ABAP Select data from SAP table CDOCLINVITEM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDOCLINVITEM
*  INTO TABLE @DATA(IT_CDOCLINVITEM2).
*--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_CDOCLINVITEM INDEX 1 INTO DATA(WA_CDOCLINVITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CDOCLINVITEM>-MANDT = 1.
<CDOCLINVITEM>-INVOICEREFERENCE = 1.
<CDOCLINVITEM>-INVOICEREFERENCEFISCALYEAR = 1.
<CDOCLINVITEM>-ACCOUNTINGDOCUMENTITEM = 1.
<CDOCLINVITEM>-PURCHASEORDER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDOCLINVITEM-PURCHASEORDERITEM, sy-vline,
  WA_CDOCLINVITEM-MATERIAL, sy-vline,
  WA_CDOCLINVITEM-QUANTITY, sy-vline,
  WA_CDOCLINVITEM-QUANTITYUNIT, sy-vline,
  WA_CDOCLINVITEM-AMOUNTINTRANACTIONCURRENCY, sy-vline,
  WA_CDOCLINVITEM-ERP_CONTRACT_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CDOCLINVITEM 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_CDOCLINVITEM 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_CDOCLINVITEM INTO WA_CDOCLINVITEM.


*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 INVOICEREFERENCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CDOCLINVITEM-INVOICEREFERENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDOCLINVITEM-INVOICEREFERENCE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CDOCLINVITEM-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDOCLINVITEM-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CDOCLINVITEM-QUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDOCLINVITEM-QUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ERP_CONTRACT_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CDOCLINVITEM-ERP_CONTRACT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDOCLINVITEM-ERP_CONTRACT_ID.
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_CDOCLINVITEM_STR, 
MANDT TYPE STRING,
INVOICEREFERENCE TYPE STRING,
INVOICEREFERENCEFISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
MATERIAL TYPE STRING,
QUANTITY TYPE STRING,
QUANTITYUNIT TYPE STRING,
AMOUNTINTRANACTIONCURRENCY TYPE STRING,
ERP_CONTRACT_ID TYPE STRING,
ACCOUNTINGDOCUMENTITEM1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CDOCLINVITEM_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_CDOCLINVITEM_STR-MANDT sy-vline 
WA_CDOCLINVITEM_STR-INVOICEREFERENCE sy-vline 
WA_CDOCLINVITEM_STR-INVOICEREFERENCEFISCALYEAR sy-vline 
WA_CDOCLINVITEM_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_CDOCLINVITEM_STR-PURCHASEORDER sy-vline 
WA_CDOCLINVITEM_STR-PURCHASEORDERITEM sy-vline 
WA_CDOCLINVITEM_STR-MATERIAL sy-vline 
WA_CDOCLINVITEM_STR-QUANTITY sy-vline 
WA_CDOCLINVITEM_STR-QUANTITYUNIT sy-vline 
WA_CDOCLINVITEM_STR-AMOUNTINTRANACTIONCURRENCY sy-vline 
WA_CDOCLINVITEM_STR-ERP_CONTRACT_ID sy-vline 
WA_CDOCLINVITEM_STR-ACCOUNTINGDOCUMENTITEM1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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