ABAP Select data from SAP table PCNCUSTLINEITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCNCUSTLINEITEM
*  INTO TABLE @DATA(IT_PCNCUSTLINEITEM2).
*--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_PCNCUSTLINEITEM INDEX 1 INTO DATA(WA_PCNCUSTLINEITEM2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCNCUSTLINEITEM-FISCALPERIOD, sy-vline,
  WA_PCNCUSTLINEITEM-ALTERNATIVEGLACCOUNT, sy-vline,
  WA_PCNCUSTLINEITEM-CUSTBALALTVGLACCOUNTINFO, sy-vline,
  WA_PCNCUSTLINEITEM-GLACCOUNT, sy-vline,
  WA_PCNCUSTLINEITEM-SUPPLIER, sy-vline,
  WA_PCNCUSTLINEITEM-FINANCIALACCOUNTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCNCUSTLINEITEM 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_PCNCUSTLINEITEM 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_PCNCUSTLINEITEM INTO WA_PCNCUSTLINEITEM.


*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_PCNCUSTLINEITEM-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCNCUSTLINEITEM-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCNCUSTLINEITEM-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCNCUSTLINEITEM-BUSINESSPARTNER.
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_PCNCUSTLINEITEM_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
LEDGERGLLINEITEM TYPE STRING,
FISCALPERIOD TYPE STRING,
ALTERNATIVEGLACCOUNT TYPE STRING,
CUSTBALALTVGLACCOUNTINFO TYPE STRING,
GLACCOUNT TYPE STRING,
SUPPLIER TYPE STRING,
FINANCIALACCOUNTTYPE TYPE STRING,
CUSTOMER TYPE STRING,
SPECIALGLCODE TYPE STRING,
PROFITCENTER TYPE STRING,
BUSINESSAREA TYPE STRING,
ASSIGNMENTREFERENCE TYPE STRING,
POSTINGDATE TYPE STRING,
ISCLEARED TYPE STRING,
CLEARINGSTATUSCRITICALITY TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
DOCUMENTDATE TYPE STRING,
ACCOUNTINGDOCCREATEDBYUSER TYPE STRING,
DOCUMENTITEMTEXT TYPE STRING,
CLEARINGDATE TYPE STRING,
CLEARINGACCOUNTINGDOCUMENT TYPE STRING,
ALTERNATIVEREFERENCEDOCUMENT TYPE STRING,
ACCOUNTINGDOCUMENTHEADERTEXT TYPE STRING,
FISCALYEARPERIOD TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CUSTOMERACCOUNTGROUP TYPE STRING,
CUSTOMERVATREGISTRATION TYPE STRING,
CUSTOMERCOUNTRY TYPE STRING,
CUSTOMERCITYNAME TYPE STRING,
CUSTOMERREGION TYPE STRING,
CUSTOMERNAME TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
BUSINESSPARTNERNAME TYPE STRING,
CUSTBALBUSINESSPARTNERINFO TYPE STRING,
CUSTBALCUSTOMERINFO TYPE STRING,
CUSTBALSUPPLIERINFO TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
AMOUNTINTRANSACTIONCURRENCY TYPE STRING,
DEBITAMOUNTINTRANSCRCY TYPE STRING,
CREDITAMOUNTINTRANSCRCY TYPE STRING,
AMOUNTINDISPLAYCURRENCY TYPE STRING,
DEBITAMOUNTINDISPLAYCRCY TYPE STRING,
CREDITAMOUNTINDISPLAYCRCY TYPE STRING,
CUSTBALCARRYFWDAMTINDSPCRCY TYPE STRING,
CUSTBALSTARTINGBALAMTINDSPCRCY TYPE STRING,
CUSTBALENDINGBALAMTINDSPCRCY TYPE STRING,
CUSTBALDEBITAMTINDSPCRCY TYPE STRING,
CUSTBALCREDITAMTINDSPCRCY TYPE STRING,
CUSTBALYTDDEBITAMTINDSPCRCY TYPE STRING,
CUSTBALYTDCRDTAMTINDSPCRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCNCUSTLINEITEM_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_PCNCUSTLINEITEM_STR-MANDT sy-vline 
WA_PCNCUSTLINEITEM_STR-COMPANYCODE sy-vline 
WA_PCNCUSTLINEITEM_STR-FISCALYEAR sy-vline 
WA_PCNCUSTLINEITEM_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_PCNCUSTLINEITEM_STR-LEDGERGLLINEITEM sy-vline 
WA_PCNCUSTLINEITEM_STR-FISCALPERIOD sy-vline 
WA_PCNCUSTLINEITEM_STR-ALTERNATIVEGLACCOUNT sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALALTVGLACCOUNTINFO sy-vline 
WA_PCNCUSTLINEITEM_STR-GLACCOUNT sy-vline 
WA_PCNCUSTLINEITEM_STR-SUPPLIER sy-vline 
WA_PCNCUSTLINEITEM_STR-FINANCIALACCOUNTTYPE sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTOMER sy-vline 
WA_PCNCUSTLINEITEM_STR-SPECIALGLCODE sy-vline 
WA_PCNCUSTLINEITEM_STR-PROFITCENTER sy-vline 
WA_PCNCUSTLINEITEM_STR-BUSINESSAREA sy-vline 
WA_PCNCUSTLINEITEM_STR-ASSIGNMENTREFERENCE sy-vline 
WA_PCNCUSTLINEITEM_STR-POSTINGDATE sy-vline 
WA_PCNCUSTLINEITEM_STR-ISCLEARED sy-vline 
WA_PCNCUSTLINEITEM_STR-CLEARINGSTATUSCRITICALITY sy-vline 
WA_PCNCUSTLINEITEM_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_PCNCUSTLINEITEM_STR-DOCUMENTDATE sy-vline 
WA_PCNCUSTLINEITEM_STR-ACCOUNTINGDOCCREATEDBYUSER sy-vline 
WA_PCNCUSTLINEITEM_STR-DOCUMENTITEMTEXT sy-vline 
WA_PCNCUSTLINEITEM_STR-CLEARINGDATE sy-vline 
WA_PCNCUSTLINEITEM_STR-CLEARINGACCOUNTINGDOCUMENT sy-vline 
WA_PCNCUSTLINEITEM_STR-ALTERNATIVEREFERENCEDOCUMENT sy-vline 
WA_PCNCUSTLINEITEM_STR-ACCOUNTINGDOCUMENTHEADERTEXT sy-vline 
WA_PCNCUSTLINEITEM_STR-FISCALYEARPERIOD sy-vline 
WA_PCNCUSTLINEITEM_STR-BUSINESSPARTNER sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTOMERACCOUNTGROUP sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTOMERVATREGISTRATION sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTOMERCOUNTRY sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTOMERCITYNAME sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTOMERREGION sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTOMERNAME sy-vline 
WA_PCNCUSTLINEITEM_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_PCNCUSTLINEITEM_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_PCNCUSTLINEITEM_STR-BUSINESSPARTNERNAME sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALBUSINESSPARTNERINFO sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALCUSTOMERINFO sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALSUPPLIERINFO sy-vline 
WA_PCNCUSTLINEITEM_STR-DISPLAYCURRENCY sy-vline 
WA_PCNCUSTLINEITEM_STR-TRANSACTIONCURRENCY sy-vline 
WA_PCNCUSTLINEITEM_STR-AMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_PCNCUSTLINEITEM_STR-DEBITAMOUNTINTRANSCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-CREDITAMOUNTINTRANSCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-AMOUNTINDISPLAYCURRENCY sy-vline 
WA_PCNCUSTLINEITEM_STR-DEBITAMOUNTINDISPLAYCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-CREDITAMOUNTINDISPLAYCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALCARRYFWDAMTINDSPCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALSTARTINGBALAMTINDSPCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALENDINGBALAMTINDSPCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALDEBITAMTINDSPCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALCREDITAMTINDSPCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALYTDDEBITAMTINDSPCRCY sy-vline 
WA_PCNCUSTLINEITEM_STR-CUSTBALYTDCRDTAMTINDSPCRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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