vline 
WA_PCNCADEAPITEMS_STR-ALTERNATIVEGLACCOUNT sy-vline 
WA_PCNCADEAPITEMS_STR-ALTERNATIVEREFERENCEDOCUMENT sy-vline 
WA_PCNCADEAPITEMS_STR-GLACCOUNTINFO sy-vline 
WA_PCNCADEAPITEMS_STR-CACLEARINGDOCUMENTNUMBER sy-vline 
WA_PCNCADEAPITEMS_STR-DEBITCREDITCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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